Evaluation of electrogalvanizeed deposits from zinc wastes.
Srinivasan-V; O'Keefe-TJ; Cole-ER; Miller0VR; Winand-R
Zinc '85: proceedings of International Symposium on Extractive Metallurgy of Zinc, October 14-16, 1985, Tokyo, Japan. Tozawa K, Kogyokai N, eds. Tokyo: Mining and Metallurgical Institute of Japan, 1985 Oct; :749-762
A current problem facing the metals industry is the disposition of many of the residues and wastes generated during processing. The material is often toxic and disposal is an economic burden that yields little or no return on investment. Examples of these wastes would include electric arc or brass furnace dusts generated in the steel and copper industries. Recently there has been a renewed interest in the use of electrogalvanizing for improved corrosion resistance, particularly for automotive applications. Conceptually it seemed feasible to recycle the waste residues directly into products that could be used in electrogalvanizing, rather than trying to integrate the dusts into an existing circuit producing zinc metal from ore. Preliminary testing of various electrolytes made from waste materials was performed using a range of processing conditions. Primary processing variables included acid concentration, steel substrate pre-conditioning, and electrolytic cell type. For comparison, deposits were also made from solutions prepared using French process zinc oxide. The morphology of the coatings was examined using scanning electron microscopy techniques.
OP; Conference/Symposia Proceedings
OP 147-86; Contract-H0256001
Zinc '85: proceedings of International Symposium on Extractive Metallurgy of Zinc, October 14-16, 1985, Tokyo, Japan