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Refractory material with Cr2AlC/Mg (Al, Cr) 2O4 directly combined with chromic oxide and preparation method thereof
The invention relates to a refractory material formed by directly combining Cr2AlC/Mg (Al, Cr) 2O4 with chromic oxide and a preparation method of the refractory material. According to the technical scheme, the preparation method comprises the following steps: taking 55-65wt% of electric smelting chromium-aluminum particles, 5-15wt% of zirconium oxide particles, 10-20wt% of chromium oxide fine powder, 8-12wt% of light calcined magnesium oxide fine powder and 2-8wt% of chromium-aluminum-carbon fine powder as raw materials, and additionally adding 3-5wt% of resin as a raw material; the preparation method comprises the following steps: firstly, stirring the electric smelting chromium-aluminum particles in a stirrer, adding 2-2.5 wt% of resin at a constant speed, and stirring; adding the light calcined magnesia fine powder, and continuously stirring; and adding zirconium oxide particles, chromium oxide fine powder, chromium-aluminum-carbon fine powder and residual resin, continuously stirring, ageing, carrying out mechanical pressing molding, drying, heating to 1600-1780 DEG C in a buried carbon atmosphere, carrying out heat preservation, and cooling to prepare the refractory material with Cr2AlC/Mg (Al, Cr) 2O4 directly combined with chromium oxide. The product disclosed by the invention is excellent in coal cinder erosion resistance, good in thermal shock resistance, excellent in high-temperature strength and long in high-temperature service life.
本发明涉及一种Cr2AlC/Mg(Al,Cr)2O4直接结合氧化铬的耐火材料及其制备方法。其技术方案是：以55～65wt％的电熔铬铝颗粒、5～15wt％的氧化锆颗粒、10～20wt％的氧化铬细粉、8～12wt％的轻烧氧化镁细粉、2～8wt％的铬铝碳细粉为原料，外加原料3～5wt％的树脂；先将电熔铬铝颗粒置入搅拌机中搅拌，同时匀速加入2～2.5wt％的树脂，搅拌；加入轻烧氧化镁细粉，继续搅拌；加入氧化锆颗粒、氧化铬细粉、铬铝碳细粉和剩余树脂，继续搅拌，困料，机压成型，干燥，在埋碳气氛中升温至1600～1780℃，保温，冷却，制得Cr2AlC/Mg(Al,Cr)2O4直接结合氧化铬的耐火材料。本发明的制品抗煤渣侵蚀性能优异、热震稳定性好、高温强度优良和高温使用寿命长。
Refractory material with Cr2AlC/Mg (Al, Cr) 2O4 directly combined with chromic oxide and preparation method thereof
The invention relates to a refractory material formed by directly combining Cr2AlC/Mg (Al, Cr) 2O4 with chromic oxide and a preparation method of the refractory material. According to the technical scheme, the preparation method comprises the following steps: taking 55-65wt% of electric smelting chromium-aluminum particles, 5-15wt% of zirconium oxide particles, 10-20wt% of chromium oxide fine powder, 8-12wt% of light calcined magnesium oxide fine powder and 2-8wt% of chromium-aluminum-carbon fine powder as raw materials, and additionally adding 3-5wt% of resin as a raw material; the preparation method comprises the following steps: firstly, stirring the electric smelting chromium-aluminum particles in a stirrer, adding 2-2.5 wt% of resin at a constant speed, and stirring; adding the light calcined magnesia fine powder, and continuously stirring; and adding zirconium oxide particles, chromium oxide fine powder, chromium-aluminum-carbon fine powder and residual resin, continuously stirring, ageing, carrying out mechanical pressing molding, drying, heating to 1600-1780 DEG C in a buried carbon atmosphere, carrying out heat preservation, and cooling to prepare the refractory material with Cr2AlC/Mg (Al, Cr) 2O4 directly combined with chromium oxide. The product disclosed by the invention is excellent in coal cinder erosion resistance, good in thermal shock resistance, excellent in high-temperature strength and long in high-temperature service life.
本发明涉及一种Cr2AlC/Mg(Al,Cr)2O4直接结合氧化铬的耐火材料及其制备方法。其技术方案是：以55～65wt％的电熔铬铝颗粒、5～15wt％的氧化锆颗粒、10～20wt％的氧化铬细粉、8～12wt％的轻烧氧化镁细粉、2～8wt％的铬铝碳细粉为原料，外加原料3～5wt％的树脂；先将电熔铬铝颗粒置入搅拌机中搅拌，同时匀速加入2～2.5wt％的树脂，搅拌；加入轻烧氧化镁细粉，继续搅拌；加入氧化锆颗粒、氧化铬细粉、铬铝碳细粉和剩余树脂，继续搅拌，困料，机压成型，干燥，在埋碳气氛中升温至1600～1780℃，保温，冷却，制得Cr2AlC/Mg(Al,Cr)2O4直接结合氧化铬的耐火材料。本发明的制品抗煤渣侵蚀性能优异、热震稳定性好、高温强度优良和高温使用寿命长。
Refractory material with Cr2AlC/Mg (Al, Cr) 2O4 directly combined with chromic oxide and preparation method thereof
Cr2AlC/Mg(Al,Cr)2O4直接结合氧化铬的耐火材料及其制备方法
CHEN JUNFENG (author) / WU ZIHAO (author) / DENG MENGJIE (author) / MIAO ZHENG (author) / LIU GUANGPING (author) / LI YUANYUAN (author) / YAN WEN (author) / LI NAN (author)
2024-05-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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