2011 Fiscal Year Final Research Report
Development of Slag-making Technology
| Project/Area Number |
21246114
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 |
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| Co-Investigator(Kenkyū-buntansha) |
MATSUBAE Kazuyo 東北大学, 大学院・工学研究科, 准教授 (50374997)
TANIGUCHI Shoji 東北大学, 大学院・環境科学研究科, 教授 (00111253)
SHIMASAKI Shinichi 東北大学, 大学院・環境科学研究科, 助教 (00447145)
HIROTA Noriyuki 独立行政法人物質・材料研究機構, ナノセラミックスセンター, 主任研究員 (10302770)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 製鋼スラグ / リン資源 / マンガン資源 / 磁気分離 / 脱リンスラグ |
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| Research Abstract |
Magnetic separation was applied to the recovery of manganese and phosphorus from dephosphorization slag and chromium from EAF slag. Dephosphorization slag consists of phosphorus enriched phase and manganese enriched phase together with matrix phase. The magnetic property of each phase has found to be significantly different. In the present experiment, about 31%of phosphorus enriched slag could be recovered at untrapped 3 of 0. 30T and about 14%of manganese enriched slag could be recovered with less than 20%of phosphorus enriched phase contamination at trapped of 0. 03T, particle size of less than 32μm with physical agitation. Chromium was also recovered from EAF slag as iron-chromite with about 50%of Cr. It was thus demonstrated from the present experimental results that phosphorus, manganese and chromium can be recovered from steelmaking slag which can be recognized as their secondary resource.
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