连铸保护渣化学成分对高铝高锰钢熔化特性的影响

Effect of Chemical Composition of Continuous Casting Mold Slag on the High-Al High-Mn Steel Melting Characteristic

通过分析各化学组分对连铸保护渣冶金特性的影响以及Factsage热力学计算,设计了"非反应性"Ca O-Al_2O_3基保护渣,研究了其化学成分对熔化特性的影响。结果表明,不同组分对Ca O-Al_2O_3基连铸保护渣熔化温度的影响均不同,随其含量的增加,熔化温度均降低,影响的主次顺序为Li_2O>Na_2O>B_2O_3>BaO>CaF_2>Mg O;随着石墨或炭黑含量的增加,保护渣熔化速度逐渐减慢,熔化区间越来越大,石墨的控温能力强于炭黑;复合配碳保护渣对熔化速度的控制效果优于单一配碳的效果。

By analyzing the chemical composition of the effect of continuous casting metallurgical properties of slag and Factsage thermodynamics calculation, a ＇non-reactive＇ CaO-Al2O3-based continuous casting mold slag was designed, and the effect of chemical Composition on the melting characteristics was investigated. The results show that different components have different effects on the melting temperature of CaO-Al2O3 base Continuous casting slag. As its content increases, the melting temperature decreases. The main order of the influence is Li2O, Na2O B2O3, BaO, CaF2 and MgO2 As the content of graphite or carbon increases, the melting rate of the mold slag gradually slows down, and the melting range becomes larger and larger. However, the temperature control ability of graphite is better than that of carbon black. The effect of compound carbon-bonded mold slag on melting rate is better than that of single carbon-added slag.