用筛浮试验评价煤的可选性,往往受到很多条件限制。为了适应煤田地质勘探工作的需要,我们对用煤岩方法进行煤可选性鉴定的可能性进行了研究,并将其结果应用于生产。实践表明,用煤岩方法能够满足煤可选性评价要求。现将我们的工作方法及应用结果简单汇报如下:从煤岩学的观点看,影响煤可选性的主要因素是煤物质中的岩、矿成分,数量、大小 The sieve float test to evaluate the coal’s selectivity is often subject to many conditions. In order to meet the needs of geological exploration in coalfields, we conducted a study on the possibility of using coal-rock method to identify coal and applied the results to production. Practice shows that the method of coal and coal can meet the requirements of coal evaluation. Now our working methods and application results are briefly reported as follows: From the perspective of coal and rock science, the main factors that affect coal selectivities are rock and mineral composition, quantity, size