Dephosphorization of Crude Stainless Steel with BaO-based Flux

DOI Web Site Web Site 2 References

Bibliographic Information

Other Title
  • BaO-塩化物系フラックスによるステンレス粗溶鋼の脱りん
  • BaO エンカブツケイ フラックス ニ ヨル ステンレス ソヨウコウ ノ ダツ

Search this article

Description

Dephosphorization of crude stainless steel with BaO-based flux is investigated in a laboratory scale test and industrial AOD operation.<BR>By using BaO-BaCl2-Cr2O3 flux or BaCO3-BaCl2-C flux of about 100 kg/t, 60% dephosphorization is possible, if the crude stainless steel has a chromium content of 16 to 25% and a carbon content of 1 to 2%. In addition, a more than 90% desulphurization and removal of vanadium can also be achieved.<BR>To get satisfactory dephosphorization, Cr2O3 content in slag should be controlled in 3 to 6% with BaO content of 40 to 50%. Phosphate capacity of the slag ( CPO<SUB>43-</SUB>≡(PO43- ) /(PP<SUB>2</SUB>1/2·PO<SUB>2</SUB>5/4) ) is about 10227 at 1 450°C.<BR>It is considered that this dephosphorization of crude stainless steel having a carbon content of 2% and a chromium content of 18% at 1 450°C proceeds with slightly higher oxygen potential of slag than that of metal.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 75 (3), 454-461, 1989

    The Iron and Steel Institute of Japan

References(2)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top