Raw composition for eco-cement clinker, eco-cement clinker using the raw composition and the eco-cement
(57) The present invention relates to eco-cement, which is economically and environmentally friendly by utilizing urban/industrial waste or industrial by-products as a raw material for cement, while providing a place to utilize fly ash, especially household waste. Eco-cement It relates to a clinker mineral composition and eco-cement.
The raw material composition for eco-cement clinker according to the present invention is composed of municipal waste incineration ash, sewage sludge powder, limestone powder, and Busan gypsum powder, and the chemical composition of the composition is 40 to 55% by weight of CaO, SiO2 15-20% by weight, Al2O3 10-15% by weight, SO3 2 to 6% by weight, 1 to 10% by weight of chloride, Fe2O3 characterized in that it comprises 3 to 5% by weight, MgO 1 to 5% by weight. Here, the limestone powder may be applied as a substitute for waste limestone powder and waste concrete powder, and in some cases, the raw material composition may further include one or more of circulating fluidized bed boiler ash (CFBC-ash), electric furnace reduction slag, steelmaking slag, and red mud. can When the raw material composition having such a composition is fired, 12 to 30% by weight of hauyne, 5 to 20% by weight of alinite, 40 to 70% by weight of belite, and 5 to 10% by weight of ferrite It can be made of an eco-cement clinker mineral composition containing weight percent. The eco-cement clinker mineral composition prepared in this way is prepared as eco-cement when it is appropriately mixed and pulverized with Busan gypsum and silica/alumina industrial by-products.
(71) With M-Tech Co. Ltd. (KR); SK Ecoplant Co Ltd (KR)