一、前言 目前,国内复合肥的造粒形式主要有3种:挤压式、转盘式和转鼓式。挤压式主要用于有机复合肥的造粒,由于有机复合肥原料供应问题,目前产量较少,且因其机械设备维护、保养较困难,效率低,故障率高,运行成本大,故较少在生产上使用。大多数颗粒复合肥厂的造粒工艺主要采用圆盘式造粒和转鼓式造粒。圆盘式造粒适用于低含量的复合肥,其工艺技术简单灵活,无需蒸汽,产量较大,粒型好,并且可以在喷水过程中添加水溶性的微 I. Introduction At present, there are mainly three kinds of granulation forms of domestic compound fertilizer: squeeze type, turntable type and drum type. Extrusion is mainly used for granulation of organic compound fertilizer, due to the supply of organic compound fertilizer raw materials, the current output less, and because of its mechanical equipment maintenance, maintenance more difficult, low efficiency, high failure rate, operating costs, it is more Less used in production. Most particle compound fertilizer plant granulation process using disc granulation and drum granulation. Disc granulation suitable for low content of compound fertilizer, the technology is simple and flexible, without steam, large output, good particle size, and can add water-soluble micro-spray process