摘要
云南东部晚二叠世煤田老厂矿区无烟煤中砷的含量为０．１×１０－６～８６．２×１０－６，平均６．２×１０－６，为区域背景含量的３．４倍。煤中砷的分布有两种成因类型：陆源沉积型、后期矿化叠加型，后者的含砷丰度显著高于前者。通过浮选试验，对两种类型煤中砷的赋存形态、主要载体矿物及含砷丰度进行了分析和计算。
In the anthracite of Laochang mining area in Late Permian coal field in eastem Yunnan,the content of arsenic ranges in 01×10-6～862×10-6,averaging 62×10-6,being 34 times to the regional background value.The distribution of arsenic in coal has two genetic types:that is,terrigenous sediment and addition of epigenetic mineralization,and the arsenic abundance in the later is higher obviously than that in the former.Through the flotation test,the occurrence form,main carrier mineral and arsenic abundance in both types of coal are analyzed and calculated.Based on the measured data,the washability and volatile property in coal combustion of arsenic are evaluated.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1998年第4期8-13,共6页
Coal Geology & Exploration
基金
中国统配煤矿总公司资助项目
关键词
砷
成因类型
赋存形式
晚二叠世
无烟煤
煤矿床
arsenic
genetic type
occurrence form
Late Permian
Yunnan
Laochang mining area
