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A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING LIGHTWEIGHT AGGREGATE
PROBLEM TO BE SOLVED: To provide a method for producing lightweight aggregate which, even when primary granules are produced in a batch type kneader and the primary granules are pelletized by a rolling motion pelletizer, can prevent formation of lumpy secondary granules (green pellets).SOLUTION: A method for producing lightweight aggregate comprises: a primary granulation step of obtaining primary granules 5 by kneading a powdery aggregate raw material FA1 and water by using a batch type kneader 3; a step of supplying the primary granules to a rolling motion pelletizer 8; a secondary granulation step of obtaining green pellets 9 as secondary granules by subjecting the primary granules 5 to rolling motion granulation by the rolling motion pelletizer 8; and a step of obtaining lightweight aggregate by sintering the green pellets 9. Immediately before discharging the primary granules 5 from the kneader 3, a powdery aggregate raw material FA2 is supplied to the kneader 3 to adhere the powdery aggregate raw material to the surface of the primary granules 5.SELECTED DRAWING: Figure 1
【課題】一次造粒物をバッチ処理式の混練機内で造粒し、この一次造粒物を転動造粒機で造粒した場合であっても、塊状の二次造粒物（生ペレット）の生成を防ぐことができる軽量骨材の製造方法を提供すること。【解決手段】バッチ処理式の混練機３を用いて粉末状の骨材原料ＦＡ１と水とを混練して一次造粒物５を得る一次造粒工程と、前記一次造粒物を転動造粒機８に供給する工程と、転動造粒機８において一次造粒物５を転動造粒して二次造粒物としての生ペレット９を得る二次造粒工程と、前記生ペレット９を焼結して軽量骨材を得る工程とを含み、前記混練機３から一次造粒物５を排出する直前に前記混練機３に粉末状の骨材原料ＦＡ２を供給して一次造粒物５の表面に粉末状の骨材原料を付着させることを特徴とする軽量骨材の製造方法。【選択図】図１
METHOD FOR PRODUCING LIGHTWEIGHT AGGREGATE
PROBLEM TO BE SOLVED: To provide a method for producing lightweight aggregate which, even when primary granules are produced in a batch type kneader and the primary granules are pelletized by a rolling motion pelletizer, can prevent formation of lumpy secondary granules (green pellets).SOLUTION: A method for producing lightweight aggregate comprises: a primary granulation step of obtaining primary granules 5 by kneading a powdery aggregate raw material FA1 and water by using a batch type kneader 3; a step of supplying the primary granules to a rolling motion pelletizer 8; a secondary granulation step of obtaining green pellets 9 as secondary granules by subjecting the primary granules 5 to rolling motion granulation by the rolling motion pelletizer 8; and a step of obtaining lightweight aggregate by sintering the green pellets 9. Immediately before discharging the primary granules 5 from the kneader 3, a powdery aggregate raw material FA2 is supplied to the kneader 3 to adhere the powdery aggregate raw material to the surface of the primary granules 5.SELECTED DRAWING: Figure 1
【課題】一次造粒物をバッチ処理式の混練機内で造粒し、この一次造粒物を転動造粒機で造粒した場合であっても、塊状の二次造粒物（生ペレット）の生成を防ぐことができる軽量骨材の製造方法を提供すること。【解決手段】バッチ処理式の混練機３を用いて粉末状の骨材原料ＦＡ１と水とを混練して一次造粒物５を得る一次造粒工程と、前記一次造粒物を転動造粒機８に供給する工程と、転動造粒機８において一次造粒物５を転動造粒して二次造粒物としての生ペレット９を得る二次造粒工程と、前記生ペレット９を焼結して軽量骨材を得る工程とを含み、前記混練機３から一次造粒物５を排出する直前に前記混練機３に粉末状の骨材原料ＦＡ２を供給して一次造粒物５の表面に粉末状の骨材原料を付着させることを特徴とする軽量骨材の製造方法。【選択図】図１
METHOD FOR PRODUCING LIGHTWEIGHT AGGREGATE
軽量骨材の製造方法
KITAHARA TETSUGORO (author)
2017-04-06
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
Producing pozzolan and lightweight aggregate
| Engineering Index Backfile | 1953
| Engineering Index Backfile | 1957
| European Patent Office | 2021