Electrolytic manganese dioxide powder rinsing and drying process and crushing and drying device

• Main Authors: YE YOUMING, LUO BING, QIN LILI, TU ZHONGYI, LIAO ZHENGDA, XIN FENG
• Format: Patent
• Language: Chinese; English
• Published: 17.06.2022
• Subjects: BLASTING; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; DRYING; DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM; HEATING; INORGANIC CHEMISTRY; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; MILLING GRAIN; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; TRANSPORTING; WEAPONS

The invention relates to the field of electrolytic manganese dioxide production, in particular to an electrolytic manganese dioxide powder rinsing and drying process which comprises the steps of hot water acid washing, grinding, powder alkali washing, acid washing, water washing, filter pressing and drying, iron removal and the like, and further discloses an electrolytic manganese dioxide powder smashing and drying device which comprises a drying cylinder with an air inlet and an air outlet. The crushing system is provided with a crushing rotor, and the feeder is provided with double screws. Manganese dioxide fragments are subjected to multiple times of rinsing and powder alkali washing through hot water to remove sulfate radicals on the surface and inside of manganese dioxide, and calcium and magnesium substances in manganese dioxide powder are removed through powder acid washing, so that the purity of manganese dioxide is improved; and moreover, the phenomenon that the materials are bonded and are held in a