Experiment for Use of Bratsk Aluminum Plant Technogenic Waste as a Reducing Agent During Cast Iron Smelting

Abstract

The fundamental possibility of recycling fluorocarbon-containing waste generated in producing primary aluminum is demonstrated. Technogenic waste of electrolytic production may be used as raw material for other branches of industry, and, in particular, it may compete with oven coke in the steel industry. When using RUSAL Bratsk fluorocarbon-containing waste (carbon foam flotation tailings, gas cleaning slurry, and electric precipitator dust) as reducing agents, good metal extraction from iron-ore concentrates of Korshunovskii Mining and Enrichment Combine is achieved. Research results show that use of waste when smelting in a briquetted form (carbon content on average up to 55%) permits extraction of up to 94% iron, which is comparable with experience in the use of oven coke for cast iron production.