Cyclone tailing discarding overflow tin and tungsten recovery system

Abstract

A cyclone tailing discarding overflow tin and tungsten recovery system comprises a concentration inclined plate box, a discharge port of the concentration inclined plate box is connected with a classification cyclone set, and materials discharged from an overflow port of the classification cyclone set are sequentially treated through an iron removal magnetic separator and a desliming cyclone set and finally enter a desulfurization device through a desulfurization pipeline. A coarse sand pipeline is connected to a dust sand opening of the classification cyclone set, a stirring tank is arranged on the coarse sand pipeline, a spiral chute is connected to a discharging opening of the stirring tank, a concentrate pipeline and a tailing pipeline are arranged at an outlet of the spiral chute, the concentrate pipeline is connected with the desulfurization pipeline, and the tailing pipeline is connected with the second tailing area. According to the utility model, the stirring barrel and the spiral chute are arranged after sand setting of the cyclone in the grading process, so that a series of problems caused by reselection of setting sand are fundamentally solved, reselection of cassiterite, tungsten and fluorite larger than 10 microns in overflow slurry is achieved, the yield of cassiterite is increased, the production capacity of a factory is improved, and the production cost is reduced. And the economic benefits of factories are greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of tailings treatment, in particular to a cyclone tailings overflow tin and tungsten recovery system. Background Art

[0002] In recent years, the use of tin has become increasingly widespread, and the world's demand for tin is growing. New tin-containing materials are developing rapidly. Among them, tin-containing titanium alloys can be used in aircraft engines, and tin and niobium compounds (Nb3Sn) are important superconductor materials that can be used for nuclear power generation. Due to the development of new technology fields, the use of tin is becoming increasingly widespread, and the world's demand for tin is growing;

[0003] Tailings are the product of mine operation, and there are many rare ores in the tailings that can be recycled. The existing tin-tungsten recovery process is usually tailings concentration-classification-de-sludge-cassiterite flotation-fluorite flotation. In the classification process, the cyclone sedimentation particle size is coarse and the de-sludge overflow has a large mud content and has been in the tailings disposal process. However, after on-site sampling and analysis, the yield of the +10μm particle size in the overflow ore mud is 22.14%, the cassiterite occupancy rate is 22.11%, and the fluorite occupancy rate is 21.66%, which has a high recycling value. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a cyclone tailing overflow tin-tungsten recovery system.

[0005] The utility model is realized through the following technical solutions:

[0006] A cyclone tailings overflow tin-tungsten recovery system comprises a concentrating inclined plate box, the concentrating inclined plate box is connected to a grading cyclone group at its discharge port, the material discharged from the overflow port of the grading cyclone group is processed in turn by an iron removal magnetic separator and a desludging cyclone group, and finally enters a desulfurization device through a desulfurization pipeline, the dust and sand port of the grading cyclone group is connected to a coarse sand pipeline, a stirring tank is arranged on the coarse sand pipeline, the stirring tank discharge port is connected to a spiral chute, a concentrate pipeline and a tailings pipeline are arranged at the outlet of the spiral chute, the concentrate pipeline is connected to the desulfurization pipeline, and the tailings pipeline is connected to a second tailings zone.

[0007] Further optionally, a water supply pipe is provided at the feed inlet of the stirring tank.

[0008] Further optionally, the desludging cyclone group includes a roughing cyclone group and a fine cyclone group, the dust and sand nozzle of the roughing cyclone group is connected to the feed port of the fine cyclone group, and the corresponding overflow ports of the roughing cyclone group and the fine cyclone group are respectively connected to the desulfurization pipeline.

[0009] Further optionally, the discharge port of the desulfurization device is connected to the feed port of the desulfurization inclined plate box, and the discharge port of the desulfurization inclined plate box is connected to the cassiterite flotation section.

[0010] Further optionally, the waste ports corresponding to the concentration inclined plate box and the de-doping inclined plate box are respectively connected to the recovery pipeline leading to the tailings area 1.

[0011] Further optionally, the dust and sand nozzles corresponding to the classification cyclone group and the selection cyclone group and the sulfur mineral discharge port of the desulfurization device are respectively connected to the pipeline leading to the tailings area 2.

[0012] Compared with the existing technology, the beneficial effect of the utility model is that the utility model fundamentally solves a series of problems caused by the recovery of the sediment by arranging a stirring barrel and a spiral chute after the sedimentation in the cyclone in the classification process, thereby achieving the recovery of cassiterite, tungsten and fluorite larger than 10μm in the overflow ore mud, thereby increasing the output of cassiterite, improving the production capacity of the factory, and greatly improving the economic benefits of the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] In the figure: concentrating inclined plate box 1, classifying cyclone group 2, iron removal magnetic separator 3, roughing cyclone group 4, cleaning cyclone group 5, desulfurization device 6, recovery pipeline 7, de-drug inclined plate box 8, spiral chute 9, coarse sand pipeline 10, tailings area 11, tailings area 2 12, desulfurization pipeline 13, mixing tank 14, water supply pipe 15, concentrate pipeline 16, tailings pipeline 17. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementations:

[0016] like Figure 1 As shown, a cyclone tailings overflow tin and tungsten recovery system comprises a concentrating inclined plate box 1, the concentrating inclined plate box 1 is connected to a grading cyclone group 2 at its discharge port, the material discharged from the overflow port of the grading cyclone group 2 is processed in turn by an iron removal magnetic separator 3 and a desludging cyclone group, and finally enters a desulfurization device 6 through a desulfurization pipeline 13, characterized in that: a coarse sand pipeline 10 is connected to a dust and sand outlet of the grading cyclone group 2, a stirring tank 14 is provided on the coarse sand pipeline 10, a spiral chute 9 is connected to the discharge port of the stirring tank 14, a concentrate pipeline 16 and a tailings pipeline 17 are provided at the outlet of the spiral chute 9, the concentrate pipeline 16 is connected to the desulfurization pipeline 13, and the tailings pipeline 17 is connected to the tailings zone 2 12.

[0017] like Figure 1 As shown, a water supply pipe 15 is provided at the feed inlet of the stirring tank 14 .

[0018] like Figure 1As shown, the desludging cyclone group includes a roughing cyclone group 4 and a fine cyclone group 5, the dust and sand nozzle of the roughing cyclone group 4 is connected to the feed port of the fine cyclone group 5, and the corresponding overflow ports of the roughing cyclone group 4 and the fine cyclone group 5 are respectively connected to the desulfurization pipeline 13.

[0019] like Figure 1 As shown, the discharge port of the desulfurization device 6 is connected to the feed port of the desulfurization inclined plate box 8, and the discharge port of the desulfurization inclined plate box 8 is connected to the cassiterite flotation section.

[0020] like Figure 1 As shown, the waste ports of the corresponding thickening inclined plate box 1 and the dedoping inclined plate box 8 are respectively connected to the recovery pipeline 7 leading to the tailings area 11.

[0021] like Figure 1 As shown, the dust and sand nozzles of the corresponding classification cyclone group 2 and the concentration cyclone group 5 and the sulfur mineral discharge port of the desulfurization device 6 are respectively connected to the pipeline leading to the tailings area 2 12.

[0022] The implementation principle of a cyclone tailing overflow tin-tungsten recovery system in the present application embodiment is as follows:

[0023] When recovering tin and tungsten, the ore is first added to the concentration inclined plate box 1 for separation. The concentration inclined plate box 1 will directly send the impurities and waste rocks to the tailings area 11 through the recovery pipeline 7, and the rough ore with a higher tin content will be sent to the classification cyclone group 2 (the classification cyclone group 2 uses a φ500 cyclone and the sand settling nozzle is φ50) for classification. After classification by the classification cyclone group 2, the minerals overflowing from the overflow pipe will enter the iron removal magnetic separator 3 for iron removal. After iron removal, the ore will enter the desludging process to remove mud and impurities;

[0024] When entering the desludging process, it will first enter the roughing cyclone group 4 (the roughing cyclone group 4 adopts a φ250 cyclone and a φ50 sand settling nozzle) for preliminary desludging. At the same time, the sand and gravel discharged from the sand settling nozzle of the roughing cyclone group 4 will enter the fine cyclone group 5 (the fine cyclone group 5 adopts a φ75 cyclone and a φ16 sand settling nozzle) for further fine desludging. At the same time, the ore obtained by the roughing cyclone group 4 and the fine cyclone group 5 will be discharged from the corresponding overflow port, and then enter the desulfurization device 6 through the desulfurization pipeline 13 for desulfurization;

[0025] The coarse sand discharged from the sand settling nozzle of the grading cyclone group 2 will enter the mixing tank 14, and at the same time, the water supply pipe 15 starts to supply water, and the mixing tank 14 starts to work to mix the coarse sand and water into slurry. The formed slurry will enter the spiral chute 9 from the discharge port of the mixing tank 14. The slurry entering the spiral chute 9 will flow downward from the top. After spiral motion in the chute slide, particles with different specific gravities in the slurry will be slowly separated by the action of centrifugal force, and finally enter the corresponding concentrate pipeline 16 and tailings pipeline 17 from the bottom discharge port of the spiral chute 9. The ore entering the concentrate pipeline 16 will directly enter the desulfurization device 6 for desulfurization;

[0026] The desulfurized ore will enter the desulfurization inclined plate box 8, and the desulfurized ore will be desulfurized at the same time. The desulfurized ore will continue to be sorted through the desulfurization inclined plate box 8, and the useless impurities and ore will be discharged into the tailings area 11, and the tin-containing ore will be transported to the cassiterite flotation process for further work;

[0027] At the same time, impurities entering the tailings pipeline 17 from the spiral chute 9, iron minerals from the iron removal magnetic separator 3, tailings discharged from the dust and sand nozzle of the concentrating cyclone group 5, and sulfur minerals discharged from the desulfurization device 6 will be transported to the tailings second area 12 through the pipeline for storage;

[0028] The above is the improvement process of the tin-tungsten recovery process after the tailings overflow. The whole process greatly increases the output of rare ores.

[0029] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cyclone tailing overflow tin and tungsten recovery system, comprising a concentration inclined plate box (1), the discharge port of the concentration inclined plate box (1) is connected to a classification cyclone group (2), the material discharged from the overflow port of the classification cyclone group (2) is processed in turn by an iron removal magnetic separator (3) and a desludging cyclone group, and finally enters a desulfurization device (6) through a desulfurization pipeline (13), characterized in that The dust and sand outlet of the classification cyclone group (2) is connected to a coarse sand pipeline (10), a stirring tank (14) is arranged on the coarse sand pipeline (10), the discharge port of the stirring tank (14) is connected to a spiral chute (9), a concentrate pipeline (16) and a tailings pipeline (17) are arranged at the outlet of the spiral chute (9), the concentrate pipeline (16) is connected to the desulfurization pipeline (13), and the tailings pipeline (17) is connected to the second tailings area (12).

2. A cyclone tailing overflow tin-tungsten recovery system according to claim 1, characterized in that: A water supply pipe (15) is provided at the feed inlet of the stirring tank (14).

3. The cyclone tailing overflow tin-tungsten recovery system according to claim 1 is characterized by: The desludging cyclone group comprises a roughing cyclone group (4) and a fine cyclone group (5); the dust and sand nozzle of the roughing cyclone group (4) is connected to the feed port of the fine cyclone group (5); and the corresponding overflow ports of the roughing cyclone group (4) and the fine cyclone group (5) are respectively connected to the desulfurization pipeline (13).

4. The cyclone tailing overflow tin-tungsten recovery system according to claim 1 is characterized by: The discharge port of the desulfurization device (6) is connected to the feed port of the desulfurization inclined plate box (8), and the discharge port of the desulfurization inclined plate box (8) is connected to the cassiterite flotation section.

5. The cyclone tailing overflow tin-tungsten recovery system according to claim 4 is characterized by: The waste material ports corresponding to the concentration inclined plate box (1) and the de-doping inclined plate box (8) are respectively connected to the recovery pipeline (7) leading to the tailings area (11).

6. The cyclone tailing overflow tin-tungsten recovery system according to claim 1 is characterized by: The dust and sand nozzles corresponding to the classification cyclone group (2) and the selection cyclone group (5) and the sulfur mineral discharge port of the desulfurization device (6) are respectively connected to the pipeline leading to the tailings area 2 (12).

Images