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| Title: | Viscosity of Molten Al(sub)2O(sub)3–Cr(sub)2O(sub)3–CaO–CaF(sub)2 Slags at Various Al(sub)2O(sub)3/CaO Ratios |
| Authors: | Behera, R C
Mohanty, U K |
| Keywords: | Arrhenius equation
activation energy
viscous flow
intensity of interaction
depolymerisation
binary silicate
activity co-efficient
isotherm
singly bonded oxygen |
| Issue Date: | 2001 |
| Publisher: | The Iron and Steel Society of Japan |
| Citation: | ISIJ International, Vol 41, No 8, P 834-843 |
| Abstract: | Calcium fluoride, known as fluorspar is a very good flux in steel making and also has been reported to increase the alloy yield and metal recovery in aluminothermic melts for production of ferrochrome. The present investigation is therefore carried out to study the effect of CaF2 additions on the viscosity of synthetically prepared aluminothermic slags pertaining to the production of ferrochrome, with the composition approximating that of ferrochrome slag generated in the industry. The viscosities of these slags have been measured at four different Al2O3/CaO ratios with the broad composition of the slags varying between 50–62 mass% Al2O3, at various temperatures.
Calcium fluoride additions decreased the viscosity of aluminothermic ferrochrome slags at all temperatures. It is observed that the decrease in viscosity is different at different Al2O3/CaO ratios and that at all temperatures there is fast decrease in viscosity initially at lower CaF2 contents, the rate of decrease diminishin... |
| Description: | Copyright for this article belongs the Iron and Steel Society of Japan |
| URI: | http://hdl.handle.net/2080/144 |
| Appears in Collections: | Journal Articles
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