Production technique of zinc sulfate monohydrate

A production process, zinc sulfate technology, applied in the direction of zinc sulfate, etc., can solve the problems of cadmium content not meeting the technical requirements, low cadmium content, high zinc content, etc., to improve raw material utilization rate and product output rate, and reduce heat energy consumption , the effect of increasing the content of zinc

CN103708531AInactive Publication Date: 2014-04-09PINGXIANG BAOHAI FEED ADDITIVE

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: PINGXIANG BAOHAI FEED ADDITIVE
Publication Date: 2014-04-09
Estimated Expiration: Not applicable · inactive patent

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Abstract

The invention discloses a production technique of zinc sulfate monohydrate, which comprises the following steps: reacting zinc oxide and a sulfuric acid solution, carrying out pressure filtration to form a primary acid leaching solution and primary acid leaching slag, adding oxydol and zinc oxide into the primary acid leaching solution to oxidize and precipitate iron, adding the primary acid leaching slag into a sulfuric acid solution to perform secondary acid leaching, carrying out pressure filtration to form a secondary acid leaching solution and secondary acid leaching slag, adding scrap iron and P204 into the secondary acid leaching solution, reacting the secondary acid leaching solution and zinc oxide to perform iron removal and neutralization, adding zinc powder for replacement and purification, and adding the secondary acid leaching solution subjected to replacement and purification into the primary acid leaching solution; and carrying out triple effect evaporation crystallization by using hot vapor to obtain the zinc sulfate monohydrate crystal. The technique enhances the zinc content in the acid leaching solution, lowers the cadmium content in the acid leaching solution, improves the product quality, and enhances the raw material utilization ratio and product yield; and meanwhile, the acid leaching solution is subjected to triple effect evaporation crystallization to reduce the hot vapor required by evaporation crystallization, thereby lowering the thermal energy consumption.

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Description

technical field

[0001] The present invention relates to the production technology method of sulfate, particularly relate to the production technology method of zinc sulfate monohydrate. Background technique

[0002] Zinc sulfate monohydrate is a white flowing powder, easily deliquescent in the air, easily soluble in water, slightly soluble in alcohol, insoluble in ketone, it is mainly used as the raw material for the manufacture of zinc barium powder and zinc salt, as well as viscose fiber and Pooh An important auxiliary material for fiber, it can also be used as printing and dyeing agent, wood and leather agent, bone glue clarifying and protecting agent, medical emetic and fungicide; it can be used for electroplating, flotation ore, preventing fruit tree seedling disease and circulating cooling water treatment It can also be used as fertilizer and feed additive, etc. It is a chemical product with a very wide range of uses. Zinc is one of the indispensable and important tra...

Claims

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