CAJ | 학술논문

煤的可选性受控于煤的聚积环境。通过对内蒙古乌达矿区主采煤层9、10、12、13和15煤中黄铁矿和粘土矿物的赋存特征与煤层成因关系的研究，发现河控下三角洲平原形成的煤层中黄铁矿含量低，粘土矿物含量高，其可选性较好；潮控下三角洲平原形成的煤层，其硫分含量高，粘土矿物含量较低，其可选性中等，而在潮坪沉积基础上形成的煤层中黄铁矿和粘土矿物的可选性最差。
매적가선성수공우매적취적배경。통과대내몽고오체광구주채매층9、10、12、13화15매중황철광화점토광물적부존특정여매층성인관계적연구，발현하공하삼각주평원형성적매층중황철광함량저，점토광물함량고，기가선성교호；조공하삼각주평원형성적매층，기류분함량고，점토광물함량교저，기가선성중등，이재조평침적기출상형성적매층중황철광화점토광물적가선성최차。
The coal washability is controlled by coal accumulating area.The research on relationship between characteristics of pyrite and clay mineral distribution and the coal genesis types of main minable coal seams No.9， No.10， No.12， No.13，and No.15,in the Wuda mining area,Inner Mongolia,indicated that the coal seams formed in a fluvial-dominated delta plain are characterized by low pyrite content,high clay mineral content and better washability,but the coal seams formed in tide-dominated delta plain are characterized by high sulfur,low clay mineral content and the mid degree of washability.In addition,the washability of pyrite and clay mineral of the coal seam formed in tidal flat is the worst.