PROCESS AND SYSTEM FOR DRY COAL SEPARATION BY COAL GANGUE REMOVAL
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United States of America Patent
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Issued Date -
Oct 2, 2014
app pub date -
Jul 3, 2012
filing date -
Oct 27, 2011
priority date (Note) -
Abandoned
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Abstract
The process for coal separation includes two steps of size grading and oversize raw coal separating. A size range is obtained through size grading, then the obtained raw coal is separated by a sensor system, and coal briquettes with high impurity contents are blown into an impurity chamber through high-speed compressed air, thus improving the separating accuracy and efficiency. The system for coal separation includes a dry screening machine, an oversize raw coal conveying chute, a sensor system, a control system, nozzles and a flow division chamber. The tail end of the dry screening machine is connected with the charge end of the chute; the sensor system and the discharge end of the chute are correspondingly arranged; the flow division chamber is arranged below the chute; and the nozzles operated and controlled by the control system are arranged between the discharge end of the chute and the flow division chamber.
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