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Conference Proceedings

Australia/Japan Extractive Metallurgy Symposium, Sydney

Conference Proceedings

Australia/Japan Extractive Metallurgy Symposium, Sydney

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Refining of Hot Metal with Na2CO3

Na2CO3 is a powerful flux for both dephosphorization and desulphurization in oxidizing atmospheres. In order to study refining with Na2CO3 and the nature of the Na2CO3 slag itself, hot metal (4Kg) was melted in Al203 crucibles in a high frequency induction furnace and oxidised with oxygen under Na2CO3 slag. The behaviour of Na2CO3 at high temperature was observed by thermobalance. It was found that dephosphorization ceases in a few minutes and [,P] after refining is easily lowered to less than 0.010%. [%P] after refining is affected by [Si], [P] of hot metal, the refining temperature and the consumption of Na2CO3. Desulphurization also ceases in a few minutes but it shows curious behaviour, increase of [S], decrease of (S) and increase in sulphur lost, during the latter half of run._x000D_
[%S] after refining is also affected by [P] of hot metal, the refining temperature and the consumption of Na2C03o
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  • Published: 1980
  • PDF Size: 0.719 Mb.
  • Unique ID: P198002027

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