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首页> 外文期刊>ISIJ international >Activity of MgO in CaO–SiO2–MgO–Al2O3 Melts for Blast Furnace Slag at 1873 K
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Activity of MgO in CaO–SiO2–MgO–Al2O3 Melts for Blast Furnace Slag at 1873 K

机译：MgO在CaO-SiO 2 -mgo-al 2 O 3 1873 k的高炉渣中的熔体

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In this paper, slag-metal equilibrium experiments have been carried out for the determination of activity of MgO in CaO–SiO_(2)–MgO–Al_(2)O_(3) melts for blast furnace slag at T=1873 K using Sn as metal solvent and CaF_(2)–MgO slag as reference slag. Based on the obtained experimental results, the iso-activity contour for CaO–SiO_(2)–MgO–Al_(2)O_(3) system was plotted. The effects of R (w (CaO)/w (SiO_(2))) and w (MgO)/w (Al_(2)O_(3)) on the activity of MgO was also discussed. The effects of R and w (MgO)/w (Al_(2)O_(3)) on slag structure were analyzed by Fourier transform infrared spectroscopy (FT-IR). The results show that when w (Al_(2)O_(3))=20% and w (MgO)/w (Al_(2)O_(3))=0.50, the activity of MgO increased with the increase of R . When w (Al_(2)O_(3))=20% and R =1.30, the activity of MgO increased with the increase of w (MgO)/w (Al_(2)O_(3)). Through the analysis of FT-IR, the amount of free oxygen ions (O~(2?)) increases with the increase of R or w (MgO)/w (Al_(2)O_(3)) in slag, and these free oxygen ions interact with the bridge oxygen (O~(0)) of silicate, resulting in the gradual depolymerization of complex Si–O structure in slag.
机译：在本文中，已经进行了渣金属平衡实验，用于测定MgO中的MgO活性，用于在T = 1873k的高炉渣中的熔体熔融使用Sn作为金属溶剂和CAF_（2）-MGO渣作为参考渣。基于所获得的实验结果，绘制了CaO-SiO_（2）-MGO-AL_（2）O_（3）系统的ISO-活性轮廓。 R（ W（caO）/ w（sio_（2）））和 w（mgO）/ w（AL_（2）O_（3））的影响还讨论了MgO的活动。通过傅里叶变换红外光谱（FT-IR）分析了在渣结构上对渣结构的 r和 w（mgO）/ w（AL_（2）O_（3））的影响。结果表明，当 w（AL_（2）O_（3））= 20％和 W（MgO）/ w（AL_（2）O_（3））= 0.50，活动MgO随着 r的增加而增加。当 w（Al_（2）O_（3））= 20％和 r = 1.30时，MgO的活性随 W（MgO）/ W（AL_（ 2）O_（3））。通过对FT-IR的分析，游离氧离子的量（O〜（2？））随着 R或 W（MgO）/ W（AL_（2）O_）的增加而增加（3））在炉渣中，这些游离氧离子与硅酸盐的桥氧（O〜（0））相互作用，导致炉渣中的复合Si-O结构的逐渐解聚。

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