Study on Properties of Fluxed Pellets Based on Fractal Theory
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摘要: 为了探究熔剂性球团孔结构以及碱度对熔剂性球团性能的影响,采用压汞试验法,结合分形理论,通过对试验数据的分析及球团图像的处理,利用软件仿真,得到了球团孔径分布的多重分形谱拟合曲线。分析曲线可得:碱度与熔剂性球团的抗压强度大致呈二次函数关系,当碱度为1.0时,熔剂性球团的抗压强度最大,达到3 753 N;碱度与熔剂性球团的孔径大小大致呈正相关关系,且随着碱度增大孔径分布由均匀化向非均匀化逐渐转变,并在R=1.0时,均匀性最佳。Abstract: To investigate the pore structure of the fluxed pellets and the effect of basicity on the properties of the fluxed pellets,based on the mercury theory intrusion and the fractal theory,the multifractal spectrum fitting curve of the pore size distribution of the pellets was obtained by numerical simulation and analysis of the pellet image.The results show that the compressive strength of the fluxed pellets is approximately quadratic function of basicity.When the basicity is 1.0,the compressive strength of the fluxed pellets is the highest value of 3 753 N. The pore size distribution gradually changed from homogenization to nonuniformity with the increaseing of basicity and reaches the optimum size when R is 1.0.
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Key words:
- fluxed pellets /
- fractal theory /
- least square fit /
- numerical emulation
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