| In order to improve the manganese yield in reduction of manganese ore in less slag blowing process at BOF, the dissolution behavior of manganese ore in slag has been studied under experimental scale. The effects of temperature, slag composition, addition of CaF₂ and pretreatment of manganese ore on the dissolution behavior into molten slag were examined. Also, the precipitation in slag during addition of manganese ore was examined by EPMA and X-ray diffraction analysis. The dissolution rate of manganese ore into molten slag increased with increasing temperature. The dissolution rate of manganese ore also increased with the increase of initial FeO, MgO, and MnO content in the first stage. The addition of CaF₂ and the pretreatment of manganese ore are very effective to promote the dissolution of manganese ore into slag. |
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