A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation process of composite refractory material for furnace lining
The invention discloses a preparation process of a composite refractory material for a furnace lining. The preparation process specifically comprises the following steps: mixing Al2O3 particles, Al2O3 micro powder, metal silicon powder and o-toluidine modified phenolic resin, pressing into a sample brick, naturally drying the sample brick, drying in a high-temperature environment, putting into a nitriding furnace, introducing nitrogen, and firing at a high temperature in a nitrogen atmosphere. The o-toluidine modified phenolic resin is added into the composite refractory material Al2O3-Si3N4 for the furnace lining, so that the bonding strength is improved; secondly, the composite material Al2O3-Si3N4 is sintered in a nitrogen atmosphere, so that the production process is greatly simplified; the preparation process of the composite refractory material for the furnace lining is simple, the normal-temperature compressive strength, the normal-temperature breaking strength and the high-temperature breaking strength of the prepared composite refractory material are all improved, the service life of a furnace lining body can be prolonged to the maximum extent, and the composite refractory material has good industrial application prospects.
本发明公开了一种炉衬用复合耐火材料的制备工艺，具体为把Al2O3颗粒、Al2O3微粉、金属硅粉和邻甲苯胺改性的酚醛树脂混炼，再压制成样砖，将样砖自然干燥后于高温环境下烘干，置于氮化炉内，通入氮气，于氮气气氛中高温烧制而成。本发明所述炉衬用复合耐火材料Al2O3‑Si3N4添加有邻甲苯胺改性的酚醛树脂，粘结强度提高；其次，复合材料Al2O3‑Si3N4利用氮气气氛烧成，大大简化了生产工艺；本发明所述的炉衬用复合耐火材料的制备工艺简单，制得的复合耐火材料常温耐压强度、常温抗折强度和高温抗折强度均有所增大，能最大程度地延长炉衬本体的使用寿命，具有良好的工业应用前景。
Preparation process of composite refractory material for furnace lining
The invention discloses a preparation process of a composite refractory material for a furnace lining. The preparation process specifically comprises the following steps: mixing Al2O3 particles, Al2O3 micro powder, metal silicon powder and o-toluidine modified phenolic resin, pressing into a sample brick, naturally drying the sample brick, drying in a high-temperature environment, putting into a nitriding furnace, introducing nitrogen, and firing at a high temperature in a nitrogen atmosphere. The o-toluidine modified phenolic resin is added into the composite refractory material Al2O3-Si3N4 for the furnace lining, so that the bonding strength is improved; secondly, the composite material Al2O3-Si3N4 is sintered in a nitrogen atmosphere, so that the production process is greatly simplified; the preparation process of the composite refractory material for the furnace lining is simple, the normal-temperature compressive strength, the normal-temperature breaking strength and the high-temperature breaking strength of the prepared composite refractory material are all improved, the service life of a furnace lining body can be prolonged to the maximum extent, and the composite refractory material has good industrial application prospects.
本发明公开了一种炉衬用复合耐火材料的制备工艺，具体为把Al2O3颗粒、Al2O3微粉、金属硅粉和邻甲苯胺改性的酚醛树脂混炼，再压制成样砖，将样砖自然干燥后于高温环境下烘干，置于氮化炉内，通入氮气，于氮气气氛中高温烧制而成。本发明所述炉衬用复合耐火材料Al2O3‑Si3N4添加有邻甲苯胺改性的酚醛树脂，粘结强度提高；其次，复合材料Al2O3‑Si3N4利用氮气气氛烧成，大大简化了生产工艺；本发明所述的炉衬用复合耐火材料的制备工艺简单，制得的复合耐火材料常温耐压强度、常温抗折强度和高温抗折强度均有所增大，能最大程度地延长炉衬本体的使用寿命，具有良好的工业应用前景。
Preparation process of composite refractory material for furnace lining
一种炉衬用复合耐火材料的制备工艺
LIU PENGCHENG (author) / XU GUANGPING (author) / LI XIANGCHENG (author) / HE JIANGRONG (author) / CHEN PING'AN (author) / MAO ZHONGJUN (author) / CHEN FU (author) / SONG YIHUA (author)
2022-11-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
| European Patent Office | 2022
Composite material furnace lining, preparation method thereof and converter
| European Patent Office | 2023