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介绍物料中水分的类型,分别从干燥系统、产品临界相对湿度、原料含水量、生产负荷等方面阐述影响尿基复合肥产品水分的因素。指出尿基复合肥产品水分不仅受干燥风温、热风流速、干燥时间的制约,更与产品的临界相对湿度、原料磷酸浓度、洗涤液密度、固体原料含水率、生产负荷密切相关。
The type of water in the material is introduced, and the factors affecting the water content of the urea-based compound fertilizer product are described respectively from the drying system, the critical relative humidity of the product, the moisture content of the raw material and the production load. It is pointed out that the water content of urine-based compound fertilizer products is not only restricted by the drying air temperature, the hot air flow rate and the drying time, but also closely relates to the critical relative humidity of the product, the phosphoric acid concentration of the raw material, the density of the washing liquid, the moisture content of the solid raw material and the production load.