Method for producing electrolytic manganese metal by replacing partial ammonia water with manganese dregs for neutralization deironing

Abstract

The invention discloses a method for producing electrolytic manganese metals by utilizing manganese residues to replace partial ammonia water for neutralization deferrization, which resolves the problems existing in western Liaoning that in the process of producing electrolytic manganese metals, because the iron content of manganese ores in western Liaoning is high, more acid leach is needed in order to achieve better yield, but in the process of neutralization, the consumption of ammonia water is too big to ensure the ammonia balance of a system. The method comprises the processes of leaching, chemical combination, purification, electrolysis and post treatment, etc., wherein during the process of leaching and chemical combination, the manganese carbonate ore powders, the manganese dioxide ore powers, the sulfuric acids and the ammonia water are used as raw materials; the method is characterized in that the manganese residues are added to replace partial ammonia water for neutralization deferrization. The method resolves the problem of the ammonia balance in the process of producing electrolytic manganese metals by western Liaoning carbonic acid manganese ores, and side products-manganese residues which are generated along with the production of manganese in our company are fully utilized, thereby saves the consumption of manganese ores, improving the recover rate of manganese, simultaneously saving the consumption of ammonia water and lowering product cost.

Description

Method for producing electrolytic metal manganese by using manganese slag to replace part of ammonia and remove iron technical field The invention belongs to the technical field of electrolytic manganese metal, and particularly relates to a method for producing electrolytic manganese metal by neutralizing and removing iron in ammonia water in the compound leaching process. Background technique At present, the production of electrolytic manganese metal in China uses manganese carbonate ore as the main raw material, and the products are obtained through processes such as leaching, compounding, purification, electrolysis, and post-treatment. During the compounding process, anolyte sufficient to wet the materials is added to the reactor, manganese carbonate ore powder, manganese dioxide ore powder, sulfuric acid and ammonia water are used as raw materials for manganese leaching reaction, and ammonia water is used as a neutralizer to remove iron. Our company is located in weste...

AI Technical Summary

Problems solved by technology

In order to solve the problem of ammonia stability in the production system, and at the same time solve the problem of large amount of ammonia added and high cost, the following technical solutions are proposed