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Beneficiation method capable of recycling valuable metal from tin magnetic pyrite

A technology for pyrrhotite and valuable metals, which is applied in the field of beneficiation for recycling valuable metals, can solve the problems of no industrial value and low enrichment of tin minerals, and achieve improved monomer dissociation, environmental friendliness, Reduce the effect of over-crushing

Inactive Publication Date: 2017-08-18
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are more than 20 kinds of tin minerals that have been discovered so far, only cassiterite and yellow tin ore are economically significant. The rest of the tin minerals are not highly enriched and have no industrial value.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In a concentrator in Wenshan, Yunnan Province, after copper and zinc were selected, the sulfur concentrate was first floated for the next step of tin selection, and finally the sulfur concentrate was discarded. The fineness of the sulfur concentrate was 73%-0.074mm, and the valuable components were only Cassiterite and sulfur concentrate are mainly pyrrhotite, containing 0.30% tin and 24.56% sulfur. The main gangue minerals are quartz, calcite and biotite. The above-mentioned ore sample is processed through the following process steps:

[0025] A: Put the ore sample into the mixing tank to adjust the slurry, so that the concentration of the slurry is 20%, discharge the slurry to the pump pool, use the slurry pump to pump it to the cyclone FX125 for classification, and the cyclone to sink into the rod mill MBS2430. Mine, the discharge of the rod mill enters the pump pool. The overflow of the cyclone is conveyed to the next operation;

[0026] B: The overflow of the cy...

Embodiment 2

[0030] In a dressing plant in Honghe, Yunnan Province, during the process of zinc selection, sulfur concentrate is produced. The sulfur concentrate belongs to the discarded ore sample of the dressing plant. The fineness is 81%-0.074mm. The only valuable component is cassiterite. The sulfur concentrate is mainly Pyrrhotite, containing 0.32% tin and 21.08% sulfur. The main gangue minerals are tremolite, potassium feldspar and pyrope. The above-mentioned ore sample is processed through the following process steps:

[0031] A: Put the ore sample into the mixing tank to adjust the slurry, so that the concentration of the slurry is 25%, discharge the slurry to the pump pool, use the slurry pump to pump it to the cyclone FX125 for classification, and the cyclone to sink into the rod mill MBS2130. Mine, the discharge of the rod mill enters the pump pool. The overflow of the cyclone is conveyed to the next operation;

[0032] B: The overflow of the cyclone is fed into the magnetic s...

Embodiment 3

[0036] In a concentrator in Tengchong, Yunnan Province, during the process of copper and iron separation, sulfur concentrate is produced. The sulfur concentrate belongs to the discarded ore sample of the concentrator, with a fineness of 69%-0.074mm. The only valuable components are cassiterite and sulfur concentrate. It is mainly pyrrhotite, containing 0.36% tin and 20.42% sulfur. The main gangue minerals are quartz, muscovite and dolomite. The above-mentioned ore sample is processed through the following process steps:

[0037]A: Put the ore sample into the mixing tank to adjust the slurry, so that the concentration of the slurry is 22%, discharge the slurry to the pump pool, use the slurry pump to pump it to the cyclone FX150 for classification, and the cyclone to sink into the rod mill MBS2130. Mine, the discharge of the rod mill enters the pump pool. The overflow of the cyclone is conveyed to the next operation;

[0038] B: The overflow of the cyclone is fed into the ma...

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Abstract

The invention discloses a beneficiation method capable of recycling valuable metal from tin magnetic pyrite. The method comprises graded ore grinding work, magnetic separation work, thick flotation work and reselection work. The method has the beneficial effects that a bar grinding machine is adopted to grade ground ore in advance, over pulverizing of tin stone can be reduced, the single separation degree of the tin stone can be increased, and the precondition is provided for effective recycling of the tin stone; secondly, magnetic separation is adopted to remove the magnetic pyrite with the large proportion and the higher iron containing rate, floatation is adopted to remove the magnetic pyrite with the large proportion and the higher sulphur containing rate, disturbance of heavy mineral is reduced, and the advantage is created for subsequent reselection and separation of tin stone; thirdly, the middling re-grinding and reselection flow is adopted, energy consumption of ore grinding can be reduced, over pulverizing of the tin stone is reduced, the single separation degree of tin stone can be improved, the cost is low, and industrial production is easily achieved; fourthly, secondary pollutions in the production process are not needed, and the method is friendly to the environment.

Description

technical field [0001] The invention belongs to the technical field of mining engineering, and in particular relates to a beneficiation method for recovering valuable metals from tin-containing pyrrhotite. Background technique [0002] Tin is a silver-white metal with low melting point, corrosion resistance, good fatigue resistance and high plasticity. With the development of science and technology, the application fields of tin are increasing day by day, and there are broad prospects in various fields of national economy and national defense construction. Tin alloys are widely used in aircraft engines, missile materials, etc. Although there are more than 20 kinds of tin minerals that have been discovered so far, only cassiterite and yellow tin ore are economically significant. The rest of the tin minerals are not highly enriched and have no industrial value. The biggest feature of cassiterite is high hardness, high density, brittle and brittle, with a density of 6.8-7.2g / ...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B1/00
CPCB03B1/00B03B7/00
Inventor 梁溢强杨林乔吉波吕超张晶简胜
Owner KUNMING METALLURGY INST
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