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Method for producing electrolytic manganese metal by comprehensively utilizing electrolytic manganese residues

A technology of electrolytic manganese metal and electrolytic manganese slag, which is applied in the direction of cement production, manganese sulfate, process efficiency improvement, etc., can solve the problems of small manganese slag utilization and immature technology, reduce stockpiling, improve economic and social Benefits, the effect of reducing production costs

Inactive Publication Date: 2017-05-31
NINGXIA TIANYUAN MANGANESE LIMITED
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Problems solved by technology

The current treatment method uses a small amount of manganese slag and the process is not mature enough

Method used

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  • Method for producing electrolytic manganese metal by comprehensively utilizing electrolytic manganese residues
  • Method for producing electrolytic manganese metal by comprehensively utilizing electrolytic manganese residues
  • Method for producing electrolytic manganese metal by comprehensively utilizing electrolytic manganese residues

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Embodiment Construction

[0018] A method for comprehensively utilizing electrolytic manganese slag to produce electrolytic metal manganese comprises drying the electrolytic manganese metal slag and grinding coke at a ratio of 96% manganese slag+4% coke until the sieve residue on an 80 μm square hole sieve is ≤10%. Grind pyrolusite MnO2 to a fineness of 200 meshes, and make slurry with electrolytic anolyte. After the raw material after grinding is homogenized and qualified, it is sent to the preheater for waste heat to 600°C-700°C and then enters the rotary kiln for calcination. SO produced after calcination 2 After the reduction tower reacts with the pyrolusite pulp, the MnO in the pyrolusite pulp 2 and SO in calcination flue gas 2 Oxidation-reduction reactions occur to generate MnSO4 slurry. In the prepared MnSO 4 Add manganese in depth such as sulfur concentrate sand to the slurry. The slurry after deep manganese immersion is separated into solid and liquid by a plate filter press, and the sepa...

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Abstract

The invention discloses a method for producing the electrolytic manganese metal by comprehensively utilizing electrolytic manganese residues, and relates to improvement for a method for producing the manganese metal in a wet process electrolysis mode. The producing process comprises the steps that ore pulp is subjected to leaching and solid-liquid separation; a solid-liquid separated liquid is subjected to purification and electrolysis to produce electrolytic manganese; the electrolytic manganese residues are obtained through solid-liquid separation; according to the characteristic of the method, the electrolytic manganese residues are obtained after solid-liquid separation and subjected to calcination, and SO2 smoke generated during calcination of the electrolytic manganese residues are subjected to spraying and reduction and then used for manganese sulfate pulp preparation through ore pulp leaching; and the calcinated electrolytic manganese residues are used for production of cement. According to the method, the electrolytic manganese residues are further treated, sulfur in the electrolytic manganese residues are effectively recovered, the production cost of the electrolytic manganese is lowered, the calcinated electrolytic manganese residues have activity and can serve as a raw material for production of building materials, stockpiling of solid waste is reduced, damage of electrolytic manganese production to the environment is effectively reduced, and the production economic and social benefits are increased.

Description

technical field [0001] A method for producing electrolytic metal manganese by comprehensively utilizing electrolytic manganese slag relates to an improvement of a method for producing metal manganese by wet electrolysis. Background technique [0002] Manganese is an important metal element, which is widely used in industry. It is mainly used in the production of manganese steel, and it is also used in non-ferrous metals, chemical industry, medicine, food, analysis and scientific research. Manganese slag is the filtered acid slag produced by treating manganese ore with sulfuric acid in the electrolytic manganese production process. According to the different grades of manganese ore, the amount of manganese slag discharged per ton of electrolytic manganese is 3-10 tons, with an average of 5-6 tons. Since there is no mature treatment technology for manganese slag, most electrolytic manganese enterprises in my country transport waste slag to storage yards and build dams for wet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/08C22B47/00C25C1/10C01G45/10C04B7/147
CPCC22B3/08C22B47/00C25C1/10C01G45/10C04B7/147Y02P40/10Y02P10/20
Inventor 贾天将杨正有杨静宁宋正平毛俊健张志华
Owner NINGXIA TIANYUAN MANGANESE LIMITED
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