
Sponge iron making process - SlideShare
Nov 09, 2014· Making process iron ore to sponge iron. ... Sponge iron making process 1. ... AIR Secondary air is introduced axially in the direction of the gas flow The air supplied to the length of the kiln is metered for close control of temperature and gas atmosphere in the kiln Heating zone extends from 25% to 40% along length of the kiln and in the ...