MANG ANESE, MAN GANESE DIOXIDE, FERR OMAN .
operations used to produce concentrates include crushing, screening, washing, jigging, and tabling, as well as flotation, heavymedia, and highintensi ty magnetic Ferromanganese is made by smelting ore (which contains both iron and manganese) with coke and limestone, and silicomanganese is produced by smelting t he slag from standard