High capacity fine coal cleaning using an enhanced gravity concentrator

Recent research has shown that enhanced gravity separators provide the oppo rtunity to effectively clean 1 mm x 37 micron coal. A detailed experimental program was performed on a continuous Falcon Concentrator, which was found to achieve separations at mass throughput capacity values in excess of 75 tonnes/hour. The apparent particle separation density for 1 mm x 75 micron coal was about 1.60 with relatively high efficiency (Ep = 0.12). Typical as h and sulfur rejection values of 85% and 70%, respectively, were achieved w hile recovering 85% of the combustible material. Metallurgical and efficien cy data from the evaluation are presented in this publication. (C) 1998 Els evier Science Ltd. All rights reserved.