Brand new method of producing electrolytic manganese metal

Abstract

The invention discloses a brand new method of producing electrolytic manganese metal. The method comprises the following steps: (1) grinding lean manganese ore powder, adding an anode liquor of electrolytic manganese and then adding the anode liquor of electrolytic manganese to be reacted with sulfuric acid to obtain a reaction leachate; (2) carrying out press filtering on the reaction leachate so as to remove slags, adding SDD (Sodium Dimethyl Dithiocarbamate) to remove impurites, introducing oxygen to oxidize, then adding manganese hydroxide to react, supplementing ammonium water to neutralize, and then adding a vulcanizing agent to further remove impurities; (3) after further carrying out press filtering so as to slags, carrying out deep purification and press filtering so as to remove slags, standing and metering to obtain an electrolyte; (4) electrolyzing the electrolyte to obtain the electrolytic manganese metal, wherein the anode liquor of electrolytic manganese is recycled. The invention further discloses a method of producing electrolytic manganese metal by fully replacing manganese ores by manganese hydroxide. The two methods disclosed by the invention can be used for improving the manganese leaching efficiency, saving the use level of auxiliary materials, lowering the production cost, simplifying the production flow and reducing the amount of waste residues, is free from influence on electrolysis and is mature, simple and practical in process.

Description

technical field [0001] The invention relates to a completely new method for producing electrolytic manganese metal. Background technique [0002] At present, the production of electrolytic manganese metal often uses manganese carbonate ore as the main raw material, and electrolytic metal manganese products are obtained through leaching, compounding, neutralization, oxidation, purification and electrolysis. However, as the existing manganese ore resources are becoming more and more scarce and the manganese grade is getting lower and lower, the production of electrolytic manganese metal is more difficult and the cost is higher; the market competition of electrolytic manganese metal is fierce, and the profit margin is getting smaller and smaller; in the process of electrolytic manganese metal A large amount of harmful waste press filter residues are produced, causing great harm and hidden dangers to the environment and groundwater pollution. Contents of the invention [0003...

AI Technical Summary

Problems solved by technology

However, as the existing manganese ore resources are becoming more and more scarce and the manganese grade is getting lower and lower, the production of electrolytic manganese metal is more difficult and the cost is higher; the market competition of electrolytic manganese metal is fierce, and the profit margin is getting smaller and smaller; in the process of electrolytic manganese metal A large amount of harmful waste press filter residues are produced, causing great harm and hidden dangers to the environment and groundwater pollution

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