rotary kiln process of making sponge iron
rotary kiln process of making sponge iron DRI, also known as sponge iron, is the product of reducing iron oxide in the form of iron ore and steel plant wastes into metallic iron, below the melting point of iron and typically in the range of 800–1200 °C. Iron oxide is charged intoshaft furnace, rotary kiln, or fluidized beds