等离子炉碳(氮)化处理高钛高炉渣

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

摘要: 用氮等离子体对高钛渣进行碳(氮)化处理,在1700℃下停留1h,可使渣中钛的碳(氮)化转化率达92%,大于20μm的Ti(C,N)晶粒约40%。用重选方法选别碳化渣可得到含Ti(C,N)50%以上的精矿,钛的回收率可达90%以上。

Abstract: 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%.