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 ›› 2016, Vol. 48 ›› Issue (6): 51-.

• 论文 • 上一篇    下一篇

攀枝花钛渣氧化改性酸浸和微波消解工艺对比

邓 林,同艳维,毛雪华   

  1. 攀枝花学院生物与化学工程学院,四川攀枝花 617000
  • 出版日期:2016-06-10 发布日期:2016-06-02

Contrastive study on processes of acid leaching oxidizing modification and microwave digestion of Panzhihua Ti-slag

 DENG   Lin, TONG  Yan-Wei, MAO  Xue-Hua   

  1. College of Biological and Chemical Engineering,Panzhihua University,Panzhihua 617000,China
  • Online:2016-06-10 Published:2016-06-02

摘要: 为获得攀枝花钛渣制备高品质富钛料的适宜方法,对比研究了氧化改性酸浸工艺和微波消解工艺,并利用X射线衍射(XRD)、扫描电镜(SEM)对产物进行表征。结果表明:钛渣氧化改性后在常压酸浸工艺中反应活性差,难以有效除杂;微波消解工艺有利于破坏钛渣的致密固溶体,其效果比氧化改性常压酸浸工艺好。在盐酸质量分数为25%、液固比为4 mL/g、压力0.2 MPa条件下,采用微波消解工艺制得了二氧化钛质量分数为88%、铁质量分数为2%~3%、氧化镁+氧化钙质量分数<1.5%的富钛料。该富钛料符合沸腾氯化工艺生产钛白粉对原料的要求。

关键词: 钛渣, 富钛料, 氧化改性, 微波消解

Abstract: The processes of acid leaching oxidizing modification and microwave digestion to prepare high quality Ti concen- trate from Panzhihua Ti-slag were contrastively studied.The as-prepared products were characterized by XRD,SEM,and other techniques.It was found that Ti-slag had a low leaching reactivity in the oxidizing modification,and its impurities could not be removed effectively by atmospheric leaching.However,Ti-slag had a much better leaching reactivity in microwave digestion process which was helpful to destroy the dense structure.Besides,the best microwave digestion conditions were that the hydrochloric acid mass fraction was 25%,the ratio of acid to ore was 4 mL/g,and the pressure was 0.2 MPa.Under those conditions superior Ti concentrate contained over 88% TiO2,Fe of 2%~3%(mass fraction),and MgO+CaO(mass fraction)< 1.5%,which met the requirements of raw material of titanium oxide by fluidized chloridization process.

Key words: Ti-slag, Ti-rich feedstock, oxidizing modification, microwave digestion

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