Study on the Relationship Between Sulfide Capacity and Viscosity of Aluminosilicate Slag from an Ionic Structural Point of View
Metallurgical and materials transactions B, Process metallurgy and materials processing science(2021)
摘要
The present study was carried out to understand the correlation between viscosity and sulfide capacity of aluminosilicate slag from the viewpoint of ionic structure of the slag. Viscosity and sulfide capacity are significantly influenced by the behavior of ions in the slag. Viscosity of slag is determined by the interaction between ions and size of viscous flow unit. The sulfide capacity increases with increase in NBO/T with respect to the basicity and with increase in interactions between cations and sulfide anions. The relationship between viscosity and sulfide capacity is inversely proportional when CaO/SiO 2 ratio is up to 1.3. Viscosity and sulfide capacity show a correlation in the compositional range such that viscosity is dominantly influenced by NBO/T than ionic interaction because the relationship was mediated by NBO/T. In the slag system with and without FeO, the relationship between the two properties shows different intercept values. This result indicates that the relationship is affected by the type of cation that comprises a slag system. In this respect, the effect of ionic structure on sulfide capacity, viscosity, and their relationship is discussed in detail.
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