| 醇-酯复合萃取剂萃取湿法磷酸的相平衡研究 |
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| 引用本文： | 张莉,丁瑶,丁一刚,李欣.醇-酯复合萃取剂萃取湿法磷酸的相平衡研究[J].无机盐工业,2011,43(2):53-54. |
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| 作者姓名： | 张莉 丁瑶 丁一刚 李欣 |
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| 作者单位： | 1.武汉工程大学环境与城市建设学院，湖北武汉 430073;2.武汉工程大学化工与制药学院 |
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| 摘 要： | 以醇-酯复合萃取剂为对象，对湿法磷酸溶剂萃取的液相平衡进行了研究，测定了复合萃取剂-磷酸体系在25、45、60、70 ℃相平衡时磷酸的分配曲线，考察了磷酸分配系数与温度、相比、磷酸初始浓度的关系。结果表明：复合萃取剂能萃取磷酸的最大质量分数不高于50%，温度和相比对分配系数的影响都不大，但水相磷酸初始浓度对分配系数影响很大。
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| 关 键 词： | 复合萃取剂 液液相平衡 分配系数 |
Research on equilibrium of extraction of wet-process phosphoric acid by alcohol-ester compound extractant |
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| Zhang Li,Ding Yao,Ding Yigang,Li Xin.Research on equilibrium of extraction of wet-process phosphoric acid by alcohol-ester compound extractant[J].Inorganic Chemicals Industry,2011,43(2):53-54. |
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| Authors: | Zhang Li Ding Yao Ding Yigang Li Xin |
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| Affiliation: | 1.School of Environment and Urban Construction,Wuhan Institute of Technology,Wuhan 430073,China；
2.School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology |
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| Abstract: | With alcohol-ester compound extractant as the object,liquid equilibrium of extraction of wet-process phosphoric acid(WPA) solvent was studied.WPA distribution curves of compound extractant-WPA system at the phase equilibrium temperatures of 25,45,60,70 ℃ were measured.Relations of WPA distribution coefficient with temperature,phase ratio,and initial WPA concentration were investigated.Results showed that the compound extractant′s maximum mass fraction of WPA extration did not exceed 50%;the influences of temperature and phase ratio on distribution coefficient were very little,but initial concentration of aqueous phosphoric acid had large influence on distribution coefficient. |
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| Keywords: | compound extractant liquid-liquid equilibrium distribution coefficient |
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