Metallurgy copper

In mineral technology, sulfur dioxide and sulfites are used as flotation depressants for sulfide ores. In electrowinning of copper from leach solutions from ores containing iron, sulfur dioxide prereduces ferric to ferrous ions to improve current efficiency and copper cathode quaHty. Sulfur dioxide also initiates precipitation of metallic selenium from selenous acid, a by-product of copper metallurgy (326). 

M. J. Jones, ed., Copper Metallurgy Practice and Theory, Inst. Min. Met., London, 1973. 

The environmental problem of sulfur dioxide emission, as has been pointed out, is very much associated with sulfidic sources of metals, among which a peer example is copper production. In this context, it would be beneficial to describe the past and present approaches to copper smelting. In the past, copper metallurgy was dominated by reverberatory furnaces for smelting sulfidic copper concentrate to matte, followed by the use of Pierce-Smith converters to convert the matte into blister copper. The sulfur dioxide stream from the reverberatory furnaces is continuous but not rich in sulfur dioxide (about 1%) because it contains carbon dioxide and water vapor (products of fuel combustion), nitrogen from the air (used in the combustion of that fuel), and excess air. The gas is quite dilute and unworthy of economical conversion of its sulfur content into sulfuric acid. In the past, the course chosen was to construct stacks to disperse the gas into the atmosphere in order to minimize its adverse effects on the immediate surroundings. However, this is not an en-... 

Muhly, J.D. (1991). The development of copper metallurgy in Late Bronze Age Cyprus. In Bronze Age Trade in the Mediterranean, ed. Gale, N.H., Studies in Mediterranean Archaeology 90, Paul Astrom s Forlag, Jonsered, pp. 180-196. 

Fleming, S.J. and Swann C. P. (1993). Recent applications of PIXE spectrometry in archaeology. 1. Observations on the early development of copper metallurgy in the Old-World. Nuclear Instruments and Methods in Physics Research B 75 440-444. 

Black copper - [METALLURGY - EXTRACTIVE METALLURGY] (Vol 16) - pECYCLING - METALS - NONFERROUS METALS] (Vol 20)... 

Because it is known both that Cyprus had large copper deposits and that copper metallurgy was actively practiced on Cyprus at these times, it has been most often assumed that the Myceneans and Minoans engaged in trade with Cyprus to procure copper. 

B.C. Copper metallurgy is invented and used to fabricate a variety of... 

BJ Moniz, Copper, Metallurgy, American Technical Publishers, 1994. 

K.L. Power Operation of the First Commereial Copper Liquid Ion Exehange and Electrowinning Plant, Copper Metallurgy, ed. R. P. Erlich (New York, NY AIME,... 

Kocialkowski WZ, Komisarek J, Grzebisz W (1991) Methods of heavy metal fractionation in soils polluted by copper metallurgy. Proceedings of symposium Geological aspects of environmental protection, Krakdw 21-23.10.91, AGH Krak6w, 135-139 (in Polish) Komisarek W (1990) Effect of CaC03on the content of various forms of Cu, Zn and Pb in contaminated soils. Wyd Pozn TPN, Nauki Roln, 69 53-62 (in Polish)... 

An early copper metallurgy developed when some craftsmen - who were surely considered to be in contact with the gods - acquired knowledge about what type of earth (containing a copper oxide mineral) should be mixed with charcoal to give the... 

It is difficult to extract copper from an ore of the type described. Typical copper metallurgy was developed by work over many generations. The processing of the ore from the Falun mine has been investigated by a study group L The results can be concluded as follows ... 

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