本发明还提供了上述 铁氧体磁粉的制备方法，其包括以下步骤：配料、混料、预烧、粗破碎、 细磨、烘干、退火、解碎。
The invention also provides the preparation method of the ferromagnetic oxide powder, comprising the steps of dosing, mixing, preburning, crude crushing, fine grinding, drying, annealing and smashing.
介绍了铸件退火炉由油炉改为煤粉炉的技术方案及烟尘治理装置。
The transformation of oil fired annealing oven into fine coal fire one was introduced. The installation of controlling smoke and dust annealing are described also.
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