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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Effect of MgO and BaO on viscosity and structure of blast furnace slag
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Effect of MgO and BaO on viscosity and structure of blast furnace slag

机译：MgO和BaO对高炉炉渣粘度和结构的影响

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摘要

The viscosity was measured by the cylinder method to investigate the effect of MgO and BaO on the viscous behavior of CaO-SiO2-Al2O3-MgO-BaO slags (CaO/SiO2 = 1.05, 7-10 wt%MgO, 0-3.5 wt%BaO). Based on the experimental data, the free running temperature and the activation energy were calculated to analyze the changes of characteristic of viscosity flow. The Fourier transformation infrared (FTIR) and Raman spectra were used to provide the information about the variation of slag structure. The results indicate that the viscosity, free running temperature, as well as activation energy decrease with the increase of MgO content in range of 7 wt%-10 wt%, and increase at BaO content from 0 wt% to 3.5 wt%. MgO provides free oxygen (O2-) to reduce the polymerization degree of slag and decreases the viscosity. However, the addition of BaO tends to form complicated structure and increase the viscosity. When BaO is added into slag, Ba2+ and O2- simultaneously influence the slag structure. O2- can break the Si-O bonds, and thus decrease the polymerization degree of slag. On the other hand, the charge compensation of Ba2+ can form complex aluminate-silicate structure and increase the viscosity of the slag. And the strong charge compensation effect that BaO acted is more dominated in the changes of slag structure.
机译：通过气缸方法测量粘度，以研究MgO和BaO对CaO-SiO2-Al2O3-MgO-BaO-BaO-BaO渣的粘性行为的影响（CaO / SiO2 = 1.05,7-10wt％MgO，0-3.5wt％宝）。基于实验数据，计算自由运行温度和激活能量以分析粘度流动特性的变化。傅里叶变换红外（FTIR）和拉曼光谱用于提供有关炉渣结构变化的信息。结果表明，在7wt％-10wt％的范围内的MgO含量的增加，粘度，自由温度以及活化能量降低，并在0wt％至3.5wt％的BaO含量增加。 MgO提供游离氧（O2-）以降低炉渣的聚合度并降低粘度。然而，添加BaO倾向于形成复杂的结构并增加粘度。当BaO被加入炉渣中时，Ba2 +和O2-同时影响渣结构。 O2-可以破坏Si-O键，从而降低炉渣的聚合度。另一方面，Ba2 +的电荷补偿可以形成复杂的铝酸盐 - 硅酸盐结构并增加炉渣的粘度。 Bao作用的强烈收费补偿效果在渣结构的变化中更为主导。

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