METHOD OF RECOVERING VALUABLE METAL FROM SLAG
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United States of America Patent
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Issued Date -
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app pub date -
Dec 2, 2011
filing date -
Dec 30, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of recovering a valuable metal from slag is disclosed. The method includes the steps of: applying a magnetic field whose magnitude is increased in a stepwise fashion to crushed slag to separate a magnetic material from the crushed slag; and introducing a reductant into the separated magnetic material to recover a valuable metal therefrom. The method is advantageous and cost effective because the recovery rate of iron (Fe) from slag exceeds 50% by using a magnetic field, thus reducing the amount of slag to be wasted.
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| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| KR | B1 | KR101175422 | Dec 30, 2009 |
| EP | A1 | EP2471962 | Jun 25, 2010 |
| WO | A1 | WO2011081265 | Jun 25, 2010 |
| CN | A | CN102471826 | Jun 25, 2010 |
| JP | B2 | JP5656172 | Jun 25, 2010 |
International Classification(s)
- 2011 Application Filing Year
- C22B Class
- 249 Applications Filed
- 194 Patents Issued To-Date
- 77.92 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- C22B Class
- 15.63 % this patent is cited more than
- 13 Age