METHOD FOR STORING UPGRADED COAL, AND GRAIN-SIZE-CONTROLLED COAL

A method for storing upgraded coal, which is economical and whereby it becomes possible to prevent the spontaneous ignition of piles; and grain-size-controlled coal which rarely undergoes spontaneous ignition during storage. The method for storing upgraded coal includes piling up granular coal conta...

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Bibliographische Detailangaben
Hauptverfasser: MUROTA MOTOHARU, YAMAMOTO SEIICHI, WATANABE NAOTO, TAKAHASHI YOICHI, SHIGEHISA TAKUO
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method for storing upgraded coal, which is economical and whereby it becomes possible to prevent the spontaneous ignition of piles; and grain-size-controlled coal which rarely undergoes spontaneous ignition during storage. The method for storing upgraded coal includes piling up granular coal containing upgraded coal, wherein the content of grains each having a grain size of 10 mm or less in the coal is 50 mass % or more. It is preferred that the content of grains each having a grain size of 1 mm or less is 25 mass % or more and the content of grains each having a grain size of 0.15 mm or less is 7 mass % or more in the coal.