A molybdenum ore four-product beneficiation system

Abstract

The utility model discloses a four-product mineral separation system of molybdenum ore, and the design includes the ball mill of one, one classifier, molybdenum rough flotation column and two classifiers that are connected in turn, the tailing discharge port of molybdenum rough flotation column is connected molybdenum rough scanning unit, and the overflow ore discharge port of two classifiers is connected molybdenum copper cleaning unit, and molybdenum rough scanning unit includes the first molybdenum rough scanning machine, second molybdenum rough scanning machine and third molybdenum rough scanning machine that are connected in turn, and the tailing discharge port of third molybdenum rough scanning machine is connected with sulfur mineral separation unit, and this mineral separation system can increase sulfur iron element product type while selecting molybdenum copper element, improves product quality and recovery rate, increases enterprise benefit, improves the utilization rate of mine resources and mineral separation comprehensive recovery rate, meets the principle of can select the principle of as much as possible, and the molybdenum, copper, iron, sulfur element with recovery value is carried out maximum resource recovery.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing technology for non-ferrous and ferrous metals, and relates to a four-product mineral processing system for molybdenum ore. Background Technology

[0002] Jinduicheng molybdenum mine is a large molybdenum deposit, ranking first in the country in molybdenum concentrate production. It boasts abundant reserves, with proven ore reserves of approximately one billion tons. The mine is a typical porphyry molybdenum deposit, with the ore body divided into a north open-pit and a south open-pit. The ore rocks in the north open-pit are mainly granite porphyry and andesite porphyry, while the upper part of the south open-pit is mainly quartzite, and the lower part is mainly andesite porphyry. The main metallic minerals in the ore from both the north and south open-pit mines are molybdenite, pyrite, and minor amounts of chalcopyrite, magnetite, pyrrhotite, chalcocite, galena, and sphalerite. Gangue minerals are mainly quartz, with minor amounts of feldspar, fluorite, mica, and chlorite. Molybdenite is disseminated in fine veinlets, with a grain size generally ranging from 0.027 to 0.045 mm, and is closely related to quartz, pyrite, chalcopyrite, and sphalerite. The raw ore entering the beneficiation plant after being mixed in the open-pit mines in the north and south has the following metal grades: Mo 0.09-0.135%, Cu 0.026-0.035%, S 2.20-2.60%, TFe 5.5-6.30%, Lead 0.007-0.011%, and Carbon 0.40-0.45%. The existing beneficiation system only screens out molybdenum and copper, while other elements are not refined and are all sent to the tailings, resulting in a waste of resources. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a four-product beneficiation system for molybdenum ore, which can solve the technical problems of low resource utilization and low comprehensive recovery rate of existing molybdenum ore beneficiation.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A four-product beneficiation system for molybdenum ore includes a No. 1 ball mill, the discharge port of which is connected to the inlet of a No. 1 classifier, the overflow discharge port of which is connected to the inlet of a molybdenum rough flotation column, the sediment discharge port of which is connected to the inlet of the No. 1 ball mill, the concentrate discharge port of which is connected to the inlet of a No. 2 classifier, the tailings discharge port of which is connected to a molybdenum coarse scavenging unit, the overflow discharge port of which is connected to a molybdenum-copper beneficiation unit, the sediment discharge port of which is connected to the inlet of the No. 2 ball mill, and the discharge port of which is connected to the inlet of the No. 2 classifier. The molybdenum coarse scavenging unit includes a first molybdenum coarse scavenger, a second molybdenum coarse scavenger, and a third molybdenum coarse scavenger. The tailings outlet of the molybdenum coarse flotation column is connected to the inlet of the first molybdenum coarse scavenger. The tailings outlet of the first molybdenum coarse scavenger is connected to the inlet of the second molybdenum coarse scavenger. The tailings outlet of the second molybdenum coarse scavenger is connected to the inlet of the third molybdenum coarse scavenger. The tailings outlet of the third molybdenum coarse scavenger is connected to a sulfur beneficiation unit. The concentrate outlet of the first molybdenum coarse scavenger is connected to the inlet of the molybdenum coarse flotation column. The concentrate outlets of both the second and third molybdenum coarse scavengers are connected to the inlet of the first molybdenum coarse scavenger.

[0005] This utility model also includes the following technical features: The molybdenum-copper refining unit includes a molybdenum refining subunit and a copper refining subunit. The molybdenum refining subunit includes a primary molybdenum flotation column whose inlet is connected to the overflow discharge port of the second classifier. The concentrate discharge port of the primary molybdenum flotation column is connected to the inlet of the first vertical mill. The discharge port of the first vertical mill is connected to the inlet of the secondary molybdenum flotation column. The concentrate discharge port of the secondary molybdenum flotation column is connected to the inlet of the tertiary molybdenum flotation column. The concentrate outlet of the flotation column is connected to the feed inlet of the second vertical mill. The discharge outlet of the second vertical mill is connected to the feed inlet of the fourth-stage molybdenum flotation column. The concentrate outlet of the fourth-stage molybdenum flotation column is connected to the feed inlet of the fifth-stage molybdenum flotation column. The discharge outlet of the fifth-stage molybdenum flotation column is connected to the molybdenum concentrate collection unit. The tailings outlets of the third-stage, fourth-stage, and fifth-stage molybdenum flotation columns are respectively connected to the feed inlet of the previous stage molybdenum flotation column. The copper beneficiation subunit includes a primary molybdenum scavenger, a secondary molybdenum scavenger, a tertiary molybdenum scavenger, and a quaternary molybdenum scavenger. The feed inlet of the primary molybdenum scavenger is connected to the tailings outlet of the primary molybdenum flotation column. The tailings outlets of the primary, secondary, and tertiary molybdenum scavengers are connected to the feed inlets of the next-level molybdenum scavengers. The tailings outlet of the secondary molybdenum flotation column and the concentrate outlet of the primary molybdenum scavenger are both connected to the feed inlet of the No. 2 classifier. The concentrate outlets of the secondary, tertiary, and quaternary molybdenum scavengers are connected to the feed inlets of the previous-level molybdenum scavengers. The tailings outlet of the quaternary molybdenum scavenger is connected to a No. 1 center-driven thickener. The slurry discharge outlet of the No. 1 center-driven thickener is connected to a copper rougher. The overflow discharge port of the No. 1 center-driven thickener is connected to the main tailings collection unit. The concentrate discharge port of the copper rougher is connected to the feed port of the first copper cleaner. The concentrate discharge port of the first copper cleaner is connected to the feed port of the second copper cleaner. The concentrate discharge port of the second copper cleaner is connected to the copper concentrate collection unit. The tailings discharge port of the copper rougher is connected to the first copper rougher scavenger. The tailings discharge port of the first copper rougher scavenger is connected to the second copper rougher scavenger. The tailings discharge port of the first copper cleaner is connected to the copper fine scavenger. The concentrate discharge port of the copper fine scavenger and the tailings discharge port of the second copper cleaner are connected to the feed port of the first copper cleaner. The tailings discharge port of the copper fine scavenger and the concentrate discharge port of the first copper rougher scavenger are both connected to the feed port of the copper rougher. The concentrate discharge port of the second copper rougher scavenger is connected to the feed port of the first copper rougher scavenger. The tailings outlet of the second copper roughing separator is connected to the first sulfur roughing separator. The concentrate outlet of the first sulfur roughing separator is connected to the first sulfur cleaning separator. The concentrate outlet of the first sulfur cleaning separator is connected to the sulfur concentrate collection unit. The tailings outlet of the first sulfur roughing separator is connected to the first sulfur scavenging separator. The tailings outlet of the first sulfur scavenging separator is connected to the total tailings collection unit. The tailings outlet of the first sulfur cleaning separator and the concentrate outlet of the first sulfur scavenging separator are connected to the feed inlet of the first sulfur roughing separator.

[0006] The sulfur beneficiation unit includes a sulfur beneficiation subunit and an iron beneficiation subunit. The sulfur beneficiation subunit includes a second sulfur rougher, the inlet of which is connected to the tailings outlet of the third molybdenum rougher / scavenger. The concentrate outlet of the second sulfur rougher is connected to the inlet of the second sulfur beneficiation unit, and the concentrate outlet of the second sulfur beneficiation unit is connected to the inlet of the third sulfur beneficiation unit. The concentrate outlet of the third sulfur beneficiation unit is connected to the sulfur concentrate collection unit. The tailings outlet of the second sulfur rougher is connected to the inlet of the second sulfur scavenger. The tailings outlet of the second sulfur beneficiation unit and the concentrate outlet of the second sulfur scavenger are both connected to the inlet of the second sulfur rougher. The tailings outlet of the third sulfur beneficiation unit is connected to the inlet of the second sulfur beneficiation unit. The tailings outlet of the second sulfur scavenger is connected to the iron beneficiation subunit.

[0007] The iron beneficiation subunit includes an iron rougher connected to the tailings outlet of the second sulfur scavenger; the concentrate outlet of the iron rougher connected to the feed inlet of a scrap separator; the concentrate outlet of the scrap separator connected to the feed inlet of a second center-driven thickener; the slurry discharge outlet of the second center-driven thickener connected to the feed inlet of a third ball mill; the discharge outlet of the third ball mill connected to the feed inlet of a third classifier; the sediment discharge outlet of the third classifier connected to the discharge outlet of the third ball mill; the overflow discharge outlet of the third classifier connected to the feed inlet of a desliming machine; and the concentrate outlet of the desliming machine connected to the feed inlet of a first ferromagnetic separator. The concentrate outlet of the first ferromagnetic separator is connected to the feed inlet of the second ferromagnetic separator. The concentrate outlet of the second ferromagnetic separator is connected to the feed inlet of the screening and classifying machine. The overflow discharge outlet of the screening and classifying machine is connected to the feed inlet of the third ferromagnetic separator. The concentrate outlet of the third ferromagnetic separator is connected to the iron concentrate collection unit. The sand discharge outlet of the screening and classifying machine and the tailings outlet of the third ferromagnetic separator are connected to the feed inlet of the third classifier. The tailings outlets of the iron roughing separator, the impurity remover, the desliming machine, the first and second ferromagnetic separators, and the overflow discharge outlet of the second center-driven thickener are all connected to the total tailings collection unit.

[0008] The No. 1 ball mill is a 55*85 overflow ball mill, the No. 2 ball mill is a 27*36 overflow ball mill, the No. 1 classifier consists of 8 φ710 hydrocyclones, and the No. 2 classifier consists of 4 φ250 hydrocyclones.

[0009] The molybdenum roughing flotation column includes two flotation columns with a diameter of 5*10m. The first-stage molybdenum finishing flotation column is a 2.4*12m flotation column, the second-stage molybdenum finishing flotation column is a 2.0*12m flotation column, the third-stage molybdenum finishing flotation column is a 1.8*12m flotation column, the fourth-stage molybdenum finishing flotation column is a 2.0*12m flotation column, and the fifth-stage molybdenum finishing flotation column is a 1.0*12m flotation column.

[0010] The first and second vertical mills mentioned are JM-1200 vertical mills.

[0011] The first molybdenum coarse scavenger, the second molybdenum coarse scavenger, the third molybdenum coarse scavenger, the first sulfur coarse scavenger, the second sulfur coarse scavenger, the first sulfur scavenger, and the second sulfur scavenger are all KCF / KYF-100 flotation machines; The first, second, and third sulfur separators all use KCF / KYF-8 flotation machines.

[0012] The copper roughing separator and the first copper roughing scavenger both use φ3*8m flotation columns, the first copper cleaning separator and the second copper cleaning separator both use φ1.8*10m flotation columns, the second copper roughing scavenger uses φ2.5*8m flotation columns, and the copper fine scavenger uses φ1.5*10m flotation columns.

[0013] The iron coarsening separator is a YLH-1500-12 magnetic separator, the impurity remover is a CTB-1024 magnetic separator, the third ball mill is an MQY-K9240 ball mill, the third classifier consists of 6 φ250 hydrocyclones, the desliming machine is a CXZ-1400 magnetic desliming trough, the first and second ferromagnetic separators are both CTB-1024 magnetic separators, the screening and grading machine is a D4FG1216 high-frequency vibrating screen, and the third ferromagnetic separator is a CXZ-1000 magnetic column.

[0014] Compared with the prior art, this utility model has the following technical effects: This utility model's mineral processing system, in addition to refining molybdenum and copper, also increases the variety of sulfur and iron products, improves product quality and recovery rate, increases enterprise benefits, improves the utilization rate of mineral resources and the overall recovery rate of mineral processing, meets the principle of refining as much as possible, and maximizes the resource recovery of molybdenum, copper, iron and sulfur elements with recovery value. Attached Figure Description

[0015] Figure 1 This is a flow chart of the mineral processing technology of this utility model.

[0016] Figure 2 This is a diagram showing the equipment association of the mineral processing system of this utility model.

[0017] The meanings of the labels in the diagram are as follows: 1. Ball mill No. 1; 2. Classifier No. 1; 3. Molybdenum rough flotation column; 4. Classifier No. 2; 5. Ball mill No. 2; 6. First molybdenum rough scavenger; 7. Second molybdenum rough scavenger; 8. Third molybdenum rough scavenger; 9. First-stage molybdenum fine flotation column; 10. First vertical mill; 11. Second-stage molybdenum fine flotation column; 12. Third-stage molybdenum fine flotation column; 13. Second vertical mill; 14. Fourth-stage molybdenum fine flotation column; 15. Fifth-stage molybdenum fine flotation column; 16. First-stage molybdenum fine scavenger; 17. Second-stage molybdenum fine scavenger; 18. Third-stage molybdenum fine scavenger; 19. Fourth-stage molybdenum fine scavenger; 20. Center-driven thickener No. 1; 21. Copper rougher; 22. 23. First copper separator, 24. First copper coarse separator, 25. Second copper coarse separator, 26. Copper fine separator, 27. First sulfur coarse separator, 28. First sulfur separator, 29. First sulfur scavenger, 30. Second sulfur coarse separator, 31. Second sulfur separator, 32. Third sulfur separator, 33. Second sulfur scavenger, 34. Iron coarse separator, 35. Impurity remover, 36. Second center-driven thickener, 37. Third ball mill, 38. Third classifier, 39. Desliming machine, 40. First ferromagnetic separator, 41. Second ferromagnetic separator, 42. Screening and grading machine, 43. Third ferromagnetic separator.

[0018] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0019] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0020] In this utility model, unless otherwise stated, directional terms such as "upper", "lower", "left", and "right" are generally defined based on the drawing in the corresponding figure; "inner" and "outer" refer to the inner and outer contours of the corresponding components; and "longitudinal", "transverse", and "vertical" refer to the directions marked in the figure.

[0021] Example: This embodiment provides a four-product beneficiation system for molybdenum ore, such as... Figure 2As shown, the system includes a No. 1 ball mill 1, the discharge port of the No. 1 ball mill 1 is connected to the feed port of the No. 1 classifier 2, the overflow discharge port of the No. 1 classifier 2 is connected to the feed port of the molybdenum rough flotation column 3, the sediment discharge port of the No. 1 classifier 2 is connected to the feed port of the No. 1 ball mill 1, the concentrate discharge port of the molybdenum rough flotation column 3 is connected to the feed port of the No. 2 classifier 4, the tailings discharge port of the molybdenum rough flotation column 3 is connected to the molybdenum coarse scavenging unit, the overflow discharge port of the No. 2 classifier 4 is connected to the molybdenum copper beneficiation unit, the sediment discharge port of the No. 2 classifier 4 is connected to the feed port of the No. 2 ball mill 5, and the discharge port of the No. 2 ball mill 5 is connected to the feed port of the No. 2 classifier 4. The molybdenum coarse flotation unit includes a first molybdenum coarse flotation machine 6, a second molybdenum coarse flotation machine 7, and a third molybdenum coarse flotation machine 8. The tailings outlet of the molybdenum coarse flotation column 3 is connected to the feed inlet of the first molybdenum coarse flotation machine 6. The tailings outlet of the first molybdenum coarse flotation machine 6 is connected to the feed inlet of the second molybdenum coarse flotation machine 7. The tailings outlet of the second molybdenum coarse flotation machine 7 is connected to the feed inlet of the third molybdenum coarse flotation machine 8. The tailings outlet of the third molybdenum coarse flotation machine 8 is connected to a sulfur beneficiation unit. The concentrate outlet of the first molybdenum coarse flotation machine 6 is connected to the feed inlet of the molybdenum coarse flotation column 3. The concentrate outlets of the second molybdenum coarse flotation machine 7 and the third molybdenum coarse flotation machine 8 are both connected to the feed inlet of the first molybdenum coarse flotation machine 6.

[0022] In this embodiment, in addition to the molybdenum-copper beneficiation unit, a sulfur beneficiation unit is further added to the tailings portion of the molybdenum-copper beneficiation unit, thereby increasing the variety of products and improving product quality and recovery rate.

[0023] As a preferred embodiment, the molybdenum-copper refining unit in this embodiment includes a molybdenum refining subunit and a copper refining subunit. The molybdenum refining subunit includes a primary molybdenum flotation column 9 whose inlet is connected to the overflow discharge port of the second classifier 4. The concentrate outlet of the primary molybdenum flotation column 9 is connected to the inlet of the first vertical mill 10. The outlet of the first vertical mill 10 is connected to the inlet of the secondary molybdenum flotation column 11. The concentrate outlet of the secondary molybdenum flotation column 11 is connected to the inlet of the tertiary molybdenum flotation column 12. The concentrate outlet of the third-stage molybdenum flotation column 12 is connected to the feed inlet of the second vertical mill 13. The discharge outlet of the second vertical mill 13 is connected to the feed inlet of the fourth-stage molybdenum flotation column 14. The concentrate outlet of the fourth-stage molybdenum flotation column 14 is connected to the feed inlet of the fifth-stage molybdenum flotation column 15. The discharge outlet of the fifth-stage molybdenum flotation column 15 is connected to the molybdenum concentrate collection unit. The tailings outlets of the third-stage molybdenum flotation column 12, the fourth-stage molybdenum flotation column 14, and the fifth-stage molybdenum flotation column 15 are respectively connected to the feed inlet of the previous stage molybdenum flotation column. The copper beneficiation subunit includes a primary molybdenum scavenger 16, a secondary molybdenum scavenger 17, a tertiary molybdenum scavenger 18, and a quaternary molybdenum scavenger 19. The feed inlet of the primary molybdenum scavenger 16 is connected to the tailings outlet of the primary molybdenum flotation column 9. The tailings outlets of the primary, secondary, and tertiary molybdenum scavengers 16, 17, and 18 are respectively connected to the feed inlets of the next-stage molybdenum scavenger. The tailings outlet of the secondary molybdenum flotation column 11 and... The concentrate outlet of the primary molybdenum scavenging separator 16 is connected to the feed inlet of the secondary classifier 4. The concentrate outlets of the secondary, tertiary, and quaternary molybdenum scavenging separators 17, 18, and 19 are connected to the feed inlets of the previous stage molybdenum scavenging separator, respectively. The tailings outlet of the quaternary molybdenum scavenging separator 19 is connected to the primary center-driven thickener 20. The slurry discharge outlet of the primary center-driven thickener 20 is connected to the copper rougher 21. The overflow discharge port of the thickener 20 is connected to the main tailings collection unit. The concentrate discharge port of the copper rougher 21 is connected to the feed port of the first copper cleaner 22. The concentrate discharge port of the first copper cleaner 22 is connected to the feed port of the second copper cleaner 23. The concentrate discharge port of the second copper cleaner 23 is connected to the copper concentrate collection unit. The tailings discharge port of the copper rougher 21 is connected to the first copper rougher scavenger 24. The tailings discharge port of the first copper rougher scavenger 24 is connected to the second copper rougher scavenger 24. 25. The tailings outlet of the first copper concentrator 22 is connected to the copper fine scavenger 26. The concentrate outlet of the copper fine scavenger 26 and the tailings outlet of the second copper concentrator 23 are connected to the feed inlet of the first copper concentrator 22. The tailings outlet of the copper fine scavenger 26 and the concentrate outlet of the first copper rough scavenger 24 are both connected to the feed inlet of the copper rougher scavenger 21. The concentrate outlet of the second copper rough scavenger 25 is connected to the feed inlet of the first copper rough scavenger 24. The tailings outlet of the second copper rougher scavenger 25 is connected to the first sulfur rougher 27. The concentrate outlet of the first sulfur rougher 27 is connected to the first sulfur cleaner 28. The concentrate outlet of the first sulfur cleaner 28 is connected to the sulfur concentrate collection unit. The tailings outlet of the first sulfur rougher 27 is connected to the first sulfur scavenger 29. The tailings outlet of the first sulfur scavenger 29 is connected to the total tailings collection unit. The tailings outlet of the first sulfur cleaner 28 and the concentrate outlet of the first sulfur scavenger 29 are connected to the feed inlet of the first sulfur rougher 27.

[0024] In a preferred embodiment, the sulfur beneficiation unit includes a sulfur refining subunit and an iron refining subunit. The sulfur refining subunit includes a second sulfur rougher 30, the inlet of which is connected to the tailings outlet of a third molybdenum rougher scavenger 8. The concentrate outlet of the second sulfur rougher 30 is connected to the inlet of a second sulfur refiner 31, and the concentrate outlet of the second sulfur refiner 31 is connected to the inlet of a third sulfur refiner 32. The concentrate outlet of the second sulfur rougher 30 is connected to the inlet of the second sulfur scavenger 33; the tailings outlet of the second sulfur cleaner 31 and the concentrate outlet of the second sulfur scavenger 33 are both connected to the inlet of the second sulfur rougher 30; the tailings outlet of the third sulfur cleaner 32 is connected to the inlet of the second sulfur cleaner 31; and the tailings outlet of the second sulfur scavenger 33 is connected to the iron cleaning subunit.

[0025] As a preferred embodiment, the iron refining subunit includes an iron roughing separator 34 connected to the tailings outlet of the second sulfur scavenger 33. The concentrate outlet of the iron roughing separator 34 is connected to the feed inlet of a scraper 35. The concentrate outlet of the scraper 35 is connected to the feed inlet of a second center-driven thickener 36. The slurry discharge outlet of the second center-driven thickener 36 is connected to the feed inlet of a third ball mill 37. The discharge outlet of the third ball mill 37 is connected to the feed inlet of a third classifier 38. The sediment discharge outlet of the third classifier 38 is connected to the discharge outlet of the third ball mill 37. The overflow discharge outlet of the third classifier 38 is connected to the feed inlet of a desliming machine 39. The concentrate outlet of the desliming machine 39 is connected to a first ferromagnetic separator. The feed inlet of separator 40 and the concentrate outlet of the first ferromagnetic separator 40 are connected to the feed inlet of the second ferromagnetic separator 41. The concentrate outlet of the second ferromagnetic separator 41 is connected to the feed inlet of the screening and classifying machine 42. The overflow discharge outlet of the screening and classifying machine 42 is connected to the feed inlet of the third ferromagnetic separator 43. The concentrate outlet of the third ferromagnetic separator 43 is connected to the iron concentrate collection unit. The sand discharge outlet of the screening and classifying machine 42 and the tailings discharge outlet of the third ferromagnetic separator 43 are connected to the feed inlet of the third classifier 38. The iron roughing separator 34, the impurity throwing machine 35, the desliming machine 39, the tailings discharge outlets of the first ferromagnetic separator 40 and the second ferromagnetic separator 41, and the overflow discharge outlet of the second center-driven thickener 36 are all connected to the total tailings collection unit.

[0026] As a preferred embodiment, in this embodiment, the No. 1 ball mill 1 is a 55*85 overflow ball mill, the No. 2 ball mill 5 is a 27*36 overflow ball mill, the No. 1 classifier 2 consists of 8 φ710 hydrocyclones, and the No. 2 classifier 4 consists of 4 φ250 hydrocyclones.

[0027] As a preferred embodiment, the molybdenum roughing flotation column 3 in this embodiment includes two flotation columns with a diameter of 5*10m, the first-stage molybdenum finishing flotation column 9 with a diameter of 2.4*12m, the second-stage molybdenum finishing flotation column 11 with a diameter of 2.0*12m, the third-stage molybdenum finishing flotation column 12 with a diameter of 1.8*12m, the fourth-stage molybdenum finishing flotation column 14 with a diameter of 2.0*12m, and the fifth-stage molybdenum finishing flotation column 15 with a diameter of 1.0*12m.

[0028] As a preferred embodiment, the first vertical mill 10 and the second vertical mill 13 in this embodiment are JM-1200 vertical mills.

[0029] As a preferred embodiment, the first molybdenum coarse scavenger 6, the second molybdenum coarse scavenger 7, the third molybdenum coarse scavenger 8, the first sulfur coarse scavenger 27, the second sulfur coarse scavenger 30, the first sulfur scavenger 29, and the second sulfur scavenger 33 are all KCF / KYF-100 flotation machines. The first sulfur separator 28, the second sulfur separator 31, and the third sulfur separator 32 all use KCF / KYF-8 flotation machines.

[0030] As a preferred embodiment, in this embodiment, both the copper roughing separator 21 and the first copper roughing scavenger 24 use flotation columns of φ3*8m, both the first copper cleaning separator 22 and the second copper cleaning separator 23 use flotation columns of φ1.8*10m, the second copper roughing scavenger 25 uses flotation columns of φ2.5*8m, and the copper cleaning scavenger 26 uses flotation columns of φ1.5*10m.

[0031] As a preferred embodiment, the iron coarsening separator 34 is a YLH-1500-12 magnetic separator, the impurity remover 35 is a CTB-1024 magnetic separator, the third ball mill 37 is an MQY-K9240 ball mill, the third classifier consists of 6 φ250 hydrocyclones, the desliming machine 39 is a CXZ-1400 magnetic desliming trough, the first ferromagnetic separator 40 and the second ferromagnetic separator 41 are both CTB-1024 magnetic separators, the screening and grading machine 42 is a D4FG1216 high-frequency vibrating screen, and the third ferromagnetic separator 43 is a CXZ-1000 magnetic separation column.

[0032] Combination Figure 1 The mineral processing technology shown above, and the process flow of the above mineral processing system are as follows: Step 1: The ore transported from the mine is crushed to -7.5mm (80%). The crushed ore is fed into ball mill 1 for grinding. The grinding product is classified by classifier 2. The coarse particles are returned to ball mill 1 for regrinding. The fine particles (-0.074mm, 55%-60%) are fed into molybdenum roughing flotation column 3 for copper-molybdenum mixed flotation, i.e., molybdenum roughing. The molybdenum roughing concentrate is obtained through one roughing process.

[0033] Step 2: The molybdenum roughing concentrate is classified by the No. 2 classifier 4. The coarse-grained product is regrinded in the No. 2 ball mill 5, and the fine-grained product is regrinded in the first-stage molybdenum concentrate flotation column 9. The concentrate from the first-stage molybdenum concentrate is regrinded in the first vertical mill 10. The finely ground concentrate is regrinded in the second-stage molybdenum concentrate flotation column 11. The concentrate from the second-stage molybdenum concentrate is regrinded in the third-stage molybdenum concentrate flotation column 12. The concentrate from the third-stage molybdenum concentrate is regrinded in the second vertical mill 13. The finely ground concentrate is regrinded in the fourth-stage molybdenum concentrate flotation column 14. The concentrate from the fourth-stage molybdenum concentrate is regrinded in the fifth-stage molybdenum concentrate flotation column 15. Finally, a molybdenum concentrate with a recovery rate of 87.5% and a molybdenum grade of 57% is obtained.

[0034] Step 3: The tailings from the secondary molybdenum concentrate are returned to the molybdenum rougher for classification and regrinding. The tailings from the tertiary to the quinary molybdenum concentrates are returned sequentially to the previous molybdenum concentrate operation for circulating flotation.

[0035] Step 4: The tailings from the primary molybdenum beneficiation process undergo four molybdenum scavenging processes: primary molybdenum scavenging machine 16, secondary molybdenum scavenging machine 17, tertiary molybdenum scavenging machine 18, and quaternary molybdenum scavenging machine 19. The concentrate froth from the primary molybdenum scavenging process is returned to the molybdenum roughing process for classification and regrinding. The concentrate froth from the secondary to quaternary molybdenum scavenging processes is sequentially returned to the previous stage of molybdenum scavenging process for cyclic flotation.

[0036] Step 5: The tailings from the fourth-stage molybdenum concentrate are concentrated by the No. 1 central drive thickener 20. After concentration, the overflow water enters the total tailings. The concentrated slurry enters the copper rougher 21 for copper roughing. The concentrate from the copper roughing enters the first copper cleaner 22 for the first copper cleaning. The concentrate from the first copper cleaning enters the second copper cleaner 23 for the second copper cleaning. Finally, a copper concentrate with a recovery rate of 65% and a copper grade of 20% is obtained.

[0037] Step 6: The tailings from the first copper concentrate enter the copper concentrate scavenger 26 for copper concentrate scavenging. The concentrate foam from the copper concentrate scavenging is combined with the tailings from the second copper concentrate and returned to the first copper concentrate 22 for recycling.

[0038] Step 7: The tailings from the copper roughing process are successively processed by the first copper roughing separator 24 and the second copper roughing separator 25 for the first and second copper roughing processes. The tailings from the copper finishing process and the concentrate froth from the first copper roughing process are combined and returned to the copper roughing operation for reprocessing. The concentrate froth from the second copper roughing process is returned to the previous operation for reprocessing.

[0039] Step 8: The tailings from the second copper roughing process enter the first sulfur roughing machine 27 for the first sulfur roughing process, and the frothy concentrate from the first sulfur roughing process enters the first sulfur cleaning machine 28 for the first sulfur cleaning process, to obtain sulfur concentrate 1 with a recovery rate of 64% and a sulfur grade of 47%. Step 9: The tailings from the first sulfur roughing process enter the first sulfur scavenger 29 for the first sulfur scavenging process. The frothy concentrate from the first sulfur scavenging process is combined with the tailings from the first sulfur cleaning process and returned to the sulfur roughing process for reprocessing. The tailings from the first sulfur scavenging process enter the total tailings.

[0040] Step 10: The tailings from the molybdenum roughing process enter the first molybdenum roughing separator 6 for the first molybdenum roughing process. The frothy concentrate from the first molybdenum roughing process is returned to the molybdenum roughing process. The tailings from the first molybdenum roughing process enter the second molybdenum roughing separator 7 and the third molybdenum roughing separator 8 for the second and third molybdenum roughing processes, respectively. The frothy concentrate from the second and third molybdenum roughing processes is combined and returned to the first molybdenum roughing process. The tailings from the second and third molybdenum roughing processes are then used for sulfur beneficiation.

[0041] Step 11: The tailings from the third molybdenum roughing process enter the second sulfur roughing machine 30 for second sulfur roughing. The frothy concentrate from the second sulfur roughing process can then enter the second sulfur cleaning machine 31 and the third sulfur cleaning machine 32 for second and third sulfur cleaning, respectively, ultimately yielding sulfur concentrate 2 with a recovery rate of 70% and a sulfur grade of 47%. Sulfur concentrate 1 and sulfur concentrate 2 are combined into total sulfur concentrate.

[0042] Step 12: The tailings from the second sulfur beneficiation are returned to the second sulfur roughing process, and the tailings from the third sulfur beneficiation are returned to the second sulfur beneficiation process.

[0043] Step 13: The tailings from the second sulfur roughing process enter the second sulfur scavenger 33 for second sulfur scavenging. The frothy concentrate from the second sulfur scavenging process is combined with the concentrate from the second sulfur cleaning process and returned to the second sulfur roughing process for recycling.

[0044] Step 14: The tailings from the second sulfur scavenging process enter the iron roughing separator 34 for iron roughing. The iron roughing concentrate is first removed by the impurity remover 35, and then enters the No. 2 center-driven thickener 36 for concentration. After concentration, the iron ore slurry enters the No. 3 ball mill 37.

[0045] Step 15: The iron ore after grinding in ball mill No. 37 enters classifier No. 38 for classification. The overflow product after classification is deslimed by desliming machine 39 and then subjected to two magnetic separations by first ferromagnetic separator 40 and second ferromagnetic separator 41.

[0046] Step 16: The iron product obtained after magnetic separation in step 15 is screened and graded by screening and grading machine 42. The screened and graded product enters the third iron magnetic separator 43 for magnetic column separation. After magnetic column separation, an iron concentrate with a recovery rate of 70.0% and a TFe grade of 63% is obtained.

[0047] Step 17: The sludge from the screening and classification and the tailings from the third ferromagnetic separation are combined and returned to the No. 3 classifier 38 for recycling. The coarse particles are regrinded and the fine particles are deslimed.

Claims

1. A four-product beneficiation system for molybdenum ore, characterized in that, The system includes a No. 1 ball mill (1), the outlet of the No. 1 ball mill (1) is connected to the inlet of the No. 1 classifier (2), the overflow outlet of the No. 1 classifier (2) is connected to the inlet of the molybdenum rough flotation column (3), the sediment outlet of the No. 1 classifier (2) is connected to the inlet of the No. 1 ball mill (1), the concentrate outlet of the molybdenum rough flotation column (3) is connected to the inlet of the No. 2 classifier (4), the tailings outlet of the molybdenum rough flotation column (3) is connected to the molybdenum coarse sweeping unit, the overflow outlet of the No. 2 classifier (4) is connected to the molybdenum copper beneficiation unit, the sediment outlet of the No. 2 classifier (4) is connected to the inlet of the No. 2 ball mill (5), and the outlet of the No. 2 ball mill (5) is connected to the inlet of the No. 2 classifier (4). The molybdenum coarse scavenging unit includes a first molybdenum coarse scavenging separator (6), a second molybdenum coarse scavenging separator (7), and a third molybdenum coarse scavenging separator (8). The tailings outlet of the molybdenum coarse flotation column (3) is connected to the feed inlet of the first molybdenum coarse scavenging separator (6). The tailings outlet of the first molybdenum coarse scavenging separator (6) is connected to the feed inlet of the second molybdenum coarse scavenging separator (7). The tailings outlet of the second molybdenum coarse scavenging separator (7) is connected to the feed inlet of the third molybdenum coarse scavenging separator (8). The tailings outlet of the third molybdenum coarse scavenging separator (8) is connected to a sulfur beneficiation unit. The concentrate outlet of the first molybdenum coarse scavenging separator (6) is connected to the feed inlet of the molybdenum coarse flotation column (3). The concentrate outlets of the second molybdenum coarse scavenging separator (7) and the third molybdenum coarse scavenging separator (8) are both connected to the feed inlet of the first molybdenum coarse scavenging separator (6).

2. The four-product beneficiation system for molybdenum ore as described in claim 1, characterized in that, The molybdenum-copper refining unit includes a molybdenum refining subunit and a copper refining subunit. The molybdenum refining subunit includes a primary molybdenum flotation column (9) whose feed inlet is connected to the overflow discharge outlet of the No. 2 classifier (4). The concentrate outlet of the primary molybdenum flotation column (9) is connected to the feed inlet of the first vertical mill (10). The discharge outlet of the first vertical mill (10) is connected to the feed inlet of the secondary molybdenum flotation column (11). The concentrate outlet of the secondary molybdenum flotation column (11) is connected to the feed inlet of the tertiary molybdenum flotation column (12). The tertiary molybdenum flotation column (12)... The concentrate outlet of the first vertical mill (12) is connected to the feed inlet of the second vertical mill (13). The discharge outlet of the second vertical mill (13) is connected to the feed inlet of the fourth-stage molybdenum concentrate flotation column (14). The concentrate outlet of the fourth-stage molybdenum concentrate flotation column (14) is connected to the feed inlet of the fifth-stage molybdenum concentrate flotation column (15). The discharge outlet of the fifth-stage molybdenum concentrate flotation column (15) is connected to the molybdenum concentrate collection unit. The tailings outlets of the third-stage molybdenum concentrate flotation column (12), the fourth-stage molybdenum concentrate flotation column (14) and the fifth-stage molybdenum concentrate flotation column (15) are respectively connected to the feed inlet of the previous stage molybdenum concentrate flotation column. The copper beneficiation subunit includes a primary molybdenum scavenger (16), a secondary molybdenum scavenger (17), a tertiary molybdenum scavenger (18), and a quaternary molybdenum scavenger (19). The feed inlet of the primary molybdenum scavenger (16) is connected to the tailings outlet of the primary molybdenum flotation column (9). The tailings outlets of the primary molybdenum scavenger (16), the secondary molybdenum scavenger (17), and the tertiary molybdenum scavenger (18) are respectively connected to the feed inlets of the next-level molybdenum scavenger. The tailings outlet of the secondary molybdenum flotation column (11) is connected to the feed outlet of the next-level molybdenum scavenger. The ore discharge port and the concentrate discharge port of the first-stage molybdenum scavenger (16) are both connected to the feed port of the second-stage classifier (4). The concentrate discharge ports of the second-stage molybdenum scavenger (17), the third-stage molybdenum scavenger (18), and the fourth-stage molybdenum scavenger (19) are respectively connected to the feed ports of the previous-stage molybdenum scavenger. The tailings discharge port of the fourth-stage molybdenum scavenger (19) is connected to the first-stage center-driven thickener (20). The slurry discharge port of the first-stage center-driven thickener (20) is connected to the copper rougher (21). The overflow outlet of the center-driven thickener (20) is connected to the main tailings collection unit. The concentrate outlet of the copper rougher (21) is connected to the feed inlet of the first copper cleaner (22). The concentrate outlet of the first copper cleaner (22) is connected to the feed inlet of the second copper cleaner (23). The concentrate outlet of the second copper cleaner (23) is connected to the copper concentrate collection unit. The tailings outlet of the copper rougher (21) is connected to the first copper coarse scavenger (24). The tailings outlet of the first copper coarse scavenger (24) is connected to the second copper coarse scavenger. (25) The tailings outlet of the first copper concentrator (22) is connected to the copper fine scavenger (26). The concentrate outlet of the copper fine scavenger (26) and the tailings outlet of the second copper concentrator (23) are connected to the feed inlet of the first copper concentrator (22). The tailings outlet of the copper fine scavenger (26) and the concentrate outlet of the first copper rough scavenger (24) are both connected to the feed inlet of the copper rough scavenger (21). The concentrate outlet of the second copper rough scavenger (25) is connected to the feed inlet of the first copper rough scavenger (24). The tailings outlet of the second copper coarse scavenger (25) is connected to the first sulfur coarse scavenger (27), the concentrate outlet of the first sulfur coarse scavenger (27) is connected to the first sulfur fine scavenger (28), the concentrate outlet of the first sulfur fine scavenger (28) is connected to the sulfur concentrate collection unit, the tailings outlet of the first sulfur coarse scavenger (27) is connected to the first sulfur scavenger (29), the tailings outlet of the first sulfur scavenger (29) is connected to the total tailings collection unit, and the tailings outlet of the first sulfur fine scavenger (28) and the concentrate outlet of the first sulfur scavenger (29) are connected to the feed inlet of the first sulfur coarse scavenger (27).

3. The four-product beneficiation system for molybdenum ore as described in claim 2, characterized in that, The sulfur beneficiation unit includes a sulfur beneficiation subunit and an iron beneficiation subunit. The sulfur beneficiation subunit includes a second sulfur rougher (30). The feed inlet of the second sulfur rougher (30) is connected to the tailings outlet of the third molybdenum rougher (8). The concentrate outlet of the second sulfur rougher (30) is connected to the feed inlet of the second sulfur beneficiation machine (31). The concentrate outlet of the second sulfur beneficiation machine (31) is connected to the feed inlet of the third sulfur beneficiation machine (32). The concentrate outlet of the third sulfur beneficiation machine (32) is connected to the tailings outlet of the third sulfur beneficiation machine (32). The tailings outlet of the second sulfur rougher (30) is connected to the feed inlet of the second sulfur scavenger (33), the tailings outlet of the second sulfur cleaner (31) and the concentrate outlet of the second sulfur scavenger (33) are both connected to the feed inlet of the second sulfur rougher (30), the tailings outlet of the third sulfur cleaner (32) is connected to the feed inlet of the second sulfur cleaner (31), and the tailings outlet of the second sulfur scavenger (33) is connected to the iron cleaning subunit.

4. The four-product beneficiation system for molybdenum ore as described in claim 3, characterized in that, The iron beneficiation subunit includes an iron roughing separator (34) connected to the tailings outlet of the second sulfur scavenger (33). The concentrate outlet of the iron roughing separator (34) is connected to the feed inlet of the blasting machine (35). The concentrate outlet of the blasting machine (35) is connected to the feed inlet of the second center-driven thickener (36). The slurry discharge outlet of the second center-driven thickener (36) is connected to the feed inlet of the third ball mill (37). The discharge outlet of the third ball mill (37) is connected to the feed inlet of the third classifier (38). The sediment discharge outlet of the third classifier (38) is connected to the discharge outlet of the third ball mill (37). The overflow discharge outlet of the third classifier (38) is connected to the feed inlet of the desliming machine (39). The concentrate outlet of the desliming machine (39) is connected to the feed inlet of the first ferromagnetic separator (40). The concentrate outlet of the first ferromagnetic separator (40) is connected to the feed inlet of the second ferromagnetic separator (41). The concentrate outlet of the second ferromagnetic separator (41) is connected to the feed inlet of the screening and classifying machine (42). The overflow discharge outlet of the screening and classifying machine (42) is connected to the feed inlet of the third ferromagnetic separator (43). The concentrate outlet of the third ferromagnetic separator (43) is connected to the iron concentrate collection unit. The sediment discharge outlet of the screening and classifying machine (42) and the tailings outlet of the third ferromagnetic separator (43) are connected to the feed inlet of the third classifier (38). The iron roughing machine (34), the impurity throwing machine (35), the desliming machine (39), the tailings outlets of the first ferromagnetic separator (40) and the second ferromagnetic separator (41), and the overflow discharge outlet of the second center-driven thickener (36) are all connected to the total tailings collection unit.

5. The four-product beneficiation system for molybdenum ore as described in claim 1, characterized in that, The No. 1 ball mill (1) is a 55*85 overflow ball mill, the No. 2 ball mill (5) is a 27*36 overflow ball mill, the No. 1 classifier (2) consists of 8 φ710 hydrocyclones, and the No. 2 classifier (4) consists of 4 φ250 hydrocyclones.

6. The four-product beneficiation system for molybdenum ore as described in claim 2, characterized in that, The molybdenum roughing flotation column (3) includes two flotation columns with a diameter of 5*10m. The first-stage molybdenum concentrate flotation column (9) is a flotation column with a diameter of 2.4*12m. The second-stage molybdenum concentrate flotation column (11) is a flotation column with a diameter of 2.0*12m. The third-stage molybdenum concentrate flotation column (12) is a flotation column with a diameter of 1.8*12m. The fourth-stage molybdenum concentrate flotation column (14) is a flotation column with a diameter of 2.0*12m. The fifth-stage molybdenum concentrate flotation column (15) is a flotation column with a diameter of 1.0*12m.

7. The four-product beneficiation system for molybdenum ore as described in claim 2, characterized in that, The first vertical mill (10) and the second vertical mill (13) are JM-1200 vertical mills.

8. The four-product beneficiation system for molybdenum ore as described in claim 4, characterized in that, The first molybdenum coarse scavenger (6), the second molybdenum coarse scavenger (7), the third molybdenum coarse scavenger (8), the first sulfur coarse scavenger (27), the second sulfur coarse scavenger (30), the first sulfur scavenger (29), and the second sulfur scavenger (33) all adopt the KCF / KYF-100 flotation machine; The first sulfur separator (28), the second sulfur separator (31), and the third sulfur separator (32) all use KCF / KYF-8 flotation machines.

9. The four-product beneficiation system for molybdenum ore as described in claim 4, characterized in that, The copper roughing separator (21) and the first copper roughing scavenger (24) both use φ3*8m flotation columns, the first copper cleaning separator (22) and the second copper cleaning separator (23) both use φ1.8*10m flotation columns, the second copper roughing scavenger (25) uses φ2.5*8m flotation columns, and the copper cleaning scavenger (26) uses φ1.5*10m flotation columns.

10. The four-product beneficiation system for molybdenum ore as described in claim 4, characterized in that, The iron coarsening separator (34) is a YLH-1500-12 magnetic separator, the impurity remover (35) is a CTB-1024 magnetic separator, the No. 3 ball mill (37) is an MQY-K9240 ball mill, the No. 3 classifier consists of 6 φ250 hydrocyclones, the desliming machine (39) is a CXZ-1400 magnetic desliming trough, the first ferromagnetic separator (40) and the second ferromagnetic separator (41) are both CTB-1024 magnetic separators, the screening and grading machine (42) is a D4FG1216 high-frequency vibrating screen, and the third ferromagnetic separator (43) is a CXZ-1000 magnetic column.

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