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Conference Proceedings

Australia/Japan Extractive Metallurgy Symposium, Sydney

Conference Proceedings

Australia/Japan Extractive Metallurgy Symposium, Sydney

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The Partition of Sulphur and Silicon in the Iron Blast Furnace

Sulphur partition between metal and slag has been examined on a cast-by-cast basis for BTIP furnaces. Partition values. were calculated from thermodynamic equilibrium data together with oxygen activities computed from the manganese partition. The S-C interaction coefficient, esc , was treated as an adjust- able parameter and the agreement between calculated and measured S partition values optimized. In the case of furnaces operating with low viscosity slags this procedure led to estimates of esc in close agreement with previously measured values. The same analysis applied to daily average data for several Kawasaki Steel furnaces led to the same esti- mates of e c s , indicating a similar approach to equilibrium. Silicon partition between metal and slag has been examined on a time average basis and found to be far removed from thermodynamic equilibrium for most Australian furnaces. A study of Japanese furnaces of comparable size reveals a temperature dependence of Si parti- tion which appears to be close to equilibrium._x000D_
Australian furnaces approach this behaviour only when operating with low viscosity slags._x000D_
A preliminary examination of the effects of burdening with TiO 2 on the silicon partition is also reported.
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  • Published: 1980
  • PDF Size: 0.292 Mb.
  • Unique ID: P198002039

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