Purification of secondary zinc materials contaminated with chlorine.
Hager-JP; Lemons-JF Jr.
Recycle and secondary recovery of metals: proceedings of the International Symposium on Recycle and Secondary Recovery of Metals and the Fall Extractive and Process Metallurgy Meeting, December 1-4, 1985, Fort Lauderdale, Florida. Taylor PR, Sohn HY, Jarrett N, eds. Warrendale, PA: Metallurgical Society, 1987 Feb; :203-223
New process chemistry has been developed for the dechlorination roasting of secondary zinc materials. An experimental study has been undertaken on the use of gaseous ferric chloride [Fe2c16(g)] to enhance the volatilization of impurity chlorides and zinc chloride through the formation of gaseous complexes. The species CdFe2c18(g), PbFe2c18(g), and ZnFeC15(g) have been identified and their thermodynamic properties determined. To provide a baseline for the measurement of vaporization enhancement through vapor complex formation, the vapor pressures of CdC12, PbC12, and ZnC12 were also determined. The thermodynamic data have been used to calculate the degree of visibility enhancement for different processing conditions. The results indicate that significant increases in vapor pressure are possible. An information base has been developed that should provide for further development and commercialization of the processing concept.
Metallurgical-processes; Metallurgy; Waste-treatment; Metals
OP; Conference/Symposia Proceedings
Taylor-PR; Sohn-HY; Jarrett-N
Recycle and secondary recovery of metals: proceedings of the International Symposium on Recycle and Secondary Recovery of Metals and the Fall Extractive and Process Metallurgy Meeting, December 1-4, 1985, Fort Lauderdale, Florida