Effects of anthracite replacing coke breeze on iron oresintering

Abstract

Anthracite coal as fuel for iron ore sintering is compared withcoke breeze. Anthracite is lower in porosity, higher in density, andslower in combustion rate. With higher proportion of anthracite infuel, permeability of sinter bed tends to decrease resulting in lowersinter productivity. Higher fuel rate with more replacement of cokebreeze by anthracite is ascribed to the lower density of heat sourceparticles and to the lower heat value and more volatile matters ofanthracite. A smaller particle size for anthracite is recommended.Some subsidiary heat sources such as magnetite ore and mill scalecould be helpful for more uniform sintering.