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HIGH-PURITY COMPACT CALCIUM HEXA-ALUMINATE-BASED REFRACTORY MATERIAL AND PREPARATION METHOD THEREFOR
The present invention belongs to the technical field of refractory materials, and disclosed are a high-purity compact calcium hexa-aluminate-based refractory material, a preparation method therefor, and a working lining using the same. The mixing ratio is adjusted according to the chemical composition of the final product to contain raw materials containing CaO, Al2O3 and ZrO2, the mixing ratio enabling the ratio of the chemical composition CaO:Al2O3:ZrO2 calculated according to parts by mass to be 45.5-95.5%:2.0-8.4%:0-50%; and the chemical composition are placed into a high-temperature furnace and a mold for hot-pressing is carried out, the maximum temperature is 1550-1800°C, and the hot-pressing strength is 0.5-30MPa. In the present invention, when no sintering agent is added, a hot-pressing sintering process is employed according to a proportion to obtain a high-purity compact calcium hexa-aluminate-based refractory material, and the refractory material has excellent resistance to molten steel erosion and thermal shock stability, and can be widely applied in metallurgy, building materials and petrochemical industries as well as other industries. The preparation method is scientific and reasonable, product purity is high, and the prepared refractory material product can increase a device operation period; in addition, production costs are reduced, and energy-saving and emission-reducing effects are achieved.
HIGH-PURITY COMPACT CALCIUM HEXA-ALUMINATE-BASED REFRACTORY MATERIAL AND PREPARATION METHOD THEREFOR
The present invention belongs to the technical field of refractory materials, and disclosed are a high-purity compact calcium hexa-aluminate-based refractory material, a preparation method therefor, and a working lining using the same. The mixing ratio is adjusted according to the chemical composition of the final product to contain raw materials containing CaO, Al2O3 and ZrO2, the mixing ratio enabling the ratio of the chemical composition CaO:Al2O3:ZrO2 calculated according to parts by mass to be 45.5-95.5%:2.0-8.4%:0-50%; and the chemical composition are placed into a high-temperature furnace and a mold for hot-pressing is carried out, the maximum temperature is 1550-1800°C, and the hot-pressing strength is 0.5-30MPa. In the present invention, when no sintering agent is added, a hot-pressing sintering process is employed according to a proportion to obtain a high-purity compact calcium hexa-aluminate-based refractory material, and the refractory material has excellent resistance to molten steel erosion and thermal shock stability, and can be widely applied in metallurgy, building materials and petrochemical industries as well as other industries. The preparation method is scientific and reasonable, product purity is high, and the prepared refractory material product can increase a device operation period; in addition, production costs are reduced, and energy-saving and emission-reducing effects are achieved.
HIGH-PURITY COMPACT CALCIUM HEXA-ALUMINATE-BASED REFRACTORY MATERIAL AND PREPARATION METHOD THEREFOR
HOCHREINES KOMPAKTES FEUERFESTES MATERIAL AUF CALCIUMHEXAALUMINATBASIS UND HERSTELLUNGSVERFAHREN DAFÜR
MATÉRIAU RÉFRACTAIRE COMPACT DE HAUTE PURETÉ À BASE D'HEXA-ALUMINATE DE CALCIUM ET PROCÉDÉ DE PRÉPARATION ASSOCIÉ
CHEN JUNHONG (author) / FENG JISHENG (author) / JIA YUANPING (author) / LI BIN (author) / ZHU BO (author) / LI GUANGQI (author) / GUO YUTAO (author)
2024-11-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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