Paper Title:
Designing on Magnetic Seal Ash-Unloader without Abrasion
  Abstract

The rigid seals currently being used for the ash unloading device with the impeller under the hopper of the electrostatic precipitator are easy targets of wear and tear. In addition, the airproof capability of these seals is not perfect. In this light, an advanced powder magnetic seal design which installs permanent magnets at the top of the vane and utilizes the magnetism of Fe3O4 in fly ash to seal the space between two vanes is discussed in this paper. In the self-designed device, three categories of permanent magnet parameters and four kinds of powders with respective with respective magnetic powder mass fractions of 7%, 9%, 12%, and 15% were chosen. The airproof capability was also measured. The results show that this device has excellent airproof capability, can withstand wear and tear, and has a low replacement frequency.

  Info
Periodical
Advanced Materials Research (Volumes 148-149)
Edited by
Xianghua Liu, Zhengyi Jiang and Jingtao Han
Pages
758-762
DOI
10.4028/www.scientific.net/AMR.148-149.758
Citation
L. Q. Qi, Y. T. Yuan, "Designing on Magnetic Seal Ash-Unloader without Abrasion", Advanced Materials Research, Vols. 148-149, pp. 758-762, 2011
Online since
October 2010
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Price
$32.00
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