CN113649101A - Device and process method for comprehensively utilizing low-grade lead-zinc ore - Google Patents
Device and process method for comprehensively utilizing low-grade lead-zinc ore Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 40
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 92
- 238000005188 flotation Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 7
- 239000011707 mineral Substances 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000000498 ball milling Methods 0.000 claims description 18
- 238000012216 screening Methods 0.000 claims description 17
- 239000012141 concentrate Substances 0.000 claims description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 12
- 239000011701 zinc Substances 0.000 claims description 12
- 229910052725 zinc Inorganic materials 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003814 drug Substances 0.000 abstract description 4
- 238000000227 grinding Methods 0.000 abstract description 4
- 238000005065 mining Methods 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 27
- 239000004575 stone Substances 0.000 description 6
- 239000010878 waste rock Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/02—Jaw crushers or pulverisers
- B02C1/04—Jaw crushers or pulverisers with single-acting jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2/00—Crushing or disintegrating by gyratory or cone crushers
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
Abstract
The invention belongs to the technical field of mineral processing, and particularly provides a device and a process method for comprehensively utilizing low-grade lead-zinc ores, wherein the method comprises sorting and material preparation operation, sorting operation, flotation operation material preparation operation and aggregate processing operation, solves the problems of high mining cost, large quantity of tailings generated after flotation and high cost of tailings storage of the low-grade lead-zinc ores, has the characteristics of improving the grade of raw ores fed by flotation, reducing the medicament cost and the ore grinding cost of a mineral separation system, reducing the ore quantity input into the tailings and prolonging the service life of a tailing pond, and simultaneously utilizes discarded low-grade waste rocks to manufacture aggregate products, so that better economic benefits can be obtained after external sales, and the low-grade lead-zinc ores are comprehensively utilized.
Description
Technical Field
The invention belongs to the technical field of mineral processing, and particularly relates to a device and a process method for comprehensively utilizing low-grade lead-zinc ores.
Background
With the continuous development of resources, the raw ore grade of lead-zinc ore resources in China is lower and lower, the mining cost is higher and higher, and the difficulty for obtaining the same qualified concentrate is higher. More tailings are produced at the same time, and a larger tailing pond is required to be built for storage. Therefore, how to realize comprehensive utilization of the ore is one of the important points of research.
At present, the research is mostly focused on the problem of how to improve the beneficiation recovery rate of lead and zinc for the ores, the adopted means are mostly the beneficiation process improvement and the research and development of new medicaments, and the research on the aspects of improving the ore feeding quality, reducing the tailing amount and the like is less.
Disclosure of Invention
The invention provides a device and a process method for comprehensively utilizing low-grade lead-zinc ores, and aims to solve the problems that the low-grade lead-zinc ores are high in mining cost, large in tailing amount generated after flotation and high in tailing storage cost in the prior art.
Therefore, the invention provides a process method for comprehensively utilizing low-grade lead-zinc ore, which comprises the following steps: separation and material preparation: coarsely crushing the mineral materials, screening the coarsely crushed materials into a first-grade material, a second-grade material and a third-grade material, feeding the first-grade material into a ball milling device, feeding the second-grade material into the second step, and coarsely crushing the third-grade material again by repeating the steps;
step two: sorting operation: separating the second-grade material into concentrate and tailings, wherein the concentrate enters the third step and the tailings enter the fourth step;
step three: preparing materials in flotation operation: fine crushing the concentrate, screening the fine crushed material into a first-grade material and a second-grade material, feeding the screened first-grade material into a ball milling device, and repeating the third step on the second-grade material to perform fine crushing again;
step four: aggregate processing operation: the tailings with low lead and zinc content are used as aggregate raw materials to be finely crushed, and the finely crushed aggregates are screened and then transported out.
Preferably, the particle size of the first fraction material is less than 12mm, the particle size of the second fraction material is 12-60mm, and the particle size of the third fraction material is greater than 60 mm.
Preferably, the coarse crushing is carried out using a jaw crusher.
Preferably, the screening is carried out by adopting a vibrating screen.
Preferably, in the first step, the coarsely crushed material is conveyed to a vibrating screen by a belt conveyor for screening.
Preferably, in the second step, the second-size-fraction materials are sorted by an X-ray intelligent sorting machine.
Preferably, the fine crushing is carried out using a cone crusher.
Preferably, the lead and zinc content is low, and the lead and zinc grade is less than 5%.
A device for comprehensively utilizing low-grade lead-zinc ore comprises an ore bin and a ball milling device, and further comprises a feeding machine, a jaw crusher, a first double-layer vibrating screen, an X-ray intelligent sorting machine, a first cone crusher, a second double-layer vibrating screen, a three-layer vibrating screen, a first belt conveyor, a second belt conveyor, a third belt conveyor, a fourth belt conveyor, a fifth belt conveyor, a sixth belt conveyor, a seventh belt conveyor, an eighth belt conveyor, a ninth belt conveyor, a tenth belt conveyor, an eleventh belt conveyor, a twelfth belt conveyor, a thirteenth belt conveyor, a fourteenth belt conveyor and a fifteenth belt conveyor, wherein the feeding machine is positioned below the ore bin, the feeding machine, the jaw crusher, the second belt conveyor and the first double-layer vibrating screen are sequentially connected, the first path of the outlet end of the first double-layer vibrating screen is connected with the ball milling device through the third belt conveyor, the second path of the outlet end of the first double-layer vibrating screen is connected with the inlet end of the X-ray intelligent sorting machine through a fifth belt conveyor, the third path of the outlet end of the first double-layer vibrating screen is connected with the inlet end of the first belt conveyor through a fourth belt conveyor, and the outlet end of the first belt conveyor is connected with the inlet end of a jaw crusher; one path of an outlet end of the X-ray intelligent sorting machine is sequentially connected with a sixth belt conveyor, a first cone crusher, an eighth belt conveyor and an inlet end of a second double-layer vibrating screen, one path of an outlet end of the second double-layer vibrating screen is connected with a ball milling device through an eleventh belt conveyor, and the other path of the outlet end of the second double-layer vibrating screen is connected with an inlet of the first cone crusher through a tenth belt conveyor; the other path of the outlet end of the X-ray intelligent sorting machine is sequentially connected with a seventh belt conveyor, a second cone crusher, a ninth belt conveyor and the inlet ends of three layers of vibrating sieves, the outlet ends of the three layers of vibrating sieves are respectively connected with the inlet end of a twelfth belt conveyor, the inlet end of a thirteenth belt conveyor, the inlet end of a fourteenth belt conveyor and the inlet end of a fifteenth belt conveyor, and the outlet end of the fourteenth belt conveyor is connected with the inlet end of the second cone crusher.
Preferably, the feeder is a heavy duty slat feeder.
The invention has the beneficial effects that: the device and the process method for comprehensively utilizing the low-grade lead-zinc ore provided by the invention have the advantages that low-grade waste rock is thrown away in advance from the perspective of integral development, the raw ore grade of flotation feeding is improved, the medicament cost and the ore grinding cost of an ore dressing system are reduced, the ore dressing index is further improved, the ore quantity input into tailings is also reduced, the service life of a tailing pond is prolonged, meanwhile, the discarded low-grade waste rock is utilized to manufacture aggregate products, and better economic benefit can be obtained after external sale, so that the low-grade lead-zinc ore is comprehensively utilized.
Drawings
The present invention will be described in further detail below with reference to the accompanying drawings.
FIG. 1 is a flow chart of a process for comprehensive utilization of low-grade lead-zinc ore.
Description of reference numerals: 1. ore storage; 2. a heavy duty slat feeder; 3. a jaw crusher; 4. a first double-deck vibrating screen; 5. an X-ray intelligent sorting machine; 6. a first cone crusher; 7. a second cone crusher; 8. a second double-deck vibrating screen; 9. three layers of vibrating screens; 10. 10-20mm stone yard; 11. a 20-31.5mm stone yard; 12. a 0-10mm stone yard; 13. a first belt conveyor; 14. a second belt conveyor; 15. a third belt conveyor; 16. a fourth belt conveyor; 17. a fifth belt conveyor; 18. a sixth belt conveyor; 19. a seventh belt conveyor; 20. an eighth belt conveyor; 21. a ninth belt conveyor; 22. a tenth belt conveyor; 23. an eleventh belt conveyor; 24. a twelfth belt conveyor; 25. a thirteenth belt conveyor; 26. a fourteenth belt conveyor; 27. a fifteenth belt conveyor; 28. a ball milling device.
Detailed Description
Example 1:
as shown in figure 1, a process method for comprehensively utilizing low-grade lead-zinc ore comprises the following steps: separation and material preparation: coarsely crushing the mineral materials, screening the coarsely crushed materials into a first-grade material, a second-grade material and a third-grade material, feeding the first-grade material into a ball milling device, feeding the second-grade material into the second step, and coarsely crushing the third-grade material again by repeating the steps;
step two: sorting operation: separating the second-grade material into concentrate and tailings, wherein the concentrate enters the third step and the tailings enter the fourth step;
step three: preparing materials in flotation operation: fine crushing the concentrate, screening the fine crushed material into a first-grade material and a second-grade material, feeding the screened first-grade material into a ball milling device, and repeating the third step on the second-grade material to perform fine crushing again;
step four: aggregate processing operation: the tailings with low lead and zinc content are used as aggregate raw materials to be finely crushed, and the finely crushed aggregates are screened and then transported out. The finely-crushed aggregate is screened according to the particle size range, and the particle size range is adjusted according to needs in actual use so as to meet market demands and create value to the maximum extent.
The low-grade lead-zinc ore is a lead-zinc ore product which is between the boundary grade and the lowest industrial grade and has no mining value under the current economic and technical conditions; the material is intelligently sorted and then divided into concentrate and tailings, the concentrate is prepared by flotation, the integral grade of lead and zinc is higher according to the standard of the concentrate, the higher the setting is, the lower the yield is, and the adjustment is needed according to the actual requirement; the tailings are used as aggregate processing raw materials, and the standard of the tailings is adjusted according to actual requirements.
The method discards low-grade waste rock in advance from the perspective of integral development, improves the raw ore grade of flotation feeding, reduces the reagent cost and the ore grinding cost of an ore dressing system, further improves the ore dressing index, reduces the ore quantity of input tailings, prolongs the service life of a tailing pond, and simultaneously utilizes the discarded low-grade waste rock to manufacture aggregate products, so that better economic benefit can be obtained after external sale, and the low-grade lead-zinc ore is comprehensively utilized.
Example 2:
on the basis of example 1, the particle size of the first fraction material is <12mm, the particle size of the second fraction material is 12-60mm, and the particle size of the third fraction material is >60 mm. The three particle size materials have reasonable particle size range, meet the actual requirement, are easy to screen and improve the screening efficiency.
Preferably, the coarse crushing is carried out using a jaw crusher. The jaw crusher has deep crushing cavity, no dead zone, high material feeding capacity, high crushing ratio, homogeneous product granularity, simple structure, reliable performance, simple maintenance, low operation cost, low noise and less dust.
Preferably, the screening is carried out by adopting a vibrating screen. The vibrating screen has the characteristics of stability, reliability, less consumption, low noise, long service life, stable vibration mode and high screening efficiency.
Preferably, in the first step, the coarsely crushed material is conveyed to a vibrating screen by a belt conveyor for screening. Compared with other transportation tools, such as the characteristics of troublesome automobile turnover and low efficiency, the belt conveyor has the advantages of continuous transportation, convenient transportation, simple structure, convenient maintenance and low cost.
Preferably, in the second step, the second-size-fraction materials are sorted by an X-ray intelligent sorting machine. Waste is thrown through the preselection of X ray intelligence sorter, rejects the barren rock in the raw ore, changes the barren rock into grit aggregate, reduces the extra loss of going into to grind simultaneously and floats, reduces the tailings and discharges.
Preferably, the fine crushing is carried out using a cone crusher. The crushing ratio is large, the production efficiency is high, the consumption of easily damaged parts is low, the operation cost is low, the lamination crushing is realized, the finished product grain shape is excellent, the maintenance is simple and convenient, the operation and the use are convenient, the higher production capacity and the optimal product grain shape can be provided, the automatic control is easy, the maximum reliability and the flexibility are realized, and more values are really created for users.
Preferably, the lead and zinc content is low, and the lead and zinc grade is less than 5%. The utilization rate of the low-grade lead-zinc ore is improved to the maximum extent.
Example 3:
as shown in figure 1, the device for comprehensively utilizing the low-grade lead-zinc ore comprises an ore bin 1 and a ball milling device 28, and further comprises a feeding machine 2, a jaw crusher 3, a first double-layer vibrating screen 4, an X-ray intelligent sorting machine 5, a first cone crusher 6, a second cone crusher 7, a second double-layer vibrating screen 8, a three-layer vibrating screen 9, a first belt conveyor 13, a second belt conveyor 14, a third belt conveyor 15, a fourth belt conveyor 16, a fifth belt conveyor 17, a sixth belt conveyor 18, a seventh belt conveyor 19, an eighth belt conveyor 20, a ninth belt conveyor 21, a tenth belt conveyor 22, an eleventh belt conveyor 23, a twelfth belt conveyor 24, a thirteenth belt conveyor 25, a fourteenth belt conveyor 26 and a fifteenth belt conveyor 27, wherein the feeding machine 2 is positioned below the ore bin 1, and the feeding machine 2, The jaw crusher 3, the second belt conveyor 14 and the first double-layer vibrating screen 4 are sequentially connected, a first path of an outlet end of the first double-layer vibrating screen 4 is connected with the ball milling device through a third belt conveyor 15, a second path of the outlet end of the first double-layer vibrating screen 4 is connected with an inlet end of the X-ray intelligent sorting machine 5 through a fifth belt conveyor 17, a third path of the outlet end of the first double-layer vibrating screen 4 is connected with an inlet end of a first belt conveyor 13 through a fourth belt conveyor 16, and an outlet end of the first belt conveyor 13 is connected with an inlet end of the jaw crusher 3; one path of the outlet end of the X-ray intelligent sorting machine 5 is sequentially connected with a sixth belt conveyor 18, a first cone crusher 6, an eighth belt conveyor 20 and the inlet end of a second double-layer vibrating screen 8, one path of the outlet end of the second double-layer vibrating screen 8 is connected with a ball milling device through an eleventh belt conveyor 23, and the other path of the outlet end of the second double-layer vibrating screen 8 is connected with the inlet of the first cone crusher 6 through a tenth belt conveyor 22; the other path of the outlet end of the X-ray intelligent sorting machine 5 is sequentially connected with a seventh belt conveyor 19, a second cone crusher 7, a ninth belt conveyor 21 and the inlet ends of three layers of vibrating screens 9, the outlet ends of the three layers of vibrating screens 9 are respectively connected with the inlet end of a twelfth belt conveyor 24, the inlet end of a thirteenth belt conveyor 25, the inlet end of a fourteenth belt conveyor 26 and the inlet end of a fifteenth belt conveyor 27, and the outlet end of the fourteenth belt conveyor 25 is connected with the inlet end of the second cone crusher 7.
The process method of the device for comprehensively utilizing the low-grade lead-zinc ore comprises the following steps:
the method comprises the following steps: separation and material preparation: mineral materials are transported to an ore bin 1 by an automobile, the materials in the ore bin 1 are conveyed to a jaw crusher 3 by a feeder 2 to be coarsely crushed, the coarsely crushed materials are conveyed to a first double-layer vibrating screen 4 by a second belt conveyor 14 to be screened, the first double-layer vibrating screen 4 screens the materials into materials with the particle size of 12mm, materials with the particle size of 12-60mm and materials with the particle size of more than 60mm, the materials with the particle size of 12mm enter a ball milling device through a third belt conveyor 15, the materials with the particle size of 12-60mm are input into an X-ray intelligent sorting machine 5 through a fifth belt conveyor 17 to be sorted, and the materials with the particle size of more than 60mm enter the jaw crusher 3 through a fourth belt conveyor 16 and a first belt conveyor 13 in sequence to be coarsely crushed again;
step two: sorting operation: the X-ray intelligent separator 5 separates the materials with the particle size of 12-60mm into concentrate and tailings, the concentrate enters the third step, and the tailings enter the fourth step;
step three: preparing materials in flotation operation: the concentrate is conveyed to the first cone crusher 6 through the sixth belt conveyor 18 to be finely crushed, the finely crushed materials are conveyed to the second double-layer vibrating screen 8 through the eighth belt conveyor 20 to be screened, the materials with the particle size of 12mm are conveyed to the ball milling device through the eleventh belt conveyor 23 after screening, and the materials with the particle size of 12-60mm are conveyed to the first cone crusher 6 through the tenth belt conveyor 22 to be finely crushed again;
step four: aggregate processing operation: the tailings with low lead and zinc content are used as aggregate raw materials and conveyed to a second cone crusher 7 by a seventh belt conveyor 19 for fine crushing, the fine crushed materials are conveyed to a three-layer vibrating screen 9 by a ninth belt conveyor 21 for screening, the sieved materials with the particle size of 0-10mm are conveyed to a stone storage yard 12 with the particle size of 0-10mm by a twelfth belt conveyor 24, the materials with the particle size of more than 31.5mm are conveyed to the second cone crusher 7 by a fourteenth belt conveyor 25 for secondary crushing, the materials with the particle size of 20-31.5mm are conveyed to a stone storage yard 11 with the particle size of 20-31.5mm by a fourteenth belt conveyor 26, and the materials with the particle size of 10-20mm are conveyed to a stone storage yard 10 with the particle size of 10-20mm by a fifteenth belt conveyor 27. The particle size range of the materials sieved by the three-layer vibrating screen 9 can be adjusted according to market conditions, and the adaptability is strong.
The device for comprehensively utilizing the low-grade lead-zinc ore has a simple structure and high intelligent degree, can throw off low-grade waste rock in advance, improves the raw ore grade of flotation feeding, reduces the medicament cost and the ore grinding cost of an ore dressing system, further improves the sorting index, reduces the ore quantity of input tailings, prolongs the service life of a tailing pond, and simultaneously utilizes the discarded low-grade waste rock to manufacture aggregate products, so that better economic benefit can be obtained after external sale, and the low-grade lead-zinc ore is comprehensively utilized.
Preferably, the feeder 2 is a heavy duty slat feeder. The heavy plate feeder has stable operation, easy operation and control, more stable starting and adjustment, uniform and accurate feeding, automatic feedback feeding realized by the feeding speed which can be linked with the host machine, and very high efficiency of the subsequent equipment capacity; the tensioning device is designed in a buffering mode, and vibration impact of equipment is reduced. The feeding granularity is large, the feeding device can be directly arranged below a raw material bin and can bear larger bin pressure; the device is less influenced by material granularity components, temperature, viscosity, frost, rain and snow or ice materials, has strong environmental adaptability, can operate under severe working condition environment, and has high equipment strength and simple installation and maintenance.
In the description of the present invention, it is to be understood that the terms "lower" and the like, if any, refer to an orientation or positional relationship based on that shown in the drawings, and do not indicate or imply that the referenced device or element must have a particular orientation, configuration, and operation in a particular orientation, and therefore, the terms describing a positional relationship in the drawings are used for illustrative purposes only and should not be construed as limiting the present invention.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (10)
1. A process method for comprehensively utilizing low-grade lead-zinc ore is characterized by comprising the following steps:
the method comprises the following steps: separation and material preparation: coarsely crushing the mineral materials, screening the coarsely crushed materials into a first-grade material, a second-grade material and a third-grade material, feeding the first-grade material into a ball milling device, feeding the second-grade material into the second step, and coarsely crushing the third-grade material again by repeating the steps;
step two: sorting operation: separating the second-grade material into concentrate and tailings, wherein the concentrate enters the third step and the tailings enter the fourth step;
step three: preparing materials in flotation operation: fine crushing the concentrate, screening the fine crushed material into a first-grade material and a second-grade material, feeding the screened first-grade material into a ball milling device, and repeating the third step on the second-grade material to perform fine crushing again;
step four: aggregate processing operation: the tailings with low lead and zinc content are used as aggregate raw materials to be finely crushed, and the finely crushed aggregates are screened and then transported out.
2. The process method for comprehensively utilizing the low-grade lead-zinc ore according to claim 1, characterized by comprising the following steps: the grain size of the first-grade material is less than 12mm, the grain size of the second-grade material is 12-60mm, and the grain size of the third-grade material is more than 60 mm.
3. The process method for comprehensively utilizing the low-grade lead-zinc ore according to claim 1, characterized by comprising the following steps: coarse crushing by a jaw crusher.
4. The process method for comprehensively utilizing the low-grade lead-zinc ore according to claim 1, characterized by comprising the following steps: and a vibrating screen is adopted for screening during screening.
5. The process method for comprehensively utilizing the low-grade lead-zinc ore according to claim 4, characterized by comprising the following steps: and step one, conveying the coarsely crushed materials to a vibrating screen by using a belt conveyor for screening.
6. The process method for comprehensively utilizing the low-grade lead-zinc ore according to claim 1, characterized by comprising the following steps: and step two, sorting the second-grade materials by adopting an X-ray intelligent sorting machine.
7. The process method for comprehensively utilizing the low-grade lead-zinc ore according to claim 1, characterized by comprising the following steps: and (3) finely crushing by using a cone crusher.
8. The process method for comprehensively utilizing the low-grade lead-zinc ore according to claim 1, characterized by comprising the following steps: the lead and zinc content is low, and the lead and zinc grade is less than 5%.
9. The utility model provides a device that low-grade lead-zinc ore was used multipurposely, includes ore bin (1) and ball-milling device (28), its characterized in that: also comprises a feeding machine (2), a jaw crusher (3), a first double-layer vibrating screen (4), an X-ray intelligent sorting machine (5), a first cone crusher (6), a second cone crusher (7), a second double-layer vibrating screen (8), a three-layer vibrating screen (9), a first belt conveyor (13), a second belt conveyor (14), a third belt conveyor (15), a fourth belt conveyor (16), a fifth belt conveyor (17), a sixth belt conveyor (18), a seventh belt conveyor (19), an eighth belt conveyor (20), a ninth belt conveyor (21), a tenth belt conveyor (22), an eleventh belt conveyor (23), a twelfth belt conveyor (24), a thirteenth belt conveyor (25), a fourteenth belt conveyor (26) and a fifteenth belt conveyor (27), wherein the feeding machine (2) is positioned below the ore bin (1), the feeding machine (2), the jaw crusher (3), the second belt conveyor (14) and the first double-layer vibrating screen (4) are sequentially connected, a first path of an outlet end of the first double-layer vibrating screen (4) is connected with a ball milling device through a third belt conveyor (15), a second path of the outlet end of the first double-layer vibrating screen (4) is connected with an inlet end of an X-ray intelligent sorting machine (5) through a fifth belt conveyor (17), a third path of the outlet end of the first double-layer vibrating screen (4) is connected with an inlet end of a first belt conveyor (13) through a fourth belt conveyor (16), and an outlet end of the first belt conveyor (13) is connected with an inlet end of the jaw crusher (3); one path of the outlet end of the X-ray intelligent sorting machine (5) is sequentially connected with the inlet ends of a sixth belt conveyor (18), a first cone crusher (6), an eighth belt conveyor (20) and a second double-layer vibrating screen (8), one path of the outlet end of the second double-layer vibrating screen (8) is connected with a ball milling device through an eleventh belt conveyor (23), and the other path of the outlet end of the second double-layer vibrating screen (8) is connected with the inlet of the first cone crusher (6) through a tenth belt conveyor (22); the other path of the outlet end of the X-ray intelligent sorting machine (5) is sequentially connected with the inlet ends of a seventh belt conveyor (19), a second cone crusher (7), a ninth belt conveyor (21) and a three-layer vibrating screen (9), the outlet end of the three-layer vibrating screen (9) is respectively connected with the inlet end of a twelfth belt conveyor (24), the inlet end of a thirteenth belt conveyor (25), the inlet end of a fourteenth belt conveyor (26) and the inlet end of a fifteenth belt conveyor (27), and the outlet end of the fourteenth belt conveyor (25) is connected with the inlet end of the second cone crusher (7).
10. The apparatus for comprehensive utilization of low-grade lead-zinc ore according to claim 9, characterized in that: the feeder (2) is a heavy plate feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN115501961A (en) * | 2022-07-31 | 2022-12-23 | 秦国防 | Full autogenous grinding system and method capable of achieving yield quickly |
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