PREPARATION METHOD OF IRON-ORE MATERIAL IN FORM OF BRIQUETTES FOR DIRECT IRON REDUCTION PROCESS

摘要

FIELD: metallurgy.;SUBSTANCE: iron-ore material is mixed with 3-5% of clay; obtained mixture is treated with water solution of iron chloride with addition of enzyme in quantity providing production of mixture with humidity of 15-20%, pressed and dried. Mixture of 85-90 wt % of iron-mica-martite ore and 10-15 wt % of hydrohematite ore, which are enriched with screening, is used as iron-ore material.;EFFECT: invention will allow improving strength of obtained briquettes at maintaining high iron content.;3 cl, 3 ex