ROLLING METHOD OF SILICA-TITANIC CONCENTRATES Russian patent published in 2010 - IPC C22B34/12 C22B1/08 C01B33/00 

FIELD: metallurgy.

SUBSTANCE: method is implemented by means of chlorination with carbonaceous reducing agent. Additionally initial silica-titanium concentrate with content of titanium dioxide 45-68% and silicon dioxide 25-50% is prepared, mixing with carbonaceous reducing agent in its weight ratio (2-4):1, it is provided uniformity of charge by means of preliminary selection of concentrate and reducing agent size. The charge is subject to thermal treatment or treatment in field of high-temperature arc plasma in reducing environment up to initial stage carbidation of silicon oxide. Chlorination is implemented at temperature 700-1200°C with receiving of tetrachlorides of titanium and silicon, it is divided and cleaned them for following treatment into metals, metal oxides and other compositions of particular elements with return of circulating chlorine to chlorination.

EFFECT: reduction of power inputs at total extraction from reacting mass of silica - titanic concentrates of two available components in the form of tetrachlorides of titanium and silicon, herewith it is provided essential reduction of harmful wastes.

2 dwg