| 化学沉淀-溶剂沉淀法脱除湿法磷酸中氟的研究 |
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| 引用本文： | 纳海莺,蒋丽红,陈雪萍.化学沉淀-溶剂沉淀法脱除湿法磷酸中氟的研究[J].云南大学学报(自然科学版),2010,32(1):68-72. |
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| 作者姓名： | 纳海莺 蒋丽红 陈雪萍 |
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| 作者单位： | 昆明理工大学, 云南昆明 650051 |
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| 摘 要： | 以乙醇为溶剂,RNH2为沉淀剂,采用化学沉淀-溶剂沉淀法对湿法磷酸进行净化,在乙醇与预处理酸体积比为2.0、溶剂沉淀剂用量为3.5%、反应温度40℃、反应时间100min条件下,脱氟率可达到96%以上,磷收率为86%以上.
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| 关 键 词： | 湿法磷酸 化学沉淀 溶剂沉淀 脱氟 |
| 收稿时间： | 2009-4-8 |
Defluorination of wet-process phosphoric acid with chemical precipitation-solvent precipitation |
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| NA Hai-ying,JIANG Li-hong,CHEN Xue-ping.Defluorination of wet-process phosphoric acid with chemical precipitation-solvent precipitation[J].Journal of Yunnan University(Natural Sciences),2010,32(1):68-72. |
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| Authors: | NA Hai-ying JIANG Li-hong CHEN Xue-ping |
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| Institution: | Kunming University of Science and Technology, Kunming 650051, China |
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| Abstract: | The purification of wet-process phosphoric acid was researched with chemical precipitation-solvent precipitation with ethanol as solvent and RNH2 as precipitator.The optimized process parameters were obtained:the volume ratio of ethanol to pretreatment acid 2: 1,solvent precipitator 3.5% (w),reaction temperature 40 ℃,reaction time 100 min.Under the condition,the ratio of defluorination was up to 96% and the yield of phosphorus was up to 86%. |
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