Beneficiation process and device for efficiently recovering associated gold and silver in lead-zinc ore body

Abstract

The invention provides a beneficiation process and device for efficiently recovering associated gold and silver in lead-zinc ore bodies, and the beneficiation process comprises the following steps: S1, carrying out coarse crushing and intermediate crushing on lead-zinc ore containing associated gold and silver, and then finely crushing the ore to 2mm by adopting efficient fine crushing equipment to obtain a fine crushed ore sample to be treated; and S2, transferring the finely-crushed ore sample generated in the step S1 into an energy-saving rod mill, and carrying out ore grinding and grading treatment. According to the beneficiation process and device for efficiently recycling associated gold and silver in the lead-zinc ore body, by optimizing the fine ore particle size and the ore grinding and grading equipment, the flotation effect is guaranteed, meanwhile, energy consumption and equipment loss are reduced, more ores can be effectively treated, and the beneficiation efficiency is improved. The resource utilization rate of the lead-zinc sulfide ore and associated gold and silver is improved; by continuously monitoring the trend and the recovery rate of the associated gold and silver, problems can be found in time, and process parameters can be adjusted, so that an operator can optimize flotation operation in a targeted manner, and the recovery rate of the associated gold and silver is improved to the maximum extent.

Description

Technical Field

[0001] The invention relates to the technical field of lead-zinc ore dressing technology, and in particular to a dressing technology and device for efficiently recovering associated gold and silver in a lead-zinc ore body. Background Art

[0002] Lead and zinc are important non-renewable strategic resources. Lead, zinc and sulfur often coexist together. Lime is currently an effective inhibitor of sulfur. Usually, in the lead and zinc beneficiation process, a high-alkali process of lime is used to inhibit sulfur and reduce the sulfur content in lead concentrate and zinc concentrate. Since sulfur has good floatability, most of the mature beneficiation processes now use strong alkali processes such as lime or sodium hydroxide to inhibit sulfur and float lead or zinc. It is usually necessary to adjust the slurry to a high alkalinity of pH around 12 to inhibit pyrite. The inhibition effect of pyrite is good in a high-alkali environment, but it will also cause a decrease in the recovery rate of lead, zinc and the associated gold and silver.

[0003] For example, in the prior art, a flotation method for improving the recovery rate of associated gold and silver in sulfide lead-zinc ores adopts a process of fine grinding of flash flotation tailings. This tailings regrinding is difficult to implement in production and has high energy consumption. On the one hand, tailings regrinding requires an additional grinding process, which will bring additional energy consumption, and at the same time, additional equipment and process links need to be added, which increases the complexity and maintenance cost of the production line; on the other hand, the specific trend and recovery rate of the associated gold and silver in each step are not monitored and analyzed, and it is difficult to optimize the process in a targeted manner to improve the recovery rate of gold and silver.

[0004] Therefore, it is necessary to provide a mineral processing technology and device for efficiently recovering associated gold and silver in lead-zinc ore bodies to solve the above technical problems. Summary of the invention

[0005] The invention provides a mineral processing process and a device for efficiently recovering associated gold and silver in a lead-zinc ore body, which solves the problems of complicated steps, multiple grinding and classification treatments, increased energy consumption and equipment loss, lack of monitoring and analysis, and difficulty in targeted optimization of the process to improve the recovery rate of gold and silver.

[0006] In order to solve the above technical problems, the present invention provides a mineral processing process for efficiently recovering associated gold and silver in a lead-zinc ore body, comprising the following steps:

[0007] S1. After coarse and medium crushing of lead-zinc ore containing associated gold and silver, high-efficiency fine crushing equipment is used to crush the ore to 2 mm to obtain a finely crushed ore sample to be processed;

[0008] S2. The finely crushed ore sample produced in step S1 is transferred to an energy-saving rod mill for grinding and classification to obtain a pulp product. In a stirring barrel, a specific sphalerite inhibitor and an appropriate amount of flotation collector are accurately added according to the properties of the ore. After sufficient slurry mixing and stirring, the slurry is transported to an advanced flash flotation equipment for a flash rapid flotation to obtain a lead concentrate and tailings. At the same time, the pulp in this step is monitored in real time to analyze the changes in the content of associated gold and silver.

[0009] S3, the tailings produced in step S2 are transported to a high-efficiency ball mill for grinding and classification, and the obtained pulp product is transported to a flotation machine. According to the monitoring results of the previous step, the dosage of sphalerite inhibitor and flotation collector is optimized and adjusted, and then added to perform lead flotation roughing operation to obtain lead rough concentrate and lead rough tailings.

[0010] S4, adding a targeted flotation collector to the crude lead tailings obtained in step S3, after one efficient lead scavenging operation, the scavenged tailings are lead tailings, which are used for the next step of processing, and the scavenged tailings are returned to the previous level of flotation operation in sequence.

[0011] S5. Add the optimized sphalerite inhibitor to the lead rough concentrate obtained in step S3, obtain lead concentrate after two lead concentrate concentration operations, return the concentrated middlings to the previous flotation operation in sequence, and combine the lead concentrate with the lead concentrate produced in step S2 to obtain a total lead concentrate. During the entire flotation process, continuously monitor the trend and recovery rate of associated gold and silver so as to adjust the process parameters in time and improve the recovery rate of gold and silver.

[0012] Preferably, the sphalerite inhibitor is a combination of any one or two of sodium sulfite, sodium thiosulfate, and sodium bicarbonate and zinc sulfate.

[0013] In order to solve the above technical problems, the present invention also provides a ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body, comprising:

[0014] Crushing equipment body;

[0015] A dust collecting frame, the dust collecting frame is fixedly mounted on the front of the crushing equipment body, an air pipe is fixedly mounted on the side of the dust collecting frame, and an air pump is fixedly mounted on one end of the air pipe;

[0016] A shell, the shell is fixedly mounted on the output end of the air pump, a feed chute is fixedly mounted on both ends of the bottom of the shell, a partition is fixedly mounted on the inner side of the shell, a filter plate is fixedly mounted on the inner side of the partition, through grooves are opened inside the two ends of the partition, an air collecting hood is fixedly mounted on the bottom of the partition, a baffle is fixedly mounted inside the air collecting hood, and a one-way valve is fixedly mounted on the bottom of the air collecting hood;

[0017] A water tank, the water tank is fixedly mounted on the bottom of the shell, a water pump is fixedly mounted on the front of the water tank, a water pipe is fixedly mounted on the output end of the water pump, a water collecting frame is fixedly mounted on the output end of the water pipe, the water collecting frame is fixedly mounted inside the top of the shell, a plurality of high-pressure nozzles are fixedly mounted on the bottom of the water collecting frame, and an air pump is fixedly mounted on the side of the water tank;

[0018] A driving motor is fixedly mounted on one end of the shell, a reciprocating screw is fixedly mounted on the output end of the driving motor, a movable plate is threadedly connected to the outer side surface of the reciprocating screw, spring telescopic rods are fixedly mounted on both ends of the bottom of the movable plate, scrapers are fixedly mounted on the bottoms of the two spring telescopic rods, and the bottoms of the scrapers are attached to the top of the filter plate.

[0019] Preferably, mounting frames are fixedly mounted on both ends of the bottom of the shell, the mounting frames are arranged at the bottom of the material discharge chute, and a material guide frame is fixedly mounted on the bottom of the mounting frame.

[0020] Preferably, the through groove is arranged at the top of the feed chute, and the middle bottom of the partition is high at both ends.

[0021] Preferably, the bottom of the air collecting hood is arranged on the inner side of the water tank, and the air collecting hood is arranged on the bottom of the filter plate.

[0022] Preferably, the input end of the air extraction pump is arranged on the inner side of the air collecting hood and is located at the bottom of the baffle.

[0023] Preferably, a slider is fixedly mounted on the top of the moving bar, a sliding rod is slidably connected to the inner side of the slider, and both ends of the sliding rod are fixedly mounted on the inner side of the housing.

[0024] Preferably, mounting frames are fixedly mounted on both ends of the bottom of the shell, and the two mounting frames are fixedly mounted on the front side of the crushing equipment body.

[0025] Preferably, a blocking net is fixedly mounted on the inner side of the dust collecting frame.

[0026] Compared with the related art, the present invention provides a mineral processing process and device for efficiently recovering associated gold and silver in a lead-zinc ore body, which has the following beneficial effects:

[0027] The present invention provides a mineral processing technology and device for efficiently recovering associated gold and silver in a lead-zinc ore body, which reduces energy consumption and equipment loss while ensuring flotation effect by optimizing ore fine crushing particle size and grinding and classification equipment, so that more ores can be effectively processed, and improves the resource utilization rate of sulfide lead-zinc ore and associated gold and silver;

[0028] By continuously monitoring the direction and recovery rate of associated gold and silver, problems can be discovered and process parameters adjusted in a timely manner, which enables operators to optimize flotation operations in a targeted manner and maximize the recovery rate of associated gold and silver. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a first embodiment of a ore dressing process and device for efficiently recovering associated gold and silver in a lead-zinc ore body provided by the present invention;

[0030] Figure 2 for Figure 1 The fixed frame structure schematic diagram shown;

[0031] Figure 3 for Figure 2 The schematic diagram of the cross-sectional structure of the fixed frame shown;

[0032] Figure 4 for Figure 1 The schematic diagram of the back structure of the dust collecting frame shown;

[0033] Figure 5 for Figure 3 An enlarged schematic diagram of part A is shown;

[0034] Figure 6 The present invention provides a schematic structural diagram of a second embodiment of a mineral processing process and device for efficiently recovering associated gold and silver in a lead-zinc ore body.

[0035] Numbers in the figure: 1. Crushing equipment body, 2. Dust collecting frame, 21. Air pipe, 21. Air pump, 3. Shell, 31. Feed chute, 32. Mounting frame, 33. Guide frame, 34. Partition, 35. Through slot, 36. Filter plate, 37. Air collecting hood, 38. Mounting frame, 39. Baffle, 30. One-way valve, 4. Water tank, 41. Water pump, 42. Water pipe, 43. Water collecting frame, 44. High-pressure nozzle, 46. Vacuum pump, 5. Driving motor, 51. Reciprocating screw, 52. Sliding rod, 53. Moving bar, 54. Sliding block, 55. Spring telescopic rod, 56. Scraper, 6. Block net. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0037] A mineral processing process for efficiently recovering associated gold and silver in a lead-zinc ore body comprises the following steps:

[0038] S1. After coarse and medium crushing of lead-zinc ore containing associated gold and silver, high-efficiency fine crushing equipment is used to crush the ore to 2 mm to obtain a finely crushed ore sample to be processed;

[0039] S2. The finely crushed ore sample produced in step S1 is transferred to an energy-saving rod mill for grinding and classification to obtain a pulp product. In a stirring barrel, a specific sphalerite inhibitor and an appropriate amount of flotation collector are accurately added according to the properties of the ore. After sufficient slurry mixing and stirring, the slurry is transported to an advanced flash flotation equipment for a flash rapid flotation to obtain a lead concentrate and tailings. At the same time, the pulp in this step is monitored in real time to analyze the changes in the content of associated gold and silver.

[0040] S3, the tailings produced in step S2 are transported to a high-efficiency ball mill for grinding and classification, and the obtained pulp product is transported to a flotation machine. According to the monitoring results of the previous step, the dosage of sphalerite inhibitor and flotation collector is optimized and adjusted, and then added to perform lead flotation roughing operation to obtain lead rough concentrate and lead rough tailings.

[0041] S4, adding a targeted flotation collector to the crude lead tailings obtained in step S3, after one efficient lead scavenging operation, the scavenged tailings are lead tailings, which are used for the next step of processing, and the scavenged tailings are returned to the previous level of flotation operation in sequence.

[0042] S5. Add the optimized sphalerite inhibitor to the lead rough concentrate obtained in step S3, obtain lead concentrate after two lead concentrate concentration operations, return the concentrated middlings to the previous flotation operation in sequence, and combine the lead concentrate with the lead concentrate produced in step S2 to obtain a total lead concentrate. During the entire flotation process, continuously monitor the trend and recovery rate of associated gold and silver so as to adjust the process parameters in time and improve the recovery rate of gold and silver.

[0043] The sphalerite inhibitor is a combination of any one or two of sodium sulfite, sodium thiosulfate and sodium bicarbonate and zinc sulfate.

[0044] Compared with the related art, the ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body provided by the present invention has the following beneficial effects:

[0045] By optimizing the ore fine particle size and grinding and classification equipment, the energy consumption and equipment loss are reduced while ensuring the flotation effect, so that more ores can be effectively processed and the resource utilization rate of sulfide lead-zinc ore and associated gold and silver is improved;

[0046] By continuously monitoring the direction and recovery rate of associated gold and silver, problems can be discovered and process parameters adjusted in a timely manner, which enables operators to optimize flotation operations in a targeted manner and maximize the recovery rate of associated gold and silver.

[0047] First embodiment

[0048] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic structural diagram of a first embodiment of a ore dressing process and device for efficiently recovering associated gold and silver in a lead-zinc ore body provided by the present invention; Figure 2 for Figure 1 The fixed frame structure schematic diagram shown; Figure 3 for Figure 2 The schematic diagram of the cross-sectional structure of the fixed frame shown; Figure 4 for Figure 1 The schematic diagram of the back structure of the dust collecting frame shown; Figure 5 for Figure 3 The enlarged schematic diagram of part A is shown. A beneficiation device for efficiently recovering associated gold and silver in a lead-zinc ore body comprises: a crushing device body 1;

[0049] A dust collecting frame 2, wherein the dust collecting frame 2 is fixedly mounted on the front of the crushing device body 1, an air pipe 21 is fixedly mounted on the side of the dust collecting frame 2, and an air pump 22 is fixedly mounted on one end of the air pipe 21;

[0050] A housing 3, wherein the housing 3 is fixedly mounted on the output end of the air pump 22, a material discharge chute 31 is fixedly mounted on both ends of the bottom of the housing 3, a partition 34 is fixedly mounted on the inner side of the housing 3, a filter plate 36 is fixedly mounted on the inner side of the partition 34, through grooves 35 are provided inside both ends of the partition 34, an air collecting hood 37 is fixedly mounted on the bottom of the partition 34, a baffle 39 is fixedly mounted inside the air collecting hood 37, and a one-way valve is fixedly mounted on the bottom of the air collecting hood 37;

[0051] A water tank 4, the water tank 4 is fixedly mounted on the bottom of the housing 3, a water pump 41 is fixedly mounted on the front of the water tank 4, a water pipe 42 is fixedly mounted on the output end of the water pump 41, a water collecting frame 43 is fixedly mounted on the output end of the water pipe 42, the water collecting frame 43 is fixedly mounted inside the top of the housing 3, a plurality of high-pressure nozzles 44 are fixedly mounted on the bottom of the water collecting frame 43, and an air pump 46 is fixedly mounted on the side of the water tank 4;

[0052] A driving motor 5 is fixedly mounted on one end of the housing 3, a reciprocating screw 51 is fixedly mounted on the output end of the driving motor 5, a moving plate 53 is threadedly connected to the outer side surface of the reciprocating screw 51, spring telescopic rods 55 are fixedly mounted on both ends of the bottom of the moving plate 53, and scrapers 56 are fixedly mounted on the bottoms of the two spring telescopic rods 55, and the bottoms of the scrapers 56 are attached to the top of the filter plate 36.

[0053] By providing the spring telescopic rod 55 , when the scraper 56 moves, the bottom of the scraper 56 can always be in contact with the top of the filter plate 36 and the partition plate 34 .

[0054] Both ends of the bottom of the housing 3 are fixedly mounted with mounting frames 32 . The mounting frames 32 are arranged at the bottom of the material discharge chute 31 . A material guide frame 33 is fixedly mounted at the bottom of the mounting frame 32 .

[0055] By setting the mounting frame 32, when in use, the ash that falls can be smoothly guided to the inner side of the guide frame 33 and then discharged.

[0056] The through groove 35 is disposed at the top of the material discharge chute 31 , and the middle bottom of the partition plate 34 is high at both ends.

[0057] By setting the middle of the partition 34 to be lower and the two ends to be higher, and then installing the filter plate 36 at a lower position, the sewage can be collected on the top of the filter plate 36 for filtration.

[0058] The bottom of the air collecting hood 37 is arranged on the inner side of the water tank 4 , and the air collecting hood 37 is arranged on the bottom of the filter plate 36 .

[0059] The input end of the air pump 46 is disposed on the inner side of the air collecting cover 37 and is located at the bottom of the baffle 39 .

[0060] A baffle 39 is arranged at the top of the input end of the vacuum pump 46, so that liquid can be prevented from entering the inner side of the vacuum pump 46 when in use.

[0061] A slider 54 is fixedly mounted on the top of the moving bar 53 , and a slide bar 52 is slidably connected to the inner side surface of the slider 54 . Both ends of the slide bar 52 are fixedly mounted on the inner side surface of the housing 3 .

[0062] The slider 54 slides on the outer side of the slide rod 52 , so that when in use, the moving bar 53 can be limited to prevent the moving bar 53 from rotating.

[0063] Mounting frames 38 are fixedly mounted on both ends of the bottom of the housing 3 , and the two mounting frames 38 are fixedly mounted on the front side of the crushing equipment body 1 .

[0064] The working principle of the ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body provided by the present invention is as follows:

[0065] When in use, the air pump 21 draws the dust inside the crushing equipment body 1 into the inner side of the shell 3 through the dust collecting frame 2, the air pipe 21 and the air pump 22, and then starts the air pump 46 and the water pump, so that the air pump 46 adsorbs the gas and discharges it, so that the dust accumulates on the top of the filter plate 36, and at the same time, the water pump 41 draws out the liquid inside the water tank 4, and then transports it to the inner side of the water collecting frame 43 through the water pipe 41, and then sprays it out through the high-pressure nozzle 44, so as to spray the dust accumulated on the filter plate 36. Thereby, the ash is damp and agglomerated to prevent it from flying. At this time, the filtered liquid will flow back into the inner side of the water tank 4 through the one-way valve 30, and at the same time, the driving motor 5 is driven to drive the reciprocating screw 51 to be threadedly connected inside the moving bar 53, so that the moving bar 53 drives the spring telescopic rod 55 to drive the scraper 56 to move back and forth, thereby pushing the ash on the filter plate 36 to the inner side of the through groove 35, and then discharged into the inner side of the installation frame 32 through the discharge chute 31, and then discharged through the guide frame 33.

[0066] Compared with the related art, the ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body provided by the present invention has the following beneficial effects:

[0067] The dust generated inside the crushing equipment body 1 is transported to the inner side of the outer shell 3 through the air pump 21, and then filtered through the filter plate 36, and the dust is reduced by the spray water sprayed from the high-pressure nozzle 44, so that the ash is accumulated on the filter plate 36, and then the reciprocating screw 51 is driven by the driving motor 5 to be threadedly connected inside the moving bar 53, thereby driving the scraper 56 to move on the filter plate 36 and the partition plate 34, so that the collected ash is discharged, so as to avoid the pollution to the environment caused by the direct discharge of ash and the waste of mineral resources.

[0068] Second embodiment

[0069] Please refer to Figure 6 Based on the first embodiment of the present application, a beneficiation device for efficiently recovering associated gold and silver in a lead-zinc ore body is provided. The second embodiment of the present application proposes another beneficiation device for efficiently recovering associated gold and silver in a lead-zinc ore body. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0070] Specifically, the difference between the mineral processing process and device for efficiently recovering associated gold and silver in a lead-zinc ore body provided by the second embodiment of the present application is that, in a mineral processing device for efficiently recovering associated gold and silver in a lead-zinc ore body, a blocking net 6 is fixedly installed on the inner side of the dust collecting frame 2.

[0071] The working principle of the ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body provided by the present invention is as follows:

[0072] When in use, the blocking net 6 is installed on the inner side of the dust collecting frame 2. In this way, when in use, it can prevent larger ores inside the crushing equipment body 1 from entering the air pump 22 through the air pipe 21 and causing damage to the air pump 22.

[0073] Compared with the related art, the ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body provided by the present invention has the following beneficial effects:

[0074] The blocking net 6 is installed on the inner side of the dust collecting frame 2, so as to prevent the ore from passing through the dust collecting frame 2 and the air pipe 21 into the interior of the air pump 22 and causing damage to the air pump 22, thereby protecting the air pump 22.

[0075] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mineral processing process for efficiently recovering associated gold and silver in a lead-zinc ore body, characterized in that: The following steps are involved: S1. After coarse and medium crushing of lead-zinc ore containing associated gold and silver, high-efficiency fine crushing equipment is used to crush the ore to 2 mm to obtain a finely crushed ore sample to be processed; S2. The finely crushed ore sample produced in step S1 is transferred to an energy-saving rod mill for grinding and classification to obtain a pulp product. In a stirring barrel, a specific sphalerite inhibitor and an appropriate amount of flotation collector are accurately added according to the properties of the ore. After sufficient slurry mixing and stirring, the slurry is transported to an advanced flash flotation equipment for a flash rapid flotation to obtain a lead concentrate and tailings. At the same time, the pulp in this step is monitored in real time to analyze the changes in the content of associated gold and silver. S3, the tailings produced in step S2 are transported to a high-efficiency ball mill for grinding and classification, and the obtained pulp product is transported to a flotation machine. According to the monitoring results of the previous step, the dosage of sphalerite inhibitor and flotation collector is optimized and adjusted, and then added to perform lead flotation roughing operation to obtain lead rough concentrate and lead rough tailings. S4, adding a targeted flotation collector to the crude lead tailings obtained in step S3, after one efficient lead scavenging operation, the scavenged tailings are lead tailings, which are used for the next step of processing, and the scavenged tailings are returned to the previous level of flotation operation in sequence. S5. Add the optimized sphalerite inhibitor to the lead rough concentrate obtained in step S3, obtain lead concentrate after two lead concentrate concentration operations, return the concentrated middlings to the previous flotation operation in sequence, and combine the lead concentrate with the lead concentrate produced in step S2 to obtain a total lead concentrate. During the entire flotation process, continuously monitor the trend and recovery rate of associated gold and silver so as to adjust the process parameters in time and improve the recovery rate of gold and silver.

2. The ore dressing process for efficiently recovering associated gold and silver in a lead-zinc ore body according to claim 1, characterized in that: The sphalerite inhibitor is a combination of any one or two of sodium sulfite, sodium thiosulfate and sodium bicarbonate and zinc sulfate.

3. A ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body, used for crushing lead-zinc ore containing associated gold and silver, characterized in that: include: Crushing equipment body; A dust collecting frame, the dust collecting frame is fixedly mounted on the front of the crushing equipment body, an air pipe is fixedly mounted on the side of the dust collecting frame, and an air pump is fixedly mounted on one end of the air pipe; A shell, the shell is fixedly mounted on the output end of the air pump, a feed chute is fixedly mounted on both ends of the bottom of the shell, a partition is fixedly mounted on the inner side of the shell, a filter plate is fixedly mounted on the inner side of the partition, through grooves are opened inside the two ends of the partition, an air collecting hood is fixedly mounted on the bottom of the partition, a baffle is fixedly mounted inside the air collecting hood, and a one-way valve is fixedly mounted on the bottom of the air collecting hood; A water tank, the water tank is fixedly mounted on the bottom of the shell, a water pump is fixedly mounted on the front of the water tank, a water pipe is fixedly mounted on the output end of the water pump, a water collecting frame is fixedly mounted on the output end of the water pipe, the water collecting frame is fixedly mounted inside the top of the shell, a plurality of high-pressure nozzles are fixedly mounted on the bottom of the water collecting frame, and an air pump is fixedly mounted on the side of the water tank; A driving motor is fixedly mounted on one end of the shell, a reciprocating screw is fixedly mounted on the output end of the driving motor, a movable plate is threadedly connected to the outer side surface of the reciprocating screw, spring telescopic rods are fixedly mounted on both ends of the bottom of the movable plate, scrapers are fixedly mounted on the bottoms of the two spring telescopic rods, and the bottoms of the scrapers are attached to the top of the filter plate.

4. The ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body according to claim 3 is characterized in that: Both ends of the bottom of the shell are fixedly installed with installation frames, the installation frame is arranged at the bottom of the material discharge chute, and the bottom of the installation frame is fixedly installed with a material guide frame.

5. The ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body according to claim 4, characterized in that: The through groove is arranged on the top of the material discharge chute, and the middle bottom of the partition is high at both ends.

6. The ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body according to claim 5, characterized in that: The bottom of the air collecting hood is arranged on the inner side of the water tank, and the air collecting hood is arranged on the bottom of the filter plate.

7. The ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body according to claim 6 is characterized in that: The input end of the air extraction pump is arranged on the inner side of the air collecting hood and is located at the bottom of the baffle.

8. The ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body according to claim 7, characterized in that: A slider is fixedly installed on the top of the moving bar, a sliding rod is slidably connected to the inner side of the slider, and both ends of the sliding rod are fixedly installed on the inner side of the shell.

9. The ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body according to claim 8, characterized in that: Mounting frames are fixedly mounted on both ends of the bottom of the shell, and the two mounting frames are fixedly mounted on the front side of the crushing equipment body.

10. The ore dressing device for efficiently recovering associated gold and silver in a lead-zinc ore body according to claim 3, characterized in that: A blocking net is fixedly installed on the inner side surface of the dust collecting frame.

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