Waste heat recovery from the Exhaust gases of Sponge iron kilns

摘要

Electrical energy is a major contributor to the overall manufacturing cost in steel making, and its conservation is of prime importance. Sponge iron making involves the separation of iron from iron ore by reduction in a kiln at appropriate temperature and pressure. Direct reduction is defined as a process used to make solid iron products from ore or pellets using natural gas or a coal-based reductant. The process reaction/steps are carried out in a rotary kiln with iron ore and non cocking coal as prime raw materials in requisite proportions along with a little quantity of dolomite acting as a desulphuriser.