矿产综合利用2026，Vol.47Issue(2)：154-159,6.DOI:10.12476/kczhly.202307130385
磷石膏—水泥复合矸石膏体的综合性能与应用效果
Comprehensive Properties and Application of Phosphogypsum Cement Composite Gangue
摘要
Abstract
[Objective]in order to improve the applicability of gangue in filling mining,phosphogypsum and cement composite gangue was prepared.[Method]Tests were conducted to analyze the effects of the content of phosphogypsum and gangue on the comprehensive performance indexes such as slurry fluidity,dry shrinkage rate,mechanical properties and permeability,etc..The hydration mechanism was discussed using mineral composition and microscopic image results.The application effect of the material in coal mine engineering is also evaluated.[Result]The addition of phosphogypsum increased the slump of slurry,decreased the bleeding rate,and decreased the drying shrinkage index.When the dosage is 15％,the compressive strength,flexural strength and permeability indexes of phosphogypsum cement compound gangue are the best.The chemical activity of phosphogypsum can promote the secondary hydration of cement,increase the density of slurry,and improve the indexes of gangue.[Conclusion]In practical application,filling mining with phosphogypsum cement composite gangue can not only realize comprehensive utilization of solid waste and phosphogypsum in coal mining,but also bring remarkable economic benefits.关键词
矸石膏体/磷石膏/强度/渗透性/应用Key words
guage paste/phosphogypsum/strength/permeability/application分类
矿业与冶金引用本文复制引用
刘琳,卢小玉,仝佩..磷石膏—水泥复合矸石膏体的综合性能与应用效果[J].矿产综合利用,2026,47(2):154-159,6.基金项目
国家自然科学基金项目(52008374) （52008374）
河南省地区的社科联调研课题(SKL-2022-2248) （SKL-2022-2248）
