A coal slime dryer is a drying device specifically designed for drying coal slime. This drying system is energy-efficient, allowing wet coal to be fully dried in an effective drying environment, thereby improving the combustion and economic value of the coal slime. Coal, as one of my country’s earliest combustion materials, will continue to be used as a primary combustion material in the future. However, it is crucial to fully utilize coal’s potential and avoid wasting resources.

Often, users of our coal slime dryers, in an effort to save on equipment costs, are unwilling to expand their operations. They simply add a few conveyors to their existing coal slime dryer equipment to increase the feed rate, hoping to increase the dryer’s capacity and meet the drying requirements. However, this approach is completely incorrect. Once a coal slime dryer is manufactured, its rated capacity is fixed. When the actual operating volume significantly deviates from the rated capacity—meaning it exceeds the rated production capacity—the drying effect of the coal slime dryer is greatly reduced. The heat supply of the coal slime dryer is limited. When the raw material is supplied too quickly or in excessive amounts, the dryer’s heat cannot keep up. As a result, the coal slime will not reach the required moisture content upon discharge.

Furthermore, the sticky substances in the coal slime will not be fully dried upon entering the dryer, which also damages the dryer’s drum wall. Therefore, the method of increasing the coal slime feed rate to increase the dryer’s capacity is flawed.