A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Magnesium aluminate spinel-calcium dialuminate light thermal insulation material based on phosphate tailings and preparation method of magnesium aluminate spinel-calcium dialuminate light thermal insulation material
The invention relates to a magnesium aluminate spinel-calcium dialuminate lightweight thermal insulation material based on phosphate tailings and a preparation method thereof. According to the technical scheme, 70-90 wt% of phosphate tailings and 10-30 wt% of aluminum oxide powder serve as raw materials and are mixed to be uniform, 0-30 wt% of a pore forming agent and 4-32 wt% of water are added, stirring, ageing, forming, natural drying and drying are conducted, and a blank is obtained; the blank is heated to 360-400 DEG C from the room temperature at the rate of 4-6 DEG C/min, then heated to 670-750 DEG C at the rate of 2-4 DEG C/min, then heated to 1000-1400 DEG C at the rate of 10-12 DEG C/min, subjected to heat preservation for 2-8 h and cooled along with a furnace, and the magnesium aluminate spinel-calcium dialuminate light heat insulation material based on the phosphate tailings is prepared. The magnesium aluminate spinel-calcium dialuminate lightweight thermal insulation material has the characteristics of high phosphate tailing reutilization rate, high additional value, low production cost and simple process, and the prepared magnesium aluminate spinel-calcium dialuminate lightweight thermal insulation material based on phosphate tailings has the advantages of high compression strength, high porosity, low volume density, low heat conductivity coefficient and strong alkali erosion resistance.
一种基于磷尾矿的镁铝尖晶石‑二铝酸钙轻质隔热材料及其制备方法。其技术方案是：以70～90wt％的磷尾矿和10～30wt％的氧化铝粉为原料，混匀，外加0～30wt％的造孔剂和4～32wt％的水，搅拌，困料，成型，自然干燥，烘干，即得坯料。将坯料以4～6℃/min的速率从室温升温至360～400℃，再以2～4℃/min的速率升温至670～750℃，然后以10～12℃/min的速率升温至1000～1400℃，保温2～8h，随炉冷却，制得基于磷尾矿的镁铝尖晶石‑二铝酸钙轻质隔热材料。本发明具有磷尾矿再利用率高、附加值高、生产成本低和工艺简单的特点，制备的基于磷尾矿的镁铝尖晶石‑二铝酸钙轻质隔热材料耐压强度高、气孔率高、体积密度低、导热系数低和抗碱侵蚀能力强。
Magnesium aluminate spinel-calcium dialuminate light thermal insulation material based on phosphate tailings and preparation method of magnesium aluminate spinel-calcium dialuminate light thermal insulation material
The invention relates to a magnesium aluminate spinel-calcium dialuminate lightweight thermal insulation material based on phosphate tailings and a preparation method thereof. According to the technical scheme, 70-90 wt% of phosphate tailings and 10-30 wt% of aluminum oxide powder serve as raw materials and are mixed to be uniform, 0-30 wt% of a pore forming agent and 4-32 wt% of water are added, stirring, ageing, forming, natural drying and drying are conducted, and a blank is obtained; the blank is heated to 360-400 DEG C from the room temperature at the rate of 4-6 DEG C/min, then heated to 670-750 DEG C at the rate of 2-4 DEG C/min, then heated to 1000-1400 DEG C at the rate of 10-12 DEG C/min, subjected to heat preservation for 2-8 h and cooled along with a furnace, and the magnesium aluminate spinel-calcium dialuminate light heat insulation material based on the phosphate tailings is prepared. The magnesium aluminate spinel-calcium dialuminate lightweight thermal insulation material has the characteristics of high phosphate tailing reutilization rate, high additional value, low production cost and simple process, and the prepared magnesium aluminate spinel-calcium dialuminate lightweight thermal insulation material based on phosphate tailings has the advantages of high compression strength, high porosity, low volume density, low heat conductivity coefficient and strong alkali erosion resistance.
一种基于磷尾矿的镁铝尖晶石‑二铝酸钙轻质隔热材料及其制备方法。其技术方案是：以70～90wt％的磷尾矿和10～30wt％的氧化铝粉为原料，混匀，外加0～30wt％的造孔剂和4～32wt％的水，搅拌，困料，成型，自然干燥，烘干，即得坯料。将坯料以4～6℃/min的速率从室温升温至360～400℃，再以2～4℃/min的速率升温至670～750℃，然后以10～12℃/min的速率升温至1000～1400℃，保温2～8h，随炉冷却，制得基于磷尾矿的镁铝尖晶石‑二铝酸钙轻质隔热材料。本发明具有磷尾矿再利用率高、附加值高、生产成本低和工艺简单的特点，制备的基于磷尾矿的镁铝尖晶石‑二铝酸钙轻质隔热材料耐压强度高、气孔率高、体积密度低、导热系数低和抗碱侵蚀能力强。
Magnesium aluminate spinel-calcium dialuminate light thermal insulation material based on phosphate tailings and preparation method of magnesium aluminate spinel-calcium dialuminate light thermal insulation material
基于磷尾矿的镁铝尖晶石-二铝酸钙轻质隔热材料及其制备方法
YE YICHENG (author) / HUANG YANG (author) / HU NANYAN (author) / YAO NAN (author) / LUO BINYU (author) / KE LIHUA (author) / ZHANG GUANGQUAN (author) / WANG QIHU (author)
2022-04-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method of calcium hexaluminate refractory material containing magnesium aluminate spinel
| European Patent Office | 2020
| European Patent Office | 2024
| European Patent Office | 2018
Electric smelting calcium dialuminate cement and preparation method thereof
| European Patent Office | 2024
Calcium hexaluminate-magnesium aluminate spinel multiphase refractory material for glass kiln
| European Patent Office | 2021