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最早采用恩沃罗—克里尔浓缩机的是美国钢铁公司所属的一大型选煤厂(详见本刊1976年第2期)。该机的显著特点是浓缩速度快,可为普通浓缩机的2—30倍。在入料固体含量为15%时,所产溢流甚洁净,其固体含量可低达20ppm,而底流固体含量可高达60%。从占地面积来看,该机仅为普通浓缩机的1/10。由于物料在机内滞留时间短,易于进行控制。而其最大特点是该机工作效率不受入料粒度变化的影响,粗、细粒级均可有效地加以浓缩。
The earliest adopters of Envoor-Creole concentrator were a large coal preparation plant owned by U.S. Steel Corporation (see Issue 2, 1976). The salient feature of this machine is the speed of concentration, which can be 2-30 times of ordinary thickener. When the feed solids content is 15%, the overflow produced is very clean, with a solids content as low as 20ppm and an underflow solids content of up to 60%. From the area of view, the machine is only 1/10 of the normal thickener. As the material in the machine residence time is short, easy to control. The most important feature is that the working efficiency of the machine is not affected by the change of the feed grain size. The thick and fine grade can be effectively concentrated.