By J. E. Dutrizac, J. A.. Gonzalez, D. M. Henke, S. C. James, A. H. J. Siegmund
ISBN-10: 0873394860
ISBN-13: 9780873394864
Read or Download Lead-Zinc 2000: Proceedings of the Lead-Zinc 2000 Symposium Which Was Part of the Tms Fall Extraction & Process Metallurgy Meeting, Pittsburgh, U.S.A., October 22-25 PDF
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Additional info for Lead-Zinc 2000: Proceedings of the Lead-Zinc 2000 Symposium Which Was Part of the Tms Fall Extraction & Process Metallurgy Meeting, Pittsburgh, U.S.A., October 22-25
Example text
Primary cells, which mainly have neutral and alkaline electrolytes, are particularly widely used. The most common zinc batteries are the Leclanche dry cell (zinc/carbon), the so-called alkaline batteries and the zinc-air battery. Typically Leclanche and alkaline batteries contain from 4 to 6 grams of zinc for AA cells to 20-25 grams for D cells which are commonly used in flashlights. The usefulness of these batteries is illustrated by the fact that 22 billion Leclanche cells and 11 billion alkaline batteries are produced every year.
It was realised that, without a legislative framework and left to purely commercial considerations, lead recycling would take place only if it were economically viable. This was evident in the mid-1980s when recycling rates slumped during a period of low prices (just below $650/t or 30c/lb in $1999 terms). In those countries where there are well-organised scrap battery recycling schemes, and some of the cost of collecting this lead scrap is effectively passed onto the consumer or battery manufacturer, it may well be that this has had an impact on lowering costs and maintaining the viability of lead recycling.
A long-range plan setting philosophies, priorities, policies and processes has been developed. Programs are the heart of the market development plan and funding is directed to support selected programs. The approach put in place requires that: • • • Programs are focussed on end-use markets Actions are directed towards specifiers Programs are developed and implemented in partnership with first-use zinc consumers. To develop and oversee market development programs, the committee (Figure 4) is organized into World Committees for Continuous Galvanizing, General Galvanizing and DieCasting.