Identification of multi-fractal characteristics of silicon content in blast furnace hot metal

作者：Luo Shi hua; Liu Xiang Guan; Zeng Jiu Sun

来源：ISIJ International, 2007, 47(8): 1102-1107.

DOI：10.2355/isijinternational.47.1102

• blast furnace iron-making
• silicon content
• multi-fractal
• generalized Hurst index
• multi-fractal spectrum

An improved approach was proposed to identify the multi-fractal characteristics of silicon content in hot metal from No. 7 BF at Handan Steel, No. I BF at Laiwu Steel and No. 6 BF at Linfen Iron and Steel Group Co. Comprehensive and quantitative details of the partial fluctuant singularity and fluctuant singularity at different levels are displayed through the computation of generalized Hurst index, scaling function and multifractal spectrum. The results confirm the existence of multi-fractal characteristics in the investigated time series. To describe such fluctuation in a single Hurst index or box dimension is insufficient. It is concluded that the theory and methods based on normal distribution, sequence unrelated and single fractal needs addition and amendments.

• 出版日期2007
• 单位浙江大学