Tin reclaiming method for fine-grain and low-grade secondary mineral tailings

A recovery method and low-grade technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve problems such as poor dissociation degree of tin monomer, complex and difficult tin beneficiation, and low recovery rate, so as to promote Separation, significant economic and social significance, and the effect of increasing recycling rates

Active Publication Date: 2013-11-06
广西华锡矿业有限公司再生资源分公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the disadvantages and deficiencies of complex tin beneficiation, poor dissociation degree of tin monomer,

Method used

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  • Tin reclaiming method for fine-grain and low-grade secondary mineral tailings
  • Tin reclaiming method for fine-grain and low-grade secondary mineral tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: The raw material is secondary tailings with a particle size of -0.074mm and a grade of 0.20% tin.

[0028] (1) Treatment of re-throwing tailings before secondary tailings:

[0029] A. Put the secondary tailings into the vibrating sieve for classification and screening, and the +1.5mm particle size product will enter the next grinding process, -1.5—0.074mm particle size product will enter the sorting operation, and -0.074mm will enter the high-efficiency inclined plate thickening box;

[0030] B. Transfer the +1.5mm tailings to the primary grinding process for coarse grinding, and grind to 0.074mm, accounting for 30%. The grinding products are screened by the vibrating screen, and the +1.5mm tailings are directly thrown away, and -1.5mm The particle size enters the sweeping screw chute operation;

[0031] C. Put the -1.5mm particle size product under the vibrating screen into the roughing screw chute to obtain the wool concentrate product suitable for the sel...

Embodiment 2

[0040] Example 2: The raw material is secondary tailings with a particle size of -0.068mm and a grade of 0.25% tin.

[0041] (1) Treatment of re-throwing tailings before secondary tailings:

[0042] A. Put the secondary tailings into the vibrating sieve for classification and screening to obtain +1.5mm and -1.5mm products; +1.5mm enters into B, and -1.5mm is classified to obtain +0.074mm into coarse Selecting snails and sorting, -0.074mm enters the high-efficiency inclined plate thickening box;

[0043] B. The tailings with a particle size of +1.5mm are transferred to the first-stage grinding process for coarse grinding, and the ground to a particle size of 0.074mm accounts for 32%; the grinding products are screened, and the tailings with a particle size of +1.5mm are directly thrown away; The rougher snail tailings are merged and enter the sweeping snail separation;

[0044] C. Combine the rough-separated spiral chute tailings product and the coarsely ground -1.5mm grain g...

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Abstract

The invention discloses a tin reclaiming method for fine-grain and low-grade secondary mineral tailings. The tin reclaiming method comprises the procedures including front hoisting and tailings throwing, fine silt separating, and the like, wherein the procedure of front hoisting and tailings throwing of secondary mineral tailings comprises the steps of primary screening and classification, primary ore grinding and secondary screening and classification; the procedure of fine silt separating comprises the steps of classification and swirler treatment. According to the invention, separated mineral tailings are classified again, and a swirler is used for desliming, so that the equilibrium quantity and the concentration of ore slurry flowing into a fine silt yun tin shaking bed are ensured, separation of tin and silt slag is improved, the defect that in the traditional process, tin separation is complicated and difficult, the degree of dissociation of tin monomer is poor and the recovery rate is low due to low grade of mineral tailings can be overcome, the separating capability of tin separation is improved, the tin concentrate recovery rate of the shaking bed is improved, and reclaiming and cyclic utilization of waste material are realized.

Description

technical field [0001] The invention relates to the technical field of metallurgy and chemical industry, in particular to a method for recovering tin from fine-grained low-grade secondary tailings. Background technique [0002] Mineral resources are an important supporting force and fundamental foundation of the national economy. my country has a vast land and abundant resources, and is particularly rich in mineral resources. There are extremely large basic reserves of various minerals in my country, such as tin, rare earths, antimony, and copper. [0003] The main use of tin is to make tinplate, various alloys and solder, and there are other new uses, such as making smoke suppressants, flame retardants, bullets, etc. In my country, placer tin ore is the main mining object of tin ore at present, accounting for about 75% of the total mining volume. Although the development and utilization of tin ore resources has greatly promoted the development of the world economy for a l...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 黎君欢容振华丁巨平苏维龙杨明广陈宗平李花福蒙华清杨奕旗罗朝艳魏大利许国宝
Owner 广西华锡矿业有限公司再生资源分公司
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