Flue Dust Agglomeration in the Secondary Lead Industry
- 8 Downloads
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.
KeywordsDust Blast Furnace PbCl2 Lead Sulfate Baghouse
Unable to display preview. Download preview PDF.
- 1.Federal Register 43 (220) Tuesday, Nov. 14,1978, p. 52952.Google Scholar
- 2.Federal Register 43 (194) Thursday, Oct. 5, 1978, p. 46246.Google Scholar
- 3.R.T. Coleman and R. Vandervort, “Source Characterization of the SB Smelting Furnace,” Contract No. 210-77-0008, 1978.Google Scholar
- 4.R.T. Coleman and R. Vandervort, Demonstration of the Bergsoe Agglomeration Furnace and Best Management Practices at a Secondary Lead Smelter, Radian Report DCN 79-201-010-02, 1979.Google Scholar
- 5.T.S. Mackey and Svend Bergsøe, “Flash Agglomeration of Flue Dust,” J. Metals 29 (11) (1977), p. 12.Google Scholar
- 6.J.W. Mellor, Comprehensive Treatise on Inorganic and Theoretical Chemistry, Vol. 7, New York, Longmans, Green, and Co., 1927. p. 728 and 736.Google Scholar
- 7.Karl Keckan, Ford Motor Company, Battery Division, telephone communication, June, 1980.Google Scholar
- 8.F.C. Keller, East Penn Manufacturing Company, Inc., Lyons Station, Pennsylvania, oral communication, August, 1980.Google Scholar
- 9.Handbook of Chemistry and Physics, 59th Edition, CRC Press, 1978-1979, D-235—D-239.Google Scholar
- 10.Handbook of Chemistry and Physics, 59th Edition, CRC Press, 1978-79, B-129.Google Scholar