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Binder selection in coal briquetting industry

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We looked into the burning characteristics of coal briquettes from a combustion kinetics point of view, which showed that coal briquettes ignition efficiency and effectiveness of combustion reaction was considerably dependent on the binder type, amount of binder and water addition. Coal tar pitch and petroleum residues are the common binders used for the coal briquetting process. These binders give high strength briquettes but they have a hazardous effect on human beings and are involved in environmental pollution. Environmentally safe binders like molasses etc, give briquettes of comparatively low strength. Studies showed that using humic acid as a binder can solve these problems to some extent. The optimum conditions required for high strength briquettes were found to be heat treatment of 1h at 165℃, 5% humic acid as a binder and a moisture content of 10.5%.
coal briquette machine

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