| 摘要 |
PURPOSE:To advantageously melt and reduce chrome ore in the manner of practical operation by charging molten mother pig iron and the chrome ore into a composite blowing converter, melting the chrome ore, slagging it, adding coke to carry out carburization reduction, and subjecting the resulting molten high-C pig iron contg. Cr to decarburization refining. CONSTITUTION:Molten mother pig iron and chrome ore are charged into a composite blowing converter, a flux is added, and the chrome ore is rapidly melted and slagged by blowing an inert gas for agitation from the bottom and oxygen for refining from the top. While the inert gas is blown from the bottom, coke is added to carry out carburization reduction. At this time, the oxygen blowing may be continued. The resulting molten high-C pig iron contg. Cr is separated from slag, charged into a decarburization refining furnace and subjected to decarburization refining. |
