摘要：通过清洗法回收冷轧磁过滤物中的纳米铁粉,讨论不同清洗剂、固液分离方式对纳米铁粉的分散性能的影响,对比表面活性剂F、油酸、聚乙烯吡咯烷酮、烷基糖苷在壬基酚聚氧乙烯醚、脂肪醇聚氧乙烯醚、Na₂SiO₃、乙二胺四乙酸、正丁醇协同作用下通过不同固液分离方式得到产品铁粉的分散性能。结果表明:合适的清洗剂组成是质量分数为0.6%的聚乙烯吡咯烷酮或质量分数为0.2%的烷基糖苷、质量分数为0.7%的壬基酚聚氧乙烯醚、质量分数为0.5%的脂肪醇聚氧乙烯醚、质量分数为2%的Na₂SiO₃、质量分数为0.1%的乙二酸四乙胺、质量分数为0.1%的正丁醇,其余为去离子水;固液分离方式采用离心分离。

关键词：纳米铁粉；回收；磁过滤物；分散性能

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