Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
γ−２ＣａＯ・ＳｉＯ２の製造方法
Provided is a method for producing ?-2CaO·SiO2, by which it is possible to obtain a product having high purity and stable product quality with high industrial productivity. The present invention is characterized by using CaO and SiO2 as primary components at a CaO/SiO2 molar ratio of 1.8 to 2.2, heating at 1000°C and then granulating so that the total content of Al2O3 and Fe2O3 is less than 5 mass % and the particle size of the raw materials are such that 90 mass % or more of the raw materials pass through a sieve having an aperture size of 150 µm, firing the granulated raw materials in a rotary kiln, in which the inner surface of the firing region uses bricks or mortar comprising one or more types of material selected from among magnesia-spinel bricks, alumina-based bricks having an Al2O3 content of 85 mass % or higher, silicon carbide-based bricks, magnesia-spinel mortar and alumina-based mortar having an Al2O3 content of 85 mass % or higher, at a temperature of 1350 to 1600°C and then dusting so that the particle size is such that 85 mass % or more of the fired product passes through a sieve having an aperture size of 40 µm.
γ−２ＣａＯ・ＳｉＯ２の製造方法
Provided is a method for producing ?-2CaO·SiO2, by which it is possible to obtain a product having high purity and stable product quality with high industrial productivity. The present invention is characterized by using CaO and SiO2 as primary components at a CaO/SiO2 molar ratio of 1.8 to 2.2, heating at 1000°C and then granulating so that the total content of Al2O3 and Fe2O3 is less than 5 mass % and the particle size of the raw materials are such that 90 mass % or more of the raw materials pass through a sieve having an aperture size of 150 µm, firing the granulated raw materials in a rotary kiln, in which the inner surface of the firing region uses bricks or mortar comprising one or more types of material selected from among magnesia-spinel bricks, alumina-based bricks having an Al2O3 content of 85 mass % or higher, silicon carbide-based bricks, magnesia-spinel mortar and alumina-based mortar having an Al2O3 content of 85 mass % or higher, at a temperature of 1350 to 1600°C and then dusting so that the particle size is such that 85 mass % or more of the fired product passes through a sieve having an aperture size of 40 µm.
METHOD FOR PRODUCING CALCINED PRODUCT CONTAINING γ-2CAO∙SIO2
| Europäisches Patentamt | 2023
METHOD FOR PRODUCING CALCINED PRODUCT COMPRISING .GAMMA.-2CAO SIO2
| Europäisches Patentamt | 2023
METHOD FOR PRODUCING CALCINED PRODUCT CONTAINING ?-2CAO?SIO2
| Europäisches Patentamt | 2025
Properties of high-alumina cement containing 2CaO-Al2O3-SiO2
| Tema Archiv | 1999