煤田地质与勘探2017，Vol.45Issue(2)：8-13,6.DOI:10.3969/j.issn.1001-1986.2017.02.002
陕北横山矿区延安组3-1煤层Sr和Ba的分布及赋存模式
Distribution and mode of occurrence of Jurassic 3-1coal from Hengshan
摘要
Abstract
The distribution and mode of occurrence of Sr and Ba are important to study the coal seam coal-forming palaeosedimentary environment and coal clean utilization. The distribution and mode of occurrence of Sr and Ba in the 24 main mined seams from 5 coal mines in Hengshan were studied using proximate analysis, ultimate analysis, mineral constituent analysis, correlation analysis, and sequential extraction experiment. 75% coal sample were ul-tra-low ash coal. The total sulfur content of about 96% coals was more than 1%. Kaolinite, pyrite and calcite were main mineral composition in the studied coals. Sr and Ba were enriched in more than 75% coals, and the content of Sr and Ba was higher in the north than in the south of the study area. All results showed that Sr and Ba were mainly carried by celestite, barite, strontium, witherite, calcite and aragonite in the studied coals. The occurrence of min-eral containing Sr and Ba in the coal seam causes the enrichment of Sr and Ba.关键词
Sr/Ba/赋存模式/侏罗纪/延安组/煤Key words
Sr/Ba/mode of occurrence/Jurassic/Yan'an Formation/coal分类
矿业与冶金引用本文复制引用
王华,杜美利,张国涛,李梅..陕北横山矿区延安组3-1煤层Sr和Ba的分布及赋存模式[J].煤田地质与勘探,2017,45(2):8-13,6.基金项目
国家自然科学基金项目(201141172142) National Natural Science Foundation of China(201141172142) （201141172142）
