Mathematical Modeling of Sintering Air Leakage through Holes

Jin Cai, Xiangwei Kong and Mingzhu Yu
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Jin Cai: School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
Xiangwei Kong: School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
Mingzhu Yu: School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China

Energies, 2022, vol. 15, issue 12, 1-19

Abstract: The air leakage in sintering machines affects the technological and economic indexes of the sintering process. It is of great significance to monitor and estimate the key areas. Mathematical models of sintering air leakage through holes in the steady-state process are given based on the fluid mechanics to predict the flow rate and effect on the key area. It was found that the hole model is the application of constant orifice outflow in the computation of sintering air leakage. The counter-flow bed model is suitable for predicting the flow rate through a complete break in sintering wind boxes. Furthermore, This paper proposes a new hole–bed generalized model to cover all the possible hole diameters for further high-precision application. The model connects the leakage hole diameter with the sintering process for the first time and establishes their coupling relationship. The pressure state in the sintering system depends on the ratio of the leakage hole area to the sintering bed area. The proposed fast estimation models are a step forward in developing more precise and powerful calculation tools to foresee the effects and consequences of sintering air leakage. It has a good prospect for reducing and replacing complex manual measurement and bringing some insight into the state of the art that could be improved in the future.

Keywords: the flow rate; mathematical models; sintering air leakage; steady-state (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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