Environmental Control Measures in Sponge Iron Industry ...
In coal based sponge iron technology, the furnace (rotary kiln) fulfils various functions. It is used as a conveying, mixing and charring unit, as a heat exchanger and as a reactor for coal gasification and iron ore reduction. In coal based sponge iron kilns, depending on the quality of reductant (coal) used, about 60% of the total heat input ...