2010 Fiscal Year Final Research Report
Separation and recovery of rare metals by using iron-and steelmaking processes
| Project/Area Number |
20360343
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Metal making engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
INOUE RYO Tohoku University, 多元物質科学研究所, 准教授 (70111309)
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| Co-Investigator(Kenkyū-buntansha) |
ARIYAMA Tatsuro 東北大学, 多元物質科学研究所, 教授 (10436165)
KITAMURA Shinya 東北大学, 多元物質科学研究所, 教授 (80400422)
OKABE Toru 東京大学, 大学院・工学研究科, 教授 (00280884)
YAMAMOTO Takaiku 大阪大学, 大学院・工学研究科, 教授 (60467537)
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| Project Period (FY) |
2008 – 2010
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| Keywords | レアメタル / 鉄鋼製造プロセス / 還元 / 酸化 / 分離 |
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| Research Abstract |
It has been found from the V solubility in pig iron and the distribution ratio between BF slag and pig iron that V in iron ore moves to molten pig iron without carbide precipitation. V and Nb were easily contained in FeO-containing slag in the hot metal pretreatment and BOF process. V concentrated in calcium silicate and CaO-FeO-Al_2O_3 phases, Nb concentrated in CaO-FeO-Al_2O_3 phase, and P concentrated in calcium silicate phase during cooling of slag. Therefore, it was expected that the ore substitute including large amounts of V, Nb and P could be obtained by separating those mineral phases from the other slag phases.
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