摘要
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%。
Acid leaching residues from TiO_2 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.
作者
尹建平
何婷婷
唐明洁
粟海锋
YIN Jian-ping HE Ting-ting TANG Ming-jie SU Hai-feng(School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Chin)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第6期20-23,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
广西科技计划资助项目(桂科重1355002-4)
关键词
钛白
酸解废渣
浸出
钛
titanium white
waste residues of acid hydrolysis
leaching
titanium
