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从不同二氧化硅烧结矿的表观形貌出发,对表征烧结矿的分形参数进行解析,发现Δα及f(α)max值的大小表征Fe_3O_4和CaO·Fe_2O_3数量的多少及其分布的均匀程度。且随着SiO_2质量分数的升高,低硅烧结矿其还原性逐渐变差而其抗压强度呈现出逐渐变好的趋势;而当wSiO_2=4.8%时,多重分形谱谱宽Δα达到最小值,多重分形谱最大值f(α)_(max)达到最大值,这就表明,此时不仅低硅烧结矿中的铁酸钙分布较均匀而且生成量最大。所以,随着低硅烧结矿SiO_2质量分数的增大,其还原性逐渐变差,抗压强度逐渐变好。
Based on the apparent morphologies of different sinter, the fractal parameters of sinter are analyzed. It is found that the values of Δα and f (α) max characterize the amount of Fe 3 O 4 and CaO · Fe 2 O 3 and their distribution uniformity . With the increase of SiO 2 mass fraction, the reducibility of low silicon sinter decreases and the compressive strength tends to get better gradually. When wSiO 2 = 4.8%, the multifractal spectrum wide Δα reaches the minimum value , And the maximum value of f (α) _ (max) in the multifractal spectrum reached the maximum, which indicated that not only the calcium ferrite distribution in the low-silicon sinter is more uniform but also the maximum generation. Therefore, with the increase of the mass fraction of SiO_2 in low-silicon sinter, the reducibility becomes worse and the compressive strength becomes better.