中国煤中硒的分布特征及其可选性研究  

The study on distribution of selenium in Chinese coals and its washability

作　　者：白向飞[1] 李文华[1] 陈文敏[1] 

机构地区：[1]煤炭科学研究总院北京煤化学研究所,北京100013

出　　处：《煤炭学报》2003年第1期69-73,共5页Journal of China Coal Society

基　　金：国家重点基础研究发展规划项目 (G19990 2 2 10 2 ) ;社会公益研究专项资金资助项目 ( 2 0 0 1DIB10 0 47)

摘　　要：通过对中国煤种资源数据库中 10 18个煤样中硒含量数据的统计分析 ,以及对若干煤田煤中硒赋存状态的试验研究 ,讨论了中国煤中硒的分布和赋存特征 .认为煤层是地球上硒富集的主要地质体 ,中国煤中硒含量总体偏高 .硒在煤中不同组分中的赋存状态较复杂 ,“高硒煤”和“低硒煤”中硒赋存特征差异较大 .应加强煤中硒在煤炭洗选、气化等加工和利用过程中迁移转化规律的研究 .This paper presents the distribution and occurrence and washability of selenium in Chinese coals based on 1 018 analysis from Chinese Coal Resource Database and by means of float-sink experiments. The authors find that coals are high-selenium geological bodies relatively in the crust. In general, the average concentration of selenium in Chinese coals is higher than that in the world coal. The modes of occurrences of selenium in macerals are complex and different from one coal to another, especially between high-selenium and low-selenium coals. The studies on migration and evolution of selenium during preparation and gasification of coal should be strengthened.

关 键 词：可选性 煤 硒 分布 赋存状态 迁移规律 

分 类 号：TD94[矿业工程—选矿]