By Ramana G. Reddy, Pinakin Chaubal, P. Chris Pistorius, Uday Pal
This assortment makes a speciality of ferrous and non-ferrous metallurgy the place ionic melts, slags, fluxes, or salts play very important roles in business progress and financial system around the globe. Technical subject matters incorporated are: thermodynamic homes and part diagrams and kinetics of slags, fluxes, and salts; actual houses of slags, fluxes, and salts; structural reviews of slags; interfacial and strategy phenomena regarding foaming, bubble formation, and drainage; slag recycling, refractory erosion/corrosion, and freeze linings; and recycling and usage of metallurgical slags and types and their purposes in approach development and optimization. those issues are of curiosity not to simply conventional ferrous and non-ferrous steel business methods but in addition new and upcoming technologies.
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Additional resources for Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016
By adding a considerable amount of FeO, the dicalcium silicate-saturated compositions are restrictively derived for CaO-SiO2-8mass% MgO-FeO system at 1873 K, and expressed in Fig. 8. 1 poises with increasing basicity and FeO content. This shows that the slag basicity has a more significant effect on increasing slag viscosity since FeO plays a role in decreasing the slag viscosity. In addition, as the slag basicity increases, the slag composition might change to the liquid-solid coexisting region where solid phase has an effect on the increase in slag viscosity.
From the review, the following conclusions were obtained: (1) The viscosity of blast furnace slag decreases with increasing slag basicity. MgO and FeO behave as basic oxide, resulting in the decrease in the viscosity of the melt, while the addition of Al2O3 increases the viscosity of the melt. (2) The antithetic trend was observed for the effect of Na2O/K2O addition on the viscosity of the blast furnace slags. The difference in the behavior of two alkaline oxide are 25 originated from the difference in ionic radii and coordination number of each cation.
A high rate of reduction is accompanied by a high rate of gas generation. However, higher FeO content not only increases the rate of CO generation, but also lowers the viscosity of the slag, allowing the liquid slag of the foam bubbles to drain rapidly resulting in a less stable slag. Slag #1 and coke #1 Slag # 2 and coke #1 Figure 8 Variation in total gas generation due to reduction of slags with 100% coke at 1550 °C The cross-sections of reduced slags were subjected to the optical microscopy in order to investigate size/number of distribution of gas bubbles entrapped within the slag droplet.
Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016 by Ramana G. Reddy, Pinakin Chaubal, P. Chris Pistorius, Uday Pal