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Vol.50, No.10, 753 ~ 762, 2012
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| Title |
| Study on the Reduction of Molten EAF Slag |
| 주성웅 Seong Woong Joo , 신종대 Jong Dae Shin , 신동경 Dong Kyung Shin , 홍성훈 Seong Hun Hong , 기준성 Jun Sung Ki , 황진일 Jin Ii Hwang , 유병돈 Byung Don You |
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| Abstract |
| The reduction behavior of low level oxides such as (T.Fe), (MnO) and (P2O5) in molten EAF slag was investigated using commercial reductants. In an air atmosphere, the slag volume increased and the reduction rate of the slag was very low due to the oxidation loss of reductants by oxygen in the air. The reduction rate of the slag was also low when a commercial reductant was used alone in an Ar gas atmosphere. The reason is probably because the material transfer through the interface between the slag and reductant is difficult due to the formation of high melting point oxide. When reductants were mixed with burnt lime in order to form low melting point reaction products, the reduction rate of the slag increased up to the range of 45-70%. By using the mixtures of reductants and burnt lime so as to form a low melting point slag at the reaction end, the reduction rate of the slag was improved up to 60-85%. |
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| Key Words |
| Slag, oxides, reduction, reduction rate, reductant |
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