Fe-C熔体与熔渣反应的电化学机理

ELECTROCHEMICAL MECHANISM OF REACTION BETWEEN Fe-C MELT AND SLAG

研究了含碳金属熔体与CSO—SiO2—Al2O3—FeOx熔渣体系反应的电化学机理．实验表明，在敞开体系中，无论金属熔体与熔渣之间是否存在电子导体，随着气相氧分压的降低，金属熔体的最终碳含量均逐渐增大，反应速率逐渐减小．但有电子导体贯穿反应体系时，熔体的最终碳含量远低于无电子导体的情况，其反应速率是后者的2～3倍．可以推断：氧离子在渣中的传递受控于电子的传递，电子导体的存在为电子的传递提供了一条捷径，因而加快了氧离子的传递．

The electrochemical mechedsm of reduction reaction between Fe-C melt andC aO-SiO 2 -Al2 O 3 -Fe O x slag systems was investigated. Experimeat al result s suggested that inthe open system, the final content of carbon in melt increased as partial pressure of Oxygendecreased no matter whether there was or not electrolilc conductor. But the final content ofcarbon in the system with electronic conductor was much lower than that without electronicconductor. It can be deduced that the transfer ability of Oxygen in slag is dominated byelectron conduction, when an electronic conductor was present. It provides an easy pathwayfor electrons, thus accelerating the oxygen transfer rate.