原煤中矿物质分布规律的研究

Based on the coal samples drifting - laser particle size, ash content with the size variation was obtained. By calculation and analysis to the experimental data, the explanation to causes of phenomenon was given. After the processing of coal samples, the results showed that the higher the rank of metamorphism, the lower its inherent mineral content was; mineral in coal was mainly existended in the form of independence and it had little relationship to do with metamorphism rank.