基于摩擦电选的微粉煤提质试验研究

摘要

To explore the tribo-electrostatic separation effects of various coal samples, and determine the appropriate composition and relative humidity of feeding size, a series of experiments were conducted. The experimental results showed: compared with bituminous coal and lignite, anthracite had better separation effects, and the mixture of lignite and other coal samples had worse separation effects; when the air relative humidity was less than 80%, the tribo-.electrostatic separator worked well with considerable separation effects; the feeding containing 70% particles less than 0.074 mm brought about an excellent separation effects.%为探索不同煤样的摩擦电选效果、确定合适的入料粒度组成和相对湿度界限进行了一系列的试验，试验得出：相对于烟煤和褐煤，无烟煤的摩擦电选效果较好，与褐煤混合后的煤样分选效果会变差；当空气的相对湿度小于80％时，电选机正常工作，分选效果较好；入料粒度组成达到70％小于0．074mm时，可使分选效果保持在一个较高的水平。