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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 silicon sinter samples with different carbon content was determined by mercury porosimetry, and the fractal characteristics of pore distribution were calculated by multifractal theory. The results show that with the increase of carbon content, the spectral width Δα is the smallest when the content of carbon is about 3.7%, and the value of Δf (α) changes from negative to positive, indicating that the maximum probability element number of the sample increases relatively, The minimum probability of the number of elements is relatively reduced, sinter has a better multifractal structure, fractal features better. With the further increase of the carbon content, the pores will become smaller and the fractal features become less obvious. The results of the metallurgical properties of the samples show that when the carbon content is 3.7%, the comprehensive metallurgical properties are the best.