| 集成膜法回收硫酸稀土溶液中硫酸 |
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| 引用本文： | 唐建军,张伟,周康根,李荣先,张启修.集成膜法回收硫酸稀土溶液中硫酸[J].膜科学与技术,2005,25(3):54-57. |
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| 作者姓名： | 唐建军 张伟 周康根 李荣先 张启修 |
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| 作者单位： | 深圳职业技术学院,建工系,深圳,518055;中南大学,冶金分离科学与工程重点实验室,长沙,400083;深圳清华大学研究院,深圳,518055 |
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| 摘 要： | 对减压膜蒸馏浓缩硫酸稀土溶液和与扩散渗析联合回收低浓度的硫酸做了研究．结果表明，水通量随着溶液中稀土及硫酸浓度的增大而减小，随温度升高、减压侧压力降低及料液流速增大而增大；先用减压膜蒸馏法浓缩硫酸稀土溶液，再用扩散渗析法回收硫酸对稀土截留率基本无影响，但大大增高了回收液硫酸的浓度，减少了扩散渗析的处理量，而浓缩倍数越大则效果越明显．
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| 关 键 词： | 集成膜法 减压膜蒸馏 硫酸稀土 |
| 文章编号： | 1007-8924(2005)03-0054-04 |
| 修稿时间： | 2003年9月5日 |
Sulphuric acid recovery from RE sulphate solutions by integrated membrane techniques |
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| Tang Jianjun,ZHANG Wei,ZHOU Kanggen,LI Rongxian,ZHANG Qixiu.Sulphuric acid recovery from RE sulphate solutions by integrated membrane techniques[J].Membrane Science and Technology,2005,25(3):54-57. |
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| Authors: | Tang Jianjun ZHANG Wei ZHOU Kanggen LI Rongxian ZHANG Qixiu |
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| Affiliation: | TANG Jianjun~1,ZHANG Wei~1,ZHOU Kanggen~2,LI Rongxian~3,ZHANG Qixiu~2 |
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| Abstract: | Concentrating RE sulphate solutions by VMD was first experimentally studied in this paper, and in sulphuric acids recovery low concentration from RE sulphate solutions by VMD and DD was also studied. The results show that the increase in RE and H_2SO_4 concentration decrease the water flux;but the increase in temperature or the decrease pressure in the permeate side or increasing feed flow rate increase water flux; The sulphuric acid concentration in recovered solutions increase and treating quantity for DD decreased evidently when concentrating RE sulphate solutions by VMD first and DD next were carried out, This means has a little influence on rejection of RE, This is anoutstanding advantage for the combincation of VMD and DD. |
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| Keywords: | integrated membrane techniques diffusion dialysis rare earth sulphate |
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