Study On Fractal Structure And Metallurgical Performance Of Low Silicon Sinter

With the combination of fractal theory and metallurgical properties of low siliconsinter, the influence of metallurgical properties in different content of R, MgO, SiO2andC is analyzed on the condition of existing experiment and fuel, and by using themercury intrusion machine it measured the volume of micro-pore structure after brokenof low silicon sinter; and it combined with the multifractal theory measured multifractalspectrum for the pore structure, which is established the relationship between with themetallurgical properties and fractal theory.According to analysis of the values of multifractal singular spectrum function α~f（α）, spectral width△α and△f（α）, we can be obtained that: at different processconditions, the pore volume and pore size distribution have a good multifractal structure,which is measured by pressure mercury analyzer. Specific research results are as follows:1）When R>2.0,△α reaches a minimum value of1.1909,△f（α）=-0.1414, as Rincreases or decreases△f（α） is greater than zero, which explained that the pore has agood fractal structure and pore size distribution is more uniform when R>2.0, and itfinds that the metallurgical properties are well by study in this condition.2）With increasing of the content of SiO2,△α is decreases,△（fα）is also changes,which explain that the more evenly of distribute is and the better of the fractalcharacteristics is, and it just consistents that the experimental metallurgical properties.3）When MgO=2.6%,△α is minimum, and fractal structure is best, and studyfound that the metallurgical properties achieve the best value basically at this time. Theresult indicated that the amount of MgO content can improve the metallurgical properties.4）With the increase of the amount of carbon,△α will decrease and then increasegradually, and△（fα）also changes, when carbon content of3.7%,△α is minimum, and△f（α）=-0.1414, the more uniform distribution, the better to improve the metallurgicalproperties, which is just content to the experiment.It is feasible to study that the metallurgical properties of low silicon sinter by usingof multifractal theory, and a new way for researching the metallurgical properties of lowsilica sinter and then it guides the actual production is provided.