Progress and Prospect of Industrialization of Comprehensive Utilization of Pangang Blast Furnace Slag(High Titanium Content)

Years of research on the comprehensive utilization of Pangang blast furnace slag(BF slag) is reviewed,and the progress in laboratorial and industrial technologies for titanium tetrachloride production by "high-temperature carbonization and low-temperature chlorination" from high titanium content BF slag.At present,the 10kt/a titanium tetrachloride production line employing "high-temperature carbonization and low-temperature chlorination" technology is capable of continuous production.In stability tests and trial production,the average carbonation rate of dioxide titanium in blast furnace slag was 88.20% in the high-temperature carbonization pilot line,the average chlorination rate of carbide titanium in carbonization slag was 85.35% in the low-temperature chlorination line,and the total recovery rate of titanium in BF slag in these two lines reached 75.45%.The test result shows that the process with significant economic and social benefits is feasible in technology,indicating an optimistic prospect in industrialization.