Nonlinear system identification of the reduction nickel oxide smelting process in electric arc furnace

2017 5th International Conference on Mechanical Engineering, Materials Science and Civil Engineering

机械制造;材料科学;土木建筑工程

Gubin, V.^1 ; Firsov, A.^1

Candidate of Technical Sciences, Saint-Petersburg Mining University, Russia^1

关键词: Electric arc furnace;    Electrical parameter;    Hammerstein-Wiener models;    Indirect measure;    Material compositions;    Melt compositions;    Operational control;    Qualitative compositions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/324/1/012056/pdf
DOI  :  10.1088/1757-899X/324/1/012056

来源: IOP

【 摘 要 】

As the title implies the article describes the nonlinear system identification of the reduction smelting process of nickel oxide in electric arc furnaces. It is suggested that for operational control ratio of components of the charge must be solved the problem of determining the qualitative composition of the melt in real time. The use of 0thharmonic of phase voltage AC furnace as an indirect measure of the melt composition is proposed. Brief description of the mechanism of occurrence and nature of the non-zero 0thharmonic of the AC voltage of the arc is given. It is shown that value of 0thharmonic of the arc voltage is not function of electrical parameters but depends of the material composition of the melt. Processed industrial data are given. Hammerstein-Wiener model is used for description of the dependence of 0thharmonic of the furnace voltage from the technical parameters of melting furnace: the melt composition and current. Recommendations are given about the practical use of the model.