Numerical Simulation of Gas-Particle
Two-Phase Chemical Reactions and Key
Structure Optimization in the Lead Flash
Smelting Furnace
Kaile Tang, Ling Zhang, Leru Zhang and Fubing Tu
Abstract In this paper, the numerical simulation of the temperature field and the
velocity field of the reaction tower in the lead flash smelting furnace was carried out
by the numerical simulation. The concentrate particles were tracked by the DPM
model, and the particle reaction model was used to trace the particle combustion.
The numerical model was verified with the thermocouple data in the industrial furnace, and the percentage error was within 4.5%. The study found that the highest
temperature zone located at about 1.5 m from the top of the tower. The highest SO 2
concentration was in 2.5 m below the nozzle. In addition, this paper uses a central
single nozzle to analyze the coke area distribution in the furnace which greatly simplified the lead smelting process. It is found that the single nozzle arrangement could
have the uniform distribution of coke, which could use in the future design of the
furnace.
Keywords Flash smelting · Numerical simulation · Lead smelting furnace
Introduction
The flash lead smelting process [1] has been considered to be the most advanced,
mature, and most effective direct lead smelting method in the world today. From
the point of view of metallurgical principles, the most important feature of the flash
smelting method is the oxidation and reduction atmosphere combined in one furnace. A partition wall is used to divide the flash smelting furnace into the smelting
shaft oxidation melting zone and an electric furnace reduction zone. The smelting
process is completed in a closed, compact furnace, eliminating the need for a sintering process. Process is continuous and can achieve a high degree of automation,
significantly reducing worker operations and reducing production costs the above.
K. Tang (B) · L. Zhang · L. Zhang
CINF Engineering Co., Ltd., Changsha 410011, Hunan, People’s Republic of China
e-mail: 373731806@163.com
F. Tu
Central South University, Changsha 410011, Hunan, People’s Republic of China
© The Minerals, Metals & Materials Society 2020
A. Siegmund et al. (eds.), PbZn 2020: 9th International Symposium
on Lead and Zinc Processing, The Minerals, Metals & Materials Series,
https://doi.org/10.1007/978-3-030-37070-1_40
469
Two-Phase Chemical Reactions and Key
Structure Optimization in the Lead Flash
Smelting Furnace
Kaile Tang, Ling Zhang, Leru Zhang and Fubing Tu
Abstract In this paper, the numerical simulation of the temperature field and the
velocity field of the reaction tower in the lead flash smelting furnace was carried out
by the numerical simulation. The concentrate particles were tracked by the DPM
model, and the particle reaction model was used to trace the particle combustion.
The numerical model was verified with the thermocouple data in the industrial furnace, and the percentage error was within 4.5%. The study found that the highest
temperature zone located at about 1.5 m from the top of the tower. The highest SO 2
concentration was in 2.5 m below the nozzle. In addition, this paper uses a central
single nozzle to analyze the coke area distribution in the furnace which greatly simplified the lead smelting process. It is found that the single nozzle arrangement could
have the uniform distribution of coke, which could use in the future design of the
furnace.
Keywords Flash smelting · Numerical simulation · Lead smelting furnace
Introduction
The flash lead smelting process [1] has been considered to be the most advanced,
mature, and most effective direct lead smelting method in the world today. From
the point of view of metallurgical principles, the most important feature of the flash
smelting method is the oxidation and reduction atmosphere combined in one furnace. A partition wall is used to divide the flash smelting furnace into the smelting
shaft oxidation melting zone and an electric furnace reduction zone. The smelting
process is completed in a closed, compact furnace, eliminating the need for a sintering process. Process is continuous and can achieve a high degree of automation,
significantly reducing worker operations and reducing production costs the above.
K. Tang (B) · L. Zhang · L. Zhang
CINF Engineering Co., Ltd., Changsha 410011, Hunan, People’s Republic of China
e-mail: 373731806@163.com
F. Tu
Central South University, Changsha 410011, Hunan, People’s Republic of China
© The Minerals, Metals & Materials Society 2020
A. Siegmund et al. (eds.), PbZn 2020: 9th International Symposium
on Lead and Zinc Processing, The Minerals, Metals & Materials Series,
https://doi.org/10.1007/978-3-030-37070-1_40
469