PROCESS FOR THE REDUCTION ROASTING OF MANGANESE ORES AND A DEVICE THEREFOR

摘要

In comparison to the conventional processes of reductionroasting of manganese ores, the invented process replaces theexpensive petroleum based reductant injected with air by cheapsolid carbonaceous material and sealing of air entry.Here the bed formed by a mixture of manganese ore andreductant on a stationary or moving grate is ignited on the topand then sealed while maintaining suction below the grate, forcingthe reductant to draw oxygen from the ore itself for combustioncausing total reduction.