摘要
The compound dry cleaning principle is briefly described.A beneficiation test on South African coal was conducted using a model compound dry cleaning apparatus.Excellent results were obtained and the optimum operating parameters were determined.They are：an amplitude of 3.0 mm,a motor frequency of 47.5 Hz,an air volume of 50%,a transverse angle of 7°,and a longitudinal angle of-2°.These conditions yield a clean coal containing 11%ash and a coal production of 75%.The organic efficiency,η,is 95.86%.These results show that the South African coal can be separated effectively by compound dry cleaning,which will popularize the compound dry cleaning method.
复合干燥清洗原则简短被描述。南非的煤上的 beneficiation 测试用模型混合物被进行干燥清洗仪器。优秀结果被获得，操作参数的最佳是坚定的。他们是：3.0 公里， 47.5 Hz 的马达频率， 50% 的空气体积， 7 掳的一个横向的角度，和一个纵的角度的一个振幅 ? 2 掳。这些条件产出包含 11% 灰和 75% 的煤生产的干净的煤。器官的效率，畏，是 95.86% 。这些结果证明南非的煤能被复合干燥清洗有效地分开，它将推广复合干燥清洗方法。
基金
financially supported by the National Natural Science Foundation of China(Nos.90510002 and 50921002)
the Fundamental Research Funds for the Central Universities (China University of Mining and Technology)(No.2010ZDP01A06).
