[英刊《煤炭文摘》报道]本文介绍了美国能源部匹兹堡能源技术研究中心采用旋流器选别微细粒磁铁矿(—10μm)的8次实验室试验的情况,以研究选别600×38μm煤流程的特性。早先的试验是在介质浓度比较低的情况下(1.30),采用直径相同(76mm)的旋流器进行的。而上述试验均是在介质浓度较高(1.50)的情况下进行的。本文还研究了下列因素对旋流器分选效果的影响:入口压力、磁 This article describes eight laboratory tests using a cyclone to select fine-grained magnetite (-10 μm) from the Pittsburgh Energy Technology Research Center of the U.S. Department of Energy to study the effects of selecting 600 × 38μm coal flow characteristics. Earlier experiments were conducted with the same medium (76 mm) cyclone in the case of lower medium concentrations (1.30). The above experiments were carried out with higher medium concentration (1.50). The paper also studied the following factors on the cyclone separation effect: inlet pressure, magnetic