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A platform for research: civil engineering, architecture and urbanism
Casting high-chromium refractory brick
The invention discloses a casting high-chromium refractory brick which comprises 80-95% of electric smelting chromic oxide sand, 0-10% of chrome corundum sand, 1-12% of aluminum oxide, 1-12% of zirconium oxide and 0-3% of clay, and a production method of the casting high-chromium refractory brick comprises the steps of material preparation, sand mold manufacturing, heat preservation box preheating, electric furnace melting, casting forming, cooling annealing and cold machining. The cast high-chromium brick is composed of anti-erosion chromic oxide, an aluminum-chromium solid solution CrxAl2-xO3 and baddeleyite, all phases are good in crystallization, uniform in distribution and tight in combination, and the cast high-chromium brick is high in product density, low in porosity and excellent in erosion resistance and permeability resistance; the method can be applied to seriously eroded parts of kilns such as coal gasifiers, CFB boilers, glass fiber kilns, float glass kilns, high-level liquid waste glass curing ceramic furnaces and the like, and the service life of the furnaces is effectively prolonged.
本发明公开了一种熔铸高铬耐火砖，该耐火砖配方为电熔氧化铬砂80～95%、铬刚玉砂0~10%、氧化铝1～12%、氧化锆1～12%、粘土0~3%，其生产方法包括配料、砂型制作、保温箱预热、电炉熔融、浇铸成型、冷却退火和冷加工工序。本发明的熔铸高铬砖由抗侵蚀的氧化铬、铝铬固溶体CrxAl2﹣xO3、斜锆石组成，各物相结晶良好、分布均匀、结合紧密，产品致密度高，气孔率低，抗侵蚀性及抗渗透性优异，可应用于煤气化炉、CFB锅炉、玻纤窑、浮法玻璃窑、高放废液玻璃固化陶瓷炉等窑炉侵蚀严重部位，有效提高熔炉使用寿命。
Casting high-chromium refractory brick
The invention discloses a casting high-chromium refractory brick which comprises 80-95% of electric smelting chromic oxide sand, 0-10% of chrome corundum sand, 1-12% of aluminum oxide, 1-12% of zirconium oxide and 0-3% of clay, and a production method of the casting high-chromium refractory brick comprises the steps of material preparation, sand mold manufacturing, heat preservation box preheating, electric furnace melting, casting forming, cooling annealing and cold machining. The cast high-chromium brick is composed of anti-erosion chromic oxide, an aluminum-chromium solid solution CrxAl2-xO3 and baddeleyite, all phases are good in crystallization, uniform in distribution and tight in combination, and the cast high-chromium brick is high in product density, low in porosity and excellent in erosion resistance and permeability resistance; the method can be applied to seriously eroded parts of kilns such as coal gasifiers, CFB boilers, glass fiber kilns, float glass kilns, high-level liquid waste glass curing ceramic furnaces and the like, and the service life of the furnaces is effectively prolonged.
本发明公开了一种熔铸高铬耐火砖，该耐火砖配方为电熔氧化铬砂80～95%、铬刚玉砂0~10%、氧化铝1～12%、氧化锆1～12%、粘土0~3%，其生产方法包括配料、砂型制作、保温箱预热、电炉熔融、浇铸成型、冷却退火和冷加工工序。本发明的熔铸高铬砖由抗侵蚀的氧化铬、铝铬固溶体CrxAl2﹣xO3、斜锆石组成，各物相结晶良好、分布均匀、结合紧密，产品致密度高，气孔率低，抗侵蚀性及抗渗透性优异，可应用于煤气化炉、CFB锅炉、玻纤窑、浮法玻璃窑、高放废液玻璃固化陶瓷炉等窑炉侵蚀严重部位，有效提高熔炉使用寿命。
Casting high-chromium refractory brick
一种熔铸高铬耐火砖
WANG JUNTAO (author) / MAO LIMIN (author) / YIN CHAONAN (author) / HU JIANHUI (author) / WEI HAN (author) / YANG HAIYUN (author) / LIU JIWANG (author) / XU RULIN (author) / YAN XIN (author) / XU LINLIN (author)
2022-09-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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