成果報告書詳細
管理番号20090000000272
タイトル*平成20年度中間年報 エネルギー使用合理化技術戦略的開発/エネルギー有効利用基盤技術先導研究開発/難利用鉄系スクラップの利用拡大のための先導的研究
公開日2009/9/17
報告書年度2008 - 2008
委託先名JFEスチール株式会社 住友金属工業株式会社
プロジェクト番号P03033
部署名省エネルギー技術開発部 研究開発グループ
和文要約以下本編抜粋:1.研究開発の内容および成果等 (1)市中鉄スクラップからのトランプエレメント除去プロセスの基礎研究(JFEスチール(株)) 1)トランプエレメント除去の実用性の実験室的検証 既有の10kg規模溶解炉を用い、Na-FeS系フラックスによる溶銑からの脱Cu実験を実施。脱Cu挙動に及ぼす溶銑温度およびフラックス組成、量などの基本的影響を明らかにした。溶銑中のCuの33%以上を除去可能であることを確認した。また、各種精練操作の可能な5kg規模精練装置を製作し、本年度の目標を達成した。
英文要約Title: The leading research for extension of utilizing poorly utilizable ferrous scrap (FY2008-2009) FY2008 Annual Report R&D Subject (1): The fundamental research on removing process of tramp element from commercial ferrous scrap: (1-1) Laboratory verification of practicability of removing tramp element: Laboratory experiment on removal of Cu from hot metal with Na-Fe-S flux was carried out using 10kg-scale furnace. Over 33% of Cu in the hot metal was removed.: (1-2) Laboratory verification of treating flux (slag) after removal of tramp element: Mineral phase in the slag after the Cu removal was investigated through X-ray diffraction. Cu was found to form sulfide in the slag which was cooled in both inert and air atmosphere.: (1-3) Theoretical investigation on advantageous metallurgical condition for removing tramp element: Preliminary experiment on Cu removal from hot metal using Na-Fe-S flux was carried out after assembling experimental equipment. Comparing the experimental results with the previous data, the validity of the experimental technique was confirmed.: (1-4) Elucidation of the effect of operating condition on removing rate of tramp element: Aiming to clarify the kinetic parameter of Cu removal from hot metal, preliminary experiment with sulfide flux was carried out. The equilibrium minimum Cu content was confirmed using said flux.: (1-5) Theoretical investigation on processing and recycling flux (slag) after removal of tramp element: Various isothermal section of the phase diagram for Na-Fe-Cu-S system was established and showed the presence of copper-containing solid phase. : R&D Subject (2): Fundamental researches on sustainable valuable metals and extending of application of poorly utilizable ferrous scraps utilizing Cu-Fe two phase separation: Our focus is placed on 1) a practical realization of high technology on application of poorly utilizable ferrous scraps, 2) an establishment of the sustainable valuable metals system. Our research aims to clarify technological issues and break-through points in order to achieve the above two goals by utilizing Cu-Fe two phase separation as one of the technology seeds.: (2-1) Fundamental test for finding the optimum condition of Cu-Fe two phase separation: Test furnace available for melting several tens kg of metals and alloys was manufactured in order to investigate the effect of size-factor on the stability of Cu-Fe two phase separation for scale up of Cu-Fe two phase separation. Cu and Fe including C (total 10 kg) were melted with test furnace, which confirms that the Cu-Fe two phase separation is occurred in kg-scale.: (2-2)Fundamental research on distribution of valuable metals in Cu phase and Fe phase: The test for melting Cu, Fe and C with adding valuable metals was conducted for investigating the effect of size-factor on the distribution of valuable metals.: (2-3) Exploration of the application of poorly utilizable ferrous scraps: The application areas of hardly utilizable ferrous scraps were clarified by considering the compositions of Cu phase and Fe phase after Cu-Fe two phase separation.
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