A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
β−２ＣａＯ・ＳｉＯ２の製造方法
A process for producing ß-2CaO·SiO2, comprising: selecting a raw material which comprises CaO and SiO2 as the main components and has a CaO/SiO2 molar ratio of 1.8 to 2.2 and which, after being heated at 1000°C, exhibits a total content of Al2O3 and Fe2O3 of less than 5 mass%, and a total content of boron, phosphorus, barium, strontium and molybdenum of less than 0.5 mass% in terms of oxides; preparing, from the raw material, a mixture wherein the ratio of particles passing through a screen having 150-µm openings is 90 mass% or higher; granulating the mixture; and firing the granulated mixture at a firing temperature of 1350 to 1600°C in a rotary kiln in which brick or mortar is used on the inside surface of the firing zone. The brick or mortar is at least one selected from the group consisting of silica-alumina bricks comprising 45 to 80 mass% of Al2O3 and 20 to 55 mass% of SiO2, silica-alumina mortars comprising 25 to 80 mass% of Al2O3 and 20 to 75 mass% of SiO2, magnesia bricks comprising at least 85 mass% of MgO, and magnesia mortars comprising at least 85 mass% of MgO.
β−２ＣａＯ・ＳｉＯ２の製造方法
A process for producing ß-2CaO·SiO2, comprising: selecting a raw material which comprises CaO and SiO2 as the main components and has a CaO/SiO2 molar ratio of 1.8 to 2.2 and which, after being heated at 1000°C, exhibits a total content of Al2O3 and Fe2O3 of less than 5 mass%, and a total content of boron, phosphorus, barium, strontium and molybdenum of less than 0.5 mass% in terms of oxides; preparing, from the raw material, a mixture wherein the ratio of particles passing through a screen having 150-µm openings is 90 mass% or higher; granulating the mixture; and firing the granulated mixture at a firing temperature of 1350 to 1600°C in a rotary kiln in which brick or mortar is used on the inside surface of the firing zone. The brick or mortar is at least one selected from the group consisting of silica-alumina bricks comprising 45 to 80 mass% of Al2O3 and 20 to 55 mass% of SiO2, silica-alumina mortars comprising 25 to 80 mass% of Al2O3 and 20 to 75 mass% of SiO2, magnesia bricks comprising at least 85 mass% of MgO, and magnesia mortars comprising at least 85 mass% of MgO.
METHOD FOR PRODUCING CALCINED PRODUCT CONTAINING γ-2CAO∙SIO2
| European Patent Office | 2023
Properties of high-alumina cement containing 2CaO-Al2O3-SiO2
| Tema Archive | 1999
METHOD FOR PRODUCING CALCINED PRODUCT COMPRISING .GAMMA.-2CAO SIO2
| European Patent Office | 2023
METHOD FOR PRODUCING CALCINED PRODUCT CONTAINING ?-2CAO?SIO2
| European Patent Office | 2025