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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/143

Title: Effect of Oxide Fluxes on the Viscosity of Molten Aluminothermic Ferro-chrome Slags
Authors: Behera, R C
Mohanty, U K
Keywords: aluminothermic
viscosity
activation-energy
ionic structure
ionic interactions
discrete aluminate anions
polymerisation
depolymerisation
Arrhenius equation
Issue Date: 2001
Publisher: The Iron and Steel Society of Japan
Citation: ISIJ International, Vol 41, No 8, P 827-833
Abstract: The viscous slag generated during aluminothermic reduction of metallic oxides for production of metals or alloys slows down the reduction process and obstructs clear separation of slag and metal. The fluxing constituents are added to bring down the viscosity. Hence the effect of variation of CaO and MgO contents on the viscosity of synthetically prepared ferrochrome slags having an approximate composition of industrial ferro-chrome slags resulting from aluminothermic reduction of chromium oxide has been studied at various temperatures. Increase of CaO and MgO contents is found to decrease the viscosity of the slags. The relative decrease in viscosity becomes very less beyond 40 mol% of CaO. It is further observed that both CaO and MgO additions do not decrease the viscosity appreciably at higher temperatures as they do at lower temperatures. The activation energy of viscous flow calculated from the viscosity data, is seen to obey the Arrhenius equation {m=A0exp(Em/RT). The activation...
Description: Copyright for this article belongs to the Iron and Steel Society of Japan
URI: http://hdl.handle.net/2080/143
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