ADDITIVE IN GRANULATING IRONMAKING RAW MATERIAL, AND GRANULAR MATERIAL FOR IRONMAKING RAW MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an additive in granulating an ironmaking raw material, which contributes to the production of pellet or sintered ore having high wet strength or baked strength.;SOLUTION: The additive in granulating the ironmaking raw material includes a rosin-based compound such as a modified rosin having a (poly)oxy alkylene chain, a polyalcohol ester of a rosin, and an alkaline salt compound of a rosin. The additive may further include a high-molecular compound having a (poly)oxy alkylene chain, a carboxyl group and/or a carboxylate group, and a polyamide polyamine chain, in its side chain.;COPYRIGHT: (C)2005,JPO&NCIPI