Coal Washability studies
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Washability characteristics of coal are generated from float/sink analysis of core samples, as mined coal samples, or from preparation plant feed samples. In addition to the float/sink analysis, SGS can perform froth recovery testing on finer size material. If a coal contains a high percentage of middlings material, SGS can perform the crushing studies required to determine if additional yield can be obtained by crushing and liberating coal from the host rock. SGS coal washability studies, including float/sink analysis, can be done on samples ranging in size from bulk washability samples (over 1 ton) to bench-scale size samples (2-10kg). These analysis can be done over a range of densities (S.G.1.3 to 2.25) and on coarse to fine coal separations. These studies closely follow American Society of Testing and Materials (ASTM) test methods for determining coal washability characteristics. Data from such studies help determine:
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