期刊论文

中文

膜科学与技术

1007-8924

2006

26

5

86-89

10.3969/j.issn.1007-8924.2006.05.016

国家科技部创新基金资助课题（04C26214301295）；

本校为其他机构

通过考察铁盐、铜盐和亚锡盐对硝酸扩散系数的影响研究了采用扩散渗析法从废退锡液中回收硝酸的可行性,实际样品的研究表明,扩散渗析法回收硝酸的回收率在70%以上.余液利用离子膜-电沉积法回收其中的金属锡,最佳工艺条件为:温度30～40℃、槽电压3.5V、电流密度1.0～2.3 A/dm~2,并保持阳极液搅拌,此时锡的回收率达62%,电流效率在60%以上.结果表明,扩散渗析-离子膜-电沉积组合工艺可有效回收硝酸型废退锡液中的硝酸和锡,以实现其资源化利用.

The recovery of tin and nitric acid from the spent solder stripper, and the feasibility of recovering nitric acid were investigated by determining diffusion dialysis（DD） coefficient of the dialysis membrane for different spent liquor including iron, copper and tin. The results show that the HNO3 recovery rate was higher than 70 %. The IEM - electrowinning process was proposed to recover tin from the mother solution. The electricity efficien- cy was 62 % and the recovery of tin as 60 % under the condition of operation temperature 30-40℃, cell...