| 利用磷酸三丁酯在硫酸-磷酸体系中萃取净化低浓度湿法磷酸工艺的研究 |
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| 引用本文： | 郭昌明,黎铉海,钱军平,冯秋平.利用磷酸三丁酯在硫酸-磷酸体系中萃取净化低浓度湿法磷酸工艺的研究[J].磷肥与复肥,2009,24(5):11-13. |
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| 作者姓名： | 郭昌明 黎铉海 钱军平 冯秋平 |
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| 作者单位： | 广西大学,化学化工学院,广西,南宁,530004 |
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| 摘 要： | 研究了利用磷酸三丁酯在硫酸-磷酸体系中萃取净化低浓度湿法磷酸工艺，获得了萃取性能较好的萃取体系。实验表明，稀释剂（煤油）添加量为磷酸三丁酯与稀释剂总质量的10％时，萃取净化较佳工艺条件为：萃取相比4，萃取温度40℃，搅拌时间15min，硫酸添加量为原料湿法磷酸的1％；SO42^-去除率-80％，Fe、Al去除率99％以上，P2O5，损失率约60％，所得净化稀磷酸P2O5，7．5％，可作为热法磷酸吸收剂。
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| 关 键 词： | 湿法磷酸 磷酸三丁酯(TBP) 硫酸-磷酸体系 净化 |
Study on purification of low concentration WPA by TBP in the sulfuric acid-phosphoric acid system |
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| GUO Chang-ming,LI Xuan-hai,QIAN Jun-ping,FENG Qiu-ping.Study on purification of low concentration WPA by TBP in the sulfuric acid-phosphoric acid system[J].Phosphate & Compound Fertilizer,2009,24(5):11-13. |
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| Authors: | GUO Chang-ming LI Xuan-hai QIAN Jun-ping FENG Qiu-ping |
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| Affiliation: | (School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China) |
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| Abstract: | The purification of low concentration WPA by TBP in the sulfuric acid-phosphoric acid system is studied, and the extraction system with better extraction properties is obtained. The results show： with the diluent （kerosene） addition amount on 10% of TBP and diluent, extraction phase ratio of 4, temperature of 40℃, mixing time of 15min, the sulfuric acid recruitment of 1% （mass fraction of material WPA ）, SO4^2- remoyal rate of about 80%, and the Fe, Al removal rates of above 99%, the P2O5 loss rate of about 60%, dilute phosphoric acid of 7.5% P2O5 can be used as the absorbent for thermalprocess phosphoric acid （ TPA ） . |
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| Keywords: | wet-process phosphoric acid （WPA） tributyl phosphate （TBP） the sulfuric acid-phosphoric acid system purification |
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