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Process for recovering cassiterite in fine slit by means of reselection-floating-reselection principle

A technology of fine mud and cassiterite, which is applied in the field of mineral recovery, can solve the problems of short process time, high environmental harm, and low environmental pollution, so as to reduce the harm to the environment and workers, avoid repeated addition of pharmaceutical agents, and reduce workload. Effect

Inactive Publication Date: 2014-07-23
广西华锡集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention solves the problems of long process time and great environmental hazards existing in the traditional process technology, and provides a recovery process of heavy-float-heavy fine-scale cassiterite with short process time, low cost and little environmental pollution

Method used

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  • Process for recovering cassiterite in fine slit by means of reselection-floating-reselection principle
  • Process for recovering cassiterite in fine slit by means of reselection-floating-reselection principle

Examples

Experimental program
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Effect test

Embodiment 1

[0022] First classify the tin fine-grained pulp, transport the tin fine-grained pulp with a tin grade of 0.23 to the recovery workshop of fine-sludge cassiterite, and then perform the following steps:

[0023] (1) Concentration and dehydration: First, transport the fine-grained tin slurry to a conical thickener for concentration and dehydration to obtain tin fine mud with a tin grade of 0.28;

[0024] (2) Vibration screening: use a vibrating sieve to remove coarse ends and impurities in the tin fine mud, and obtain tin fine mud with a tin grade of 0.35;

[0025] (3) Shaker enrichment: set the shaker stroke to 9 mm, stroke rate 340 times / min, use the shaker to pre-enrich the tin fine sludge produced in step (2), and obtain Maoxi Jing with a tin grade of 1.90 mine;

[0026] (4) Flotation desulfurization: Prepare one part each of copper sulfate and xanthate solution, the solute weight percentages are: 1% and 1% respectively, and then pour the mao tin concentrate produced in step...

Embodiment 2

[0029] First classify the tin fine-grained pulp, transport the tin fine-grained pulp with a tin grade of 0.23 to the recovery workshop of fine-sludge cassiterite, and then perform the following steps:

[0030] (1) Concentration and dehydration: First, transport the fine-grained tin slurry to a conical thickener for concentration and dehydration to obtain tin fines with a tin grade of 0.26;

[0031] (2) Vibration screening: use a vibrating sieve to remove coarse ends and impurities in the tin fine mud, and obtain tin fine mud with a tin grade of 0.30;

[0032] (3) Shaker enrichment: set the shaker stroke to 10 mm, stroke rate 330 times / min, use the shaker to pre-enrich the tin fine sludge produced in step (2), and obtain mao tin concentrate with a tin grade of 1.70 mine;

[0033] (4) Flotation desulfurization: Prepare one part each of copper sulfate and xanthate solution, the solute weight percentages are: 1% and 1% respectively, and then pour the mao tin concentrate produced ...

Embodiment 3

[0036] First classify the tin fine-grained pulp, transport the tin fine-grained pulp with a tin grade of 0.23 to the recovery workshop of fine-sludge cassiterite, and then perform the following steps:

[0037] (1) Concentration and dehydration: Firstly, the fine-grained tin slurry is transported to the conical thickener for concentration and dehydration to obtain tin fine mud with a tin grade of 0.30;

[0038] (2) Vibration screening: use a vibrating sieve to remove coarse ends and impurities in the tin fine mud, and obtain tin fine mud with a tin grade of 0.32;

[0039](3) Shaker enrichment: set the shaker stroke to 11 mm, stroke rate 360 ​​times / min, use the shaker to pre-enrich the tin fine sludge produced in step (2), and obtain Maoxi Jing with a tin grade of 2.10 mine;

[0040] (4) Flotation desulfurization: Prepare one part each of copper sulfate and xanthate solution, the solute weight percentages are: 1% and 1% respectively, and then pour the mao tin concentrate produ...

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Abstract

The invention discloses a process for recovering cassiterite in fine slit by means of the reselection-floating-reselection principle. The method comprises the procedures of concentration and dehydration, coarse cassiterite separation, preconcentration, flotation desulfurization and the like. Dehydration and concentration and coarse cassiterite separation are performed on tin fine pulp, coarse concentrate is separated out through a table concentrator, a sulphide ore is removed through a reverse flotation method, and tin concentrate is separated out through the table concentrator finally. Compared with the traditional process, even through the procedures of concentration and dehydration, coarse cassiterite separation and impurity removal are required by all the processes, by means of the reselection-floating-reselection principle, the coarse concentrate is obtained through preconcentration firstly, select-in grade of cassiterite in fine slit is improved, quantity of ore entering the main separation procedure is greatly decreased, workload of the main separation procedure is reduced, and qualified tin concentrate is obtained directly. Furthermore, the recovery rate of the tin is not lower than that of the traditional process, no repeated addition of a great amount of chemicals is needed, and harm to the environment and workers caused by production is avoided.

Description

technical field [0001] The invention relates to a method for recovering minerals, in particular to a method for recovering fine peatsite. Background technique [0002] Long-term mining has made mineral resources less and less, the grade of raw ore is getting lower and lower, and the crystals are getting finer and finer. During the mining process, fine-grained ore is easier to be muddy. A considerable part of it is also muddy. The ore in this part of fine mud is difficult to recover, the cost is high, and the requirements for process flow and equipment configuration are also high. With the development of beneficiation technology and the rise of ore price, there is more and more room for ore recovery in fine mud. Effective recovery of ore in fine mud can not only make reasonable use of limited mineral resources, but also increase profits for enterprises. In recent years, many domestic enterprises have increased the research on the recovery process of fine clay cassiterite, ...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 王美娇周德炎唐凤玲梁炳玉蒙烨锋梁秀霞许大洪唐旭贵郑文军农志民刘军周炎韦英锐卢定全卢海罗恒翔
Owner 广西华锡集团股份有限公司