Method for obtaining high-purity zinc by electrolyzing zinc chloride

A zinc chloride, high-purity technology, applied in the direction of photography technology, equipment, photography auxiliary technology, etc., to achieve the effect of solving post-processing problems

Inactive Publication Date: 2012-05-16
ORISI SILICON +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there have been no reports on the use of chloride electrolytic hydrometallurgy

Method used

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  • Method for obtaining high-purity zinc by electrolyzing zinc chloride
  • Method for obtaining high-purity zinc by electrolyzing zinc chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Put 80g of ammonium chloride and 100g of sodium chloride into a beaker respectively, stir and dissolve with deionized water.

[0032] 2. Dissolve 160 grams of zinc chloride in the above conductive saline solution.

[0033] 3. Use such as figure 1 In the shown electrolysis system device, the solution in the beaker is transferred to a large volume cylinder of 1L and then poured into a 1L plexiglass buffer tank 14 .

[0034]4. Use a zinc sheet with a Zn99.99% content as an anode of 30×40mm, and a 30×40mm polished pure aluminum sheet as a cathode, and turn on a 0.02A direct current to electrolyze the above electrolyte for 1 hour.

[0035] 5. Use a peristaltic pump to inject the electrolyte after electrolytic treatment with a small current into a 300mL glass electrolytic cell 1, use a RuTi-coated DSA anode of 40×60mm, a polished aluminum cathode of 40×60mm, and control the electrode distance to 4cm, and pass 2A DC current for electrolysis .

[0036] 6. After 1 hour of ...

Embodiment 2

[0054] 1. Put 80g of ammonium chloride and 100g of sodium chloride into a beaker respectively, stir and dissolve with deionized water.

[0055] 2. Dissolve 160 grams of zinc chloride in the above conductive saline solution.

[0056] 3. Use such as figure 1 In the shown electrolysis system device, the solution in the beaker is transferred to a large volume cylinder of 1L and then poured into a 1L plexiglass buffer tank 14 .

[0057] 4. Use a zinc sheet with a Zn99.99% content as an anode of 30×40mm, and a 30×40mm polished pure aluminum sheet as a cathode, and turn on a 0.02A direct current to electrolyze the above electrolyte for 1 hour.

[0058] 5. Use a peristaltic pump to inject the electrolytic solution after low-current electrolysis treatment into the 300mL glass electrolytic cell 1, use RuTi-coated DSA anode 40×60mm, use Zn99.99% zinc sheet cathode 40×60mm, and control the electrode distance to 4cm , Through 2A DC current electrolysis.

[0059] 6. After 1 hour of elect...

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PUM

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Abstract

The invention discloses a method for obtaining recyclable chlorine and high-purity metallic zinc by electrolyzing zinc chloride in an aqueous solution system; in the method, an anode is an RuTi coated electrode with low chlorine over-potential; a cathode is a polished aluminium electrode or a pure zinc sheet; electrolyte is a zinc chloride aqueous solution system added with proper sodium chloride and ammonium chloride as conductive salt; and deposition zinc, the Zn content of which is over 99.99%, can be obtained by controlling a proper electrolytic condition. The method disclosed by the invention is applied to the processes for recycling zinc-containing waste zinc, and the cyclic utilization of zinc and chlorine is realized in the technology process of directly generating zinc chloride waste.

Description

technical field [0001] The invention relates to a method for recycling non-ferrous metal zinc and chlorine gas from zinc chloride by electrolysis. Background technique [0002] Zinc is a non-ferrous metal, ranking fourth in the earth's crustal metal reserves, and its appearance is silvery white. The zinc electrode potential is -0.7630, which ranks in front of hydrogen in the metal activity sequence table and belongs to active metals. Although zinc reserves are abundant, as a non-renewable resource, with the increase of zinc consumption, the recycling method of zinc has been paid more attention. [0003] The application of zinc is very extensive. Galvanizing on metal products can slow down the rate of metal oxidation and corrosion; by hot-dip plating materials and products that need protection in molten metal tanks, zinc can be used for corrosion protection. In the galvanizing industry, generally Chloride galvanizing is used, and the electroplating wastewater and plating so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/16
Inventor 张全生张耀平李鸿刘淑萍曹忠
Owner ORISI SILICON
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