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Shenzhen Zhongjin Lingnan Nonfemet Co., Ltd. known as Zhongjin Lingnan in China or their English name Nonfemet (abbreviation of non-ferrous metal), is a Chinese company engaged in the mining and processing of lead, zinc and other non-ferrous metals. [3] In 2015 financial year, the company also had 0.49% revenue from real estate development. [2]
The metal ore is either distilled in an electrolyte or acid solution, then magnetically deposited onto a cathode plate (electrowinning); or smelted then melted using an electric arc or plasma arc furnace (electrothermic reactor). [7] Another major difference in non-ferrous extraction is the greater emphasis on minimizing metal losses in slag.
The holding company retained Hunan Yaogangxian Mining Co., Ltd., Hunan Huangshaping Mining Branch and a joint venture (Duddar mine).) However, in 2014 China Minmetals announced the plan to privatization of the listed company, which China Minmetals already took control of the holding company "Hunan Nonferrous Metals Holding Group Co., Ltd." in 2011.
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]
The Deziwa mine is a large open-pit copper and cobalt mine located about 35 km east of Kolwezi in Lualaba Province in the Democratic Republic of the Congo. [1] The mine is estimated to hold 4.6 million tonnes of copper and 420,000 tonnes of cobalt.
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It searches for non-ferrous metals including: aluminium, copper, zinc, lead, gold, nickel, etc. for administration of Mines and Minerals (Development and Regulation) Act, 1957 (MMDR Act) in respect of all mines and minerals other than coal and lignite. There is one attached office, one subordinate office, three public sector undertakings (PSUs ...