摘要
随着禁烧令实施,作为煤矸石主要利用途径的烧结砖生产受到限制,严重影响煤矸石利用率。平顶山作为我国传统煤炭生产基地,虽近几年采煤量降低,但煤矸石排放量仍不容忽视。煤矸石综合利用再次成为平煤神马集团的主要技术难题,且每年承担巨额的环保税。本文通过对平顶山矿区煤矸石进行多点取样分析,以对其后期分类处理和利用提供参考。结果显示该地区70%~80%煤矸石以石英为主要矿物,20%~30%以碳酸钙为主;烧失量和吸水率相对较低,强度差异较大。相对而言,石英或碳酸钙含量高的煤矸石各项性能较好,而铁含量高的煤矸石耐水性较差。总体上,煤矸石组成和性能波动较大,应分类堆放以便后期应用。
With the implementation of the ban on open burning,the production of sintered brick,as main utilization way of coal gangue,has been restricted and the utilization rate of coal gangue is seriously affected.The amount of coal mining in Pingdingshan mining area,a traditional coal production base in China,has obviously decreased,but the amount of gangue is still not negligible.The utilization of gangue has become a major technical challenge for Pingmei Shenma Group again.It also bring about a substantial environmental tax annually.Coal gangue from multiple sampling points in the Pingdingshan mining area was analyzed to provide reference for its subsequent classification and utilization.The results showed that from 70% to 80% of coal gangue was primarily composed of quartz,while 20% to 30% was mainly calcium carbonate.The loss on ignition and water absorption were relatively low,but the strengths had great changes.Relatively speaking,coal gangue with higher quartz or calcium carbonate content had better properties,whereas coal gangue with high iron content had a poorer water resistance.Overall,coal gangue varied significantly in the composition and properties,and the classified storage was very necessary for the later application.
作者
王珂
马先伟
罗闯旦
张建武
欧阳凯
WANG Ke;MA Xianwei;LUO Chuangdan;ZHANG Jianwu;OUYANG Kai(Henan Zhongping Science Research and Design Institute Co.,Ltd.,Henan Pingdingshan 467000;School of Civil and Transportation Engineering,Henan University of Urban Construction,Henan Pingdingshan 467036,China)
出处
《广州化工》
2026年第5期148-152,共5页
GuangZhou Chemical Industry
基金
平顶山市重大专项(2022ZD011)。
关键词
煤矸石
平顶山煤矿
岩性
固体废弃物
coal gangue
Pingdingshan coal mines
lithology
solid waste
