CEMENT COMPOSITION PRODUCTION METHOD

The present invention provides a production method for a cement composition with which a large amount of coal ash having a high carbon content can be used, and fuel costs can be reduced. More specifically, this production method for a cement composition includes: a cement clinker calcination step fo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KITAZAWA KENSUKE, KOBAYAKAWA MAKOTO, YAMAMOTO YASUSHI, WADACHI NORIKAZU, HIRAO HIROSHI, KUBOTA OSAMU, UENOYAMA YOSHIYUKI, IKEDA SUMIHITO, HAYASHI KENSUKE, KUROKAWA DAISUKE
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DISPOSAL OF SOLID WASTE GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS RECLAMATION OF CONTAMINED SOIL SOIL REFRACTORIES SLAG TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	The present invention provides a production method for a cement composition with which a large amount of coal ash having a high carbon content can be used, and fuel costs can be reduced. More specifically, this production method for a cement composition includes: a cement clinker calcination step for calcinating a cement clinker having a specified cement mineral composition calculated using Bogue's equations; a carbon removal step in which a moulded material obtained by moulding a composition including coal ash, a binder, and water is introduced into an area of a cooler having a temperature in the range of 800-1400�C and mixed with the cement clinker, in a ratio of 0.2-100.0 parts by mass of the moulded material to 100 parts by mass of the cement clinker, and the carbon and organic substances included in the coal ash in the moulded material are removed by combustion; and a mixture grinding step for grinding a mixture (a) of the cement clinker and the moulded composition, or, a mixture (b) obtained by adding slurry to mixture (a).