- 目录
- 建筑石膏与胶凝材料
- 首页
复合水泥粉磨工艺对无机人造石粉末材料流动性
作者：吴世明，雷翅，张占松，张鹏，马庆阳
（广州市建筑科学研究院有限公司，广东 广州 510440）
摘要：粉末材料占水泥基无机人造石原材料质量和体积的比重较大，其良好的工作性能是无机人造石性能改善的关键，而粉末的流动性能是其工作性能的重要影响因素。采用不同的粉磨工艺，利用激光粒度分析、偏光显微镜和SEM等手段，研究了复合水泥粉末材料流动性能的基本参数，实现了复合水泥粉末材料的连续流动调控和较好的堆积性。结果表明：复合水泥粉末湿磨后颗粒表面更为平滑规则、颗粒分布更为连续，粉磨30 min后粉末达到最佳流动效果，完全流出时间为2.68 s，孔隙率为30%；粉磨60 min后粉磨效果变差，完全流出时间为4.55 s，孔隙率为60%，此时粉末再团聚现象严重。
关键词：复合水泥粉末；粉磨工艺；流动性能
中图分类号：TU528.01 文献标识码：A 文章编号：1001-702X（2019）07-0032-05
Control on the flow performance of inorganic artificial stone powderby compound cement grinding process
WU Shiming，LEI Chi，ZHANG Zhansong，ZHANG Peng，MA Qingyang
（Guangzhou Institute of Building Science Co. Ltd.，Guangzhou 510440，China）
Abstract：Powder materials in raw materials of inorganic artificial stone account for a large proportion，the key to improve property of inorganic artificial atone is the workability of composite powder，while the flow performance of the powder is an important factor of the workability. Adopting different method of grinding process，the basic working parameters of workability of composite powders were studied and continuous flow regulation and better bulk density of composite cement powder was achieved by using laser particle size analyzer，polarizing microscope and SEM. The result showed that the composite cement powder surfaces were smoother，more regular and particle distribution was more continuous after wet grinding process，after 30 min of grinding，the powder reached the best effect of fluidity，the powder spent 2.68 s to outflow entirely，which the bulk density was 30%；after 60 min of grinding，the grinding performance got worse，4.55 s spent to outflowing entirely，and the bulk density was 60%，while the composite powder appeared to gather seriously.
Key words：composite cement powders，grinding process，flow performance