Research on the Mathematical Model of Local Equilibrium in the Top-Blown Smelting Process of Electronic Waste

Metals

Xiaochun Wen¹  Jinliang Wang¹  Houqing Wang¹ 

[1] Jiangxi Provincial Key Laboratory of Flash Green Development and Recycling, Jiangxi University of Science and Technology, Ganzhou 341000, China;

关键词: local equilibrium;    mathematical model;    top-blown smelting;    simulation system;    electronic waste;   

DOI  :  10.3390/met11101500

来源: DOAJ

【 摘 要 】

In the present study, the local equilibrium modeling and division method of the multiphase non-equilibrium for the top-blowing smelting process of electronic waste was investigated based on the local equilibrium hypothesis. And the mathematical description of the multi-phase equilibrium of each local area and the correlation method between the local areas were studied by analysis of relationships among the valence state, phase, composition, and Gibbs free energy of each element. Afterward, the reaction characteristic data such as melting material, product phase, composition, temperature, atmosphere, etc. were obtained via industrial measurement experiments. Based on these, a mathematical model of local equilibrium for the top-blowing smelting process of electronic waste was established. Finally, the thermodynamic digital simulation system was developed via the calculation of metallurgical process and online control platform MetCal Desk (v7.00, MetCal, Ganzhou, China), which can investigate the element distribution behavior during the smelting process and provide theoretical guidance for the industrial production practice.

【 授权许可】

Unknown