TECHNOLOGICAL POSSIBILITIES FOR THE UTILIZATION OF IRON-CONTAINING WASTE FROM METALLURGICAL INDUSTRIES

Abstract

The study presents the possibilities for processing iron-containing waste from metallurgical production. The raw material for the experiments was obtained from the tailing’s storage of a metallurgical plant in Bulgaria with the aim of obtaining a product that can be used as a raw material in blast furnace production. The test is performed in a rotary kiln at 1150°C, 1100°C, 1050°C in the presence of a reducer. Three different iron ore pellets and additionally coal grits were the raw materials for the direct reduction process. During the provided experiments, the main technological parameters of the reduction process were established, such as temperature, process time, pressure in the furnace and the composition of the exit gases from the process. Marketable iron - containing pellets were obtained and tested.