无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2013, Vol. 45 ›› Issue (10): 11-.

• 论文 • 上一篇    下一篇

硫酸盐熔融反应法从钛铁矿中提取钛的研究

陈科云1,张德拉1,2,张永明1,2,徐树英1,2,3   

  1. 1.海南大学材料与化工学院,海南海口570228;2 .海南大学,海南省石油化工产品检测技术重点实验室;3.天津大学化工学院
  • 出版日期:2013-10-10 发布日期:2013-10-08

Research on extracting titanium from ilmenite by sulfate melting reaction

Chen Keyun1,Zhang Dela1,2,Zhang Yongming1,2,Xu Shuying1,2,3   

  1. 1.School of Materials and Chemical Engineering,Hainan University,Haikou 570228,China;
    2.Key Laboratory of Petrochemical Product Detecting Techniques of Hainan Province,Hainan University;
    3. School of Chemical Engineering,Tianjin University
  • Online:2013-10-10 Published:2013-10-08

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%。

关键词: 钛铁矿, 二氧化钛, 硫酸铵, 浸取率

Abstract: 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(NH42SO4 as the main raw materials,and then leaching with dilute sulfuric acid.Effects of the added amounts of(NH42SO4  and K2S2O7,reaction temperature,and leaching concentration of dilute sulfuric acid on the titanium leaching rate were investigated.Experimental results showed that the added amounts of(NH42SO4 and K2S2O7, and the reac- tion temperature had a greater impact on the titanium leaching rate.The optimum conditions of enhancing the titanium leaching rate were as follows: the mass ratio of ilmenite,(NH42SO4,and K2S2O7was 1∶6∶0.5,the reaction temperature was  450 ℃, 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.

Key words: ilmenite, titanium dioxide, ammonium sulfate, leaching rate

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