Method for environmentally friendly and efficiently producing electrolytic manganese metal

An electrolytic manganese metal, high-efficiency technology, applied in photography technology, instruments, photography auxiliary technology and other directions, can solve the problems of unstable electrolysis process, low electrolysis efficiency, inconvenient use, etc., to achieve stable electrolysis process, high electrolysis efficiency, and reduce difficulty. and cost effects

Active Publication Date: 2013-06-26
云南江南锰业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The invention provides an environmentally friendly and efficient method for producing electrolytic manganese metal, aiming to solve the serious environmental pollution of various additives used in the production of electrolytic manganese metal provided by the prior art, or the

Method used

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  • Method for environmentally friendly and efficiently producing electrolytic manganese metal
  • Method for environmentally friendly and efficiently producing electrolytic manganese metal
  • Method for environmentally friendly and efficiently producing electrolytic manganese metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The above-mentioned polymer (m=1, number average molecular weight 8000) was used as an additive, and the content of the additive in the electrolyte solution was 35 mg / L.

[0036] 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 .

[0037] The production test in the electrolytic mang...

Embodiment 2

[0039] The above polymer (m=1, number average molecular weight 60,000) was used as an additive, and the content of the additive in the electrolyte solution was 20 mg / L.

[0040] 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 .

[0041] Tested in the electrolytic manganese plant, the elec...

Embodiment 3

[0043] The above-mentioned polymer (m=0, number average molecular weight 35,000) was used as an additive, and the content of the additive in the electrolyte solution was 15 mg / L.

[0044] 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 .

[0045] The electrolytic manganese factory conduct...

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Abstract

The invention belongs to the technical field of chemical production and provides a method for efficiently producing electrolytic manganese metal in an environment-friendly manner. The method provided by the invention takes a vinyl polymer hooked with a thiourea side group as an electrolysis additive, and the electrolysis additive is added into electrolyte containing manganese sulphate and ammonium sulphate for the production of electrolytic manganese, wherein the content of the electrolysis additive in the electrolyte is controlled to be 10-120mg/L. The electrolysis additive is an environment-friendly and non-toxic polymer and can be used for replacing the existing widely applied poisonous or pollutional selenium dioxide and sulphur dioxide; the electrolysis additive is low in solubility and cannot be accumulated in the electrolyte, a production process operation is simple, manganese metal electrolysis efficiency is high, the product purity is high, an electrolysis process is stable, purity requirement to the electrolyte is lower, and electrolytic manganese metal production difficulty and cost are reduced, so that the method provided by the invention has higher popularization and application values.

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. Background technique [0002] Manganese metal has a wide range of uses, and has been successfully and widely used in iron and steel smelting, nonferrous metallurgy, electronic technology, chemical industry, environmental protection, food hygiene, welding electrode industry, aerospace industry and other fields. Since electrolytic manganese metal entered China as a metallurgical product in 1956, after half a century of development, China has become the largest producer, consumer and exporter of electrolytic manganese in the world. [0003] In 1923, A.J.All Mand and A.N.Cambell in the United Kingdom used ceramic diaphragm electrolysis to electrolyze metal manganese. However, it was not until the mid-1940s that an additive suitable for electrolytic manganese was found, so ...

Claims

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Application Information

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IPC IPC(8): C25C1/10
Inventor 陈上吴显明刘伟
Owner 云南江南锰业股份有限公司
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