Separation smelting of magnetic concentrate in complex processing of steel slag

The recycling and reuse of large-tonnage industrial by-products are of growing importance due to their considerable resource potential. For metallurgical slags, selecting an optimal stabilization technology is crucial for improving economic efficiency by enabling recovery of metallized fractions for reuse and minimizing slag disposal. This study evaluates the effects of different stabilizers on the composition and yield of metal recovered during crystal-chemical slag stabilization. Results indicate that electric arc furnace (EAF) dust is the most effective stabilizer. Specifically, EAF dust — a waste product from JSC Oskol Electrometallurgical Plant named after A. A. Ugarov (OEMP), alongside steelmaking slag — facilitates in-process slag stabilization within the production cycle. Compared to ferroboron, EAF dust enhances recovery of metallized material from slag for reuse in steelmaking, thereby reducing ore consumption. Using EAF dust as a stabilizing agent in crystal-chemical stabilization can yield up to 47 % metal suitable for reuse, characterized as low-carbon steel with moderate impurity levels. The study was carried out under the grant issued by the Russian Science Foundation No. 23-19-00796 (https://rscf.ru/project/23-19-00796/) using the equipment of the Center for High Technologies based on of the Belgorod State Technological University named after V. G. Shukhov.