煤的物理选是将煤先破碎或粉碎,然后把矿物相从有机相中分离出来。煤的破碎虽然破碎和磨矿用的都是些高度发达并得到广泛应用的机械设备,但对颗粒破碎的科学原理并不是完全了解,设备的选择主要是基于经验性试验和操作经验。遗憾的是这类设备效率低,大多数能量都转换成为热能。对于细磨来说,能量利用至 The physical choice of coal is to crush or crush the coal first, and then separate the mineral phase from the organic phase. Broken coal Although the crushing and grinding are all highly developed and widely used machinery and equipment, but the scientific principle of particle crushing is not fully understood, the choice of equipment is mainly based on empirical testing and operational experience. Unfortunately, such devices are inefficient and most of the energy is converted to heat. For fine grinding, energy is utilized