改性球状磷石膏在水泥生产中的应用  

Application of Modified Spherical Phosphogypsum in Cement Production

作　　者：钱海运 曹凌杨 张莎莎 王亚 QIAN Haiyun;CAO Lingyang;ZHANG Shasha;WANG Ya(Wuhu Conch Cement Co.,Ltd.,Wuhu Anhui 241213,China)

机构地区：[1]芜湖海螺水泥有限公司,安徽芜湖241213

出　　处：《水泥技术》2025年第2期76-80,共5页Cement Technology

摘　　要：研究了改性球状磷石膏在印度尼西亚南加里曼丹岛地区水泥生产中的应用情况。改性球状磷石膏是通过在磷石膏中加入碱性物质后,经成球盘或造粒机制备的工业副产品。研究以该地区生产的水泥为对象,根据石膏缓凝机理,逐步调整天然石膏与改性球状磷石膏的配比,并结合相关标准开展了水泥凝结时间、抗压强度等试验。试验结果显示,水泥中SO_(3)含量与凝结时间呈正相关趋势,但仅在特定区间内存在。通过调整石膏配比,可降低水泥中SO_(3)含量至约1.6%,同时保持凝结时间和抗压强度满足当地需求。此外,研究还发现,在天然石膏缺乏的情况下,使用改性磷石膏替代天然石膏生产水泥是可行的,且球状改性磷石膏的使用效果更佳,流动性好,SO_(3)含量波动小。The application of modified spherical phosphogypsum in cement production in South Kalimantan Island,Indonesia was studied.Modified spherical phosphogypsum is an industrial byproduct prepared by adding alkaline substances to phosphogypsum and using a ball forming or granulation mechanism.The study focuses on the cement produced in the region,and gradually adjusts the ratio of natural gypsum to modified spherical phosphogypsum based on the gypsum retarding mechanism.Combined with relevant standards,tests were conducted on cement setting time,compressive strength,and other parameters.The experimental results show that the SO_(3) content in cement is positively correlated with setting time,but only exists within a specific range.By adjusting the gypsum ratio,the SO_(3) content in cement can be reduced to about 1.6%,while maintaining the setting time and compressive strength to meet local demand.In addition,the study also found that it is feasible to use modified phosphogypsum instead of natural gypsum to produce cement in the absence of natural gypsum,and the use of spherical modified phosphogypsum is more effective,with good fluidity and less fluctuation in SO_(3) content.

关 键 词：球状磷石膏 缓凝机理 凝结时间 抗压强度 流动性能 

分 类 号：TQ177.3[化学工程—硅酸盐工业]