Method for environmentally-friendly and efficient production of electrolytic metal manganese and electrolytic additive

A technology for electrolysis of metal manganese and additives, which is applied in photography technology, instruments, photography auxiliary technology and other directions, can solve the problems of high electrolyte purity requirements, unstable electrolysis process, environmental pollution, etc.

Active Publication Date: 2016-05-25
湖南东方矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the above problems, the present invention provides an environmentally friendly and efficient method for producing electrolytic manganese metal and electrolytic additives. Problems such as instability, inconvenie...

Method used

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  • Method for environmentally-friendly and efficient production of electrolytic metal manganese and electrolytic additive
  • Method for environmentally-friendly and efficient production of electrolytic metal manganese and electrolytic additive
  • Method for environmentally-friendly and efficient production of electrolytic metal manganese and electrolytic additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The above-mentioned polymer PNVI (number average molecular weight: 23,000) was used as an additive, and the content of the additive in the electrolyte solution was 1 mg / L.

[0054] This additive for high-efficiency production of selenium-free electrolytic manganese can be directly used in existing SeO 2 or SO 2 Application on the electrolysis production equipment as additive, use the production process condition of the present invention to be (1) electrolytic solution replenishment processing section: qualified solution requires manganese content to be 32-38g / L, ammonium sulfate content at 90-110g / L, pH control At 6.5-6.8. (2) Electrolysis section: the manganese content in the electrolytic cell is required to be 15-20g / L, the ammonium sulfate content to be 90-110g / L, and the pH to be controlled at 7.5-8.0. The bath temperature is 38-50°C; the electrolysis cycle is 24 hours, and the current density is 350-450A / m 2 .

[0055] The production test in the electrolytic ma...

Embodiment 2

[0057] The above-mentioned polymer PNVI (number average molecular weight 9,000) was used as an additive, and the content of the additive in the electrolyte was 40 mg / L.

[0058] This additive for high-efficiency production of selenium-free electrolytic manganese can be directly used in existing SeO 2 or SO 2 Application on the electrolysis production equipment as additive, use the production process condition of the present invention to be (1) electrolytic solution replenishment processing section: qualified solution requires manganese content to be 32-38g / L, ammonium sulfate content at 90-110g / L, pH control At 6.5-6.8. (2) Electrolysis section: the manganese content in the electrolytic cell is required to be 15-20g / L, the ammonium sulfate content to be 90-110g / L, and the pH to be controlled at 7.5-8.0. The bath temperature is 38-50°C; the electrolysis cycle is 24 hours, and the current density is 350-400A / m 2 .

[0059] Tested in the electrolytic manganese factory, the el...

Embodiment 3

[0061] The above-mentioned polymer PNVI-PA (number average molecular weight: 38,000) was used as an additive, and the content of the additive in the electrolyte solution was 2 mg / L.

[0062] This additive for high-efficiency production of selenium-free electrolytic manganese can be directly used in existing SeO 2 or SO 2 Application on the electrolysis production equipment as additive, use the production process condition of the present invention to be (1) electrolytic solution replenishment processing section: qualified solution requires manganese content to be 32-38g / L, ammonium sulfate content at 90-110g / L, pH control At 6.5-6.8. (2) Electrolysis section: the manganese content in the electrolytic cell is required to be 15-20g / L, the ammonium sulfate content to be 90-110g / L, and the pH to be controlled at 7.5-8.0. The bath temperature is 38-50°C; the electrolysis cycle is 24 hours, and the current density is 350-430A / m 2 .

[0063] The electrolytic manganese factory cond...

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Abstract

This invention belongs to the technical field of chemical production and provides a method for environmentally-friendly and efficient production of electrolytic metal manganese and an electrolytic additive. A poly N-vinyl imidazole and N-vinyl imidazole-acrylic copolymer is used as an electrolysis additive and is added to the electrolyte containing manganese sulfate and ammonium sulfate for electrolytic manganese production when being used, and the content of the electrolysis additive in the electrolyte is controlled to be 1 to 40 mg/L. The electrolysis additive is an environmentally-friendly non-toxic polymer, can be used for replacing currently and widely used toxic or pollution-carrying selenium dioxide and sulfur dioxide, is very small in solubility, does not accumulate in the electrolyte and is simple to operate in the production process, the metal manganese electrolysis efficiency is high, the product purity is high, the electrolytic process is stable, the purity requirement for the electrolyte is lower, the difficulty and the cost of electrolytic metal manganese production are reduced, and the electrolytic metal manganese has higher promotion and application value.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to an environment-friendly and efficient method for producing electrolytic manganese metal and an electrolytic additive. Background technique [0002] Manganese metal has a wide range of uses and has been successfully and widely used in iron and steel smelting, non-ferrous metallurgy, electronic technology, chemical industry, environmental protection, food hygiene, welding electrode industry, aerospace industry and other fields. China is currently the world's largest electrolytic Manganese producing and consuming countries. [0003] In 1923, A.J.All Mand and A.N.Cambell in the United Kingdom used ceramic diaphragm electrolysis to electrolyze metal manganese. Since the reduction potential of manganese ions is lower than that of hydrogen ions, metal manganese cannot be reduced theoretically in aqueous solution. After adding appropriate additives, the surface s...

Claims

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Application Information

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IPC IPC(8): C25C1/10
CPCC25C1/10
Inventor 陈上
Owner 湖南东方矿业有限责任公司
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