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利用压汞仪测定了不同MgO条件下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MgO含量的增加,烧结矿样品水银浸入增量与孔径尺寸之间的关系满足多重分形理论,当MgO含量为2.6%时,孔隙具有较好的分形结构,气孔尺度分布较均匀,气孔大,气孔率较好,有利于冶金性能的改善。适量的MgO含量可以提高低硅烧结矿的冶金性能,改善炉渣的稳定性、流动性,有利于高炉顺行。
The pore distribution of low-silicon sinter samples under different MgO conditions was measured by mercury porosimetry, and the fractal characteristics of pore distribution were calculated with the multi-fractal theory. The results show that with the increase of MgO content, the relationship between the amount of mercury immersion and the pore size of sinter samples satisfies the multifractal theory. When the content of MgO is 2.6%, the pores have good fractal structure, and the pore size distribution Uniform, large pores, good porosity, is conducive to the improvement of metallurgical properties. Appropriate amount of MgO content can improve the metallurgical properties of low-silicon sinter to improve the stability of slag, liquidity, is conducive to blast furnace in the line.