Experimental study on smelting reduction of carbon-bearing manganese briquettes in slag bath
Experimental study on smelting reduction of carbon-bearing manganese briquettes in slag bath
复制标题
DOI：
10.1007/s42243-018-0042-2
复制
发表时间：
2018-04
影响因子：
2.5
通讯作者：
Bo Zhang;Da-ping Wang;Bin Chen;Zhennan Su;Z. Xue
中科院分区：
文献类型：
--
作者：
Bo Zhang;Da-ping Wang;Bin Chen;Zhennan Su;Z. Xue
在1550 ~ 1650 °C的温度范围内，对含碳锰团块在渣浴中的还原进行了实验研究。通过差热分析、扫描电镜和能谱分析等手段，分析了含碳锰团块内部温度和显微结构的变化，进一步阐述了含碳锰团块在渣池中熔融还原的机理。结果表明，渣池中型煤熔融还原过程可分为3个阶段，渣温对还原过程中金属颗粒的聚集和长大有显著影响。在本实验条件下，含碳锰团块熔融还原初期的还原速度受化学反应控制，中期和后期的反应速度受气体扩散控制。
The reduction of carbon-bearing manganese briquettes in a slag bath was experimentally investigated at temperatures ranging from 1550 to 1650 °C. Both the internal temperature and the microstructure evolution of the briquettes were analyzed by differential thermal analysis, scanning electron microscopy and energy-dispersive spectrum analysis, and the smelting reduction mechanism of the carbon-bearing manganese briquettes in the slag bath was further elaborated. The results indicated that the smelting reduction of the briquettes in the slag bath could be divided into three stages, and the aggregation and growth of the metallic particles during the reduction were significantly affected by the slag temperature. Under the experimental conditions, the reduction speed at the initial stage of the carbon-bearing manganese briquettes smelting reduction was controlled by the chemical reaction, whereas the reaction speeds at both the middle and following stages were limited by gaseous diffusion.