Method for producing high purity manganous-manganic oxide with little iron and chromium

Abstract

High purity electrolytic metal manganese sheet is used as a raw material, and a non iron or chromium base pressure-resistant and wear-resistant material, such as a pressure-resistant ceramic is used as a pressure roller of a roller mill. The electrolytic metal manganese sheet is fragmented into electrolytic metal manganese powder, sieved through a copper screen to obtain electrolytic metal manganese powder with a fineness of -140 mesh or -160 mesh, and put into a reaction tank together with water in a ratio of 1:6 for reaction. The reaction tank employs a non iron or chromium base anti-corrosion and wear-resistant material, such as epoxy resin, rubber and titanium, etc., as an inner liner non iron or chromium base anti-corrosion and wear-resistant material, such as epoxy resin, rubber and titanium, etc., and a stirring slurry of the reaction tank is coated with a non iron or chromium base anti-corrosion and wear-resistant material, such as epoxy resin, rubber and titanium, etc. after the reaction, high purity manganous-manganic oxide with little iron and chromium can be obtained, wherein an iron content is not greater than 0.02%, and a chromium content not greater than 0.001%.

Description

Technical field: [0001] The invention belongs to the technical field of chemical production, and in particular relates to a method for producing high-purity trimanganese tetraoxide with low iron and low chromium. Background technique: [0002] With the development of electronic technology, the requirements for the purity of high-purity manganese tetraoxide, the raw material for the production of manganese-zinc ferrite, are getting higher and higher. The lower the content of iron and chromium in high-purity manganese tetraoxide, the better. Due to the limitation of process equipment, at present, the performance index of high-purity manganese tetraoxide with low iron and low chromium is 0.04% iron and 0.02% chromium, which cannot reach iron less than 0.02% and chromium less than 0.001%, which limits manganese, zinc and iron oxide. Improvement of body performance. Invention content: [0003] In order to overcome the deficiency of high iron and chromium content in high-purity...

AI Technical Summary

Problems solved by technology

[0002] With the development of electronic technology, the requirements for the purity of high-purity manganese tetraoxide, the raw material for the production of manganese-zinc ferrite, are getting higher and higher. The lower the content of iron and chromium in high-purity manganese tetraoxide, the better. Due to the limitation of process equipment, at present, the performance index of high-purity manganese tetraoxide with low iron and low chromium is 0.04% iron and 0.02% chromium, which cannot reach iron less than 0.02% and chromium less than 0.001%, which limits manganese, zinc and iron oxide. improved body performance