Abstract
By adding BF dust into molten BF slag, it was conducted to explore the feasibility of carbon-thermal reduction of BF dust in molten BF slag bath. The experimental results indicate that, BF dust can achieve self-reduction in the bath. It is convenient for the reduction products that are iron-based metal particles separating from slag. Besides, the reduction of BF dust is endothermic. When the mass ratio between BF slag and BF dust is 10:1, the temperature of BF slag after reduction can meet the requirement of dry processing treatment. According to the comparison by X-ray diffraction, the main mineral phases of BF slag are relatively stable before and after reduction. Undoubtedly, it is a novel method to cope with the metallurgical solid waste in molten BF slag bath.
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