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Alcoa Corporation is a Pittsburgh-based industrial corporation. It is the world's eighth-largest producer of aluminum. Alcoa conducts operations in 10 countries. Alcoa is a major producer of primary aluminum, fabricated aluminum, and alumina combined, through its active and growing participation in all major aspects of the industry: technology, mining, refining, smelting, fabricating, and recycling.
Asarco LLC is a mining, smelting, and refining company based in Tucson, Arizona, which mines and processes primarily copper. The company has been a subsidiary of Grupo México since 1999.
Falconbridge Limited was a Toronto, Ontario-based natural resources company with operations in 18 countries, involved in the exploration, mining, processing, and marketing of metal and mineral products, including nickel, copper, cobalt, and platinum. It was listed on the TSX and NYSE (FAL), and had revenue of US$6.9 billion in 2005. In August 2006, it was absorbed by Swiss-based mining company Xstrata, which had formerly been a major shareholder.
Codelco is a Chilean state-owned copper mining company. It was formed in 1976 from foreign-owned copper companies that were nationalised in 1971.
United Company RUSAL, international public joint-stock company is the world's second largest aluminium company by primary production output. It was the largest until overtaken by China Hongqiao Group in 2015. UC RUSAL accounts for almost 9% of the world's primary aluminium output and 9% of the world's alumina production.
Zinifex was an Australian company that operated lead and zinc mines, refineries and a lead smelter. It was established in April 2004, when the assets of Pasminco were spun-off. In 2008 it merged with Oxiana to form OZ Minerals.
Petroplus Holdings AG was Europe's largest independent oil refiner by capacity. When the now defunct company was first formed in 1993, it was known as Petroplus International N.V., and was based in the Netherlands. In August 1998, it was listed on the Amsterdam Stock Exchange. In April 2005, it was delisted from the Euronext Amsterdam stock exchange when the company was acquired by a holding company. In November 2006, the company went public on the Swiss Stock Exchange.
Mount Isa Mines Limited ("MIM") operates the Mount Isa copper, lead, zinc and silver mines near Mount Isa, Queensland, Australia as part of the Glencore group of companies. For a brief period in 1980, MIM was Australia's largest company. It has pioneered several significant mining industry innovations, including the Isa Process copper refining technology, the Isasmelt smelting technology, and the IsaMill fine grinding technology, and it also commercialized the Jameson Cell column flotation technology.
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Aluminium smelting is the process of extracting aluminium from its oxide, alumina, generally by the Hall-Héroult process. Alumina is extracted from the ore bauxite by means of the Bayer process at an alumina refinery.
Jiangxi Copper is the largest copper producer in Mainland China. Its operations include copper mining, milling, smelting and refining to produce copper-related products, including pyrite concentrates, sulfuric acid and electrolytic gold and silver. Its chairman is Mr. Li Yuhuang and its headquarters is at Guixi, Jiangxi, China.
Nyrstar is an international producer of critical minerals and metals essential for a low carbon future. It was founded in August 2007 and listed on the Euronext Brussels that October.
Lundin Mining Corporation is a Canadian company that owns and operates mines in Sweden, United States, Chile, Portugal and Brazil that produce base metals such as copper, zinc, and nickel. Headquartered in Toronto, the company was founded by Adolf Lundin and operated by Lukas Lundin. While it was incorporated to pursue an interest in a diamond mine in Brazil, the company re-structured and raised funds to develop the Storliden mine in Sweden. It purchased the Swedish Zinkgruvan Mine from Rio Tinto and then merged with Arcon International Resources for its Galmoy Mine in Ireland and Eurozinc for its Neves-Corvo mine in Portugal. The company subsequently purchased and operated the Eagle mine, Candelaria mine, and Chapada mine.
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Aurubis AG is a global supplier of non-ferrous metals and one of the world's largest copper recyclers. The company processes complex metal concentrates, scrap, organic and inorganic metal-bearing recycling materials and industrial residues into metals. Aurubis produces more than 1 million tons of copper cathodes per year and from these a variety of products such as wire rod, continuous cast shapes, profiles and flat rolled products in copper and copper alloys. Aurubis also produces a range of other metals, including precious metals, selenium, lead, nickel, tin and zinc. The portfolio also includes other products such as sulfuric acid and iron silicate.
Hindustan Copper Ltd. is a central public sector undertaking under the ownership of the Ministry of Mines, Government of India. HCL is the only vertically integrated government-owned-copper producer in India engaged in a wide spectrum of activities ranging from mining, beneficiation, smelting, refining and continuous cast rod manufacturer.
Mopani Copper Mines PLC is a Zambian company owned by ZCCM Investment Holdings.
The Bottom-blown Oxygen Converter or BBOC is a smelting furnace developed by the staff at Britannia Refined Metals Limited (“BRM”), a British subsidiary of MIM Holdings Limited. The furnace is currently marketed by Glencore Technology. It is a sealed, flat-bottomed furnace mounted on a tilting frame that is used in the recovery of precious metals. A key feature is the use of a shrouded lance to inject oxygen through the bottom of the furnace, directly into the precious metals contained in the furnace, to oxidize base metals or other impurities as part of their removal as slag.
The IsaKidd Technology is a copper electrorefining and electrowinning technology that was developed independently by Copper Refineries Proprietary Limited (“CRL”), a Townsville, Queensland subsidiary of MIM Holdings Limited, and at the Falconbridge Limited (“Falconbridge”) now-dismantled Kidd Creek refinery that was at Timmins, Ontario. It is based around the use of reusable cathode starter sheets for copper electrorefining and the automated stripping of the deposited “cathode copper” from them.
References
- ↑ "Aurubis - the largest copper producer in Europe". International Mining. 2009-12-17. Retrieved 2009-03-04.
- ↑ : EN: PDF Summary of the Order of the Commission. OJ C161 of 25 June 2008.
