摘要
以海南万宁的钛铁矿和硫酸铵为主要原料,通过熔融反应法使钛铁矿中的钛转化为易溶于稀酸的硫酸氧钛,用稀硫酸浸取,达到提高钛浸取率的目的。考察了硫酸铵加入量、焦硫酸钾加入量、反应温度、稀硫酸浸取浓度对钛浸取率的影响。实验结果表明:硫酸铵和焦硫酸钾的加入量、反应温度对钛浸取率的影响较大。提高钛浸取率的最佳条件为:m(钛铁矿)∶m(硫酸铵)∶m(焦硫酸钾)=1∶6∶0.5,反应温度为450℃,保温时间为30 min,稀硫酸浸取浓度为2.32 mol/L,在此条件下钛的浸取率达到96.82%。
For the purpose of increasing the titanium leaching rate, the titanium in ilmenite was firstly transformed into titanyl sulfate, which was easy to dissolve in dilute acid, by the sulfate melting reaction method, with the ilmenite from Wanning, Hainan Province and （NH4）2SO4 as the main raw materials, and then leaching with dilute sulfuric acid.Effects of the added amounts of（NH4）2SO4 and K=SEOT,reaction temperature ,and leaching concentration of dilute sulfuric acid on the titanium leaching rate were investigated.Experimental results showed that the added amounts of（NH4）2SO4 and K2S207, and the reac- tion temperature had a greater impact on the titanium leaching rate.The optimum conditions of enhancing the titanium leach- ing rate were as follows： the mass ratio of ilmenite, （NH4）2SO4, and K2gEO7Was 1：6：0.5, the reaction temperature was 450 ~C, the holding time was 30 min,and the concentration of dilute sulfuric acid was 2.32 mol/L.The leaching rate of titanium reached 96.82% under the above optimum conditions.
出处
《无机盐工业》
CAS
北大核心
2013年第10期11-13,共3页
Inorganic Chemicals Industry
基金
海南省自然科学基金项目(512109)
海南大学2012年本科生创新科研课题(HDCX2012025)
关键词
钛铁矿
二氧化钛
硫酸铵
浸取率
ilmenite
titanium dioxide
ammonium sulfate
leaching rate
