Excerpt from The Hydrometallurgy of Copper, Vol. 1
The information available on the hydrometallurgy of copper is somewhat fragmentary and widely scattered. The wet methods, for treating copper ores, are diverse; as yet, the industry has not arrived at any established practice, and it is questionable, on account of the widely different character of the ores, if at any time one routine practice will succeed in eliminating other processes entirely. In the discussion of the various methods it is intended to cover all the most essential phases of the subject.
Roasting, both oxidizing and chloridizing, has been given a prominent place in the book, because on many ores, especially the sulphides, hydrometallurgical processes are directly or indirectly dependent upon this step for successful treatment.
The hydrometallurgy of copper differs from the hydrometallurgy of gold and silver largely on account of the greater percentage of material recovered. For this reason the discussion of the precipitation plays an important part. The commercial success of any particular process will frequently depend on the nature of the precipitant and the cost of precipitation.
The book is the result of notes, covering a long period of time, from various sources and from my own experimental work. It is intended, in the text, to give full credit for the various sources of information.
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