摘要
为获得易萃取分离的三价铁与钛的盐酸溶液,对盐酸浸出焙烧氧化与球磨氧化的攀枝花钛铁矿进行了研究.结果表明,氧化方式对钛铁矿浸出有显著的影响.球磨氧化明显强化了钛铁矿的浸出,钛和铁在20min时的浸出率分别达到93%和97%;焙烧氧化则抑制了矿物特别是钛的浸出,钛和铁在260min后的浸出率分别为40%和94%(浸渣中TiO2含量约为80%).钛铁矿的球磨预氧化是改进和强化现有盐酸法钛白生产工艺的有效途径.
Hydrochloric acid leaching of Panzhihua ilmenite oxidized by roasting and mechanical milling,respectively,was studied to obtain lixivium with ferric and titanium compounds,which is easy to purify by solvent extraction.The results showed that the oxidation methods significantly affected the dissolution.The milling oxidation considerably enhanced the dissolution with the extraction rates of titanium and total iron of 93% and 97%,respectively,in 20 min,while the roasting inhibited the dissolution with the extraction rates of titanium and total iron of 40% and 94%,respectively,in 260 min （the TiO2 content in the as-obtained residue was up to 80%）.Therefore,the milling oxidation prior to leaching could improve and enhance the existing hydrochloric acid pigment process.
出处
《过程工程学报》
CAS
CSCD
北大核心
2010年第5期939-943,共5页
The Chinese Journal of Process Engineering
基金
教育部博士点基金资助项目(编号:20070610125)
关键词
钛铁矿
氧化
盐酸
浸出
ilmenite
oxidation
hydrochloric acid
leaching
