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Vol. 161, Issue 12, December 2013, pp. 271-276

 

Bullet

 

Numerical Simulation of Airflow Temperature Field in Rotary Kiln
 
1, 2 Gongfa Li, 2 Jia Liu, 2 Hegen Xiong, 2 Jianyi Kong, 2 Zhen Gao, 2 Wentao Xiao, 2 Yikun Zhang, 2 Fuwei Cheng

1 Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources

2 College of Machinery and Automation, Wuhan University of Science and Technology, Wuhan 430081 China

1 Tel.: 027-68862283, fax: 027-68862283
E-mail: ligongfa@wust.edu.cn

 

Received: 30 September 2013   /Accepted: 22 November 2013   /Published: 30 December 2013

Digital Sensors and Sensor Sysstems

 

Abstract: With the continuous development of the metallurgical industry, kiln calcinations increasingly sophisticated technology, the kiln equipment technology more emphasis on performance. The rotary kiln is one of the most representatives of the furnace equipment, also put forward higher requirements in response to the call of the national energy saving rotary kiln, and want to be able to design the optimal energy consumption and stable performance equipment. To analyze the energy consumption of the rotary kiln and it is necessary to study the heat transfer process of the rotary kiln. The stability of the thermal system is directly related to the sintering material quality, and kiln gas temperature is an important factor influencing thermal system, therefore, it has the very vital significance to research air temperature distribution inside the rotary kiln. Firstly, to determine the flame temperature of the kiln and throughout the heat transfer coefficient, then analyzed air temperature field distribution inside the rotary kiln which using different fuels and different wind speed, found that change trend of rotary kiln internal air temperature field along the long direction of the kiln was basically the same when gas and methane as fuel, and the temperature of each part in the length of rotary kiln was also very close. The internal air temperature in rotary kiln is higher than of 2000 Pa when the induced draft fan discharge pressure is 8000Pa, and to extend the length of high temperature calcination zone. We actualized the flame and the heat flow simulation for rotary kiln according to the working condition of the rotary kiln to simulate the combustion, which was indicate the method of the simulation of combustion flame was feasibility and accuracy.

 

Keywords: Airflow, Rotary kiln, Temperature field, Numerical simulation, Simulation.

 

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