, Volume 33, Issue 1, pp 38–41 | Cite as

Flue Dust Agglomeration in the Secondary Lead Industry

  • Klaus Schwitzgebel
Extractive & Process Metallurgy


A secondary lead smelter produces several tons of bag-house dust a day. Appropriate handling of this dust is mandatory to meet the proposed OSHA and EPA workroom and ambient standards. Dust agglomeration proved a successful approach. Dusts with a high concentration of PbCl2, or compounds containing PbCl2 can be agglomerated at much lower temperatures than samples with low PbCl2 concentrations. The chlorine sources are polyvinyl chloride (PVC) battery plate separators. Since PVC is used in Europe to a much greater extent than in the U.S., the composition of feedstock must be considered in equipment selection at U.S. secondary smelters. The vapor pressure characteristics of PbCl2 favor its evaporation at blast furnace temperatures. Condensation occurs in the gas cooling system. Recycling of baghouse dust leads to a buildup of PbCl2 in the smelter. Its removal from the system is eventually necessary through leaching, if charges with a high PVC content are processed.


Dust Blast Furnace PbCl2 Lead Sulfate Baghouse 
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Copyright information

© The Minerals, Metals & Materials Society 1981

Authors and Affiliations

  • Klaus Schwitzgebel
    • 1
  1. 1.Radian CorporationAustinUSA

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