摘要
对比分析了山西北部部分矿区(平朔、朔州和大同)煤矸石的重金属元素含量,探讨了煤矸石的组成及重金属元素的赋存形态和迁移规律。结果表明:矿区煤矸石的化学组成存在一些差异,但还是以SiO2和Al2O3为主要组成;矿区煤矸石的淋溶浸出液大都偏碱性,其煤矸石中重金属含量都较小,Cu含量较多,其余危害重金属元素含量较低,基本不具有浸出毒性;朔州地区的Cu和Pb含量较高,大同地区的Cu和Mn含量较高;大多数重金属元素的赋存形态以稳定的硅酸盐结合态为主,其次是可氧化态和还原态。针对分析结果,提出了相应的对策建议和利用途径。
In this study,it mainly focuses on coal gangue in some mining areas in northwestern Shanxi,the composition and content of heavy metal elements were analyzed by chemical measurement,and the data was compared and analyzed.The composition of coal gangue and the occurrence patterns and migration rules of heavy metal elements were yet discussed.The evaluation results showed that there were some differences in the chemical composition of coal gangue in the mining area,but the composition was mainly SiO2 and Al2O3;the leaching solution of coal gangue in the mining area was mostly alkaline,and the content of heavy metals in the coal gangue was relatively small,Cu High content,low content of other hazardous heavy metal elements and basically no leaching toxicity;Cu and Pb content in Shuozhou area was high,and Cu and Mn content in Datong area is high;the occurrence form of most heavy metal elements was still stable.The silicate binding state was mainly followed by the oxidizable state and thereduced state.According to the above analysis results,the corresponding countermeasures and suggestions were put forward.
作者
董金龙
赵婷婷
王松
文斌
刘宪
芦宝平
王春涛
DONG Jin-long;ZHAO Ting-ting;WANG Song;WEN Bin;LIU Xian;LU Bao-ping;WANG Chun-tao(Department of Chemistry,Taiyuan Normal University,Jinzhong,Shanxi 030619,China)
出处
《煤炭加工与综合利用》
CAS
2021年第5期93-98,共6页
Coal Processing & Comprehensive Utilization
基金
山西省软科学项目(2016042008-1)
山西自然科学基金(201801D121064)
山西省重点研发计划项目(201803D121101)
山西省高等学校科技创新项目(2019L0790)资助。
关键词
矿区
煤矸石
重金属
迁移转化
对策
mining area
coal gangue
heavy metals
migration and transformation
countermeasures
