Carbonization (Nitrogenation) for Titanium-Bearing Blast Furnace Slag by Plasma Furnace
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摘要: 用氮等離子體對高鈦渣進行碳(氮)化處理,在1700℃下停留1h,可使渣中鈦的碳(氮)化轉化率達92%,大于20μm的Ti(C,N)晶粒約40%。用重選方法選別碳化渣可得到含Ti(C,N)50%以上的精礦,鈦的回收率可達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%.
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Key words:
- plasma furnaces /
- titanium slags /
- blast furnaces, carbonization
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