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以洗涤液中的硫酸、磷酸,以及氨、硫酸铵、过磷酸钙生产硫磷酸铵复合肥,对硫磷酸铵物相组成、生产控制的关键因素进行探讨。通过实例定量测算得出:硫酸铵、过磷酸钙用量一定时,控制造粒机出口物料中和度n(N)/n(P)在1.70~1.85、硫酸消耗在220 kg/t左右时,生产状况良好,设备运行良好。
In the washing liquid sulfuric acid, phosphoric acid, as well as ammonia, ammonium sulfate, superphosphate production of ammonium thiosulfate fertilizer, ammonium thiosulfate phase composition, production and control of the key factors are discussed. Through the quantitative calculation, the results show that when the dosage of ammonium sulfate and superphosphate is constant, the degree of neutralization n (N) / n (P) at the exit of granulator is controlled to 1.70 ~ 1.85 and the consumption of sulfuric acid is about 220 kg / t, The production is in good condition and the equipment is running well.