陶二煤矿扩大区无烟煤与天然焦划分的研究

Study on the classification of anthracite and natural coke in Tao'er coal mine expansion area

陶二煤矿扩大区为岩浆侵入区,煤质为中高变质程度的无烟煤,局部为天然焦,两者不易识别,影响了煤炭资源的合理评价和利用.通过对比研究区无烟煤与天然焦的宏观、微观煤岩鉴定,工业分析和元素分析结果,找出了两者之间明显的区分指标w(C)/w(H),Rmax,Hv,并把这3个指标组合起来建立了判别无烟煤与天然焦的数学模型,以此模型结合显微结构特征作为无烟煤与天然焦的划分方法,可以直接有效地区分无烟煤与天然焦.

Tao＇er coal mine expansion area is the magma intrusion zone. Coal is the high rank anthracite and partial natural coke, which are difficult to be identified. And the rational evaluation and utilization of coal resources are affected. Through comparative analysis of natural coke and anthracitic coal at the macro and micro coal rock identification, industrial analysis and elemental analysis, this paper identifies a clear distinction indicators of w （C）/w （H） , R and Hv, and establishes discriminant mathematical model of anthracitic coal and natural coke based on three indexes. Finally a method of classification of anthracite coal and natural coke is put forward combining micro - structural characteristics, which can distinguish anthracitic coal and natural coke directly.