Production of Ferro Alloys from Wolframite Concentrate Using Pressure

Abstract

The temperature of aluminotermic processes changes largely depending on appointment, structure and property of received products. Optimum conditions steal up for each concrete process. One of important practical questions is influence of temperature and external pressure upon extraction of restored elements in an ingot. In work concentration and high-speed limits of burning of system WO3-Al are defined. Limits of burning of system (4.3 – 19.1 g/sm3) are established at dilute from 10 to 300% by a ballast. The factors influencing for speed of burning mixture from tungsten concentrate are investigated. Influence of superfluous pressure on fusion indicators is investigated at reception ferrotungsten from various raw materials. Modes of preparation of initial raw materials to process of fusion are defined and parametres of carrying out of process of reception ferrotungsten under pressure are established. It is shown that superfluous pressure does not shift balance of reaction of restoration of tungsten only suppresses disorder of a reacting mix and prevents ablation of a reacting mix that promotes increase in an exit of an alloy.