研究分析了粉煤灰磁化肥的三个构成要素 ,即粉煤灰、养分配比和剩磁对其质量的影响 ,指出了优化指标提高质量的技术途径 ,探讨了造粒对提高粉煤灰磁化肥质量的作用 ,提出了辗辊挤压造粒工艺中的技术关键 The paper analyzed and analyzed the three components of fly ash magnetized fertilizer, namely, the effect of fly ash, nutrient ratio and remanent magnetism on its quality, pointed out the technical ways of optimizing index to improve the quality, discussed the effect of granulation on fly ash The role of magnetic fertilizer quality, roll extrusion granulation technology proposed in the key technology