METHOD FOR CONTROLLING FORMATION OF STRONG ALKALINE STEEL-MAKING SLAG DISSOLUTION WATER

摘要

PURPOSE: Provided is a method for inhibiting strong alkali leachate generation from iron works slag by coating slag with a specified grain size with silica. CONSTITUTION: The method comprises the steps of (a) introducing iron works slag with grain size no greater than 20 mm into water glass containing 4 to 8 wt.% of SiO2, and (b) keeping the slag in the water glass with pH 8 to 10 for at least 30 minutes, thereby coating silica on the surface of the slag.