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In metallurgy, non-ferrous metals are metals or alloys that do not contain iron (allotropes of iron, ferrite, and so on) in appreciable amounts.. Generally more costly than ferrous metals, non-ferrous metals are used because of desirable properties such as low weight (e.g. aluminium), higher conductivity (e.g. copper), [1] non-magnetic properties or resistance to corrosion (e.g. zinc). [2]
Non-ferrous extractive metallurgy is one of the two branches of extractive metallurgy which pertains to the processes of reducing valuable, non-iron metals from ores or raw material. [1][2][3] Metals like zinc, copper, lead, aluminium as well as rare and noble metals are of particular interest in this field, [4] while the more common metal ...
Example of a copper alloy object: a Neo-Sumerian "Foundation Nail" of Gudea, circa 2100 BC, made in the lost-wax cast method, overall: 17.5 x 4.5 x 7.3 cm, probably from modern-day Iraq, now in the Cleveland Museum of Art (Cleveland, Ohio, USA) Copper alloys are metal alloys that have copper as their principal component.
in consolidated basis [1] China Nonferrous Metal Mining (Group) Co., Ltd. (abb. CNMC, Chinese: 中国有色矿业集团公司) is a Chinese corporation involved with the mining of non-ferrous mineral resources. [2] Established in 1983, it is a large central enterprise managed by the State-owned Assets Supervision and Administration Commission ...
Tongling Nonferrous Metals Group Holding Company Limited is a state-owned enterprise involving in extracting copper resources and smelting copper and other non-ferrous metals. It was founded in 1949 in Tongling, Anhui, China and it was put into production in 1952. It is one of the largest copper smelting companies in the country. [ 3][ 4][ 5][ 6]
Electrowinning, also called electroextraction, is the electrodeposition of metals from their ores that have been put in solution via a process commonly referred to as leaching. Electrorefining uses a similar process to remove impurities from a metal. Both processes use electroplating on a large scale and are important techniques for the ...
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