1945

At the beginning of the chapter on lead a short explanation was given on the form in which lead and zinc ores are found, which is generally in mixtures of the two. This chapter will briefly review the development of the separation processes, and it will be shown that the smelting of zinc presents difficulties which have resulted in its concentration being undertaken only in a few countries or regions.

Related Subject(s): Economic and Social Development
/content/books/9789210583541s002-c005
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