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以氧化铁为脱碳剂,研究了加热方式、高能球磨对高碳锰铁固相脱碳过程的影响。通过化学分析和红外碳硫仪检测样品中的锰含量和碳含量,采用扫描电镜观察了材料的显微组织。结果表明,真空电阻炉加热条件下,高能球磨30h的高碳锰铁混合料,在1000℃保温2h脱碳率达到75%以上,锰挥发率低于15%。采用微波烧结能在较低温度发生反应,且反应速率快,脱碳效率高,锰的挥发率少。球磨30h的高碳锰铁和氧化铁混合料在1000℃保温10min,脱碳率达到80%以上,锰挥发率低于10%。
With iron oxide as decarburizing agent, the effect of heating mode and high-energy ball milling on the solid-phase decarburization of high carbon ferromanganese was studied. Through chemical analysis and infrared carbon and sulfur analyzer detection of manganese and carbon content in the sample, the microstructure of the material was observed by scanning electron microscopy. The results show that under the condition of heating in vacuum resistance furnace, the high-energy ball milling 30h high-carbon ferromanganese mixture at 1000 ℃ insulation 2h the decarburization rate reached more than 75%, manganese volatilization rate less than 15%. Microwave sintering can react at lower temperature, and the reaction rate, decarburization efficiency, less volatile manganese. The 30h high carbon ferromanganese and iron oxide mixture was incubated at 1000 ℃ for 10min, the decarburization rate reached more than 80% and the volatilization rate of manganese was less than 10%.