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Phosphate tailing-based magnesium-calcium particle and preparation method thereof
The invention relates to a phosphate tailing-based magnesium-calcium particle and a preparation method thereof. According to the technical scheme, the method comprises the following steps: firstly, putting a phosphate tailing powder into a charging basket of granulation equipment, starting the granulation equipment, then adding water which is 12-32wt% of the phosphate tailing powder into the charging basket, and performing granulation; after the phosphate tailing powder in the charging basket is completely converted into particles, stopping the granulation, taking out particles, and performing standing and drying; and then in a heating furnace, preserving heat at 1500-1700 DEG C for 1-5 hours, and performing cooling to obtain the phosphate tailing-based magnesium-calcium particle. The particle size of the phosphate tailing powder is 1-200 [mu]m; and in the phosphate tailing powder, the content of P2O5 is not more than 2wt%, the content of MgO is not less than 15wt%, and the content of CaO is not less than 25wt%. The method is simple in process, low in cost, environmentally friendly and high in phosphorus tailing recycling degree, and the prepared product is good in hydration resistance, low in phosphorus content, high in porosity, moderate in volume density and high in alkaline slag erosion resistance, has heat insulation performance and fire resistance at the same time, facilitates energy conservation and consumption reduction and meets the requirement for light weight of materials.
本发明涉及一种基于磷尾矿的镁钙颗粒及其制备方法。其技术方案是：先将磷尾矿粉置于造粒设备的料桶中，启动造粒设备，再向料桶中加入所述磷尾矿粉12～32wt％的水，造粒；待料桶中的磷尾矿粉全部转化为颗粒后停止造粒，取出颗粒，静置，干燥；然后于加热炉中，在1500～1700℃条件下保温1～5小时，冷却，制得基于磷尾矿的镁钙颗粒。所述磷尾矿粉的粒径为1～200μm；所述磷尾矿粉中：P2O5含量≤2wt％，MgO含量≥15wt％，CaO含量≥25wt％。本发明工艺简单、成本低、环境友好和磷尾矿资源化程度高，所制制品抗水化性能好、磷含量低、孔隙率较高、体积密度适中和抗碱性渣侵蚀能力强，同时兼具隔热性能和耐火性能，有利于节能降耗和满足材料轻量化要求。
Phosphate tailing-based magnesium-calcium particle and preparation method thereof
The invention relates to a phosphate tailing-based magnesium-calcium particle and a preparation method thereof. According to the technical scheme, the method comprises the following steps: firstly, putting a phosphate tailing powder into a charging basket of granulation equipment, starting the granulation equipment, then adding water which is 12-32wt% of the phosphate tailing powder into the charging basket, and performing granulation; after the phosphate tailing powder in the charging basket is completely converted into particles, stopping the granulation, taking out particles, and performing standing and drying; and then in a heating furnace, preserving heat at 1500-1700 DEG C for 1-5 hours, and performing cooling to obtain the phosphate tailing-based magnesium-calcium particle. The particle size of the phosphate tailing powder is 1-200 [mu]m; and in the phosphate tailing powder, the content of P2O5 is not more than 2wt%, the content of MgO is not less than 15wt%, and the content of CaO is not less than 25wt%. The method is simple in process, low in cost, environmentally friendly and high in phosphorus tailing recycling degree, and the prepared product is good in hydration resistance, low in phosphorus content, high in porosity, moderate in volume density and high in alkaline slag erosion resistance, has heat insulation performance and fire resistance at the same time, facilitates energy conservation and consumption reduction and meets the requirement for light weight of materials.
本发明涉及一种基于磷尾矿的镁钙颗粒及其制备方法。其技术方案是：先将磷尾矿粉置于造粒设备的料桶中，启动造粒设备，再向料桶中加入所述磷尾矿粉12～32wt％的水，造粒；待料桶中的磷尾矿粉全部转化为颗粒后停止造粒，取出颗粒，静置，干燥；然后于加热炉中，在1500～1700℃条件下保温1～5小时，冷却，制得基于磷尾矿的镁钙颗粒。所述磷尾矿粉的粒径为1～200μm；所述磷尾矿粉中：P2O5含量≤2wt％，MgO含量≥15wt％，CaO含量≥25wt％。本发明工艺简单、成本低、环境友好和磷尾矿资源化程度高，所制制品抗水化性能好、磷含量低、孔隙率较高、体积密度适中和抗碱性渣侵蚀能力强，同时兼具隔热性能和耐火性能，有利于节能降耗和满足材料轻量化要求。
Phosphate tailing-based magnesium-calcium particle and preparation method thereof
一种基于磷尾矿的镁钙颗粒及其制备方法
WEI YAOWU (Autor:in) / DENG ZIRONG (Autor:in) / TUO KANG'AN (Autor:in)
08.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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