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利用高碳高硫煤矸石制备高强陶粒研究

李晓兵 马雯卓 杨肖飞 梁杰 潘建 朱德庆 杨晓曼 刘天文 兰锦辉 刘家军

李晓兵, 马雯卓, 杨肖飞, 梁杰, 潘建, 朱德庆, 杨晓曼, 刘天文, 兰锦辉, 刘家军. 利用高碳高硫煤矸石制备高强陶粒研究[J]. 环境工程, 2025, 43(11): 187-195. doi: 10.13205/j.hjgc.202511021
引用本文: 李晓兵, 马雯卓, 杨肖飞, 梁杰, 潘建, 朱德庆, 杨晓曼, 刘天文, 兰锦辉, 刘家军. 利用高碳高硫煤矸石制备高强陶粒研究[J]. 环境工程, 2025, 43(11): 187-195. doi: 10.13205/j.hjgc.202511021
LI Xiaobing, MA Wenzhuo, YANG Xiaofei, LIANG Jie, PAN Jian, ZHU Deqing, YANG Xiaoman, LIU Tianwen, LAN Jinhui, LIU Jiajun. Preparation of high-strength ceramsites from coal gangue with high carbon and sulfur content[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(11): 187-195. doi: 10.13205/j.hjgc.202511021
Citation: LI Xiaobing, MA Wenzhuo, YANG Xiaofei, LIANG Jie, PAN Jian, ZHU Deqing, YANG Xiaoman, LIU Tianwen, LAN Jinhui, LIU Jiajun. Preparation of high-strength ceramsites from coal gangue with high carbon and sulfur content[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(11): 187-195. doi: 10.13205/j.hjgc.202511021

利用高碳高硫煤矸石制备高强陶粒研究

doi: 10.13205/j.hjgc.202511021
基金项目: 

广西重点研发计划(AA24206042);中南大学研究生科研创新项目(自主探索类)(2024ZZTS0380)

详细信息
    作者简介:

    李晓兵,男,高级工程师,主要研究方向为煤炭及其固废利用。1034119555@qq.com

    通讯作者:

    马雯卓,女,博士生,主要研究方向为固废资源化利用。wenzhuoma@csu.edu.cn

    潘建,男,教授,主要研究方向为固废资源化利用。pjcsu@csu.edu.cn

Preparation of high-strength ceramsites from coal gangue with high carbon and sulfur content

  • 摘要: 煤矸石是我国堆存量最大的固体废弃物,未经处理大量堆放会带来诸多环境问题。大宗化、高值化处理煤矸石刻不容缓。研究以高碳高硫煤矸石为原料,采用火法自热脱碳、反浮选脱碳工艺对其进行脱碳、脱硫,并采用煤矸石原矸和两种脱碳煤矸石制备陶粒,通过调整原料配比、生坯制备参数和陶粒烧制参数,系统研究高强建筑陶粒的制备工艺及性能特点。研究表明:与煤矸石原矸和火法自热脱碳煤矸石相比,反浮选脱碳煤矸石更适合制备陶粒。最佳造球参数为造球时间8 min、生坯水分14.0%、原料粒径<0.074 mm的颗粒占比为70%,此时生坯的落下强度、抗压强度、爆裂温度分别为>20次/0.5 m、20 N/个、335 ℃,干坯抗压强度为68 N/个。干坯在1125 ℃下焙烧25 min得到高强陶粒,其堆积密度、表观密度、吸水率、筒压强度和抗压强度分别为884 kg/m3、1667 kg/m3、8.24%、7.49 MPa和2541 N/个,符合GB/T 17431.1—2010 《轻集料及其试验 方法 第1部分:轻集料》中900级高强陶粒的要求。该研究可为高硫高碳煤矸石的资源化利用提供理论支持和实践依据,有助于推动固体废弃物的高值化利用。
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  • 收稿日期:  2025-01-08
  • 录用日期:  2025-03-15
  • 修回日期:  2025-02-24
  • 网络出版日期:  2026-01-09

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