Progress and Prospect of Industrialization of Comprehensive Utilization of Pangang Blast Furnace Slag(High Titanium Content)
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摘要: 回顾了攀钢高炉渣综合利用多年来的攻关工作，介绍了高钛型高炉渣"高温碳化—低温氯化"制取四氯化钛工艺的实验室和产业化技术研究进展情况。目前，采用"高温碳化—低温氯化"工艺建成的10 kt/a四氯化钛生产线已具备连续生产的能力，其中，高温碳化中试线稳定试验和试生产期间高炉渣中二氧化钛的平均碳化率为88.20%，低温氯化中试线碳化渣中碳化钛的平均氯化率为85.35%，"高温碳化—低温氯化"全流程工艺高炉渣提钛总回收率达到75.45%。试验结果表明，该工艺技术可行，经济和社会效益显著，具有良好的产业化前景。Abstract: 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.
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