Analysis of key measures of vanadium extraction from molten iron based on process theory and data mining
The"blast furnace + converter"method is mainstream vanadium titanium ore smelting process in China,and it is of great significance to explore the influence mechanism of final vanadium content of molten iron according to smelting data of vanadium and titanium blast furnace,and quantify the specific parameter control scheme for the effi-cient smelting of vanadium titanium sinter.The mineral composition and smelting mechanism of vanadium-titanium sinter were sorted out,and the thermodynamic characteristics of V and Ti were analyzed by combining the changing curves of Gibbs free energy in different reactions,from the theoretical aspect,which discovers the main conclusion that there was a promoting relationship between molten iron vanadium and titanium content,and an inhibitory rela-tionship between them and TiO2 content in slag.Then,Based on the vanadium-titanium ore smelting data of a steel plant in Chengde,an efficient feature selection algorithm is proposed to extract the influencing characteristics of mol-ten iron vanadium content:first,the Spearman correlation coefficient between the parameters is calculated to deter-mine the correlation,second,the mutual information degree between the parameters is calculated to judge the redun-dancy characteristics,and third,combined the idea of maximum correlation-minimum redundancy with process prin-ciple,17 characteristic variables are finally selected as the main influencing characteristics of molten iron vanadium content,and"information transfer entropy"is introduced,the concept can measure the effect chain transfer phenom-enon in the parameter regulation process of blast furnace.Finally,the specific measures to improve the vanadium content in molten iron were given,and the influence of different parameter adjustments on vanadium content in mol-ten iron was quantified by combining the control variable method.It is conducive to further clarifying the evolution behavior of vanadium and titanium in the blast furnace smelting process,and the analysis results of experimental data provide an operational basis for the regulation of key parameters of vanadium extraction from molten iron,which can promote the stable and efficient smelting of vanadium and titanium blast furnace.In the future,relevant research should be committed to the deeper integration of data analysis and expert experience to promote the intelligent manu-facturing and regulation of vanadium and titanium blast furnaces.
vanadium-titanium sintervanadium extraction from molten ironfeature selectionparameter regula-tionchain transfer phenomenon
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