Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 73
on has for its object The separation of the cop])er in a the separation of all the substances state of purity is, of course, the object capable of being volatilized by heat. of all the operations just enumerated. This is eflected by exposing the ore, in As a simple chemical question, it can be a… … Y'--. ". section in Figs. 8 and 9. The furnace which the crude ore is subjected to its action. Tliey are divided from each consists of a fireplace a, for the pro- other by the bridge c, which is so con- duction of the heat, and of a sole h-, on
Workshop recipes · Technology · Industrial arts
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