Analysis and Prospect of Waste Heat Utilization from Blast Furnace Slag Flushing

Abstract

Estimating the residual heat of blast furnace slag flushing in China, classifying and introducing the current proposed methods of slag flushing waste heat utilization, and listing existing cases. In order to better save energy and water in the slag flushing process of blast furnaces, an ideal comprehensive cascade utilization system scheme for annual recovery of waste heat is proposed. Based on the measured waste heat data of a steel plant, design calculations are carried out to further analyze the economic feasibility of the new scheme and provide reference for its promotion and application.