18.97.14.86
18.97.14.86
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SCIE SCOPUS
각종 천연 크로마이트광의 고체탄소에 의한 환원거동에 관한 연구
Study on the Reduction Behavior of Various Chromite Ore by Solid Carbon
이일옥(I . O . Lee), 정원섭(W . S . Chung), 김동의(D . U . Kim)
UCI I410-ECN-0102-2008-580-001839848

As a fundamental research to establish an efficient process for the solid-state reduction of chromite, reduction behavior of natural chromites were investigated experimentally and interpreted in terms of thermodynamics. The results obtained were as follows; 1) The reduction of oxide components in natural chromite tended to process in the sequence of Fe₃O₄, FeCr₂O₄ and MgCr₂O₄. The tendency was pronounced at low temperatures. 2) Below 1200℃, reduction of chromite proceeded sequentially, i.e. (Mg, Fe)(Cr, Al, Fe)₂O₄→ Fe or Fe₃C+Fe-poor Non-stoichimetric chromite → (Fe, Cr)_7C₃+MgAl₂O₄ 3) Above 1200℃, reduction of chromite proceeded sequentially, i.e. (Mg, Fe)(Cr, Al, Fe)₂O₄ → (Fe, Cr)_7C₃+Non-stoichimetric chromite → (Fe, Cr)_7C₃+MgAl₂O₄ 4) Reduction degree of chromite was higher with increasing Fe/Cr ratio of chromite composition. 5) Reduction rate of various chromite ore by solid carbon is higher in order SA, RM, IH, PH and IM at the same condition.

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