Study On Fractal Two-dimensional Structure Of Low Silicon Sinter

The influence of different R, MgO and SiO2on metallurgical properties of lowsilicon sinter was analyzed based on fractal theory and metallurgical properties of lowsilicon sinter. The sintering experiments of low silicon sinter were conducted with hightemperature co-focal microscopy and the apparent morphology of sinter samples wasobserved with metallographic microscope and SEM. The relationship betweenmetallurgical properties and fractal theory was established by measuring multifractalspectrum of the two dimensional structure under multiracial theory.According to the analysis of metallographic bitmap in different process conditionswith the values of multifractal singular spectrum function α~f(α), spectral width△α and△f(α), f(α)max, it can be obtained that: low silicon sinter has a good multifractalstructure. Specific research results are as follows:1) With the increase of basicity (R), multifractal spectrum spectral width△αdecreases gradually, and f(α)max value decreases after the first increases, and reachesthe maximum value when R is2.0. And it can be obtained that Fe2O3and CaO·Fe2O3,produce and distribution are better when R is2.0by observing the two-dimensionalmorphology of different basicity low silicon sinter, this is consistent with themetallurgical properties of the low silicon sinter.2) When the content of MgO is2.4%, the multifractal spectrum spectral width△αreaches a minimum, multifractal spectrum f(α)maxreaches maximum. The greater thenumber of Fe3O4and the more evenly of distributes are, the better of the fractalcharacteristics is, and the metallurgical properties achieve the best value basically in thiscondition. The result indicates that the content of MgO can improve the metallurgicalproperties of low silicon sinter..3) When the SiO2is4.8%, multifractal spectrum spectral width△α reaches aminimum, multifractal spectrum f(α)maxreaches a maximum. The greater the number ofFe3O4and CaO·Fe2O3, and the more evenly of distribute are, the better of the fractalcharacteristics is, and the metallurgical properties are well in this condition.It is feasible to study the metallurgical properties of low silicon sinter withmultifractal theory, so a new way for researching the metallurgical properties of lowsilica sinter and guiding the actual production is provided.