Production method for zinc sulfate

A production method, the technology of zinc sulfate, applied in the chemical industry, can solve the problems of polluting the environment, easily generating waste, waste, etc.

Inactive Publication Date: 2017-05-31
HENGYANG YISHUN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing zinc sulfate production method is unreasonable, the process steps are complicated, and it is easy to produce waste, which not only pollutes the environment, but also causes waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A production method of zinc sulfate, comprising the steps of:

[0022] (1) Grind and pulverize the zinc concentrate into 50 mesh powder, and then put it into a sealed container;

[0023] (2) Add ferrous sulfate whose mass fraction is zinc concentrate powder 1wt% to the container of step (1) as a catalyst, add sulfuric acid solution at the same time, the concentration of sulfuric acid solution is 15wt%, the mass fraction of sulfuric acid solution and zinc concentrate powder The ratio is 108:1;

[0024] (3) Turn on the electric stirrer and heat to 80°C for 3 hours;

[0025] (5) Filtration, cooling, suction filtration, obtained leaching solution and leaching residue, the leaching residue is extracted with tetrafluoroethylene to recover by-product sulfur;

[0026] (6) Solvent extraction is used to separate the leaching solution. The extraction solvent is P507 sulfonated kerosene system. The leaching solution is acidified, concentrated, evaporated, crystallized, centrifuge...

Embodiment 2

[0028] A production method of zinc sulfate, comprising the steps of:

[0029] (1) Grinding and pulverizing the zinc concentrate into 80-mesh powder, and then adding it into a sealed container;

[0030] (2) Add ferrous sulfate with a mass fraction of 3wt% of zinc concentrate powder to the container of step (1) as a catalyst, and add sulfuric acid solution at the same time. The concentration of sulfuric acid solution is 17wt%. The mass fraction of sulfuric acid solution and zinc concentrate powder The ratio is 115:1;

[0031] (3) Turn on the electric stirrer and heat to 90°C for 5 hours;

[0032] (5) Filtration, cooling, suction filtration, obtained leaching solution and leaching residue, the leaching residue is extracted with tetrafluoroethylene to recover by-product sulfur;

[0033] (6) Solvent extraction is used to separate the leaching solution. The extraction solvent is P507 sulfonated kerosene system. The leaching solution is acidified, concentrated, evaporated, crystall...

Embodiment 3

[0035] A production method of zinc sulfate, comprising the steps of:

[0036] (1) Grind and crush the zinc concentrate into 60-mesh powder, and then put it into a sealed container;

[0037] (2) Add ferrous sulfate with a mass fraction of 2wt% of zinc concentrate powder to the container of step (1) as a catalyst, and add sulfuric acid solution at the same time. The concentration of sulfuric acid solution is 16wt%. The mass fraction of sulfuric acid solution and zinc concentrate powder The ratio is 110:1;

[0038] (3) Turn on the electric stirrer and heat to 85°C for 4 hours;

[0039] (5) Filtration, cooling, suction filtration, obtained leaching solution and leaching residue, the leaching residue is extracted with tetrafluoroethylene to recover by-product sulfur;

[0040] (6) Solvent extraction is used to separate the leaching solution. The extraction solvent is P507 sulfonated kerosene system. The leaching solution is acidified, concentrated, evaporated, crystallized, centri...

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PUM

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Abstract

The invention provides a production method for zinc sulfate. The production method comprises the following steps: grinding and crushing zinc concentrate into powder with a particle size of 50 to 80 meshes and adding the powder into a hermetic container; adding ferrous sulfate accounting for 1 to 3 wt% of the zinc concentrate powder into the container as a catalyst and adding a sulfur acid solution at the same time; starting an electric mixer, carrying out heating to 80 to 90 DEG C and maintaining the temperature for 3 to 5 h; successively carrying out filtering, cooling and pumping filtration so as to obtain leachate and leaching residues; and separating the leachate by using a solvent extraction method and subjecting the leachate to acidity adjustment, concentration, evaporation, crystallization, centrifugation and drying so as to obtain zinc sulfate. The production method provided by the invention can guarantee the purity of the zinc sulfate product and enables resources to be maximally utilized.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and specifically refers to a production method of zinc sulfate. Background technique [0002] Zinc sulfate is a very important industrial raw material, widely used in chemical industry, agriculture, water treatment, electroplating and other industries. Zinc sulfate is also the main raw material for the production of zinc salt and lithopone, and it can also be used as wood and leather antiseptic, man-made fiber precipitant, bone glue clarification and other applications. In agriculture, in addition to being used to prevent fruit trees from infesting insects, it is mainly used as a trace element fertilizer, as an inhibitor in mineral processing, ore is used to prepare electrolytes in the electroplating industry. In addition, because zinc is one of the "life metals", people pay much attention to it. Modern medicine uses zinc sulfate syrup or sugar tablets to prevent and treat zinc deficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/06
CPCC01G9/06C01G9/003C01P2006/80
Inventor 罗秋
Owner HENGYANG YISHUN CHEM CO LTD
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