不同清洗条件对回收纳米铁粉分散性能影响  

Dispersion Performance of Recoverd Iron Nano-powders with Different Cleaning Conditions

作　　者：赵平[1,2] 李彦坤[1,2] 张月萍[1,2] 

机构地区：[1]河北科技大学化学与制药工程学院,河北石家庄050018 [2]河北科技大学河北省药物化工工程技术研究中心,河北石家庄050018

出　　处：《中国粉体技术》2015年第1期38-41,共4页China Powder Science and Technology

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、Na2Si O3、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Na2Si O3、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。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,Na2 Si O3, 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-9with mass fraction of 0.5%, Na2 Si O3with 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.

关 键 词：纳米铁粉 回收 磁过滤物 分散性能 

分 类 号：X75[环境科学与工程—环境工程]