改性滑石粉对防化肥结块效果的影响

发布时间：2018-05-01 03:20

  本文选题：滑石粉 + 表面改性　； 参考：《硅酸盐通报》2017年04期

【摘要】：研究硬脂酸、铝酸酯、钛酸酯对滑石粉的改性效果,以活化指数和接触角作为表征指标,得到滑石粉的较好的改性工艺参数:硬脂酸、钛酸酯、铝酸酯的用量分别为3%、2.5%、3%,改性时间为1.5 h,改性温度为65℃。分别利用粒度分析和扫描电镜观察改性前后滑石粉的粒度和形貌,发现改性滑石粉粒径减小,分散性提高。放置42 d后,未添加滑石粉的尿素和复合肥的结块率分别为26.79%和12.96%,结块强度分别为868.38 N/kg和1974.11N/kg;添加3%钛酸酯改性的滑石粉作为防结块剂时,尿素和复合肥的结块率分别0.59%和0.46%,结块强度分别为30 N/kg和40 N/kg。
[Abstract]:The modification effect of stearic acid, aluminate ester and titanate on talc powder was studied. The activation index and contact angle were taken as the characterization indexes to obtain the better modification process parameters of talc powder: stearic acid, titanate, The dosage of aluminate is 32.5%, the modification time is 1.5 h, and the modification temperature is 65 鈩，

本文编号：1827506