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CONCRETE EXPANSIVE ADMIXTURE USING LOW CARBON LOW BURNING CEMENT CLINKER
The present invention relates to a concrete expansive admixture using low-carbon low temperature-calcined cement clinker to increase quality of concrete. According to one embodiment of the present invention, a method for manufacturing a concrete expansive admixture using low-carbon low temperature-calcined cement clinker comprises the following steps: pulverizing clinker for manufacturing cement having a calcium sulfoaluminate (4CaO·3Al_2O_3·SO_3) content of 57.0 to 63.0 wt%, which is manufactured by including low-grade limestone having a CaO content of 44.0 to 47.0 wt%, flue gas desulfurization gypsum, which is a by-product of bituminous coal-fired power plant, having a SO_3 content of 35.0 to 45.0 wt% and alumina sludge, which is generated in a rare metal recovery process, having an Al_2O_3 content of 65.0 to 75.0 wt%; and mixing anhydrite and slaked lime powder in the pulverized clinker to manufacture an expanding agent, wherein the clinker is 20 to 40 wt%, anhydrite 50 to 70 wt%, and slaked lime powder is 5 to 20 wt%, so that the sum is 100 wt%.
본 발명의 일 실시예에 따른 저탄소 저온 소성형 시멘트 클린커를 이용한 콘트리트 팽창재의 제조방법은, CaO의 함량이 44.0 내지 47.0중량%인 저품위 석회석, 유연탄 화력발전소의 부산물인 SO3의 함량이 35.0 내지 45.0중량%인 배연탈황석고 및 희귀금속 회수공정에서 발생하는 Al2O3의 함량이 65.0 내지 75.0중량%인 알루미나 슬러지를 소스로 포함하여 제조된, 칼슘설포알루미네이트(4CaO·3Al2O3·SO3) 함량이 57.0 내지 63.0중량%인 시멘트 제조용 클린커를 분쇄하는 단계; 및 상기 분쇄된 클린커에 무수석고 및 소석회 분말을 혼합하되, 상기 클린커가 20 내지 40중량%, 무수석고 50 내지 70 중량%, 소석회가 5 내지 20 중량%이며, 그 합이 100중량%가 되도록 혼합하여 팽창재를 만드는 단계;를 포함한다.
CONCRETE EXPANSIVE ADMIXTURE USING LOW CARBON LOW BURNING CEMENT CLINKER
The present invention relates to a concrete expansive admixture using low-carbon low temperature-calcined cement clinker to increase quality of concrete. According to one embodiment of the present invention, a method for manufacturing a concrete expansive admixture using low-carbon low temperature-calcined cement clinker comprises the following steps: pulverizing clinker for manufacturing cement having a calcium sulfoaluminate (4CaO·3Al_2O_3·SO_3) content of 57.0 to 63.0 wt%, which is manufactured by including low-grade limestone having a CaO content of 44.0 to 47.0 wt%, flue gas desulfurization gypsum, which is a by-product of bituminous coal-fired power plant, having a SO_3 content of 35.0 to 45.0 wt% and alumina sludge, which is generated in a rare metal recovery process, having an Al_2O_3 content of 65.0 to 75.0 wt%; and mixing anhydrite and slaked lime powder in the pulverized clinker to manufacture an expanding agent, wherein the clinker is 20 to 40 wt%, anhydrite 50 to 70 wt%, and slaked lime powder is 5 to 20 wt%, so that the sum is 100 wt%.
본 발명의 일 실시예에 따른 저탄소 저온 소성형 시멘트 클린커를 이용한 콘트리트 팽창재의 제조방법은, CaO의 함량이 44.0 내지 47.0중량%인 저품위 석회석, 유연탄 화력발전소의 부산물인 SO3의 함량이 35.0 내지 45.0중량%인 배연탈황석고 및 희귀금속 회수공정에서 발생하는 Al2O3의 함량이 65.0 내지 75.0중량%인 알루미나 슬러지를 소스로 포함하여 제조된, 칼슘설포알루미네이트(4CaO·3Al2O3·SO3) 함량이 57.0 내지 63.0중량%인 시멘트 제조용 클린커를 분쇄하는 단계; 및 상기 분쇄된 클린커에 무수석고 및 소석회 분말을 혼합하되, 상기 클린커가 20 내지 40중량%, 무수석고 50 내지 70 중량%, 소석회가 5 내지 20 중량%이며, 그 합이 100중량%가 되도록 혼합하여 팽창재를 만드는 단계;를 포함한다.
CONCRETE EXPANSIVE ADMIXTURE USING LOW CARBON LOW BURNING CEMENT CLINKER
저탄소 저온 소성형 시멘트 클린커를 이용한 콘트리트 팽창재
MIN KYUNG SO (author) / LEE SE YONG (author) / LEE YUN CHEOL (author) / PARK DONG CHEOL (author) / CHOI SUNG BUM (author)
2021-08-18
Patent
Electronic Resource
Korean
IPC:
C04B
Kalk
,
LIME
CONCRETE EXPANSIVE ADMIXTURE USING LOW CARBON LOW BURNING CLINKER FOR MANUFACTURING CEMENT
European Patent Office | 2022
| European Patent Office | 2019