Effect of CO_2 on Vanadium Extraction and Thermal Effect in Top-Bottom Combined Blowing Converter

摘要

In order to better study the application of CO_2 in the vanadium extraction process of a combined blowing converter, the simulation experiment of combined injection was carried out under laboratory conditions by changing the injection ratio of CO_2 and O_2 at the initial injection temperature of 1∶10, 2∶10 and 3∶10 (the flow rate of O_2 is 600 ml/min and the flow rate of CO_2 varies proportionally according to the flow rate of O_2). The oxidation of carbon and vanadium in the molten pool and the thermal effect of molten pool under different bottom blowing flow rates were studied. The experimental result shows that with the increase of bottom blowing strength, vanadium-extraction and carbon conservation can be improved. If the flow rate of CO_2 increases by 10%, the temperature of molten pool decreases by about 5-7 °C and the heat from molten pool decreases by about 1.3857-2.0214 kJ.