Separation system and separation method for associated fluorite in polymetallic ore

Abstract

The application discloses a sorting system and method for associated fluorite in polymetallic ore, which comprises a feeding and cleaning system, a crusher, a gravity separator, an electric separator, a first ball mill, a plurality of second ball mills, a plurality of cyclones, a plurality of flotation machines, a detection system, a dewatering machine, a sewage treatment system and a bacterial beneficiation tank. The application uses a plurality of beneficiation technologies to improve the extraction rate of fluorite, and the wastewater generated in the treatment process is recycled and treated again, and the regenerated water resource is put into the treatment process again, thereby improving the utilization rate of water resource.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ore dressing system and method, in particular to a sorting system and method for associated fluorite in polymetallic ore. BACKGROUND

[0002] When extracting metal from ore, fluorite is also contained in the ore. In order to improve the utilization rate of resources, fluorite can be simultaneously subjected to ore dressing treatment during the extraction process. Due to the complexity of the substances contained in the ore, it is necessary to separate and sort the materials during the extraction process, and the corresponding substances are subjected to corresponding process treatment. Therefore, a sorting system and method for associated fluorite in polymetallic ore is designed. For the extraction of associated fluorite in polymetallic ore, a plurality of ore dressing technologies are used in cooperation to improve the extraction rate of mineral fluorite. The wastewater generated during the treatment process is recycled and treated again. The regenerated water resource is again put into the treatment process to improve the utilization rate of water resources. SUMMARY

[0003] Based on the technical problems existing in the background art, the present application provides a sorting system and method for associated fluorite in polymetallic ore.

[0004] The sorting system for associated fluorite in polymetallic ore provided by the present application comprises a feeding and cleaning system, a crusher, a gravity separator, an electric separator, a primary ball mill, a plurality of secondary ball mills, a plurality of cyclones, a plurality of flotation machines, a detection system, a dewatering machine, a sewage treatment system, and a bacterial ore dressing tank.

[0005] Preferably, the feeding and cleaning system comprises a conveyor belt, a cleaning pool, and a plurality of spray frames to clean the surface of the mineral raw stone.

[0006] Preferably, the crusher is used for preliminary crushing of the ore. The crushed material is then fed into the primary ball mill for preliminary grinding. The obtained ore sand is fed into the gravity separator for gravity separation, thereby obtaining polymetallic ore sand and fluorite ore sand.

[0007] Preferably, a plurality of secondary ball mills are used for secondary grinding of the polymetallic ore sand and the fluorite ore sand, respectively. The ore slurry obtained by secondary grinding is fed into a plurality of cyclones for filtration, thereby obtaining high-mesh pre-treatment slurry and ore sand. The ore sand is again fed into the secondary ball mill for grinding.

[0008] Preferably, the electric separator is used for electrolytic extraction of the polymetallic ore slurry obtained by secondary grinding, thereby obtaining a metal product. An electrolytic agent is fed into the electrolytic separator before electrolysis to change the electrochemical properties of the electrolyte and improve the electrolysis efficiency.

[0009] Preferably, the detection system comprises a plurality of particle detectors and a pH detector, the plurality of particle detectors are respectively used for detecting the multi-metal ore slurry and the fluorite ore slurry after secondary grinding, detecting the particle count and the pH in the pretreated ore slurry, and adjusting the pH of the pretreated ore slurry according to the pH data, the particle detector comprises a tank body, a pressure controller and a sampling pipe are mounted on the side wall of the tank body for controlling the flow of gas, a gas pump is mounted in the pressure controller, a gas guide pipe group is mounted between the gas pump and the tank body, four electric control valves for controlling the switching of gas input or output are mounted on the surface of the gas guide pipe group, a cover plate is mounted on the top of the tank body, an electric cylinder, a gas pressure gauge, a liquid level meter and a water inlet interface are mounted on the surface of the cover plate, a detection probe is mounted at the bottom end of the electric cylinder, a cleaning ring pipe is mounted on the lower surface of the cover plate and connected to the water inlet interface through a pipeline, a plurality of water outlet holes are formed on the surface of the cleaning ring, a stirring wheel is mounted on the inner bottom of the tank body, a plurality of branch sewage pipes are mounted on the bottom of the tank body and a main sewage pipe is mounted at the bottom of the plurality of branch sewage pipes, and control valves are mounted on the surfaces of the branch sewage pipes and the sampling pipe.

[0010] Preferably, a plurality of the flotation machines are used for flotation treatment of the fluorite ore slurry after pretreatment to obtain target slurry, and at least one flotation machine is left for tailings flotation treatment to improve the extraction rate of fluorite.

[0011] Preferably, the dewatering machine is used for dewatering and drying treatment of the target slurry to obtain fluorite products and sewage, and the sewage treatment system is additionally provided for recycling treatment of the sewage, and the regenerated water resource obtained is used for flotation treatment again.

[0012] Preferably, the bacterial beneficiation tank is used for centralized collection and treatment of tailings generated after the electrostatic separator and the flotation machine.

[0013] Preferably, the separation method of the associated fluorite separation system in the multi-metal ore is as follows:

[0014] S1 ore cleaning: the ore surface is cleaned by using a feeding and cleaning system.

[0015] S2 separation treatment: the large ore is preliminarily crushed by using a crusher, then the ore is finely ground by using a first-stage ball mill, the obtained ore sand is put into a gravity separator for gravity separation treatment, then multi-metal ore sand and fluorite ore sand are obtained, the multi-metal ore sand and the fluorite ore sand are respectively put into a second-stage ball mill for secondary grinding, multi-metal ore slurry and fluorite ore slurry are obtained, the particle count in the ore slurry is detected by using a particle detector of a detection system, and the qualified fluorite ore slurry is subjected to pH detection by using a pH detector and pH adjustment according to the pH value.

[0016] S3 area division processing:

[0017] For multi-metal ore pulp, metal extraction is carried out by using an electric separator, and the obtained product is a metal element, tailings, and electrolytic waste liquid.

[0018] For fluorite ore pulp, flotation treatment is carried out by using a flotation machine, and for the target slurry obtained by flotation, dehydration and drying treatment is carried out by using a dehydration machine, and the obtained product is fluorite powder, tailings, and sewage.

[0019] S4: The electrolytic waste liquid and sewage are treated by using a sewage treatment system, and the regenerated water can be used in the electrolysis and flotation treatment process again.

[0020] S5: The tailings left after electrolysis and flotation are treated by using a bacterial beneficiation tank, and the remaining metals in the tailings are extracted by using microbial beneficiation technology, thereby improving the extraction rate of metal resources.

[0021] S6: The tailings treated by bacteria have reduced metal content and increased relative fluorite proportion, and the tailings can be subjected to flotation treatment again by using a flotation machine to extract the remaining fluorite in the tailings, thereby improving the extraction rate of fluorite.

[0022] Compared with the prior art, the beneficial technical effects of the present application are:

[0023] 1. The gravity separation technology, electric separation technology, flotation technology and microbial beneficiation technology are used in combination to separate and treat multi-metal associated ores, which greatly improves the extraction rate of fluorite, and the treatment difficulty of different treatment systems is reduced and the treatment efficiency is improved.

[0024] 2. The sewage and electrolytic waste water generated in the beneficiation process are recycled and treated by using a sewage treatment system, and the regenerated water resources are used in the beneficiation process again, thereby improving the utilization rate of water resources.

[0025] 3. Before electrolysis and flotation, surface cleaning treatment, preliminary crushing treatment, primary grinding treatment and secondary grinding treatment are carried out, and a detection system is provided to detect the prepared pretreated slurry, so that the slurry with appropriate mesh number is obtained, and the slurry can be more efficiently subjected to target mineral precipitation during subsequent electrolysis and flotation treatment, thereby improving the beneficiation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The flowchart of the beneficiation system for associated fluorite in multi-metal ore proposed in the present application.

[0027] Figure 2 The particle detector of the beneficiation system for associated fluorite in multi-metal ore proposed in the present application.

[0028] Figure 3 The particle detector of the sorting system for associated fluorite in polymetallic ore according to the present application.

[0029] Figure 4 The pressure controller of the sorting system for associated fluorite in polymetallic ore according to the present application.

[0030] In the figure: 1, particle detector; 101, tank body; 102, pressure controller; 103, sampling pipe; 104, air pump; 105, air guide pipe group; 106, electric control valve; 107, cover plate; 108, electric cylinder; 109, air pressure gauge; 110, liquid level meter; 111, water inlet interface; 112, detection probe; 113, cleaning ring pipe; 114, stirring wheel; 115, branch sewage pipe; 116, main sewage pipe. DETAILED DESCRIPTION

[0031] The sorting system for associated fluorite in polymetallic ore includes a feeding and cleaning system, a crusher, a gravity separator, an electric separator, a primary ball mill, multiple secondary ball mills, multiple cyclones, multiple groups of flotation machines, a detection system, a dewatering machine, a sewage treatment system, and a bacterial ore dressing tank.

[0032] The feeding and cleaning system includes a conveyor belt, a cleaning pool, and multiple groups of spraying frames, which realize the cleaning of the surface of the mineral raw stone.

[0033] The crusher is used for the preliminary crushing of the ore, and the crushed material is then fed into the primary ball mill for preliminary grinding, and the obtained ore sand is fed into the gravity separator for gravity separation, thereby obtaining polymetallic ore sand and fluorite ore sand.

[0034] The multiple secondary ball mills are respectively used for the secondary grinding of the polymetallic ore sand and the fluorite ore sand, and the obtained ore slurry is respectively fed into the multiple cyclones for filtration, thereby obtaining high-mesh pre-treatment slurry and ore sand, which is then fed into the secondary ball mill for grinding.

[0035] The electric separator is used for the electrolytic extraction of the polymetallic ore slurry obtained by the secondary grinding, thereby obtaining a metal product, and an electrolytic agent is fed into the electrolytic extraction before electrolysis to change the electrochemical performance of the electrolyte and improve the electrolysis efficiency.

[0036] The detection system comprises a plurality of particle detectors 1 and a pH detector, the plurality of particle detectors 1 are respectively used for detecting the multi-metal ore slurry and the fluorite ore slurry after secondary grinding, detecting the particle count and the pH in the pretreated ore slurry, and adjusting the pH of the pretreated ore slurry according to the pH data, the particle detector 1 comprises a tank body 101, a pressure controller 102 and a sampling pipe 103 are mounted on the side wall of the tank body 101 and are used for controlling the gas circulation, a gas pump 104 is mounted in the pressure controller 102, a gas guide pipe group 105 is mounted between the gas pump 104 and the tank body 101, four electric control valves 106 for controlling the switching of gas input or output are mounted on the surface of the gas guide pipe group 105, a cover plate 107 is mounted on the top of the tank body 101, an electric cylinder 108, a gas pressure gauge 109, a liquid level meter 110 and a water inlet interface 111 are mounted on the surface of the cover plate 107 in a penetrating mode, a detection probe 112 is mounted at the bottom end of the electric cylinder 108, a cleaning ring pipe 113 is mounted on the lower surface of the cover plate 107 and is connected with the water inlet interface 111 through a pipeline, a plurality of water outlet holes are formed in the surface of the cleaning ring, a stirring wheel 114 is mounted on the inner bottom of the tank body 101, a branch sewage pipe 115 is mounted on the bottom of the tank body 101 and a main sewage pipe 116 is jointly mounted at the bottom of a plurality of branch sewage pipes 115, control valves are mounted on the surfaces of the branch sewage pipes 115 and the sampling pipe 103, the four electric control valves 106 are respectively numbered as 11, 12, 13 and 14, when the particle detector 1 is used, 11 and 14 are closed, 12 and 13 are opened, negative pressure gas suction is carried out on the inside of the tank body 101, the sampling pipe 103 carries out sample drawing, on the contrary, 12 and 13 are closed, 11 and 14 are opened, the inside of the tank body 101 is inflated, the gas backwashing of the sampling pipe 103 is realized, the gas pump 104 realizes the functions of gas suction and inflation through the setting of the gas guide pipe group 105 and the configuration of the four electric control valves 106, the detection probe 112 is arranged in the tank body 101 to detect the sample, the influence of the external environment on the detection process is reduced, the detection data is more accurate, after the detection is completed, the waste is discharged through the branch sewage pipe 115 into the main sewage pipe 116, and the cleaning ring pipe 113 is provided to clean the detection probe 112 and the tank body 101, two control valves need to be controlled to cooperate with each other during the sewage and cleaning processes.

[0037] A plurality of flotation machines are used for flotation treatment of the fluorite ore slurry after pretreatment, target slurry is obtained, at least one flotation machine is left for tailing flotation treatment, the extraction rate of fluorite is improved, when the flotation treatment is carried out, water glass is used as the depressor and fatty acid is used as the collector.

[0038] The dewatering machine performs dewatering and drying treatment on the target slurry to obtain a fluorite product and sewage. Since the target slurry obtained through flotation has a large water content, a large amount of sewage is generated after dewatering. In order to improve the resource recycling efficiency, a sewage treatment system is additionally provided to recycle and treat the sewage, and the regenerated water resource is used for flotation treatment again.

[0039] The bacterial beneficiation tank is used for collecting and treating tailings generated after treatment by the electric separator and the flotation machine. In the gravity separation machine treatment stage, it is impossible to distinguish between polymetallic ore sand and fluorite ore sand in 100%, and part of the ore sand is mixed into different treatment systems. After the electric separator completes the electrolytic beneficiation, the tailings still contain part of the metal, but the content is small. However, it is also a useful resource. The bacterial beneficiation tank can be used for microbial beneficiation to extract the remaining metal in the tailings. After microbial beneficiation, the metal content of the remaining tailings is reduced, and the proportion of fluorite is relatively increased. The tailings can be finally subjected to a flotation treatment.

[0040] The separation method of the associated fluorite separation system in polymetallic ore is as follows:

[0041] S1 ore cleaning: the ore surface is cleaned by using a feeding and cleaning system.

[0042] S2 separation treatment: the large ore is preliminarily crushed by using a crusher, and then finely ground by using a first-stage ball mill. The obtained ore sand is subjected to gravity separation treatment in a gravity separation machine, and then the polymetallic ore sand and the fluorite ore sand are respectively subjected to secondary fine grinding in a second-stage ball mill to obtain a polymetallic ore slurry and a fluorite ore slurry. The particle number in the ore slurry is detected by using a particle detector of a detection system. After the detection meets the standard, it is subjected to the next step treatment. If the detection does not meet the standard, it is subjected to secondary fine grinding treatment again. The qualified fluorite ore slurry is subjected to pH detection by using a pH detector, and the pH is adjusted according to the pH value.

[0043] S3 separation treatment:

[0044] For the polymetallic ore slurry, the metal is extracted by using an electric separator, and the obtained product is a metal element, tailings and electrolytic waste liquid.

[0045] For the fluorite ore slurry, the flotation treatment is performed by using a flotation machine. The target slurry obtained through flotation is subjected to dewatering and drying treatment by using a dewatering machine, and the obtained product is fluorite powder, tailings and sewage.

[0046] S4: The electrolytic waste liquid and the sewage are treated by using a sewage treatment system, and the regenerated water can be used in the electrolysis and flotation treatment process again.

[0047] S5: the tailings left with electrolysis and flotation are treated by using a bacterial beneficiation tank, and the remaining metals in the tailings are extracted by using a microbial beneficiation technology, so that the extraction rate of metal resources is improved.

[0048] S6: the tailings treated by the bacteria have reduced metal content and increased relative fluorite proportion, and the tailings can be subjected to flotation treatment again by using a flotation machine, so that the remaining fluorite in the tailings is extracted, and the extraction rate of fluorite is improved.

[0049] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for separating associated fluorite in polymetallic ores, characterized in that, The sorting system used includes a feeding and washing system, a crusher, a gravity separator, an electrostatic separator, a primary ball mill, multiple secondary ball mills, multiple hydrocyclones, multiple sets of flotation machines, a detection system, a dewatering machine, a wastewater treatment system, and a bacterial beneficiation tank. The sorting method steps are as follows: S1 Ore Cleaning: The surface of the ore is cleaned using a feeding and cleaning system; S2 sorting process: Large ore materials are initially crushed using a crusher, and then finely ground using a primary ball mill. The resulting ore sand is fed into a gravity separator for gravity separation to obtain polymetallic ore sand and fluorite ore sand. The polymetallic ore sand and fluorite ore sand are then fed into a secondary ball mill for secondary fine grinding to obtain polymetallic slurry and fluorite slurry. The particle size of the slurry is detected using a particle size analyzer. If the particle size meets the standard, it proceeds to the next step. If it does not meet the standard, it undergoes secondary fine grinding again. For qualified fluorite slurry, the pH is measured using a pH analyzer, and the pH is adjusted according to the pH value. S3 Differentiation Processing: For polymetallic slurry, metals are extracted using an electric separator, and the resulting products are elemental metals, tailings, and electrolytic waste liquid. For fluorite slurry, flotation is performed using a flotation machine. The target slurry obtained from flotation is then dewatered and dried using a dewatering machine. The resulting products are fluorite powder, tailings, and wastewater. S4: The wastewater treatment system is used to treat the electrolytic wastewater and sewage, and the resulting reclaimed water is then fed back into the electrolysis and flotation process. S5: The tailings remaining after electrolysis and flotation are treated using bacterial beneficiation tanks. Microbial beneficiation technology is used to extract the remaining metals from the tailings, thereby improving the extraction rate of metal resources. S6: Tailings treated with bacteria have reduced metal content and increased relative fluorite proportion. The tailings are then subjected to flotation again using a flotation machine to extract the remaining fluorite and improve the fluorite extraction rate.

2. The method for separating associated fluorite in polymetallic ores according to claim 1, characterized in that, The feeding and cleaning system includes a conveyor belt, a cleaning tank, and multiple spray racks to clean the surface of the raw mineral stone.

3. The method for separating associated fluorite in polymetallic ores according to claim 1, characterized in that, The crusher is used for the initial crushing of the ore, and then the crushed material is fed into a primary ball mill for preliminary fine grinding. The resulting ore sand is fed into the gravity separator for gravity separation, thereby obtaining polymetallic ore sand and fluorite ore sand.

4. The method for separating associated fluorite in polymetallic ores according to claim 1, characterized in that, Multiple secondary ball mills are used for secondary fine grinding of polymetallic ore sand and fluorite ore sand, respectively. The slurry obtained from the secondary fine grinding is passed into multiple hydrocyclones for filtration to obtain high-mesh pretreated slurry and ore sand. The ore sand is then fed back into the secondary ball mill for fine grinding.

5. The method for separating associated fluorite in polymetallic ores according to claim 1, characterized in that, The electrostatic separator is used to electrolytically extract the polymetallic slurry obtained from secondary fine grinding to obtain metal products. Before electrolysis, an electrolyte is added to change the electrochemical properties of the electrolyte and improve the electrolysis efficiency.

6. The method for separating associated fluorite in polymetallic ores according to claim 1, characterized in that, The detection system includes multiple particulate matter detectors and pH meters. The particulate matter detectors are used to detect the particle size and pH of the pretreated slurry after secondary refining of polymetallic ore and fluorite ore, respectively. Based on the pH data, the pH of the pretreated slurry is adjusted. Each particulate matter detector includes a tank. A pressure controller and sampling tube are installed on the side wall of the tank to control gas flow. An air pump is installed inside the pressure controller. A gas guide pipe assembly is installed between the air pump and the tank. Four control valves are installed on the surface of the gas guide pipe assembly to switch gas delivery. The tank has an inlet or outlet electrically controlled valve. A cover plate is installed on the top of the tank. An electric cylinder, a pressure gauge, a level gauge, and a water inlet are installed through the surface of the cover plate. A detection probe is installed at the bottom of the electric cylinder. A cleaning ring pipe is installed on the lower surface of the cover plate and is connected to the water inlet via a pipe. Multiple sets of water outlet holes are opened on the surface of the cleaning ring. An agitator is installed at the bottom of the tank. A branch drain pipe is installed at the bottom of the tank, and the bottoms of multiple branch drain pipes are connected to a main drain pipe. Control valves are installed on the surface of the branch drain pipes and the sampling pipe.

7. The method for separating associated fluorite in polymetallic ores according to claim 1, characterized in that, Multiple sets of flotation machines are used to perform flotation treatment on the pretreated fluorite slurry to obtain the target slurry, and at least one flotation machine is reserved for tailings flotation treatment to improve the extraction rate of fluorite.

8. The method for separating associated fluorite in polymetallic ores according to claim 1, characterized in that, The dewatering machine dehydrates and dries the target slurry to obtain fluorite products and wastewater. The wastewater is then recycled using the wastewater treatment system, and the resulting reclaimed water will be used again for flotation.

9. The method for separating associated fluorite in polymetallic ores according to claim 1, characterized in that, The bacterial beneficiation tank is used to centrally collect and process tailings generated after electrostatic separation and flotation.

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