镁质熔剂性球团矿相的多重分形谱

The pellet mineral phase microstructure determines its metallurgical physicochemical properties. In order to understand the dependence relationship between the pellet microstructure and its macroscopic metallurgical physicochemical properties, the primary key problem to be solved is the extraction and quantitative characterization of the microscopic visual features of the mineral phase. Taking the microscopic mineral phase of magnesia fluxed pellets as the research object, on the basis of intuitive analysis of the visual features of the mineral phase, the multifractal spectrum analysis method is used to extract the quantitative characterization value (fα) of the microscopic multifractal spectrum of the mineral phase, and the migration laws of the symmetry eigenvalue Δf, the spectral width eigenvalue Δα, and the capacity dimension eigenvalue D(0) derived from (fα) with the change of basicity and with the change of the mineral phase detection position are respectively deeply explored. The research results show that the color features presented by the microscopic visual features of the mineral phase in the HSV color space do not have significant differences in the change of basicity and position; in the microscopic multifractal spectrum analysis of the mineral phase, the three eigenvalues Δf, Δα, and D(0) have significant differences in the change of basicity and position, and can well characterize the basicity migration law and the position migration law.

球团矿相微观结构决定其冶金物理化学性能,为透视球团矿微观结构与其宏观冶金物理化学性能之间的依赖关系,需要解决的首要关键问题是矿相微观视觉特征的提取与定量表征。以镁质熔剂性球团微观矿相为研究对象,在直观分析矿相视觉特征的基础上,采用多重分形谱分析方法,提取矿相的微观多重分形谱定量表征值(f α),并分别深度挖掘由(f α)衍生出的对称度特征值Δf、谱宽特征值Δα、容量维特征值D(0)随碱度变化的迁移规律和随矿相检测位置变化的迁移规律。研究结果表明,矿相微观视觉特征在HSV颜色空间上呈现的颜色特征未在碱度变化和位置变化上存在显著差异性;矿相微观多重分形谱分析中,Δf、Δα、D(0)3个特征值在碱度变化和位置变化上有显著的差异性,可以很好地表征碱度迁移规律和位置迁移规律。