含钛高炉渣钛提取中酸解率影响因素的研究

采用硫酸法对含钛高炉渣进行钛提取，对影响含钛高炉渣酸解率的因素进行了实验室研究，确定了最佳工艺参数。结果表明，影响酸解率最重要的因素为酸浓度、酸渣比和反应时间；在含钛高炉渣细度300目、酸渣比（1.8~2.2）∶1，硫酸浓度85%，反应时间40 min，熟化温度160 ℃，熟化时间4 h，浸取浓度50 g/L，浸取时间8 h，浸取温度50 ℃的条件下，酸解率在85%以上，并可得到总钛浓度50 g/L以上的合格钛液。对钛液进行水解、水解产物经煅烧后得到的TiO₂其品位超过了98%。

Factors Influencing the Acidolysis Ratio of Titanium Extraction from Titanium-bearing Blast Furnace Slag

Titanium extraction from titanium-bearing blast furnace slag was made by sulfuric acid process.The factors influencing the acidolysis ratio of titanium extraction were studied and the optimal process parameters were determined.The results indicate that the most important factors influencing the Acidolysis ration are acid concentration, acid/slag ratio and reaction time.Under the conditions of the titanium bearing blast furnace slag particle size of 300 mesh, acid/slag ratio of （1.8~2.2）∶1,sulfuric acid concentration of 85%, reaction time of 40 min, aging temperature of 160 ℃, aging time of 4 h, leaching concentration of 50 g/L, leaching time of 8 h, leaching temperature of 50 ℃, the acidolysis ratio was above 85% and a qualified titaniferous solution with a total TiO₂ content of 50 g/L was obtained.The TiO2 content in the product made from the titaniferous solution by hydrolysis and calcination was over 98%.