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目前用煤作为能源是比较昂贵的。由于世果上煤炭储量丰富,所以从长远看,煤还是将来能满足需要的唯一可靠的能源。 英国绝大部分煤炭是深井开采,其成本很高,而且原煤质量低劣,大部需要经过洗选才能满足用户使用要求。由于选煤厂投资和生产费用高,特别是在煤泥水处理方面的费用大,所以近十年来选煤成本几乎增加一倍。降低选煤成本,就需要提高洗选效率,以提高精煤回收率。下面就各种洗选方法的效率及其对选煤经济效果的影响作一阐述。
Currently using coal as energy is more expensive. Because of the abundant coal reserves in the world, in the long run coal is the only reliable source of energy that can meet the needs in the future. The vast majority of coal in the UK is mined in deep wells, which is costly and has poor raw coal quality. Most of the coal needs to be washed to meet user requirements. Due to the high investment and production costs of the coal preparation plant, especially in the treatment of slime water, the cost of coal preparation nearly doubled in the last ten years. Reduce the cost of coal preparation, you need to improve the washing efficiency, in order to improve the recovery of coal. The following is a description of the efficiency of various washing methods and their impact on the economic effects of coal preparation.