变配碳量条件下低硅烧结矿孔隙分布的多重分形研究

Multi-Tractional Research on Pore Distribution in Sintered Ore With Different Carbon

利用压汞仪测定了不同配碳量的低硅烧结矿样品的孔隙分布,结合多重分形理论计算了其孔隙分布的分形特征。研究结果表明,随着配碳量的增加,当配碳量为3.7%附近时其谱宽Δα最小,Δf(α)值由负值变成正值,表明试样最大概率元素数目相对增多,最小概率元素数目相对减小,烧结矿具有较好的多重分形结构,分形特征较好。随着配碳量的进一步增加,气孔将变小,分形特征又变得不太明显。样品冶金性能的测定结果表明:当配碳量为3.7%时,其综合冶金性能最佳。

The pore distribution of low silica sinter samples with different C was measured by pressure mercury, and 1be fractal characteristic of pore distribution was calculated with multifractal theory. With the amount of C in creasing, △α is the least when the mass percent of C is 3.7%, furthermore, the value of △f（α） changes from negative to positive in the vicinity 3.7 %, the number of maximum probability element increases relatively, so the sinter has good multiple fractal structure and fractal features. If the amount of C continues increasing, the size of pores will drop, then fractal features will becomes less pronounced. The results also show when the mass percent of C is 3.7 %, its metallurgical properties is optimal.