摘要
根据含钛高炉渣的结构和组分的化学性质特点,采用低温盐酸硫酸混合酸浸法将高炉渣中的钛组分富集于滤渣中,钙、铝、镁、铁等酸溶性组分富集于滤液中,研究了混合酸浓度、盐酸/硫酸配比、反应温度等对组分分离效果的影响.结果表明,采用混合酸浓度为6mol/L、盐酸与硫酸体积比为3:1的混合酸、酸渣质量比为1.2:1条件下,混合酸与含钛高炉渣在80℃反应5h后,滤渣中TiO2含量可达30%以上.
Based on the structural and composition characteristics of titanium-bearing blast furnace slag,a low temperature mixed acid leaching method was used to separate acid-soluble components from the slag into the filtrate.So the titanium was enriched relatively,the resulting titanium-rich materials could be used for industrial production.The influences of the experimental factors(mixed acid concentration,hydrochloric acid/sulfuric acid ratio,reaction time,reaction temperature and mass ratio of slag to mixed acid) on separation of its components were investigated.The results showed that an enriched residue with over 30% TiO2 could be obtained by the mixed acid leaching method and the optimum conditions were mixed acid concentration 6 mol/L(volume ratio of HCl/H2SO4=3:1),at 80℃ for 5 h,and mass ratio of acid to the slag at 1.2:1.
出处
《过程工程学报》
CAS
CSCD
北大核心
2011年第5期772-776,共5页
The Chinese Journal of Process Engineering
基金
四川省科技攻关重点基金资助项目(编号:08GY0082)
关键词
含钛高炉渣
酸解
混合酸
二氧化钛
富钛料
titanium-bearing blast furnace slag
acid dissolution
mixed acid
TiO2
titanium-rich raw material