Carbonization (Nitrogenation) for Titanium-Bearing Blast Furnace Slag by Plasma Furnace

Titanium-bearing blast furnace slag is carbonised in the nitrogen plasma. With the sample of slag held for 1h in the plasma furnace at 1700℃, 92% TiO₂ in the slag can be transformed into TiC(N) and the diameter of 40% TiC(N) crystalline is more than 20 μm. Carbonized slag is separated by weight-dressing. As a result, the concentrate is obtained which contains TiC(N) of more than 50%, and the recovery rate of titanium can be more than 90%.