Recycling and Disposal of Industrial Waste from Metallurgical Production

Abstract

A range of process solutions in the field of industrial waste recycling was reviewed. A technology was suggested for red muds disposal in aluminium industry by their introduction into iron-ore agglomerates and pellets. The comprehensive waste-free technology was considered for the red muds recycling with the use of rotary and ore thermal furnaces and obtaining of cast iron (ferrosilicon) and alumocalcite slag for cement production. A variant of the joint recycling of two industrial wastes was suggested for red muds and greasy rolling mill scale. Efficiency of the comprehensive environmentally safe technology of vanadium-containing converter slags processing ensuring production of higher-purity vanadium pentoxine and manganiferous products was experimentally confirmed. A recycling technology for niobium-containing fumes at electron beam remelting was suggested with obtaining of ferroniobium or chemical niobium-containing concentrates. A method of exhausted transformer oil utilization in the blast-furnace process was justified with the method of thermodynamic modeling. The possibility to use the slags from the secondary aluminium production as the slag-forming materials at secondary refining was assessed.