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Magnesium-calcium material taking phosphate tailings as main raw material and preparation method thereof
The invention relates to a magnesium-calcium material taking phosphate tailings as a main raw material and a preparation method of the magnesium-calcium material. According to the technical scheme, the method comprises the following steps: firstly, keeping the temperature of phosphate tailing powder at 1050-1150 DEG C for 2-4 hours, and cooling to obtain light burnt powder; mixing 90 to 98 weight percent of the light burnt powder and 2 to 10 weight percent of magnesia powder, and molding; and keeping the temperature at 1600-1700 DEG C for 2-5 hours, and cooling to obtain the magnesium-calcium material taking the phosphate tailings as the main raw material. The particle size of the phosphate tailing powder is 1-200 [mu]m; and the phosphorus tailing powder contains less than or equal to 2wt% of P2O5, more than or equal to 18wt% of MgO and more than or equal to 28wt% of CaO. The particle size of the magnesia fine powder is 1-200 [mu]m; the MgO content of the magnesia fine powder is greater than or equal to 96wt%. According to the invention, the resource utilization can be improved, the process is simple, the cost is low and the environment-friendly effect is realized, and the prepared magnesium-calcium material taking the phosphate tailings as the main raw material is good in hydration resistance, high in refractoriness, low in phosphorus content and large in volume density, and is a high-quality raw material for preparing high-temperature ceramics and refractory materials.
本发明涉及一种以磷尾矿为主要原料的镁钙材料及其制备方法。其技术方案是：先将磷尾矿粉在1050～1150℃条件下保温2～4小时，冷却，得到轻烧粉；再将90～98wt％的所述轻烧粉与2～10wt％的镁砂粉混合，成型；然后于1600～1700℃条件下保温2～5小时，冷却，制得以磷尾矿为主要原料的镁钙材料。所述磷尾矿粉的粒径为1～200μm；所述磷尾矿粉：P2O5含量≤2wt％，MgO含量≥18wt％，CaO含量≥28wt％。所述镁砂细粉的粒径为1～200μm；所述镁砂细粉的MgO含量≥96wt％。本发明能提高资源化利用、工艺简单、成本低和环境友好，所制备的以磷尾矿为主要原料的镁钙材料抗水化性能好、耐火度高、磷含量低和体积密度大，是制备高温陶瓷和耐火材料的优质原料。
Magnesium-calcium material taking phosphate tailings as main raw material and preparation method thereof
The invention relates to a magnesium-calcium material taking phosphate tailings as a main raw material and a preparation method of the magnesium-calcium material. According to the technical scheme, the method comprises the following steps: firstly, keeping the temperature of phosphate tailing powder at 1050-1150 DEG C for 2-4 hours, and cooling to obtain light burnt powder; mixing 90 to 98 weight percent of the light burnt powder and 2 to 10 weight percent of magnesia powder, and molding; and keeping the temperature at 1600-1700 DEG C for 2-5 hours, and cooling to obtain the magnesium-calcium material taking the phosphate tailings as the main raw material. The particle size of the phosphate tailing powder is 1-200 [mu]m; and the phosphorus tailing powder contains less than or equal to 2wt% of P2O5, more than or equal to 18wt% of MgO and more than or equal to 28wt% of CaO. The particle size of the magnesia fine powder is 1-200 [mu]m; the MgO content of the magnesia fine powder is greater than or equal to 96wt%. According to the invention, the resource utilization can be improved, the process is simple, the cost is low and the environment-friendly effect is realized, and the prepared magnesium-calcium material taking the phosphate tailings as the main raw material is good in hydration resistance, high in refractoriness, low in phosphorus content and large in volume density, and is a high-quality raw material for preparing high-temperature ceramics and refractory materials.
本发明涉及一种以磷尾矿为主要原料的镁钙材料及其制备方法。其技术方案是：先将磷尾矿粉在1050～1150℃条件下保温2～4小时，冷却，得到轻烧粉；再将90～98wt％的所述轻烧粉与2～10wt％的镁砂粉混合，成型；然后于1600～1700℃条件下保温2～5小时，冷却，制得以磷尾矿为主要原料的镁钙材料。所述磷尾矿粉的粒径为1～200μm；所述磷尾矿粉：P2O5含量≤2wt％，MgO含量≥18wt％，CaO含量≥28wt％。所述镁砂细粉的粒径为1～200μm；所述镁砂细粉的MgO含量≥96wt％。本发明能提高资源化利用、工艺简单、成本低和环境友好，所制备的以磷尾矿为主要原料的镁钙材料抗水化性能好、耐火度高、磷含量低和体积密度大，是制备高温陶瓷和耐火材料的优质原料。
Magnesium-calcium material taking phosphate tailings as main raw material and preparation method thereof
一种以磷尾矿为主要原料的镁钙材料及其制备方法
WEI YAOWU (author) / TUO KANG'AN (author) / DENG ZIRONG (author)
2021-07-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
| European Patent Office | 2021
| European Patent Office | 2020
Magnesium-calcium material and preparation method thereof
| European Patent Office | 2020