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浮选是当前精选细粒煤泥最有效的方法,对于选煤厂煤泥水处理也起着重要的作用,所以,在许多产煤国家广泛应用。据报道,英国浮选处理煤泥量占原煤总入选量的4.7％,美国为7.7％,联邦德国为8％,法国为9.3％,苏联每年浮选煤泥量超过4000万t,在精煤产品中约有1/5是浮选精煤。在我国约有八十多个选煤厂设有浮选,年总处理量接近2000万t。随着采煤机械化的发展,原煤中煤泥含量会日益增加,同时用户要求进一步提高精煤质量、降低灰分、改善环境污染,
Flotation is currently the most effective selection of fine-grained slurry, coal preparation plant for the slime water treatment also plays an important role, therefore, widely used in many coal-producing countries. According to reports, the British flotation treatment of coal accounted for 4.7% of the total selected coal, 7.7% in the United States, the Federal Republic of Germany was 8%, France 9.3%, the Soviet Union flotation each year more than 40 million tons of slime, About 1/5 of the product is flotation coal. In China, there are about 80 coal preparation plants with flotation, with a total annual handling capacity of nearly 20 million tons. With the development of mechanization of coal mining, the content of slime in the raw coal will increase day by day. At the same time, the users request to further improve the quality of the clean coal, reduce the ash content and improve the environmental pollution,