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分别采用BET法、BJH法和HK法测定了石煤原矿、石煤750℃焙烧渣、1 050℃焙烧渣3种样品的比表面积、中孔和微孔分布.结果表明,石煤原矿中主要以中孔为主,最可几孔径为4 nm,主要为墨水瓶状孔;750℃焙烧3 h,由于有机质氧化,原矿中微孔减少,中孔增加;1 050℃焙烧3 h,孔数量急剧减少,大量中孔和微孔消失,只有少量大孔,比表面积显著减小.
The BET, BJH and HK methods were used to determine the specific surface area, mesopore and micropore distribution of three kinds of samples, including stone coal raw coal, calcined stone coal at 750 ℃ and calcined slag at 1050 ℃ .The results show that the major Mainly in mesopores, the most probable pore diameter of 4 nm, mainly ink bottle-shaped hole; 750 ℃ calcined 3 h, due to oxidation of organic matter, the pores in the ore to reduce the mesopores increased; 1 050 ℃ calcined 3 h, the number of holes A sharp decrease, a large number of mesopores and micropores disappear, only a small amount of macropores, the specific surface area was significantly reduced.