用废盐酸从改性高钛渣中浸出钛的试验研究

摘要

The titanium slag was roasted at high temperature with modifier .The roasted slag was leached using waste hydrochloric acid at normal atmosphere .The influence of hydrochloric acid concentration ,temperature ,reaction time and liquid-solid ratio on leaching of titanium from the roasted slag were examined .The results show that the optimum leaching conditions are that hydrochloric acid concentration is 3 .6 mol/L ,temperature is 70℃ ,reaction time is 3 h ,liquid-solid ratio is 5∶1 ,and the slag particle size is 200 mesh which is roasted for 2 h at 850 ℃ with modifier .The leaching of titanium is 95 .5% at the optimum conditions .%研究了在常温常压下用废盐酸从高温焙烧改性的高钛渣中浸出钛，考察了废盐酸质量浓度、温度、反应时间、液固体积质量比对钛浸出率的影响。试验结果表明：改性剂与高钛渣质量比为0．7∶1，在850℃下焙烧3h对高钛渣进行改性，然后用浓度为3．6mol/L的废盐酸在温度70℃下搅拌浸出3h，控制液固体积质量比为5∶1，钛浸出率为95．5％，浸出效果较好。