陕西原煤中的氟含量及空间分布

The fluorine content and spatial distribution in Shaanxi's coal

对陕西6大产煤区中64个煤矿进行采样、分析,得到陕西原煤中氟含量及其空间分布特征,陕西原煤中氟含量的几何平均值为84 mg/kg;陕西原煤中氟含量的空间分布差异不大,南部地区煤中氟含量比北部地区煤中氟含量高;按照成煤时代划分,陕西原煤中氟含量由高到低依次为陕南煤田>渭北石炭二叠纪煤田>陕北石炭二叠纪煤田>陕北三叠纪煤田>黄陇侏罗纪煤田>陕北侏罗纪煤田。

The six major coal-producing area in Shaanxi64 coal mine sampling,analysis,Shaanxi coal fluorine content and its spatial distribution,the geometric mean of Shaanxi coal fluorine content of 84 mg /kg,the highest value of the sample collected in Ankang Langao County(667 mg/kg),the minimum value of the sample collected in Jinjie(40mg / kg);space Shaanxi coal fluorine content distribution is insignificant,the fluorine content in the southern region coal is higher than the northern region coal;divided according to age into the coal,the amount of fluorine in Shaanxi coal descending order southern Shaanxi Coalfield > Weibei Carboniferous-Permian coalfield > Carboniferous-Permian in northern Shaanxi Coalfield > Triassic in northern Shaanxi Coalfield > Huanglong Jurassic Coal > Jurassic Coalfield in northern Shaanxi.