溶鉄中炭素によるクロム鉱石の溶融還元速度と還元時のスラグの泡立ち

• 横山 誠二

  豊橋技術科学大学 工博

• 武田 光正

  豊橋技術科学大学大学院(現:豊田自動織機製作所)

• 伊藤 公允

  豊橋技術科学大学 工博

• 川上 正博

  豊橋技術科学大学 工博

書誌事項

タイトル別名

• Rate of Smelting Reduction of Chromite Ore by the Dissolved Carbon in Molten Iron and Slag Foaming during the Reduction
• ヨウテツチュウ タンソ ニ ヨル クロム コウセキ ノ ヨウユウ カンゲン ソ

抄録

The rate of smelting reduction of chromite ore in (CaO)-(SiO₂)-(Al₂O₃)-(MgO) slag by the dissolved carbon in liquid iron held in graphite crucible has been studied in order to investigate the reduction mechanism at the interface between metal and slag. The behavior of slag foaming during the reduction of the ore was also examined.<BR>The rate constant at the interface between metal and slag was in proportion to -0.82 power of slag viscosity and the apparent activation energies were 167 and 249 kJ/mol. Therefore it was estimated from these that the rate at this interface was controlled by mass transport of (CrO) in slag. The slag foaming height was kept constant during the time when the rate was expressed by the zeroth-order rate equation. The foam life decreased with an increase in both (MgO) content and (CaO)/(SiO₂) ratio, whereas a relation between the foam life and the content of (Al₂O₃) was obscure. The foam life obtained was strongly affected by slag viscosity.

収録刊行物

• 鉄と鋼

  鉄と鋼 78 (2), 223-230, 1992

  一般社団法人 日本鉄鋼協会

キーワード

• smelting reduction
• chromite ore
• reduction rate
• mass transport
• slag foaming
• foam life
• viscosity

詳細情報

• CRID: 1390282680129288448
• NII論文ID: 110001493153
• NII書誌ID: AN00151251
• DOI: 10.2355/tetsutohagane1955.78.2_223
• ISSN: 18832954
• ISSN: 00211575
• NDL書誌ID: 3759674
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3759674
• Web Site: https://www.jstage.jst.go.jp/article/tetsutohagane1955/78/2/78_2_223/_pdf
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可