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我国原煤大部都未经洗选,造成能源浪费。文中提出应建筛选厂和选煤厂,原煤经分级或洗选后销售;老厂则采取挖潜,改变产品结构等措施来提高选煤厂的经济效益。
Most of our country’s coal has not been washed, resulting in energy waste. It is proposed that a screening plant and a coal preparation plant should be built, and the raw coal is classified or washed for sale. The old plant adopts measures such as tapping the potential and changing the product structure to improve the economic efficiency of the coal preparation plant.