METHOD FOR RECOVERING CEMENT RAW MATERIAL FROM WASTE CONCRETE: Fid-Bau Portal

METHOD FOR RECOVERING CEMENT RAW MATERIAL FROM WASTE CONCRETE

TAKIZAWA AKIRA / SUGISAWA KEN / ICHINOTSUBO YUKITERU / YOSHIKAWA TOMOHISA

To provide a method for recovering high-grade cement raw materials from waste concrete.SOLUTION: A method for recovering cement raw materials from waste concrete includes: a crushing step for crushing waste concrete; a classifying step for separating the crushed waste concrete into three or more classified substances; and a specific gravity sorting step for sorting the crushed waste concrete for each classified substance and separating the same into a high specific gravity substance and a low specific gravity substance. In the specific gravity sorting step, the low specific gravity substance separated from the classified substance having a particle diameter less than a predetermined particle diameter is recovered.SELECTED DRAWING: None

【課題】廃コンクリートから高品位のセメント原料を回収する方法を提供する。【解決手段】廃コンクリートを破砕する破砕工程と、廃コンクリート破砕物を、３以上の分級物に分ける分級工程と、分級物ごとに比重選別し、高比重物と低比重物とに分離する比重選別工程を含み、比重選別工程において、所定の粒径未満の分級物から分離された低比重物を回収する、廃コンクリートからのセメント原料回収方法。【選択図】なし

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