本文以电解锰渣为原料,经酸浸、除杂后,采用化学共沉淀法结合高温焙烧法制备了锰锌铁氧体磁粉.通过改变反应温度,研究了共沉淀温度对锰锌铁氧体前驱体合成率的影响.分别用XRD、BET以及VSM对掺杂样品的晶粒结构、比表面积以及磁性能进行了表征.结果表明,当温度为50℃时前驱体合成率最高,达到87.9％；适当的SiO2掺杂可以提高样品的比表面积,当掺杂量为0.45％时,样品的磁性能最佳,其饱和磁化强度为71.95 emu/g,矫顽力为10.49 G,剩余饱和磁化强度为1.32 emu/g.
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