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采用加碱高温焙烧对硫酸法钛白粉产生的酸解渣进行预处理,再使用硫酸进行浸出。通过正交试验和单因素试验考察了反应时间、液固比、搅拌转速、硫酸浓度和浸出温度对钛浸出率的影响。结果表明,影响钛浸出率大小的因素依次为反应时间、液固比、搅拌转速、硫酸浓度、浸出温度。在反应时间60min、液固比3、搅拌转速700r/min、硫酸浓度11.0mol/L、浸出温度95.0℃、酸解渣粒度-0.147mm的条件下,钛浸出率达到90.35%。
Abstract：Acid leaching residues from TiO2 production with sulfuric acid method were pretreated by roasting at high temperature with alkali and leached by sulfuric acid.Effects of leaching time,L/S,stirring speed,concentration of sulfuric acid,leaching temperature,and particle size on titanium leaching rate were investigated by orthogonal and single-factor experiments.The results show that influence on leaching rate of titanium is sequence as leaching time,L/S,stirring speed,concentration of sulfuric acid,and leaching temperature.Leaching rate of titanium is 90.35% under the optimum conditions including leaching time of 60 min,L/S=3,stirring speed of 700r/min,concentration of sulfuric acid of 11mol/L,leaching temperature of 95 ℃,and particle size of-0.147 mm.
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基本信息:
中图分类号:TF823;X78
引用信息:
[1]尹建平,何婷婷,唐明洁,等.钛白酸解废渣中钛的浸出工艺研究[J].有色金属(冶炼部分),2017(06):20-23.
基金信息:
广西科技计划资助项目(桂科重1355002-4)
2017-06-12
2017-06-12