摘要
老厂矿区无烟煤中的汞有两种成因类型：陆源沉积型和后期矿化叠加型，后者的含汞丰度显著高于前者。低硫煤中汞的主要载体为粘土矿物，高硫煤中为黄铁矿；有机汞含量较低并随煤中黄铁矿含量及其含汞性的增高而增高。根据实测数据计算了不同类型煤中各物质成分的汞丰度；对煤中汞的可造性作了初步评价；预测了燃煤电站排气中汞的平均浓度。
here two genetic types of mercury distribution in coal seams of Laochang mining area ineastern Yunnan: continentel deposit (A) and addition of epigentic mineralization(B). The richness in thelatter is remarkably higher than that in the former. In the low - sulfur coal, the predominant carrier ofmercury is clay mineral. In the high - sulfur coal, the primary carrier of mercury is pyrite. The organicmercury concentration is lower. With the increase of pyrite content in coal and mercury concentration, itincreases also. Based on the analytic data, mercury richness distribution in various coal seams with differentdistribution types is calculated. The wash-out possibility of mercury in coal has been preliminary evaluated.The average mercury concentration of exhaust gas in thermal power plant has been also forecasted in thispaper.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1994年第3期17-22,共6页
Coal Geology & Exploration
基金
中国统配煤矿总公司资助
关键词
煤
汞
成因
类型
赋存状态
ercury
genetic types
modes of presense
coal seam
later Permian
Laochang mining area
