Abstract： Iron nano-powders were recovered from the magnetic filter products of cold rolling mill through supersonic cleaning. Influence of different detergents and solid-liquid separation methods on the dispersion performance was discussed . Dispersion performance of the iron nanopowders was compared by experiment under different solid-liquid separation methods using surfactant F, oleic acid, polyvinylpyrrolidone or alkyl glycoside synergized with other ingredients such as TX-10, AEO-9, Na₂SiO₃, EDTA and n-butanol. The results show that the suitable detergents include polyvinylpyrrolidone with mass fraction of 0.6% or alkyl glycoside with mass fraction of 0.2%, TX-10 with mass fraction of 0.7%, AEO-9 with mass fraction of 0.5%, Na₂SiO₃ with mass fraction of 2%, EDTA with mass fraction of 0.1%, n-butanol with mass fraction of 0.1% and the other is deionized water. Centrifugal separation is adopted for solid-liquid separation.

Keywords: iron nano-powder; recover; magnetic filter product; dispersion performance

中图分类号：X75        文献标志码：A

文章编号：1008-5548(2015)01-0038-04

DOI:10.13732/j.issn.1008-5548.2015.01.008

收稿日期：2014-03-31， 修回日期：2014-04-18，在线出版时间：2015-03-02。

第一作者简介：赵平（1965—)，男，博士，教授，研究方向为化工分离及生物分离。 E-mail：zhaopinghebei@163.com。