CA1067476A - Embedded housing for ore crusher - Google Patents
Embedded housing for ore crusherInfo
- Publication number
- CA1067476A CA1067476A CA251,700A CA251700A CA1067476A CA 1067476 A CA1067476 A CA 1067476A CA 251700 A CA251700 A CA 251700A CA 1067476 A CA1067476 A CA 1067476A
- Authority
- CA
- Canada
- Prior art keywords
- segment
- ore
- housing
- segments
- crusher
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
Abstract
EMBEDDED HOUSING FOR ORE CRUSHER
Abstract of the Disclosure An improved housing embedded in the ground for use in crushing of ore. The housing has a generally figure eight configuration in plan defined by a pair of hollow, upright cylindrical segments with a common wall between the points of intersection of the segments. One segment houses a dump pocket, an ore crusher, a surge chamber and a discharge feeder and conveyor in descending order, and the other segment contains drive machinery, dust control apparatus, a lubrication system, hoist ways, elevator shaft, and other service facilities. The crusher in the first segment is supported on a floor supported by the wall of the first segment itself. The housing requires only a minimum of concrete and reinforcing steel since the cylin-drical configuration of the sections thereof provide the most efficient resistance to lateral pressures resulting from earth backfill and surcharge from heavy haul trucks.
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Abstract of the Disclosure An improved housing embedded in the ground for use in crushing of ore. The housing has a generally figure eight configuration in plan defined by a pair of hollow, upright cylindrical segments with a common wall between the points of intersection of the segments. One segment houses a dump pocket, an ore crusher, a surge chamber and a discharge feeder and conveyor in descending order, and the other segment contains drive machinery, dust control apparatus, a lubrication system, hoist ways, elevator shaft, and other service facilities. The crusher in the first segment is supported on a floor supported by the wall of the first segment itself. The housing requires only a minimum of concrete and reinforcing steel since the cylin-drical configuration of the sections thereof provide the most efficient resistance to lateral pressures resulting from earth backfill and surcharge from heavy haul trucks.
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Description
~O~i747~
1 This invention relates to improvements in the
1 This invention relates to improvements in the
2 embedded housing of ore crushers and associated equipment
3 and, more particularly, to an embedded crusher housing
4 which requires only a minimum of concrete and reinforcing steel and which utilizes the interior space thereof more 6 efficiently than is capable with conventional housing 7 structures.
8 It is well-known to pro~ide an ore~crusher in g a rectangular, box-shaped embedded housing of reinforced concrete. This permits heavy haul ore trucks to dump 11 their contents into a hole in the ground to eliminate the 12 need for elevating the uncrlshed ore to a height which 13 would require considerable work to do so. The rectangular 14 configuration of such a housing requires that a considerable amount of concrete and reinforcing steel be used to render 16 the housing structurally sound but yet large enough to 17 house not only the crusher itself but also other equipment 18 and chambers, such as an elevator, a surge pocket, a con-19 veyor, drive machinery and~the like. Moreover, in the construction of a rectangular housing of conventional design, 21 considerable expense is always encountered in the place-22 ment of the large amount of reinforcing steel that is re-23 quired. Alsor a problem exists in properly pouring con-24 crete around the closely spaced reinforcing steel to form the rectangular wall of the housing.
26 An attempt to reduce the amount of concrete and 27 reinforcing steel in housing of this type has resulted in 28 the development of a housing having a single circular shape, 29 such as a standard silo shape. This shape, when considered from a structural point of view, offers great promise ~067476 1 because the exterior wall of concrete is stressed in its 2 most efficient manner, i.e., as a closed ring in compres-3 sion. Such a structure has an ability to resist the very high lateral pressures resulting from earth backfill as well as the surcharge from heavy haul trucks. The 6 single circle configuration offers a significant savings 7 in materials when compared with the heavy slab-beam-strut 8 concept used in the conventional rectangular crusher housing g and the massive use of concrete and reinforcing steel of such rectangular housing. These savings result from a 11 reduction of average exterior wall thickness of three to 12 four feet as required by the rectangular structure to a 13 minimum of eighteen to twenty-four inches for the single 14 circular configuration. In addition, significant savings in reinforcing steel are achieved due to the concept of 16 carrying principal loads by concrete in compression instead 17 of bending in heavy slabs.
18 While the single circular shape of pressure 19 housing has certain advantages, it does not provide for the optimum use of the space therein. This drawback requires 21 that the single circular housing be relatively large in 22 size, thereby requiring large amounts of concrete 23 and reinforcing steel although such amounts are less than 24 those required in the conventional rectangular housings.
Because of the foregoing, a need has arisen for 26 an improved underground crusher housing which utilizes 27 the structural features of the single circular confi~uration 28 of housing yet further minimizes the concrete and rein-29 forcing steel required to provide a structurally sound ~067476 l housing yet provide or adequate space to contain all of 2 tha necessary equipment to carry out ore crushing opera-3 tion.
The present invention is directed to an improved housing for the underground mounting o~ an ore crusher 6 and its associated equipment. To this end, the housing 7 has a generally figure-eight configuration in plan, defined 8 by a pair of intersecting, hollow, upright, generally 9 cylindrical segments with a common wall between the points 1~ of intersection of the segments. The intersecting cylinders ll will be usually but not necessarily circular cylinders.
12 Structural requirements make circular cylinders preferable 13 but the arrangement of machinery within the housing and size 14 limitations may make anelliptical cylinder preferable for one or both segments. One of the segments is adapt~d to 16 contain the dump pocket, the ore crusher, the surge pocket,~
17 and a lateral discharge eeder; whereas, the other segment 18 is adapted to contain equipment such as an elevator and l9 elevator shaft, an inclined conveyor leading off through an inclined tube communicating with the lower~end of the other 21 section, dust control apparatus, lubrication system, and 22 other service facilities. The intersecting cylindr1cal 23 configurations of the segments with the common wall allow 24 the housing, which is formed of reinforced concrete, to provide the most efficient resistance to the high lateral 26 pressures resulting from ear~h backEill and the surcharge 27 from heavy haul ore trucks, while allowing Eor the 28 optimum of the space in the housing, thereby keeping the :
1 size of the housing relatively small to minimize the 2 volume of concrete and the amount of reinforcing steel 3 which must be used to form the housing.
4 Another aspect of the housing of this invention is the way in which the ore crusher and other equipment 6 and feed ore and crushed ore are supported in the seg-7 ments. The segment o~ the housing containing the crusher 8 is provided with a floor or corbel extending inwardly 9 from the inner surface of the segment and supported 10 directly from the segment wall and the common wall and the 11 ore crusher is supported on the floor or corbel and 12 extends through a central opening therein. This feature 13 eliminates the need for columns, beams and the like which 14 have heretofore been used to support the crusher in con-15 ventional rectangular and single circular ore crushing 16 housings. Other floors and corbels similarly supported 17 directly from the housing walls provide support for the 18 other equipment, the feed ore and the crushed ore without 19 the use of columns, beams and the like.
The present invention, therefore, meets needs 21 caused by deficiencies of prior art ore crusher housing 22 and assures that a stable, structurally sound construction 23 can be achieved with a minimum of concrete and reinforcing 24 steel while providing optimum usage of the space within 25 the two sections of the housing. Significant savings in 26 material costs can, therefore, be realized, yet all of 27 the operating advanta~es of prior art housings can be 28 provided in the housing of the present invention.
~067476 l The invention is illustrated, by way of example, 2 in the drawings in which:
3 Fig. l is a vertical section through the under-4 grqund housing for an ore crusher forming the subject of the present invention;
6 Fig. 2 is a top plan view of the housing looking 7 down from the line 2-2 in Fig.~ l; and 8 Figs. 3, 4 and 5 are horizontal sections taken 9 through lines 3-3, 4-4 and 5-5, respectively, of Fig. 1.
16 ;
~Oi~476 The u~derground housing of the present invention is broadly denoted by the numeral 10 and has a figure eight configuration in plan form as shown in Figures 2-5. The ~ housing is made up of two~cylindrical se~ments 12 and 14 which are interconnected by a~common wall 16. The figures~
show circular c~ylinders but other cylindrica:L shapes might be preferable in certain-circumstances, such as elliptical cross sections. Segments-I2 and 14 are not completely cylindrical in that wall 16, which lies in a ~enerally vertical plane, forms a closure across the~open end segment.
Segment 12 has a diameter less than segment 14 and, as shown in Figure 1, segment 12 is s;lightly~higher iII elevation than segment 14, the latter having its upper extremities sub-stantially flush with ground level 18.
~15 The area~above floor 22 and the top of the crusher receives ore from trucks. When trucks of about 150 tons or larger capacity are~used, this~area may take a square or rectangular~ configuration to prevent trucks from dumping directly on the crusher upper bearing support.
An ore crusher 20 of conventional construction is located in segment 12 *ear the upper end thereof. Crusher 20 is supported laterally by a floor or-corbel 22 and extends through an opening 24 ln the ~loor. The crusher i5 also supported on a second floor or corbel 26 spaced below floor 22. Floors or corbels 22 and 26 are integral with segment 12 and wall 16 and project inwardly therefrom. This construction avoids the need for vertical columns for supporting the crusher as is required in many prior art crusher housings. Crusher 20 also has an ore discharge passage 28 which is a central opening in floor 26.
~06747~i Segment 12 has a third floor corbel 32 spaced below floor 26 so that a surge pocket 34 is defined between discharge passage 28 of crusher 20 and floor 32, there being a central opening 36 in floor 32 to allow crushed ore from s surge pocket 34 to gravitate onto a generally horizontal fee~er 38 below rloor 32 and to pass through an opening 40 in wall 16 for discharge onto an inclined conveyor 42 a~ the bottom of segment 14 ~Figure 1). A fourth floor 44 is located below conveyor 38 and supports it.
Segment 14 has a first floor 50 across the interior thereof at a location near but slightly below floor 26 of segment 12. Floor 50 has a covered hatch 52 spaced inwardly from the inner surface of segment 14 for entering and removing mechanical and electricaI parts.
A second floor 54 is provided in segment 14 below floor 50. This also has a covered hatch 56 generally aligned with hatch 52i thereabove.
Segment 14~is also provided with an elevator shaft 58 which extends the length of the segment and into a silo or housing 60 supported on the roof or uppermost floor 62 of segment 14. Silo 60 has a doorway 64 for entrance to the elevator ~not shown) in shaft 58. On each of floors 50 and 54, there is a doorway permltting access to the elevator in the shaft from-each of suc~,floors. Also, there is a door-way at the bottom of the shaft permitting access to thevicinity of conveyor 42.
~ drive motor 66 is supported on floor 50 and has a drive shaft 68 passing through opening 70 in wall 16 so that the motor can be coupled with crusher 20 to operate the same for crushing ore.
~067~7~;
Floor 54 is provided with a pair of spaced rails 72 (Figure 4) over which a utility vehicle 74 can be driven.
Also, portable tracks.76 can be moved into a position across the upper portion of surge pocket 34 so that vehicle 74 can be driven into the surg~ pocket to allow workmen to do maintenance work~on crusher 20 from beneath the latter. An opening 78 is provided.in wall.l6 to allow vehicle 74 to move through the wall. .
The upper level of the crushed ore in surge pocket 34 can be detected by a unit comprised of a radiation source 80 and a radiation detector 82 generally horizontally aligned with each other. Radiation source 80 is adjustably mounted in a pipe 84 embedded.in floor 26 and in the wall s-tructure of section 12 as shown in Figure 1. Pipe 84 extends between~floors 26 and 32 and any suitable means can be utilized, such as a flexible line or the like, ~o adjus-tably position radiation source 80 in pipe 84. Radiation detector 82 can be manually positioned in opening 78 so that the radiation detector is in alignment with radiation source 80.
In addition to supporting silo 60, roof 62 also supports a housing 85 which forms a control room for opera-ting crusher 20 and conveyors 38 and 42. Roof 62 has a pair of covered hatches 86 and 88l hatch 86 being vertically aligned with hatches 52.and.56... A housing 90 to one side of segment 14 defines an electrical room housing control panels and other electrical equipment.
In use, a truck or other vehicle containing ore to be crushed moves over surface 18 and dumps the ore into the open top 92 of segment 12. The ore falls through segment 12 and into crusher 20 where it is crushed when motor 66 is operating. The crushed ore falls into surge pocket 34 and then passes through opening 36..in the floor 32 for deposit onto feeder 38. The ore on feeder 38 is the moved at a controlled rate of the.left.when viewi.ng Figure 1 and gravitates eventually onto inclined conveyor 4:2 and up the conveyor a relat;ively long distance to ground level 18.
Typically, conveyor 42 will extend above ground level 18 to a processing station spaced thereabove.
Typical dimensions~of the various components of housing lO are as follows:. the wal~ thickness of segments 12 and 14 is 24".or less; the diameter of segment 12 is 28';
the diameter of segment 14..is 36'; the distance from ground level 18 to the upper surface of base 48 is 87'. Motor 66 is a 500 hp motor. Crusher 20 i5 a 60" ~:~89" crusher. The distance between the center line of segment 12 and the center line of segmen~t 14 is 30'. The thickness of fIoor 22 is 42". The minimum thickness of floor 26 is 60". The thickness of floor 32 is.30" and the thickness of base 48 is 48". The thickness of each.of floors 50 and 54 is 18".
Conveyor 38 is 7' wide and 30' long. Conveyor 42 is 5' wide.
The construction of housing 10 permits the use of a minimum volume of concrete and a minimum amount of rein-forcing steel because ~he~cylindrical cross sections in segments 12 and 14 perm1t housing 10 to be stressed in its most efficient manner, i.e., as closed ring segments in compression or as closed ellip*.ical cylindrical se~ments in compression with moderate bending. This assures tha~
_g_ ~0~i7476 housing lO, even when it has a height of 80' to 100', has the ability to resist the very high lateral pressures exerted thereon from earth backfill as well as the surcharge from heavy haul trucks. Also, the configuration of housing lO permits a more effiaient utilization ~f space since it allows the crusher, surge pocketj and discharge conveyor to be in one segment while drive machinery,~dust control, lubrication systems, hoistw~ays and elevator can be in another sesment. The same principle of utilizing in a circular concrete building the basis strength of concrete in compression is retained by the figure eight con~iguration of housing lO.
Prior art crusher housings of rectangular and single circular plan forms can be comp æ ed in cost with the cost of houslng l0 by comparing~the~amount of concrete and reinforcing steel used in each. The comparison figures are as follows:
Planform Concrete Reinforcing Reinforced Co~figurationCubic Yards Steel, Tons Steel, Avg.
Unit Wt. Lbs./
Cubic Yards Rectangular 3396 345.5 203 Single Circle 2285 194 170 Figure Eight 1691 137 162 These quantities are for housings in which the same gyratory crusher (60"- X 89") is inst~alled. The specific requirements of individual users might result in a change in the total a~ounts of concrete and reinforcing steel required for the rectangular, the circular or figure eight structure. The quantities shown above include reasonable allowances for ~067476 changes resulting from minor variations in layout.
Based on unit costs as of October 1974 for concrete and reinforcing steel of approximately $130 p.er cubic yard and approximately $650 per ton.in place, respectively, the
8 It is well-known to pro~ide an ore~crusher in g a rectangular, box-shaped embedded housing of reinforced concrete. This permits heavy haul ore trucks to dump 11 their contents into a hole in the ground to eliminate the 12 need for elevating the uncrlshed ore to a height which 13 would require considerable work to do so. The rectangular 14 configuration of such a housing requires that a considerable amount of concrete and reinforcing steel be used to render 16 the housing structurally sound but yet large enough to 17 house not only the crusher itself but also other equipment 18 and chambers, such as an elevator, a surge pocket, a con-19 veyor, drive machinery and~the like. Moreover, in the construction of a rectangular housing of conventional design, 21 considerable expense is always encountered in the place-22 ment of the large amount of reinforcing steel that is re-23 quired. Alsor a problem exists in properly pouring con-24 crete around the closely spaced reinforcing steel to form the rectangular wall of the housing.
26 An attempt to reduce the amount of concrete and 27 reinforcing steel in housing of this type has resulted in 28 the development of a housing having a single circular shape, 29 such as a standard silo shape. This shape, when considered from a structural point of view, offers great promise ~067476 1 because the exterior wall of concrete is stressed in its 2 most efficient manner, i.e., as a closed ring in compres-3 sion. Such a structure has an ability to resist the very high lateral pressures resulting from earth backfill as well as the surcharge from heavy haul trucks. The 6 single circle configuration offers a significant savings 7 in materials when compared with the heavy slab-beam-strut 8 concept used in the conventional rectangular crusher housing g and the massive use of concrete and reinforcing steel of such rectangular housing. These savings result from a 11 reduction of average exterior wall thickness of three to 12 four feet as required by the rectangular structure to a 13 minimum of eighteen to twenty-four inches for the single 14 circular configuration. In addition, significant savings in reinforcing steel are achieved due to the concept of 16 carrying principal loads by concrete in compression instead 17 of bending in heavy slabs.
18 While the single circular shape of pressure 19 housing has certain advantages, it does not provide for the optimum use of the space therein. This drawback requires 21 that the single circular housing be relatively large in 22 size, thereby requiring large amounts of concrete 23 and reinforcing steel although such amounts are less than 24 those required in the conventional rectangular housings.
Because of the foregoing, a need has arisen for 26 an improved underground crusher housing which utilizes 27 the structural features of the single circular confi~uration 28 of housing yet further minimizes the concrete and rein-29 forcing steel required to provide a structurally sound ~067476 l housing yet provide or adequate space to contain all of 2 tha necessary equipment to carry out ore crushing opera-3 tion.
The present invention is directed to an improved housing for the underground mounting o~ an ore crusher 6 and its associated equipment. To this end, the housing 7 has a generally figure-eight configuration in plan, defined 8 by a pair of intersecting, hollow, upright, generally 9 cylindrical segments with a common wall between the points 1~ of intersection of the segments. The intersecting cylinders ll will be usually but not necessarily circular cylinders.
12 Structural requirements make circular cylinders preferable 13 but the arrangement of machinery within the housing and size 14 limitations may make anelliptical cylinder preferable for one or both segments. One of the segments is adapt~d to 16 contain the dump pocket, the ore crusher, the surge pocket,~
17 and a lateral discharge eeder; whereas, the other segment 18 is adapted to contain equipment such as an elevator and l9 elevator shaft, an inclined conveyor leading off through an inclined tube communicating with the lower~end of the other 21 section, dust control apparatus, lubrication system, and 22 other service facilities. The intersecting cylindr1cal 23 configurations of the segments with the common wall allow 24 the housing, which is formed of reinforced concrete, to provide the most efficient resistance to the high lateral 26 pressures resulting from ear~h backEill and the surcharge 27 from heavy haul ore trucks, while allowing Eor the 28 optimum of the space in the housing, thereby keeping the :
1 size of the housing relatively small to minimize the 2 volume of concrete and the amount of reinforcing steel 3 which must be used to form the housing.
4 Another aspect of the housing of this invention is the way in which the ore crusher and other equipment 6 and feed ore and crushed ore are supported in the seg-7 ments. The segment o~ the housing containing the crusher 8 is provided with a floor or corbel extending inwardly 9 from the inner surface of the segment and supported 10 directly from the segment wall and the common wall and the 11 ore crusher is supported on the floor or corbel and 12 extends through a central opening therein. This feature 13 eliminates the need for columns, beams and the like which 14 have heretofore been used to support the crusher in con-15 ventional rectangular and single circular ore crushing 16 housings. Other floors and corbels similarly supported 17 directly from the housing walls provide support for the 18 other equipment, the feed ore and the crushed ore without 19 the use of columns, beams and the like.
The present invention, therefore, meets needs 21 caused by deficiencies of prior art ore crusher housing 22 and assures that a stable, structurally sound construction 23 can be achieved with a minimum of concrete and reinforcing 24 steel while providing optimum usage of the space within 25 the two sections of the housing. Significant savings in 26 material costs can, therefore, be realized, yet all of 27 the operating advanta~es of prior art housings can be 28 provided in the housing of the present invention.
~067476 l The invention is illustrated, by way of example, 2 in the drawings in which:
3 Fig. l is a vertical section through the under-4 grqund housing for an ore crusher forming the subject of the present invention;
6 Fig. 2 is a top plan view of the housing looking 7 down from the line 2-2 in Fig.~ l; and 8 Figs. 3, 4 and 5 are horizontal sections taken 9 through lines 3-3, 4-4 and 5-5, respectively, of Fig. 1.
16 ;
~Oi~476 The u~derground housing of the present invention is broadly denoted by the numeral 10 and has a figure eight configuration in plan form as shown in Figures 2-5. The ~ housing is made up of two~cylindrical se~ments 12 and 14 which are interconnected by a~common wall 16. The figures~
show circular c~ylinders but other cylindrica:L shapes might be preferable in certain-circumstances, such as elliptical cross sections. Segments-I2 and 14 are not completely cylindrical in that wall 16, which lies in a ~enerally vertical plane, forms a closure across the~open end segment.
Segment 12 has a diameter less than segment 14 and, as shown in Figure 1, segment 12 is s;lightly~higher iII elevation than segment 14, the latter having its upper extremities sub-stantially flush with ground level 18.
~15 The area~above floor 22 and the top of the crusher receives ore from trucks. When trucks of about 150 tons or larger capacity are~used, this~area may take a square or rectangular~ configuration to prevent trucks from dumping directly on the crusher upper bearing support.
An ore crusher 20 of conventional construction is located in segment 12 *ear the upper end thereof. Crusher 20 is supported laterally by a floor or-corbel 22 and extends through an opening 24 ln the ~loor. The crusher i5 also supported on a second floor or corbel 26 spaced below floor 22. Floors or corbels 22 and 26 are integral with segment 12 and wall 16 and project inwardly therefrom. This construction avoids the need for vertical columns for supporting the crusher as is required in many prior art crusher housings. Crusher 20 also has an ore discharge passage 28 which is a central opening in floor 26.
~06747~i Segment 12 has a third floor corbel 32 spaced below floor 26 so that a surge pocket 34 is defined between discharge passage 28 of crusher 20 and floor 32, there being a central opening 36 in floor 32 to allow crushed ore from s surge pocket 34 to gravitate onto a generally horizontal fee~er 38 below rloor 32 and to pass through an opening 40 in wall 16 for discharge onto an inclined conveyor 42 a~ the bottom of segment 14 ~Figure 1). A fourth floor 44 is located below conveyor 38 and supports it.
Segment 14 has a first floor 50 across the interior thereof at a location near but slightly below floor 26 of segment 12. Floor 50 has a covered hatch 52 spaced inwardly from the inner surface of segment 14 for entering and removing mechanical and electricaI parts.
A second floor 54 is provided in segment 14 below floor 50. This also has a covered hatch 56 generally aligned with hatch 52i thereabove.
Segment 14~is also provided with an elevator shaft 58 which extends the length of the segment and into a silo or housing 60 supported on the roof or uppermost floor 62 of segment 14. Silo 60 has a doorway 64 for entrance to the elevator ~not shown) in shaft 58. On each of floors 50 and 54, there is a doorway permltting access to the elevator in the shaft from-each of suc~,floors. Also, there is a door-way at the bottom of the shaft permitting access to thevicinity of conveyor 42.
~ drive motor 66 is supported on floor 50 and has a drive shaft 68 passing through opening 70 in wall 16 so that the motor can be coupled with crusher 20 to operate the same for crushing ore.
~067~7~;
Floor 54 is provided with a pair of spaced rails 72 (Figure 4) over which a utility vehicle 74 can be driven.
Also, portable tracks.76 can be moved into a position across the upper portion of surge pocket 34 so that vehicle 74 can be driven into the surg~ pocket to allow workmen to do maintenance work~on crusher 20 from beneath the latter. An opening 78 is provided.in wall.l6 to allow vehicle 74 to move through the wall. .
The upper level of the crushed ore in surge pocket 34 can be detected by a unit comprised of a radiation source 80 and a radiation detector 82 generally horizontally aligned with each other. Radiation source 80 is adjustably mounted in a pipe 84 embedded.in floor 26 and in the wall s-tructure of section 12 as shown in Figure 1. Pipe 84 extends between~floors 26 and 32 and any suitable means can be utilized, such as a flexible line or the like, ~o adjus-tably position radiation source 80 in pipe 84. Radiation detector 82 can be manually positioned in opening 78 so that the radiation detector is in alignment with radiation source 80.
In addition to supporting silo 60, roof 62 also supports a housing 85 which forms a control room for opera-ting crusher 20 and conveyors 38 and 42. Roof 62 has a pair of covered hatches 86 and 88l hatch 86 being vertically aligned with hatches 52.and.56... A housing 90 to one side of segment 14 defines an electrical room housing control panels and other electrical equipment.
In use, a truck or other vehicle containing ore to be crushed moves over surface 18 and dumps the ore into the open top 92 of segment 12. The ore falls through segment 12 and into crusher 20 where it is crushed when motor 66 is operating. The crushed ore falls into surge pocket 34 and then passes through opening 36..in the floor 32 for deposit onto feeder 38. The ore on feeder 38 is the moved at a controlled rate of the.left.when viewi.ng Figure 1 and gravitates eventually onto inclined conveyor 4:2 and up the conveyor a relat;ively long distance to ground level 18.
Typically, conveyor 42 will extend above ground level 18 to a processing station spaced thereabove.
Typical dimensions~of the various components of housing lO are as follows:. the wal~ thickness of segments 12 and 14 is 24".or less; the diameter of segment 12 is 28';
the diameter of segment 14..is 36'; the distance from ground level 18 to the upper surface of base 48 is 87'. Motor 66 is a 500 hp motor. Crusher 20 i5 a 60" ~:~89" crusher. The distance between the center line of segment 12 and the center line of segmen~t 14 is 30'. The thickness of fIoor 22 is 42". The minimum thickness of floor 26 is 60". The thickness of floor 32 is.30" and the thickness of base 48 is 48". The thickness of each.of floors 50 and 54 is 18".
Conveyor 38 is 7' wide and 30' long. Conveyor 42 is 5' wide.
The construction of housing 10 permits the use of a minimum volume of concrete and a minimum amount of rein-forcing steel because ~he~cylindrical cross sections in segments 12 and 14 perm1t housing 10 to be stressed in its most efficient manner, i.e., as closed ring segments in compression or as closed ellip*.ical cylindrical se~ments in compression with moderate bending. This assures tha~
_g_ ~0~i7476 housing lO, even when it has a height of 80' to 100', has the ability to resist the very high lateral pressures exerted thereon from earth backfill as well as the surcharge from heavy haul trucks. Also, the configuration of housing lO permits a more effiaient utilization ~f space since it allows the crusher, surge pocketj and discharge conveyor to be in one segment while drive machinery,~dust control, lubrication systems, hoistw~ays and elevator can be in another sesment. The same principle of utilizing in a circular concrete building the basis strength of concrete in compression is retained by the figure eight con~iguration of housing lO.
Prior art crusher housings of rectangular and single circular plan forms can be comp æ ed in cost with the cost of houslng l0 by comparing~the~amount of concrete and reinforcing steel used in each. The comparison figures are as follows:
Planform Concrete Reinforcing Reinforced Co~figurationCubic Yards Steel, Tons Steel, Avg.
Unit Wt. Lbs./
Cubic Yards Rectangular 3396 345.5 203 Single Circle 2285 194 170 Figure Eight 1691 137 162 These quantities are for housings in which the same gyratory crusher (60"- X 89") is inst~alled. The specific requirements of individual users might result in a change in the total a~ounts of concrete and reinforcing steel required for the rectangular, the circular or figure eight structure. The quantities shown above include reasonable allowances for ~067476 changes resulting from minor variations in layout.
Based on unit costs as of October 1974 for concrete and reinforcing steel of approximately $130 p.er cubic yard and approximately $650 per ton.in place, respectively, the
5 quantities shown above can.be extended on a cost~basis as follows:
Planform Configuration Concrete . Reinforcin~ Steel Total Rectangular $441,480 $224,575 $666,055 Single Circle $297,500 $126,100 ~423,600 Figure~Eight $219,830. $ 89,050 $308,880 Considering the method of excavation.employed for these underground structure~s~which typically involves the use of heavy earth moving equipment and~blasting techniques to create a generous and open site for concrete work, the cost of excavation:is considered the same for a~11 three : types of structures-and,.therefore, is excluded from the above comparison.
While several different construction techniques are available.and can be used to form housing 10 of the present in.vention, a preferred technique~is-:the one using slip forms. This technique has the desirable feature of : achieving the cOnS.trUGtiOn of the basic, external structure of housing 10 ln a min~mun of time. The technique is also advantageous at construction sites located-in colder climates where it is desirable to create a .complete exterior enclosure as soon as possible and then.to complete the :interior features under cover at a time~when climatic conditions would severely hamper:outside work. Combined with the low ~)6747~;
unit cost of slip-forming the use of permanent metal form-support systems is desirable fo~ constructing the interior floor levels which provides for an expeditious floor pouring schedule to minimize overall costs.
With respect to the question of whether or not the slip form technique is suitable for achieving a solid and substantial finished structure~, such as required to support a large piece of moving equipment like a gyratory crusher, it is to be pointed out that features have been developed in housing lO to sati-sfy the requirement for such a solid and substantial finished structure. For instance, the thickness of the walls of sections 12 and 14 is preferably about 24".
This serves a three-fold purpose of providing ample tolerance for the slip-form technique, additional mass for supporting the machinery and adequ~te thickness to provide for sub-stantial keyways used to support horizontal elements. In combination with such keyways, grouting techniques can be used to insure that a positive bond between walls and floors is achieved.
In regions having a high water table, the problem of buoyancy of housing 10 might be of concern. The reason for this is that the reduced wall thickness of the figure eight configuration of housing 10 serves to reduce the total dead weight of the structur~e when compared with the dead weight of structures of rectangular configuration. Resistance to buoyancy can be achieved by extending base 48 laterally beyond the outer surfaces of sections 12 and 14 as shown in Figure 1 so that the backfill above the extension 98 will provide suitahle anchorage of housing 10 within the ground.
It appears that a potential saving in civil ~067476 .
engineeEing design man-hours is possible using the figure eight concept due to the simplified structural features thereof. This fact is.evident because the elaborate analyses and detailing required for designing slab and beam retaining walls is simplified with the fiyure ei~ht configuration.
Electrical, instrumentation.and mechani.cal efort would not require an increase in man-hours over.that required with the use of the rectangular configuration.
Planform Configuration Concrete . Reinforcin~ Steel Total Rectangular $441,480 $224,575 $666,055 Single Circle $297,500 $126,100 ~423,600 Figure~Eight $219,830. $ 89,050 $308,880 Considering the method of excavation.employed for these underground structure~s~which typically involves the use of heavy earth moving equipment and~blasting techniques to create a generous and open site for concrete work, the cost of excavation:is considered the same for a~11 three : types of structures-and,.therefore, is excluded from the above comparison.
While several different construction techniques are available.and can be used to form housing 10 of the present in.vention, a preferred technique~is-:the one using slip forms. This technique has the desirable feature of : achieving the cOnS.trUGtiOn of the basic, external structure of housing 10 ln a min~mun of time. The technique is also advantageous at construction sites located-in colder climates where it is desirable to create a .complete exterior enclosure as soon as possible and then.to complete the :interior features under cover at a time~when climatic conditions would severely hamper:outside work. Combined with the low ~)6747~;
unit cost of slip-forming the use of permanent metal form-support systems is desirable fo~ constructing the interior floor levels which provides for an expeditious floor pouring schedule to minimize overall costs.
With respect to the question of whether or not the slip form technique is suitable for achieving a solid and substantial finished structure~, such as required to support a large piece of moving equipment like a gyratory crusher, it is to be pointed out that features have been developed in housing lO to sati-sfy the requirement for such a solid and substantial finished structure. For instance, the thickness of the walls of sections 12 and 14 is preferably about 24".
This serves a three-fold purpose of providing ample tolerance for the slip-form technique, additional mass for supporting the machinery and adequ~te thickness to provide for sub-stantial keyways used to support horizontal elements. In combination with such keyways, grouting techniques can be used to insure that a positive bond between walls and floors is achieved.
In regions having a high water table, the problem of buoyancy of housing 10 might be of concern. The reason for this is that the reduced wall thickness of the figure eight configuration of housing 10 serves to reduce the total dead weight of the structur~e when compared with the dead weight of structures of rectangular configuration. Resistance to buoyancy can be achieved by extending base 48 laterally beyond the outer surfaces of sections 12 and 14 as shown in Figure 1 so that the backfill above the extension 98 will provide suitahle anchorage of housing 10 within the ground.
It appears that a potential saving in civil ~067476 .
engineeEing design man-hours is possible using the figure eight concept due to the simplified structural features thereof. This fact is.evident because the elaborate analyses and detailing required for designing slab and beam retaining walls is simplified with the fiyure ei~ht configuration.
Electrical, instrumentation.and mechani.cal efort would not require an increase in man-hours over.that required with the use of the rectangular configuration.
Claims (14)
1. Structure for containing an ore crusher and associated ore handling equipment below ground level com-prising: a hollow, concrete housing having a pair of up-right tubular segments and a common wall between the seg-ments, the segments and the wall defining a figure eight configuration, the housing adapted to be disposed below ground level and having means in one of the segments for supporting an ore crusher, there being a space in each segment near the lower end thereof for positioning ore conveying means therein.
2. Structure as set forth in Claim 1, wherein each segment is transversely circular throughout a major portion thereof.
3. Structure as set forth in Claim 1, wherein at least one of the segments is transversely elliptical throughout a major portion thereof.
4. Structure as set forth in Claim 1, wherein said supporting means comprises a corbel or floor integral with said one segment and extending inwardly therefrom, said corbel or floor adapted to be coupled in supporting relationship to the ore crusher.
5. Structure as set forth in Claim 1, wherein said supporting means comprises a corbel or floor having an opening therethrough, the floor being integral with said one segment, the ore crusher discharging through one opening in the corbel or floor.
6. Structure as set forth in Claim 1, wherein the diameters of the cylindrical portion of said first segment may be different from the diameter of the cylin-drical portion of the second segment.
7. Structure as set forth in Claim 1, wherein the housing has a wall interconnecting and common to said segments, said wall being in a generally vertical plane.
8. Structure as set forth in Claim 7, wherein said wall has a pair of opposed, generally flat faces and a pair of side margins, the sections being integral with said wall at said side margins.
9. Structure for mounting an ore crusher and associated ore handling equipment comprising: a housing of reinforced concrete adapted to be disposed below ground level and having a pair of interconnected, generally transversely circular tubular segments defining in plan form a figure eight configuration therefor, one of the segments having first means for supporting an ore crusher, a space for receiving feed ore, a space for receiving crushed ore from the crusher, and second means for mounting a feeder aligned with said space, the other segment having third means for supporting the crusher drive motor, fourth means for mounting an elevator therein and fifth means for mounting an inclined ore conveyor aligned with one end of the feeder.
10. Structure as set forth in Claim 9, wherein said first and third means include corbels integral with said segments and supported directly thereby.
11. Structure as set forth in Claim 9, wherein said fifth means includes an inclined tube integral with the other segment at the lower end thereof, the tube being in communication with the other segment to permit the ore conveyor to extend from said other segment into and through said tube.
12. Ore handling apparatus comprising: a housing of reinforced concrete and having a pair of generally hollow cylindrical segments and a wall interconnecting the inter-secting ends of said segments, said segments and said wall being integral, and said segments and said wall defining in plan form a figure eight configuration for the housing, said housing adapted to be disposed in the ground with the upper ends of the segments being adjacent to ground level, one of the segments having an open, upper, ora-receiving end; an ore crusher; means mounting the ore crusher in said one segment below the upper end thereof; a first, generally horizontal feeder in said one segment below the ore crusher and extending into the other segment; an in-clined conveyor in the other segment and extending outwardly therefrom, said conveyor having a lower end aligned with and disposed below the proximal end of the first feeder;
elevator means in the second segment between the upper and lower ends thereof; and access hatches through the floors of the second segment for entry and removal of mechanical and electrical parts.
elevator means in the second segment between the upper and lower ends thereof; and access hatches through the floors of the second segment for entry and removal of mechanical and electrical parts.
13. Apparatus as set forth in claim 12, wherein said crusher mounting means includes a corbel or floor integral with said one segment and extending inwardly from the inner surface thereof.
14. Apparatus as set forth in claim 12, wherein is included a drive motor having a drive shaft, means in said other segment for mounting the drive motor therein, said wall having an opening therein, said drive shaft extending through said opening and being coupled to said ore crusher for actuating the same.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/574,217 US4018396A (en) | 1975-05-05 | 1975-05-05 | Embedded housing for ore crusher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1067476A true CA1067476A (en) | 1979-12-04 |
Family
ID=24295185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA251,700A Expired CA1067476A (en) | 1975-05-05 | 1976-05-03 | Embedded housing for ore crusher |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4018396A (en) |
| BR (1) | BR7602780A (en) |
| CA (1) | CA1067476A (en) |
| ZA (1) | ZA762698B (en) |
Families Citing this family (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2641620B2 (en) * | 1976-09-16 | 1978-12-14 | Polysius Ag, 4720 Beckum | Roller mill with classifier |
| US8512718B2 (en) | 2000-07-03 | 2013-08-20 | Foamix Ltd. | Pharmaceutical composition for topical application |
| WO2004037225A2 (en) | 2002-10-25 | 2004-05-06 | Foamix Ltd. | Cosmetic and pharmaceutical foam |
| IL152486A0 (en) | 2002-10-25 | 2003-05-29 | Meir Eini | Alcohol-free cosmetic and pharmaceutical foam carrier |
| US7704518B2 (en) | 2003-08-04 | 2010-04-27 | Foamix, Ltd. | Foamable vehicle and pharmaceutical compositions thereof |
| US9211259B2 (en) | 2002-11-29 | 2015-12-15 | Foamix Pharmaceuticals Ltd. | Antibiotic kit and composition and uses thereof |
| US9668972B2 (en) | 2002-10-25 | 2017-06-06 | Foamix Pharmaceuticals Ltd. | Nonsteroidal immunomodulating kit and composition and uses thereof |
| US20080138296A1 (en) | 2002-10-25 | 2008-06-12 | Foamix Ltd. | Foam prepared from nanoemulsions and uses |
| US10117812B2 (en) | 2002-10-25 | 2018-11-06 | Foamix Pharmaceuticals Ltd. | Foamable composition combining a polar solvent and a hydrophobic carrier |
| US9265725B2 (en) | 2002-10-25 | 2016-02-23 | Foamix Pharmaceuticals Ltd. | Dicarboxylic acid foamable vehicle and pharmaceutical compositions thereof |
| US7700076B2 (en) | 2002-10-25 | 2010-04-20 | Foamix, Ltd. | Penetrating pharmaceutical foam |
| US20070292461A1 (en) * | 2003-08-04 | 2007-12-20 | Foamix Ltd. | Oleaginous pharmaceutical and cosmetic foam |
| US8900554B2 (en) | 2002-10-25 | 2014-12-02 | Foamix Pharmaceuticals Ltd. | Foamable composition and uses thereof |
| US7820145B2 (en) | 2003-08-04 | 2010-10-26 | Foamix Ltd. | Oleaginous pharmaceutical and cosmetic foam |
| US8486376B2 (en) | 2002-10-25 | 2013-07-16 | Foamix Ltd. | Moisturizing foam containing lanolin |
| US7575739B2 (en) | 2003-04-28 | 2009-08-18 | Foamix Ltd. | Foamable iodine composition |
| US20080069779A1 (en) * | 2003-08-04 | 2008-03-20 | Foamix Ltd. | Foamable vehicle and vitamin and flavonoid pharmaceutical compositions thereof |
| US8486374B2 (en) | 2003-08-04 | 2013-07-16 | Foamix Ltd. | Hydrophilic, non-aqueous pharmaceutical carriers and compositions and uses |
| US8795693B2 (en) | 2003-08-04 | 2014-08-05 | Foamix Ltd. | Compositions with modulating agents |
| ZA200507017B (en) * | 2004-02-04 | 2007-03-28 | Foamix Ltd | Cosmetic and pharmaceutical foam with solid matter |
| US20070069046A1 (en) * | 2005-04-19 | 2007-03-29 | Foamix Ltd. | Apparatus and method for releasing a measure of content from a plurality of containers |
| US20080260655A1 (en) | 2006-11-14 | 2008-10-23 | Dov Tamarkin | Substantially non-aqueous foamable petrolatum based pharmaceutical and cosmetic compositions and their uses |
| US8636982B2 (en) | 2007-08-07 | 2014-01-28 | Foamix Ltd. | Wax foamable vehicle and pharmaceutical compositions thereof |
| WO2009056991A2 (en) * | 2007-09-04 | 2009-05-07 | Foamix Ltd. | Device for delivery of a foamable composition |
| US9439857B2 (en) | 2007-11-30 | 2016-09-13 | Foamix Pharmaceuticals Ltd. | Foam containing benzoyl peroxide |
| WO2009072007A2 (en) | 2007-12-07 | 2009-06-11 | Foamix Ltd. | Carriers, formulations, methods for formulating unstable active agents for external application and uses thereof |
| WO2010041141A2 (en) | 2008-10-07 | 2010-04-15 | Foamix Ltd. | Oil-based foamable carriers and formulations |
| EP2242476A2 (en) | 2008-01-14 | 2010-10-27 | Foamix Ltd. | Poloxamer foamable pharmaceutical compositions with active agents and/or therapeutic cells and uses |
| CA2760186C (en) | 2009-04-28 | 2019-10-29 | Foamix Ltd. | Foamable vehicle and pharmaceutical compositions comprising aprotic polar solvents and uses thereof |
| CA2769625C (en) | 2009-07-29 | 2017-04-11 | Foamix Ltd. | Non surfactant hydro-alcoholic foamable compositions, breakable foams and their uses |
| CA2769677A1 (en) | 2009-07-29 | 2011-02-03 | Foamix Ltd. | Non surface active agent non polymeric agent hydro-alcoholic foamable compositions, breakable foams and their uses |
| US8945516B2 (en) | 2009-10-02 | 2015-02-03 | Foamix Pharmaceuticals Ltd. | Surfactant-free water-free foamable compositions, breakable foams and gels and their uses |
| US9849142B2 (en) | 2009-10-02 | 2017-12-26 | Foamix Pharmaceuticals Ltd. | Methods for accelerated return of skin integrity and for the treatment of impetigo |
| US8979009B2 (en) * | 2009-12-29 | 2015-03-17 | Flsmidth A/S | Concrete crusher |
| WO2012007843A2 (en) | 2010-07-12 | 2012-01-19 | Foamix Ltd. | Apparatus and method for releasing a unit dose of content from a container |
| CA2978573A1 (en) | 2016-09-08 | 2018-03-08 | Foamix Pharmaceuticals Ltd. | Compositions and methods for treating rosacea and acne |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1307432A (en) * | 1919-06-24 | Theqdobe aten | ||
| US2917138A (en) * | 1955-05-20 | 1959-12-15 | Walsh Mfg Company | Storage structure for farm crops |
| US3289366A (en) * | 1962-01-02 | 1966-12-06 | Ned H Abrams | Structural members and structures |
| GB1021627A (en) * | 1963-10-14 | 1966-03-09 | Duodec Dev And Construction Co | Improvements in or relating to silos |
-
1975
- 1975-05-05 US US05/574,217 patent/US4018396A/en not_active Expired - Lifetime
-
1976
- 1976-05-03 CA CA251,700A patent/CA1067476A/en not_active Expired
- 1976-05-04 BR BR2780/76A patent/BR7602780A/en unknown
- 1976-05-05 ZA ZA762698A patent/ZA762698B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU1366276A (en) | 1977-11-10 |
| US4018396A (en) | 1977-04-19 |
| ZA762698B (en) | 1977-04-27 |
| BR7602780A (en) | 1976-11-09 |
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