外加电场作用下钢液无污染脱氧工艺

Unpolluted deoxidization technology with applied electric field between metal and slag

为了探索不同外加电场及电极对钢液无污染脱氧的影响,基于电化学反应机理设计制作了适用于工业试验的外加电场钢液净化精炼装置,并开展了相应的数值模拟及工业试验研究。研究表明,在熔渣与钢液间施加外加电场,能有效进行电化学脱氧,最快脱氧速率可达0.001 86%/min。任何增大氧离子传质系数和增大渣金反应面积的方法都可增大渣金间氧离子电流,提高脱氧反应速率。此方法是一种全新的绿色、环保洁净钢精炼工艺,具有十分广阔的应用前景。

In order to explore the influence of various applied electric fields and electrodes on the unpolluted deoxidization of molten steel, a new deoxidization system for commercial experiment and numerical simulation has been designed and fabricated based on the mechanism of electrochemical reaction. And the unpolluted deoxidization technique has been studied when a DC field was applied between the metal and slag. The results show that electrochemical deoxidization can be carried out effectively with the application of electric field at the interface between metal and slag. The maximum deoxidization rate could reach 0.001 86%/min. Both increasing the mass transfer coefficient of oxygen ions and the reaction area of the metal and the slag could increase the oxygen ion current between the steel and slag, so the deoxidization rate could be improved. This technology is new kind of green and environmental steel refining process, which has broad application prospects.