活化剂强化钛精矿酸浸过程研究
Research on activator enhanced acid leaching process of titanium concentrate
王海波 1龙涛 2向龙 2李礼 2田从学3
作者信息
- 1. 钒钛资源综合利用国家重点实验室,四川 攀枝花 617000;四川大学化学工程学院,四川 成都 610065
- 2. 重庆理工大学化学化工学院,重庆 400054
- 3. 攀枝花学院钒钛学院,四川 攀枝花 617000
- 折叠
摘要
针对硫酸法钛白生产中反应酸浓度较高导致不能实现硫酸平衡的问题,通过引入活化剂强化酸解反应过程,降低反应酸浓度.研究了活化剂对钛精矿低浓度酸浸的强化作用,考察了反应酸浓度和活化剂加量对反应温度和钛浸出率的影响.结果表明:活化剂的加入,可以增加反应放热量,提高反应温度,并改善固相物的疏松度,浸出活性更高;活化剂加量为0.5%、酸矿比为1.56∶1,反应酸浓度为80%的条件下,钛精矿的钛浸出率达到93.47%;酸浸残渣主要成分为TiFeO3、Ca(Fe,Mg)Si2O6 和SiO2,表明原料中的钛大部分被转移到液相中.
Abstract
In response to the problem of high reaction acid concentration in the production of titanium dioxide by sulfuric acid method,which leads to the inability to achieve sulfuric acid equilibrium,an ac-tivator is introduced to enhance the acid hydrolysis reaction process and reduce the reaction acid con-centration.The strengthening effect of the activator on the low concentration acid leaching of titanium concentrate was studied,and the effects of reaction acid concentration and activator dosage on reaction temperature and acid leaching rate were investigated.The results show that the addition of activating agent can increase the heat release of the reaction,increase the reaction temperature,and improve the porosity of the solid phase,resulting in higher leaching activity.Under the conditions of 0.5%activator dosage,1.56:1 acid to ore ratio,and 80%reaction acid concentration,the acid hydrolysis rate of titani-um concentrate reaches 93.47%.The main components of acid leaching residue are TiFeO3,Ca(Fe,Mg)Si2O6 and SiO2,indicating that most of the titanium in the raw material can be transferred to the li-quid phase.
关键词
钛精矿/酸浸/活化剂/固相物Key words
titanium concentrate/acid leaching/activator/solid phase引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据