Novel recycling process of ferro-alloy using steelmaking slag
| Project/Area Number |
26289278
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Metal making/Resorce production engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
KITAMURA SHINYA 東北大学, 多元物質科学研究所, 教授 (80400422)
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| Co-Investigator(Kenkyū-buntansha) |
金 宣中 東北大学, 多元物質科学研究所, 助教 (40724430)
高 旭 東北大学, 多元物質科学研究所, 教育研究支援者 (80707670)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2016: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2015: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2014: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Keywords | 製鋼スラグ / マンガン / リン / 硫化 / 浸出 / 金属生産工学 / 廃棄物資源化 / 反応・分離工学 / 燐 / 抽出 / フェロアロイ / 廃棄物再資源化 |
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| Outline of Final Research Achievements |
Ferro alloy can be produced by steelmaking slag using carbothermic reduction as it contains Mn and Cr. However, as P is also reduced, its value is low. The purpose of this research is the development of recovery process of Mn and Cr as ferro alloy by the separation of P from them. The elemental technologies are (1) separation of Mn and P by sulfurization, (2) selective leaching of P-rich water soluble phase in slag. For the technology (1), by the fundamental test and reaction model, multi-sulfurization process was proposed. However, the Mn yield was only 45% and ratio of Mn to Fe was 0.46. For the technology (2), by the leaching of oxidized slag after slow cooling using citric acid, without the dissolution of matrix, 99% of P was recovered selectively.
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Report
(4 results)
Research Products
(7 results)
