球磨时间及测试条件对氧化铝粉体粒度分析的影响

发布时间：2018-01-23 12:14

本文关键词： 球磨时间氧化铝粉体激光粒度仪　出处：《无机盐工业》2017年04期 　论文类型：期刊论文

【摘要】：以氧化铝粉体为原料,以水为分散介质,采用Easysizer20激光粒度仪进行粒度分析。研究了球磨时间、样品加入量、分散剂种类、分散剂添加量、超声波分散时间对粒度分布测试结果的影响。采用X射线衍射仪对氧化铝粉体的物相组成进行了分析。结果表明,随着球磨时间的延长,粉体的粒度逐渐减小,球磨时间为4.0 h时,测得粉体的中位径D_(50)为4.72μm。确定了氧化铝粉体的最佳测试条件:当选取球磨时间为1.0 h的粉末样品时,超声分散功率为200 W,分散时间为7 min,分散剂六偏磷酸钠用量为0.2%,样品加入量为0.4 g,在此测试条件下所测得的粉体样品粒度最小。
[Abstract]:Using alumina powder as raw material and water as dispersing medium, the particle size analysis was carried out by Easysizer20 laser granularity analyzer. The milling time, sample addition amount, dispersant type and dispersant amount were studied. The phase composition of alumina powder was analyzed by X-ray diffractometer. The results showed that the particle size decreased with the increase of ball milling time. When the milling time was 4.0 h, the median diameter of the powder was 4.72 渭 m. The optimum test conditions were determined as follows: when the milling time was 1.0 h, the powder sample was selected. The ultrasonic dispersion power is 200 W, the dispersing time is 7 min, the dosage of dispersant sodium hexametaphosphate is 0.2 and the amount of sample added is 0.4 g. Under these conditions, the particle size of the powder sample was the smallest.
【作者单位】：湖南人文科技学院材料与环境工程学院精细陶瓷与粉体材料湖南省重点实验室;
【基金】：湖南省科技计划项目(2016TP1028) 娄底市科技计划项目(2014) 湖南人文科技学院产学研合作引导项目(2014CXY03) 湖南省大学生研究性学习和创新性实验计划项目(湘教通[2015]269号)
【分类号】：TQ133.1
【正文快照】： 目前,超细粉体材料在现代化工业生产、国防建设及高科技领域中,有着越来越重要的地位,广泛应用于医药、环保、机械、轻工、化工、冶金、电子、建筑等行业[1-3]。在工业生产中,球磨工序处理是原材料细化最常用的手段。利用研磨体的冲击作用及研磨体与球磨罐内壁的研磨作用可以

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