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WhatsApp: +86 18838072829WEBJul 1, 2009 · Section snippets Samples. Clean coal sample of Nantun (China) coal was used for the experiments. Massive coal samples were crushed by mechanical crusher and sieved to obtain the to mm size fraction (a 1:1 mixture of – and – mm) and the fractions with specific gravities () of to were selected by a sink .
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WhatsApp: +86 18838072829WEBMay 15, 2019 · Coal samples from the La Guajira coalfield were collected from the Cerrejon mine, which is the single largest coal producer in Colombia with an output entirely for export. ... (4 ") and were initially staged crushed to approximately 1 mm using a laboratory jaw crusher followed by a roll crusher. After staged crushing, the material .
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