METHOD OF RECOVERING VALUABLE METAL FROM SLAG
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United States of America Patent
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app pub date -
Dec 2, 2011
filing date -
Dec 30, 2009
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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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