本文从理论上论证了选煤厂获得最佳技术经济效果的条件,即在等λ(等分界灰分)原则下进行分选。只要按等λ分选,不必顾虑各作业的产品质量不平衡性,因为掺配之后总产品的质量合格,就会获得最佳的技术经济效果。此外,本文还论述了在生产实践中如何坚持这种获得最佳技术经济效果的条件。最后指出了在不同情况下,选煤厂为了获得最佳经济效益所应坚持的原则和应当采取的措施 In this paper, the conditions for obtaining the best technical and economic results for coal preparation plant are demonstrated in theory, that is, sorting is carried out under the principle of equal λ (equal boundary ash). As long as sorting by equal λ, do not have to worry about the imbalance of the product quality of various operations, because after the blending of the total quality of the product, you will get the best technical and economic results. In addition, this article also discusses how to insist on this production technology to obtain the best technical and economic conditions. Finally, it points out the principle that the coal preparation plant should stick to in order to get the best economic benefit and the measures it should take in different situations