PURIFIED SOLUTION CONTAINING IRON AND MANGANESE AND PRODUCTION THEREOF

摘要

PURPOSE:To enable the use of a soln. contg. iron chloride and manganese chloride as starting material for producing high quality soft ferrite by specifying the Mn and P contents of the soln. CONSTITUTION:The Mn content of a soln. contg. iron chloride and manganese chloride is regulated to >0.45wt.% of the total amt. of Fe and Mn and the P content to <=0.007wt.% of the total amt. of Fe and Mn to obtain a purified soln. contg. Fe and Mn. This purified soln. is produced by subjecting a crude soln. contg. iron chloride, manganese chloride and P to oxidation treatment with an oxidizing agent such as nitric acid, adjusting the pH of the soln. to >=2, separating and removing the P as a precipitate. The crude soln. may be prepd. by dissolving ferromanganese in hydrochloric acid.