Study of Dust Production Mechanisms during the Rotary Dumping of Powdered Materials in Hemi-Enclosed Space

Abstract:

This paper presents the airflow distribution and the dust production mechanisms due to the rotary dumping of powered materials in a hemi-closure space using theoretical method and numerical simulations, as well as the measurement results. The materials make parabolic movements and cause the splash of the dust by impacting with the static dust and walls of the storage. The dust volume relates to the height difference of the materials dumping and horizontal velocity of the dust. The further diffusion of dust is affected by several kinds of airflow with fan airflow which is the main factor. The calculative formula for the airflow volume is given, which can also be used in the similar ventilation and dust removal system directly.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 1624-1630
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.1624
• Online since: February 2013
• Authors: Sheng Hua Zou, Deng Chun Zhang, Wei Yin, Si Zou
• Keywords: Hemi-Enclosed Space, Mechanism of Dust Production, Powered Materials, Rotary Dumping

References

[1] Jianguo Shi, Qingxi Mao, Lihua Sun, The experiment research of welding soot pollution control in the closure space, Journal of Tongji University, 23(1995): 683-686.

[2] Yanyan Hu, Yongjing He, Reformation of ventilation and dust removal system in the underground ditch for unloading the coal and the transports station, Electric Power Construction, 24(2003): 52-53.

[3] Yuze Jiang, Bingquan Wang, Computer simulation of the local cleaning in the ventilation and dust removal system, The Anshan steel company technique, 12(1992): 31-37.

[4] Wengang Yan, Ventilation and dust removal in the blast furnace, The industry safety and dust prevention, 11(1998): 2-3.

[5] S. V. Patanker, The numerical value calculation of heat transfer and air fluid flow, Science Press, Beijing, (1984).

[6] Wenquan Tao, Numerical Heat Transfer, Xi'an Jiaotong University Press, Xi'an, (2001).

[7] G. K. Batchelor, An Introduction to Fluid Dynamics, Cambridge Univ. Press, Cambridge, England, (1967).

[8] B. E. Launder and D. B. Spalding, The Numerical Computation of Turbulent Flows, Computer Methods in Applied Mechanics and Engineering, (1974).

DOI: 10.1016/0045-7825(74)90029-2

[9] Guangfa Tang, Hanqing Wang, Wenhu LU, The air flow numerical simulation and model experiment, Hunan University Press, Changsha, (1989).