Abstract
In galvanizing process several byproducts are formed. Among them solid materials composed of different compounds are grown in the galvanizing kettle. The present work examines the structure of the galvanizing ashes, bottom dross and blowing waste with Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-Ray Diffraction (XRD). From this research it was deduced that these byproducts are mainly composed of different zinc compounds, while a large amount of iron in the form of oxides or Fe-Zn intermetallics is also present. In any case, the examined materials are suitable for zinc recovery, although their composition and the structure is highly different in every case.
Keywords
Metals and alloys, Coating materials, X-ray diffraction, SEM, TEM.
Citation
G. VOURLIAS, N. PISTOFIDIS, G. STERGIOUDIS, E. K. POLYCHRONIADIS, An overview on the solid byproducts of the galvanizing kettle, Optoelectronics and Advanced Materials - Rapid Communications, 1, 2, February 2007, pp.77-85 (2007).
Submitted at: Dec. 2, 2006
Accepted at: Jan. 15, 2007