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Method for treating zinc sulfate solution

A zinc sulfate solution and purification treatment technology, which is applied in the chemical industry, can solve problems such as adverse effects of the working environment and increase the risk of safe operation of purification operations, and achieve the effects of reducing treatment costs, avoiding the deterioration of the working environment, and reducing energy consumption for treatment

Active Publication Date: 2016-04-06
云南永昌铅锌股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the temperature is not lowered, β-naphthol or xanthol will be decomposed quickly, which will have an adverse effect on the working environment and increase the risk of safe operation of purification operations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Zinc sulfate solution (solution composition: Zn: 120.57~150g / L, Fe: 7.11~18g / L, Ni: 0.65~1.4g / L, Co: 0.31~1.2g / L, Cu: 0.25~0.98g / L L) transported to a closed purification container, the control delivery volume is 45m 3 / h, the delivery pressure is 0.02~0.15MPa; open the airtight purification container stirring device, control the stirring speed to 120r / min; the gas flow rate is 30m 3 Ammonia gas is passed into the airtight purification container at the speed of / min, so as to replace the air in the airtight purification container; Then, in the cooling system provided in the airtight purification container, the cooling liquid is passed into to cool the zinc sulfate solution in the airtight purification container to 10 ℃, control the coolant flow to 30m 3 / h, the coolant returns to the storage tank for recycling; at the same time, adjust the pressure in the airtight purification container to reach 0.01MPa; add zinc powder into the airtight purification container through ...

Embodiment 2

[0027] The zinc sulfate solution to be treated is the same as embodiment 1, and the zinc sulfate solution is transported in the airtight purification container, and the control delivery volume is 45m 3 / h, the delivery pressure is 0.02~0.15MPa; open the airtight purification container stirring device, control the stirring speed to 120r / min; the gas flow rate is 30m 3 Ammonia gas is passed into the airtight purification container at a speed of / min to replace the air in the airtight purification container; ℃, control the coolant flow to 30m 3 / h, the coolant returns to the storage tank for recycling; at the same time, adjust the pressure in the airtight purification container to reach 0.1MPa; add zinc powder into the airtight purification container through the zinc powder feeding device for replacement, purification and impurity removal, and control the addition of zinc powder The amount is 8 times of the total content of copper, cadmium, nickel and cobalt in the zinc sulfate ...

Embodiment 3

[0029]The zinc sulfate solution to be treated is the same as embodiment 1, and the zinc sulfate solution is transported in the airtight purification container, and the control delivery volume is 45m 3 / h, the delivery pressure is 0.02~0.15MPa; open the airtight purification container stirring device, control the stirring speed to 120r / min; the gas flow rate is 30m 3 Inject carbon dioxide into the airtight purification container at a speed of / min in order to replace the air in the airtight purification container; then pass cooling liquid into the cooling system set in the airtight purification container to cool the zinc sulfate solution in the airtight purification container to 10°C , control the coolant flow rate to 30m 3 / h, the coolant returns to the storage tank for recycling; at the same time, adjust the pressure in the airtight purification container to reach 0.01MPa; add zinc powder into the airtight purification container through the zinc powder feeding device for repl...

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PUM

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Abstract

The invention discloses a method for treating a zinc sulfate solution. The zinc sulfate solution contains at least one of copper, cadmium, nickel and cobalt. The method comprises adding zinc powder into the zinc sulfate solution in the presence of ammonia gas or carbon dioxide to purify the zinc sulfate solution so that the purified zinc sulfate solution and solid impurities are obtained. The method can effective solve the problem that the prior art has complex zinc sulfate solution follow-up treatment processes and a low valuable metal recovery rate. The method can obviously reduce a treatment cost.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular, the invention relates to a method for treating zinc sulfate solution. Background technique [0002] In the zinc hydrometallurgy process, the zinc sulfate solution is usually purified by using antimony salt or antimony salt combined with β-naphthol or xanthol to purify and remove impurities. One-stage purification removes copper and cadmium, and the temperature is controlled at 40-70°C , The second-stage purification removes nickel and cobalt, the temperature is controlled between 80-95°C, and the third-stage purification removes residual cobalt using β-naphthol or xanthol. In the actual production process, cobalt and nickel are easier to redissolve when filtered after high-temperature purification, and the use of β-naphthol or xanthol to purify and remove residual cobalt needs to control the operating temperature at 30-45°C. Because the temperature of the liquid after high-temperat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/46C22B19/00
CPCY02P10/20
Inventor 何光深王吉坤钱建波朱国邦匡志恩张志军李祖梅周先超王家焕姜自林李永连汤绍鹏王伦顺朱国清李碧科
Owner 云南永昌铅锌股份有限公司