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Studies on hydrophobic surface modification of magnetite used for deinking of waste paper
Author(s): YAN Bo, ZHENG Qi, CHE Xiao-kui, DUAN Jin, JIA Li-pan, ZHANG Lei
Pages: 49-
52
Year: 2011
Issue:
16
Journal: China Pulp & Paper Industry
Keyword: 磁铁矿; 磁种; 表面疏水改性; 废纸脱墨;
Abstract: 磁铁矿是亲水的,为了使其作为磁种用于磁选法脱墨中,必须进行表面疏水改性.本实验筛选出油酸钠与硬脂酸的混合酸作为最优改性剂,采用正交实验寻求其最优的改性工艺条件,并用SEM、FTIR对Fe304改性前后的形貌和结构进行表征.结果表明:Fe304由亲水性变为疏水性,其反应温度、时间和pH值是影响改性效果的主要因素,改性剂与磁铁矿通过化学键合的方式发生吸附.
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