| 磷矿资源加工研究进展：3．对低品位磷矿中高铁铝杂质的钝化 |
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| 引用本文： | 刘代俊,杨军,江成发,陈伟. 磷矿资源加工研究进展：3．对低品位磷矿中高铁铝杂质的钝化[J]. 磷肥与复肥, 2009, 24(2): 17-18 |
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| 作者姓名： | 刘代俊 杨军 江成发 陈伟 |
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| 作者单位： | 四川大学化工学院四川省磷化学与工程重点实验室,四川成都,610065 |
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| 摘 要： | 介绍采用高铁铝中低品位磷矿获得较高质量磷酸的新工艺.对酸解过程加入钝化剂，磷矿中铁铝杂质矿物表面形成致密膜，阻碍铁铝杂质在液相中的溶出，以实现对铁铝杂质的抑制.对于新的两段法二水流程铁铝的浸出率可低于20％．对于普通二水工艺铁铝浸出率约25％，磷的浸出率仍可保持在90％以上，该法对于中低品位高铁铝杂质磷矿具有较好的应用价值.
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| 关 键 词： | 低品位磷矿 高铁铝杂质 湿法磷酸 钝化 浸出率 |
Research progress of phosphate resource processing:3.Study on the passivation of iron and aluminum impurities in medium and low grade phosphate rock |
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| LIU Dai-jun,YANG Jun,JIANG Cheng-fa,CHEN Wei. Research progress of phosphate resource processing:3.Study on the passivation of iron and aluminum impurities in medium and low grade phosphate rock[J]. Phosphate & Compound Fertilizer, 2009, 24(2): 17-18 |
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| Authors: | LIU Dai-jun YANG Jun JIANG Cheng-fa CHEN Wei |
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| Affiliation: | Sichuan Key Laboratory of Phosphorus and Engineering;School of Chemical Engineering;Sichuan University;Chengdu;Sichuan 610065;China |
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| Abstract: | A new technology for obtaining high quality phosphoric acid from medium and low grade phosphate rocks with high iron and aluminum content is developed. The dense membranes at the surface of sesquioxide impurities including iron and aluminum compounds of the rock particles are formed by adding passivating agent so as to hinder sesquioxide impurities dissolving to liquid phase, which results in control to impurities in phosphoric acid. For the new two section diahydrate process,the results show that the solub... |
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| Keywords: | low grade phosphate rock high iron and aluminum impurities wet-process phosphoric acid （ WPA ） passivation extraction fraction |
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