The effect of the Al₂O₃ content and basicity (the molar ratio of MgO to SiO₂) on the viscosity of a SiO₂–MgO–FeO–Al₂O₃–CaO slag was studied to fully understand the smelting process of the ferronickel alloy. Experimental results show that the slag is a mixture of liquid and solid phases at the experimental temperature. The viscosity decreased as the basicity increased and increased as the Al₂O₃ content increased. To determine the effect of the Al₂O₃ content and basicity on the structure of the molten slag, Raman spectroscopy was performed on the slag sample, which was quenched from the high temperature with water. The Raman spectra showed that the fractions of the polymerization structural units decreased significantly as the basicity of the slag increased, resulting in a decrease in the apparent viscosity. However, Al₂O₃ acts as a network former in the slag system, thereby making the slag structure further polymerized and increasing the viscosity.

研究了Al ₂ O _3的含量和碱度（MgO与SiO ₂的摩尔比）对SiO ₂ -MgO-FeO-Al ₂ O ₃ -CaO炉渣粘度的影响，以充分理解该熔炼过程。镍铁合金。实验结果表明，在实验温度下，炉渣是液相和固相的混合物。粘度随碱度的增加而降低，随Al ₂ O ₃含量的增加而增加。确定Al ₂ O _3的作用根据熔渣结构的含量和碱度，对熔渣样品进行拉曼光谱分析，并用水将其从高温淬火。拉曼光谱表明，随着炉渣的碱度增加，聚合结构单元的分数显着降低，导致表观粘度降低。然而，Al ₂ O ₃在炉渣系统中用作网络形成剂，从而使炉渣结构进一步聚合并增加了粘度。