NOUFERROUS METALLURGICAL EQUIPMENT

With the porous fibrous ceramic tube used as filtration medium, the dust-removal process using zero-baselined high voltage pulse as dust pre-charging means was investigated. The influence of maxima of high voltage pulse upon the dust-removal results was analyzed. It is revealed by the results: zero-baselined high voltage pulse could benefit the filtration of Al(OH)3 dust with size in micrometer scale, however, it exhibits weak influences upon nano-scaled fumed silica. In this paper, we analyzed the cause of the phenomenon mentioned above in the perspective of charging mechanism of high voltage pulse. It could be concluded from the results that: as for the normal industrial micro-meter scaled powder, pre-charging dusts with zero-baselined high voltage pulse is a very effective promoting tactic for dust removal.