Heretofore low grade coal had hardly any metallurgical or other industrial applications. With depletion of coal reserve with high carbon content, attention was given to low grade coal but gainful mode of utilization was not forthcoming. The present invention has made a considerable advancement in this field and...

A METHOD OF CONTINUOUS MANUFACTURE OF SPONGE IORN IN A PORTED ROTARY KILN WHEREIN A CHARGE COMPRISING SIZED IRON ORE, ORE FINES, COAL AS FUEL AND REDUCTANT AND LIMESTONE/DOLOMITE ISFED CONTINUOUSLY INTO THE KILN FROM THE FEED END THEREOF, HAVING THE STEP OF REDUCTION OF ACCRETION AND FOULING OF AIR PIPE LINES AND PO...

The invention relates to an improved method of producing sponge iron by reduction ofiron ore fines by non cooking coal. More particularly this invention pertains to productionof sponge iron from iron ore fines generated in course of mining as well as sizing forproduction of sponge iron.