以尿素为氮源生产复混肥中缩二脲的控制  

Control of biuret content in ureabased compound fertilizer

作　　者：苗映明[1] 张伟[1] 

机构地区：[1]上海化工研究院,上海200062

出　　处：《磷肥与复肥》2004年第1期59-60,共2页Phosphate & Compound Fertilizer

摘　　要：阐述缩二脲的物性及生成机理 ;复混肥中缩二脲的检测方法 ;缩二脲对作物生长的影响 ;复混肥有关标准中对缩二脲指标的要求。论述团粒法复混肥生产过程中影响缩二脲生成的因素及降低其生成的措施 :主要是避免尿素 (或尿液 )The physical properties of biuret and its forming mechanism, determination of its content in compound fertilizer, influence on crop growth, authorized limitation in the national standard of compound fertilizer are described. Some factors of forming biuret in production of agglomerating granulation of compound fertilizer are discussed, and the countermeasures that urea(or urea liquor)is avoided at high temperature from a long residence time, are recommended to lower its content.

关 键 词：复混肥 团粒法 尿素 缩二脲 

分 类 号：TQ444[化学工程—化学肥料工业]