abstract |
MAINING AFTER SEPARATION OF THE PRODUCT TO REGENERATE A BASE USED FOR PH CONTROL EARLIER IN THE PROCESS AND THE ACID USED IN THE LEACHING STEP. SYNTHETIC MANGANESE DIOXIDE IS PRODUCED BY LEACHING A MANGANESE DIOXIDE ORE WITH HYDROCHLORIC ACID IN THE PRESENCE OF MANGANESE CHLORIDE OR MAGNESIUM CHLORIDE, PRECIPITATING MANGANESE DIOXIDE USING CHLORINE LIBERATED IN THE LEACHING STEP, AND HYDROLYSING THE LIQUID PHASE RE- |