Apparatus for the processing of slag

Abstract

Apparatus for processing slag, which is quenched in a liquid-containing vessel, has a forwardly and upwardly sloping chute receiving batches of quenched slag through the medium of a first pusher which is reciprocable along the bottom of the vessel whereby the chute accumulates a column of slag which overflows at the discharge end of the chute. The overflowing slag descends onto the upper side of a first forwardly and upwardly inclined bottom wall in front of a second reciprocable pusher which performs a forward stroke when the first pusher performs a return stroke and vice versa. The second pusher spreads and advances the slag toward and beyond the discharge end of the first bottom wall so that the slag descends onto a second bottom wall which is swept by a third reciprocable pusher. Liquid which is entrained by slag leaving the quenching vessel is permitted to flow rearwardly and downwardly along the bottom of the chute as well as along the two bottom walls so that the material which overflows the second bottom wall is practically free of liquid. Smaller particles of slag which remain entrapped in the liquid descend onto the second bottom wall and are swept rearwardly and downwardly by one or more scrapers which are reciprocated by the third pusher and are lifted off the second bottom wall during forward movement of the third pusher.