Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Coal slime solid waste-based high-strength and high-porosity ceramsite and preparation method thereof
The invention belongs to the technical field of solid waste resource utilization, and discloses a coal slime solid waste based high-strength and high-porosity ceramsite and a preparation method thereof. The preparation method comprises the following steps: 1) mixing the coal slime, the sodium carbonate and the granite stone powder, and fully grinding to obtain a fine powder material; 2) adding water into the fine powder material, and uniformly mixing to obtain a mud pie; (3) extruding the mud pies into strips, and then cutting the strips into wet particles; 4) performing two-stage drying on the wet particles to obtain raw material particles; and 5) carrying out primary calcination on the raw material particles in a nitrogen atmosphere, then carrying out secondary calcination in an air atmosphere, and cooling to obtain the ceramsite. According to the invention, coal slime is used as a main raw material, a small amount of sodium carbonate and granite stone powder are added as auxiliary raw materials, after mixing, grinding, granulation and drying, calcination consolidation is carried out in a nitrogen atmosphere and preliminary pore forming is carried out, and then calcination is carried out in an air atmosphere for secondary pore forming, so that the ceramsite has high mechanical strength and high porosity at the same time.
本发明属于固体废弃物资源化利用技术领域，公开了一种煤泥固废基高强度高孔隙率陶粒及其制备方法。其制备方法为：1)将煤泥、碳酸钠和花岗岩石粉混合后充分研磨，得到细粉物料；2)向细粉物料中加水，混合均匀，得到泥团；3)将泥团挤压成条，然后切割成湿颗粒；4)对湿颗粒进行两阶段干燥，得到生料颗粒；5)将生料颗粒先在氮气氛围中进行一次煅烧，再在空气氛围中进行二次煅烧，冷却，得到陶粒。本发明以煤泥为主要原料，添加少量碳酸钠和花岗岩石粉为辅助原料，经混合、研磨、造粒、干燥后，先在氮气氛围中煅烧固结并进行初步造孔，再在空气氛围中煅烧进行二次造孔，使陶粒同时具有高机械强度和高孔隙率。
Coal slime solid waste-based high-strength and high-porosity ceramsite and preparation method thereof
The invention belongs to the technical field of solid waste resource utilization, and discloses a coal slime solid waste based high-strength and high-porosity ceramsite and a preparation method thereof. The preparation method comprises the following steps: 1) mixing the coal slime, the sodium carbonate and the granite stone powder, and fully grinding to obtain a fine powder material; 2) adding water into the fine powder material, and uniformly mixing to obtain a mud pie; (3) extruding the mud pies into strips, and then cutting the strips into wet particles; 4) performing two-stage drying on the wet particles to obtain raw material particles; and 5) carrying out primary calcination on the raw material particles in a nitrogen atmosphere, then carrying out secondary calcination in an air atmosphere, and cooling to obtain the ceramsite. According to the invention, coal slime is used as a main raw material, a small amount of sodium carbonate and granite stone powder are added as auxiliary raw materials, after mixing, grinding, granulation and drying, calcination consolidation is carried out in a nitrogen atmosphere and preliminary pore forming is carried out, and then calcination is carried out in an air atmosphere for secondary pore forming, so that the ceramsite has high mechanical strength and high porosity at the same time.
本发明属于固体废弃物资源化利用技术领域，公开了一种煤泥固废基高强度高孔隙率陶粒及其制备方法。其制备方法为：1)将煤泥、碳酸钠和花岗岩石粉混合后充分研磨，得到细粉物料；2)向细粉物料中加水，混合均匀，得到泥团；3)将泥团挤压成条，然后切割成湿颗粒；4)对湿颗粒进行两阶段干燥，得到生料颗粒；5)将生料颗粒先在氮气氛围中进行一次煅烧，再在空气氛围中进行二次煅烧，冷却，得到陶粒。本发明以煤泥为主要原料，添加少量碳酸钠和花岗岩石粉为辅助原料，经混合、研磨、造粒、干燥后，先在氮气氛围中煅烧固结并进行初步造孔，再在空气氛围中煅烧进行二次造孔，使陶粒同时具有高机械强度和高孔隙率。
Coal slime solid waste-based high-strength and high-porosity ceramsite and preparation method thereof
一种煤泥固废基高强度高孔隙率陶粒及其制备方法
GE WEI (Autor:in) / MAO HENGHENG (Autor:in) / MIN FANFEI (Autor:in) / SONG SHAOXIAN (Autor:in) / LIU LINGYUN (Autor:in) / CHEN JUN (Autor:in) / ZHU DAN (Autor:in) / ZHANG YONG (Autor:in) / XU JINTAO (Autor:in) / ZHOU ZHENHAO (Autor:in)
01.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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