熔融還原煉鐵用Al2O3-SiC-C及Al2O3-TiO2-C耐火材料之熔蝕研究

Slag Corrosion Resistance of Al2O3-SiC-C and Al2O3-TiO2-C Refractory Bricks for Direct Iron Ore Smelting Reduction Process

許家展(C. C. Hsu) ； 游善溥(S. P. Yu) ； 洪敏雄(M. H. Hon) ； 王木琴(M. C. Wang) ； 李育成(Y. C. Li) ； 邵靖衡(C. H. Shao)

《材料科學與工程》 35卷1期 (2003/03) Pp. 5-10

https://doi.org/10.6409/JMSE.200303.0005

摘要

選用三種不同廠牌之Al2O3-Sic-C(ASC)磚及一種Al2O3-TiO2-C(ATC)磚，進行熔蝕研究。結果發現在1650℃時之熔蝕較1550℃嚴重，而在鹽基度0.8之熔蝕亦較1.3者嚴重。ASC磚中之A磚在1550℃時幾乎未被熔蝕，但在1650℃，鹽基度0.8及FeO 10 wt %時之熔蝕則相當嚴重。B磚在不同溫度及鹽基度下之熔蝕率具有相當大之差異。C(ASC)磚在為1650℃下之熔蝕率隨渣中FeO含量之增加而降低，但在1550℃時。其耐蝕情形則相當良好。ATC磚（D磚）在鹽基度0.8之熔蝕率隨渣中FeO含量之增高而降低，但在鹽基度1.3時其耐熔蝕則相當良好。

關鍵字

熔融還原練鐵 ； Al2O3-SiC-C(ASC)磚 ； Al2O3-TiO2-C(ATC)磚 ； 熔蝕 ； 鹽基度

並列摘要

Corrosion resistance of Al2O3-TiO2-C (ASC) and Al2O3-TiO2-C (ATC) refractory bricks with molten MgO-Al2O3-SiO2-CaO-FeO slag using electric furnace static corrosion test have been investigated. The A(ASC) brick at 1550℃ was nearly not corroded but the corrosion was very serious when at conditions of 1650℃, basicity 0.8 and FeO l0wt %. The corrosion of B (ASC) bricks at various temperatures and basicity was significantly different. The C(ASC) brick at 1550℃ has a lower corrosion rate. As heated at 1650℃, the corrosion rate decreased with increasing FeO content. The corrosion rate of D(ATC) brick decreased with increasing FeO content when the basicity was at 0.8, but the corrosion resistance was good during the basicity 1.3 for D brick.

並列關鍵字

direct iron ore smelting reduction process ； Al2O3-SiC-C(ASC) brick ； Al2O3-TiO2-C(ATC) brick ； corrosion ； basicity