| 攀枝花钛渣氧化改性酸浸和微波消解工艺对比 |
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| 引用本文： | 邓 林,同艳维,毛雪华. 攀枝花钛渣氧化改性酸浸和微波消解工艺对比[J]. 无机盐工业, 2016, 48(6): 51 |
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| 作者姓名： | 邓 林 同艳维 毛雪华 |
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| 作者单位： | 攀枝花学院生物与化学工程学院，四川攀枝花 617000 |
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| 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。
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| 关 键 词： | 钛渣 富钛料 氧化改性 微波消解 |
Contrastive study on processes of acid leaching oxidizing modification andmicrowave digestion of Panzhihua Ti-slag |
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| DENG Lin,TONG Yan-Wei,MAO Xue-Hua. Contrastive study on processes of acid leaching oxidizing modification andmicrowave digestion of Panzhihua Ti-slag[J]. Inorganic Chemicals Industry, 2016, 48(6): 51 |
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| Authors: | DENG Lin TONG Yan-Wei MAO Xue-Hua |
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| Affiliation: | College of Biological and Chemical Engineering，Panzhihua University，Panzhihua 617000，China |
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| 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. |
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| Keywords: | Ti-slag Ti-rich feedstock oxidizing modification microwave digestion |
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