铁氧体料浆组元及流变特性对喷雾干燥粉料工艺特性的影响

The Effect of Composition and Flowability of Ferrite Slurry on the Processing Parameters of Spray Dried MnZn ferrite Powders

通过ＳＥＭ和光学显微镜对喷雾干燥粉料外形及ＰＶＡ在其中的分布进行观察；研究了ＰＶＡ在料浆中的极限含量以及不同的ＰＶＡ含量对喷雾造粒粉料工艺参数的影响；最后指出料浆中铁氧体颗粒相互作用以及ＰＶＡ含量对喷雾造粒粉料松装比重以及粒度分布具有显著影响，并给出较为准确的松装比重公式。

The distribution of PVA in the spray dried MnZn ferrite powders was studied by SEM and optical microscope.Meanwhile the PVA critical content and the effect of different PVA value in slurry on the processing parameters of spray dried MnZn ferrite powders were investigated.It is found that the magnetic action between ferrite particles and the PVA content in ferrite slurry will have great influence on the bulk density and the size distribution of spray dried MnZn ferrite powders.Finally the bulk density calculation formula was given in this paper.