采矿与岩层控制工程学报2025，Vol.7Issue(4)：136-152,17.DOI:10.13532/j.jmsce.cn10-1638/td.2024-1483
基于原位交联网络结构的煤基固废固碳材料研究
Carbon sequestration material development with coal-based solid waste based on in-situ crosslinked network structures
摘要
Abstract
For coal mine strata control,comprehensive disposal of coal-based solid waste and carbon sequestration/reduction,a systematic approach was designed involving coal-based solid waste pretreatment,material production,and gas sequestration units.Coal gangue,fly ash,and other coal-based solid wastes were crushed and sieved.A three-dimensional(3D)in-situ crosslinked polymer network using a four-arm crosslinker(pentaerythritol glycidyl ether)to immobilize CO2 was developed,thereby establishing an in-situ crosslinking network-based carbon sequestration method.The influence of the in-situ crosslinked polymer network structure on the slurry properties,mechanical characteristics,hydration products,microstructure and carbon sequestration efficiency of solid waste-based carbon sequestration grouting/filling materials was investigated using various characterization techniques.The coupling mechanism of the in-situ crosslinked polymer network structure in these materials was elucidated.Experimental results demonstrate that the in-situ crosslinked network structure enhanced the CO2 immobilization capacity from 1.29 mg/g to 2.17 mg/g,achieving highly efficient carbon fixation.Additionally,the in-situ crosslinked network accelerated the hydration rate,promoted the hydration process,and significantly improved mechanical strength,with flexural strength increasing by 128.8%and compressive strength by 118.4%.Field tests further confirmed that the performance of the developed solid waste-based carbon sequestration grouting material in rock reinforcement,high-efficiency carbon sequestration and solid waste disposal.关键词
煤矿岩层控制/煤基固废综合处置/充填/注浆材料/CO2固定/原位交联网络结构Key words
coal mine strata control/disposal of coal based solid waste/filling/grouting materials/CO2 sequestration/in-situ cross-linking network structure分类
矿业与冶金引用本文复制引用
李嘉峰,李明,张群涛,陈惠元,杨建威,孙晓冬,冯彦军,姜鹏飞,张镇,李文洲,王涛,王正胜..基于原位交联网络结构的煤基固废固碳材料研究[J].采矿与岩层控制工程学报,2025,7(4):136-152,17.基金项目
国家自然科学基金资助项目(52404126,52304141) （52404126,52304141）
天地科技股份有限公司资助项目(2023-TD-MS0013) （2023-TD-MS0013）
中煤科工开采研究院有限公司资助项目(KCYJY-2025-MS-02,KCYJY-2024-QN-04) （KCYJY-2025-MS-02,KCYJY-2024-QN-04）
