Process for producing manganese compound and potassium sulfate from material comprising potassium and manganese

摘要

The present invention is of high purity and high purity manganese compounds from low-purity manganese sulfate and potassium-containing water It relates to a process for the production of potassium. Method for manufacturing a high-purity manganese compounds and manganese and potassium sulfate from the low-purity water according to the present invention containing potassium has a first leachate and potassium contained in the water after the addition of water containing low-purity manganese and potassium is potassium through the first solid-liquid separation and separating a first solid; Was added potassium sulfide in the first leachate is removed and the first impurity, the method comprising the steps of: preparing a high-purity potassium sulfate by using sulfuric acid; The first solid was calcined by the addition of sulfuric acid to remove the second impurity by at least one of calcium hydroxide and sulfide is converted to sulfuric acid and manganese, and obtaining a manganese leachate through the second solid-liquid separation; And a step for producing a high-purity manganese from the manganese compound leachate. This can be produced economically low purity manganese compound and a potassium-containing high-purity manganese (manganese sulfate monohydrate from the water, broken sasanhwasam the needs and EMM (Electronic Manganese Metal) and a high purity potassium sulfate at the same time through a single process by. ;