摘要
磷酸一铵用作灭火剂、阻燃剂等工业领域需要有较高的纯度。传统的湿法磷酸氨化法生产的磷酸一铵杂质含量高，主要用作农业肥料，无法作为工业品使用。工业用磷酸一铵一般采用热法磷酸来生产，成本高，污染重。研究了将湿法磷酸净化来生产工业用磷酸一铵的方法，同时副产肥料级磷酸一铵。研究结果表明，该方法可以生产磷（以五氧化二磷计）质量分数在59％以上的工业用磷酸一铵，磷（以五氧化二磷计）收率在70％以上，副产的肥料级磷酸一铵有效磷（以五氧化二磷计）质量分数在30％～40％，有效磷收率为15％-20％。
Monoammonium phosphate （ MAP ） used as fire extinguishing agent and anti-combustion additive etc. requires a higher purity. MAP produced by traditional wet-process phosphoric acid （ WPA ） amination method is mainly applied in agriculture fertilizers and can not be used as industrial product because of high content of impurities. Industrial MAP is usually produced from thermal phosphoric acid, however, the cost is high and the pollution is severe. The method that through purification of WPA to produce MAP and by-producing fertilizer-grade MAP at the same time was studied. Re- suits showed that the industrial MAP prepared by this method with mass fraction of phosphorus （ as P2O5 ） was more than 59% and absorption ratio of phosphorus （ as P2O5 ） was above 70% ;mass fraction of available phosphorus （ as P2O5 ） of by produced fertilizer grade MAP was 30% - 40% and absorption ratio of available phosphorus was 15% - 20%.
出处
《无机盐工业》
CAS
北大核心
2009年第10期45-46,共2页
Inorganic Chemicals Industry
关键词
湿法磷酸净化
工业磷酸一铵
肥料磷酸一铵
wet-process phosphoric acid purification
industrial monoammonium phosphate
fertilizer-grade monoammonium phosphate
