2016 Fiscal Year Final Research Report
Construction of magnetite recovery process from slag based on process mineralogy
Project/Area Number |
15K14278
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Earth system and resources engineering
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Research Institution | Waseda University |
Principal Investigator |
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Project Period (FY) |
2015-04-01 – 2017-03-31
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Keywords | リサイクル / スラグ / 分離濃縮 / 物理選別 / 徐冷 |
Outline of Final Research Achievements |
As one of the new applications of copper smelting slag, we aimed to construct a process of slowly cooling for the slag, crystallizing magnetite, and separating by physical separation. Focusing on the magnetite expected as both iron resources and a carrier of many other useful metals, the influence on the production amount and grain size of magnetite by process conditions such as slow cooling rate and temperature retention was systematically examined using both the simulated and the actual slag. It was confirmed that grain size that is enough for physical separation can be obtained by slow cooling rate under 3 K / min. After slow cooling, by grinding and high gradient wet magnetic separation, it was confirmed that magnetic products with equivalent iron grade without copper contamination could be obtained.
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Free Research Field |
資源循環工学
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