Method for removing thallium in zinc hydrometallurgy solution purification process

A technology for solution purification and hydrometallurgy of zinc, which is applied in the improvement of process efficiency, photography process, instruments, etc., can solve the problems of production fluctuation, increased consumption of zinc powder, harmfulness, etc., and achieves extended production cycle, low cost, and good effect. Effect

Inactive Publication Date: 2015-09-09
ZHUZHOU SMELTER GRP
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  • Abstract
  • Description
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Problems solved by technology

[0002] In the zinc hydrometallurgy process, thallium is very harmful to the electrolytic deposition process of zinc hydrometallurgy, which can easily cause serious "burning board" and induce "burning board" of other impurities, which will have an adverse effect on product output and technical and economic quota indicators, resulting in The continuous fluctuation of production cannot be carried out normally
In the purification process of zinc hydrometallurgy solution, in order to remove thallium, it is necessary to improve the process control conditions, and at the same time increase the consumption of zinc powder, the effect of thallium removal is difficult to be guaranteed

Method used

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Examples

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Embodiment Construction

[0010] Below in conjunction with example the present invention will be further described.

[0011] Prepare the required lead acetate solution with a lead acetate concentration of 300g / L; during the purification process of the zinc hydrometallurgy solution, the solution flow rate is 300m 3 / h; during the solution purification process, control the normal cadmium removal temperature, reactor time, and zinc powder addition; add the prepared lead acetate solution, and the flow rate is 30L / h; carry out the thallium removal reaction, and carry out liquid-solid After separation, thallium enters the slag, and the solution contains 0.0002g / L of thallium, which fully meets the requirements of electrolysis, and will not cause "burning plate" in the process of zinc electrolysis due to thallium.

[0012] The present invention adds lead acetate to remove thallium in the purification process of the zinc hydrometallurgy solution, does not need to increase additional reaction time, is carried o...

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Abstract

The invention relates to a method for removing thallium in a zinc hydrometallurgy solution purification process. The method includes: preparing a 200-800g / L lead acetate solution, adding the prepared lead acetate solution into a solution purification tank to remove thallium, after thallium removal reaction, carrying out liquid-solid separation, and letting thallium enter slag. The method provided by the invention does not extend the production period and also does not increase additional equipment investment, the cost is low, and the effect is good.

Description

technical field [0001] The invention relates to a method for removing thallium in the process of purifying zinc solution in wet smelting. Background technique [0002] In the zinc hydrometallurgy process, thallium is very harmful to the electrolytic deposition process of zinc hydrometallurgy, which can easily cause serious "burning board" and induce "burning board" of other impurities, which will have an adverse effect on product output and technical and economic quota indicators, resulting in The continuous fluctuation of production cannot be carried out normally. In the purification process of zinc hydrometallurgy, in order to remove thallium, it is necessary to improve the process control conditions and increase the consumption of zinc powder, so it is difficult to guarantee the effect of thallium removal. Contents of the invention [0003] The purpose of the present invention is to provide a method for removing thallium during the purification process of zinc hydromet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/44C22B19/00C25C1/16
CPCY02P10/20
Inventor 刘朗明陈爱国赵晓朝李文袁建明彭晓峰彭加虎吴亨付
Owner ZHUZHOU SMELTER GRP
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