改性淀粉黏结剂在复混肥料造粒中的应用研究  

Application of modified starch adhesive in granulation of compound fertilizer

作　　者：徐鹏翔[1] 李国学[1] 陈丽君[1] 

机构地区：[1]中国农业大学资源与环境学院环境科学与工程系,北京100094

出　　处：《磷肥与复肥》2006年第6期18-20,29,共4页Phosphate & Compound Fertilizer

基　　金："十五"国家科技攻关项目"高效有机肥与缓释肥产业化技术研究与开发"(编号2002BA516A03)

摘　　要：利用自制改性淀粉黏结剂对单养分化肥、多养分化肥和有机无机复混肥进行了造粒试验,分析了黏结剂和原料对肥料成粒性能的影响。研究结果表明:黏度为14 m Pa.s左右的黏结剂适合于磷酸二铵的造粒,黏度为20m Pa.s左右的黏结剂适合于硫酸钾造粒,黏度为27 m Pa.s左右的黏结剂适合于尿素、磷酸二铵、硫酸钾混合肥料的造粒,尿素的加入量对无机混合肥料的成粒性能影响较大;对于有机无机复混肥造粒来说,黏度为30 m Pa.s的黏结剂成粒性能好;从成粒率和颗粒粒度两方面综合考虑,过40目筛(<0.37 mm)的原料成粒效果最好;有机质能促进有机无机混合肥料的成粒,有机质加入量大于25%时,合格粒度比例、颗粒性能较好。The single -nutrient chemical fertilizer, multi -nutrient chemical fertilizer and organic -inorganic compound fertilizer are granulated by using self- produced modified starch adhesive. The effects of adhesive and materials on the granulation properties of fertilizers are analyzed. The results show. the adhesive of 14 mPa ·s is fit for the granulation of DAP, the adhesive of 20 mPa · s for potassium sulfate, the adhesive of 27 mPa · s for compound fertilizer from Urea, DAP and Potassium sulfate raw materials. The adding dosage of Urea has obvious effects on the granulation of compound fertilizer. For organic - inorganic compound fertilizer, the adhesive of 30 mPa · s has the highest granularity and better granulation property. Considering from the points of granulation ratio and granularity, the materials sieved by 40 mesh sieve has the best granulation property. The organic matter can accelerate the granulation of mixing organic -inorganic fertilizer, and the fertilizer has higher granularity and better granulation property when the organic matter content is more than 25 %.

关 键 词：淀粉黏结剂 复混肥料 造粒 

分 类 号：TQ444[化学工程—化学肥料工业]