【摘要】 采用以氮气为工作气体的非转移等离子枪，在密闭熔炼炉内熔化块状高碳铬铁，加热至１６００℃后开始由顶部向熔池供氧降碳，同时继续加热使熔池温度维持在高于１７５０℃，熔池底部通氮气搅拌．试验获得了含碳，铬分别为０．４５％，２０．２５％和０．４２％，７０．２５％的低碳铬铁，铬的氧化损失保持在５％以下．关键词更多还原

【Abstract】 By a non-transformed arc plasma torch whose gas is nitrogen,scrap of high-carbon ferrochrome was heated and melted in a sealed furnace. When the liquid bath was at 1600℃,top blowing of oxygen began to decrease the bath’s carbon without stopping plasma operation for its temperature addition and maintennace of at least 1750 ℃. The liquid bath was agitated by bottom-blowning nitrogen. In the experiments low carbon Fe-Cr have been obtained whose composition respectively was 0.45% carbon,50.75% chrome and 0.42% carbon, 70.25% chrome. Loss of chrome could be less than 5%.更多还原