磷石膏制备β型半水石膏粉的工艺参数研究  

Study of Process Parameters for Producing β Type Semi-hydrate Gypsum Powder from Phosphogypsum

作　　者：彭卓飞 孟醒 刘成龙 PENG Zhuo-fei;MENG Xing;LIU Cheng-long(Jiangsu Yifu Science&Technology Co.,Ltd.,Nanjing 211178,China;State Engineering and Technology Center for Resource Utilization of By-product Gypsum from Environmental Protection Industry,Nanjing 211178,China)

机构地区：[1]江苏一夫科技股份有限公司,江苏南京211178 [2]国家环境保护工业副产石膏资源化利用工程技术中心,江苏南京211178

出　　处：《硫磷设计与粉体工程》2019年第3期13-18,I0001,共7页Sulphur Phosphorus & Bulk Materials Handling Related Engineering

摘　　要：通过磷石膏制备β型半水石膏粉试验,研究了水洗、过筛、粉磨工艺,以及掺合料等因素对β型半水石膏粉基本性能的影响。试验结果表明,常规的水洗工艺对产品的基本性能影响不大;掺入适量的超细粉煤灰和石灰,可降低产品强度;采用原料预粉磨+煅烧的工艺能够有效提高产品强度,且产品性能可满足等级为3.0的建筑石膏标准的指标要求。Through the test to produceβtype semi-hydrate gypsum from phosphogypsum,the influence by factors on the basic performance ofβtype semi-hydrate gypsum is studied,such as water washing,sieving,milling and aggregate.The test results indicate that normal water washing process does not have big influence on the basic performance of the product;while mixing with appropriate amount of ultra-fine coal ash and lime,it can reduce the product strength;by using the raw material pre-milling+roasting process,it can effectively increase the product strength,and the product performance can meet the reduirements for Grade 3.0 building gypsum standard.

关 键 词：磷石膏 半水石膏+制备 工艺参数 产品性能 强度 

分 类 号：TQ177.375[化学工程—硅酸盐工业]