硅酸盐通报2016,Vol.35Issue(9):2860-2865,6.
磷石膏在水泥生产中的应用现状与展望
Current Status and Prospects on Utilization of Phosphogypsum in Cement Production
摘要
Abstract
Phosphogypsum ( PG) is an industrial by-product generated from the manufacture of phosphoric acid by the wet process .Considering a huge amount of PG discharge , and a wide demand of cement in infrastructure construction , utilizing PG in cement manufacture is an encouraging approach .This paper firstly reviewed the current challenges of using PG in ordinary Portland cement ( OPC ) and calcium sulfoaluminate cement (SAC) manufacturing.Then, the application of using PG in SAC production is discussed as a new promising way to utilize PG .When using PG to produce SAC as one of raw materials , PG can render calcareous material for OPC and SAC production .But the negative impact of impurities in PG on properties of SAC can also be eliminated by the calcination processing . However , further researches are needed to increase the decomposition rate of PG . Sulfate-rich SAC cement can be produced by adding excess PG in raw materials , in that way the decomposition rate of PG can be increased .In addition , the impurities in PG can be used as functional component to modify the setting of SAC .关键词
磷石膏/硫铝酸盐水泥/杂质/部分分解Key words
phosphogypsum/calcium sulfoaluminate cement/impurity/partially decomposition分类
建筑与水利引用本文复制引用
杨志强,陈晴,郭清春,党玉栋,李昕成,钱觉时..磷石膏在水泥生产中的应用现状与展望[J].硅酸盐通报,2016,35(9):2860-2865,6.基金项目
国家自然科学基金项目(U1202275);重庆市基础与前沿研究计划项目(cstc2013jj B50002);云南省建筑结构与新材料企业重点实验室2016年开放基金 ()