Method for producing electrolytic metal manganese and application thereof

Abstract

The invention relates to a method for producing electrolytic metal manganese and application thereof. The method comprises the following steps of: leaching, namely adding electrolytic manganese anolyte into a combining tank, stirring, and testing and analyzing the content of Mn<2+> and H<+> in the electrolytic manganese anolyte; adding sulfuric acid, adding water quenching residue and a manganese dioxide ore, and introducing steam for heating in the feeding process; neutralizing, namely when the concentration of Fe<2+> in feed liquor is less than or equal to 0.001g/l, introducing ammonia water into the feed liquor for neutralizing; standing, namely performing pressure filtration on the feed liquor, adding into a standing pool, detecting the feed liquor, and determining that the feed liquor is qualified liquor when the concentration of manganese is 30 to 35g/l, the concentration of ammonium sulfate is 110 to 115g/l, the pH value is 6.0 to 7.0, sigma Fe is less than or equal to 0.001g/l and the concentration of Co, Ni and Zn is less than or equal to 0.001g/l in the feed liquor; and electrolyzing to obtain qualified electrolytic metal manganese. In the method for producing the electrolytic metal manganese, the water quenching residue is taken as a manganese source. The method has the advantages that: production cost is low; the mineral source for producing the electrolytic metal manganese is expanded; the leached feed liquor is not required to be purified, so that the production period can be shortened by 3 to 4 hours; and the total content of the manganese in leaching residue can be controlled to be below 3 percent.

Description

A kind of method and application of producing electrolytic metal manganese technical field The invention relates to a method and application for producing electrolytic metal manganese. Background technique Electrolytic manganese is mainly used in iron and steel and non-ferrous alloys as a purifier, deoxidizer and alloy additive, especially the production of stainless steel with manganese as a substitute for nickel has increased the demand for electrolytic manganese. In recent years, with the development of my country's stainless steel industry, the electrolytic manganese industry It is developing rapidly in our country. At present, the main method of producing electrolytic manganese metal in my country is to use manganese carbonate ore or sintered manganese ore as the main ore, and use manganese dioxide ore to remove iron to produce electrolytic manganese metal. Due to the limited resources of domestic manganese carbonate ore, and the grade is decreasing year by year, it...

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Problems solved by technology

The output of waste slag remaining after smelting silicon-manganese alloys in our country is huge. At present, the method of direct stacki