ABSTRACT
The paper presents the results of studies carried out under pilot scale conditions on the production of ferrovanadium by the electro-aluminothermic method from chemically enriched vanadium-containing wastes with reduction of oxides in the slag layer. Carrying out the reduction process in the slag layer allows the intensity of the process to be controlled and produces a ferroalloy with a vanadium content of 40 to 80%. The electroslag process allows better separation of the smelting products and has significant potential for using various man-made wastes in the feed to reduce costs. During the research, crucibles with different linings were tested and the most efficient electrical modes were determined. The power source for the melting unit was a DC welding transformer. It was carried out experiments with different polarity of the power supply. As a result, a technology was adapted to produce a ferroalloy with a vanadium content of 50-60% based on the use of technogenic waste for electrode production. In pilot melts the recovery of vanadium in metal was 85-90%. The technology ensures high product quality and the possibility of waste-free production. The investment component in equipment for this process is relatively low.
