Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 77
Arsenic Lead Silica the separation of all the substances The separation of tke copper in a capable of being volatilized by heat. state of purity is, of course, the object This is effected .by exposing the ore, in of all the operations just enumerated. a roughly pulverized condition, to the As a… … F-c. o. which the crude ore is subjected to its section in Figs. 8 and 9. The furnace action. They 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 b, on
Workshop recipes · Technology · Industrial arts
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