Method for preparing high-purity manganese from lean manganese ore

• Main Authors: PENG TIANJIAN, DONG XIONGWEN
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: APPARATUS THEREFOR; CHEMISTRY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; METALLURGY; PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS

According to the method, carbonate and bicarbonate are added to serve as neutralizers, meanwhile, obtained anolyte (containing manganese sulfate, sulfuric acid and ammonium sulfate) does not return to a solution preparation procedure, ammonia nitrogen is prevented from being introduced from the source, the effect that the leached manganese slag does not contain ammonia nitrogen is achieved, the treatment cost is greatly reduced, and the method is suitable for industrial production. The method can be directly used for building materials, such as brick making, cement making and the like by leaching manganese slag, and solves the problem that ammonia gas escapes and is difficult to treat when the slag is recycled in the traditional process. According to the method for preparing the high-purity manganese from the lean manganese ore, the sulfide slag obtained in the purification process is used for extracting nickel, cobalt, manganese and zinc elements, the problem that the manganese sulfide slag pollutes the envi