This article discusses in detail chemical composition, molecular structure, microstructure phenomena, estimate of the palaeo-stress, paleo-temperature and the strain rate to deepen the knowledge for the correlation of...This article discusses in detail chemical composition, molecular structure, microstructure phenomena, estimate of the palaeo-stress, paleo-temperature and the strain rate to deepen the knowledge for the correlation of coal deformation and metamorphism with structural environment in Xinhua Hunan by coal quality analysis, XRD and SEM methods, which provide dependable theoretical foundation for coal resource exploitation and utilization. The results show that 1) d002 value of six coal samples is from 3.36 to 3.39 nm, coal resolved itself into aphanitic graphite with the increase of coal rank during coalification, which is characterized by graphite flakes, and the crystallite size is from 50 nm to 250 nm;A certain degree of 3R-structure content is increases and the crystallite size is extend with the coalification process, but RH-structure content is decreased;2) the tectonic environment of research area belongs to the ductile-brittle deformation, which was characterized by low temperature, low stress, high strain rate;3) Tianlongshan magmatic intrusion provided heat source, its side-extrusion made the molecules structure of coal ordering, distance between layers decreased, finally it caused the formation of aphanitic graphite.展开更多
以吉林汪清地区某隐晶质石墨选矿精矿为原料,采用QWJ气流涡旋粉碎机成套系统进行球形化处理,共整形16次,最佳整形次数为6次。并对球形化石墨进行提纯,采用HF和HCl的混酸法确定混酸与石墨液固比5 m L/g,HF体积分数33%,反应温度50℃,时间3...以吉林汪清地区某隐晶质石墨选矿精矿为原料,采用QWJ气流涡旋粉碎机成套系统进行球形化处理,共整形16次,最佳整形次数为6次。并对球形化石墨进行提纯,采用HF和HCl的混酸法确定混酸与石墨液固比5 m L/g,HF体积分数33%,反应温度50℃,时间3 h,浸出4次,得到最终精矿固定碳含量99. 82%。展开更多
文摘This article discusses in detail chemical composition, molecular structure, microstructure phenomena, estimate of the palaeo-stress, paleo-temperature and the strain rate to deepen the knowledge for the correlation of coal deformation and metamorphism with structural environment in Xinhua Hunan by coal quality analysis, XRD and SEM methods, which provide dependable theoretical foundation for coal resource exploitation and utilization. The results show that 1) d002 value of six coal samples is from 3.36 to 3.39 nm, coal resolved itself into aphanitic graphite with the increase of coal rank during coalification, which is characterized by graphite flakes, and the crystallite size is from 50 nm to 250 nm;A certain degree of 3R-structure content is increases and the crystallite size is extend with the coalification process, but RH-structure content is decreased;2) the tectonic environment of research area belongs to the ductile-brittle deformation, which was characterized by low temperature, low stress, high strain rate;3) Tianlongshan magmatic intrusion provided heat source, its side-extrusion made the molecules structure of coal ordering, distance between layers decreased, finally it caused the formation of aphanitic graphite.
文摘以吉林汪清地区某隐晶质石墨选矿精矿为原料,采用QWJ气流涡旋粉碎机成套系统进行球形化处理,共整形16次,最佳整形次数为6次。并对球形化石墨进行提纯,采用HF和HCl的混酸法确定混酸与石墨液固比5 m L/g,HF体积分数33%,反应温度50℃,时间3 h,浸出4次,得到最终精矿固定碳含量99. 82%。
