Establishing patterns of the structural-phase trans-formations during the re-duction of tungsten-containing ore concentrate with carbon

Abstract

The increased demand for steel, doped with refractory elements, corresponds to modern trends of the steel industry. Given that the raw materials deposits are gradually depleted, prices in the world market for refractory elements tend to grow [1]. These elements include tungsten.The quality and cost of production determine the main indicators of competitiveness in the domestic and global markets [2]. Conventional technologies of aluminum-ther mal and carbon-silicon-thermal smelting are being replaced by powder technologies for obtaining doping materials through direct reduction of ore concentrates, including carbonaceous reducers. At the same time, the possibilities of improving the technological parameters are far from ex-hausted, which makes it appropriate and relevant to conduct further research.The relevance of work in this area is to determine the manufacturing parameters required to increase the degree of assimilation of tungsten and to contribute to resource-saving in the processing and utilization of tung-sten ore concentrates. To resolve a given issue, it is nec-essary to study the features of the processes of tungsten ore concentrate reduction at different charge composition while investigating the accompanying phase and structural transformations.