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Process Of Extracting Of Manganese Ore

The process of extracting manganese from carbonate ores containing the following ingredients MnCOs FeCO3 MgCO3 CaCO3 SiO2 A1203 which comprises calcining the ore to eliminate the carbonates sulphatiing the calcined product roasting the sulphatied product in the presence of air at approximately 6500 C. until the iron is oxidied into

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