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Rand Refinery (Pty) Limited is the world's largest integrated single-site precious metals refining and smelting complex. It was established in 1920 to refine gold within South Africa , which had previously been refined in London .
The resulting gold is 99.999% pure, and of higher purity than gold produced by the other common refining method, the Miller process, which produces gold of 99.5% purity. [1] [2] [3] For industrial gold production the Wohlwill process is necessary for highest purity gold applications.
The resulting gold is 99.5% pure, but of lower purity than gold produced by the other common refining method, the Wohlwill process, which produces gold of up to 99.999% purity. [1] [2] The Wohlwill process is commonly used for producing high-purity gold, such as in electronics work, where exacting standards of purity are required.
Gold processing and refining in Rufunsa District, Lusaka Province. [99] It is a joint venture between Karma Mining and Mineral Development Company Limited (55%) of Sudan and ZCCM Investments Holdings (ZCCM-IH) (45%) signed in 2020. [99] [100] The plant was set up at a cost of about US$3.5 million. [101]
Gold occurs principally as a native metal, i.e., gold itself.Sometimes it is alloyed to a greater or lesser extent with silver, which is called electrum.Native gold can occur as sizeable nuggets, as fine grains or flakes in alluvial deposits, or as grains or microscopic particles (known as colour) embedded in rock minerals.
Kundan Group was established in 1971 and is headquartered in New Delhi, India.The company has a multi-business portfolio inclusive of gold refinery, cosmetics, chemicals, polymers, agro-commodities, precious metals, petroleum products, energy, and the import of bullion and pharmaceutical items.
The group’s Hong Kong refinery opened in 1982, and Metalor began running its US refinery in 1986. In 1998, SBC merged with Union Bank of Switzerland (UBS) and a majority of the shares of Métaux Précieux SA Metalor were acquired from SBC by a group of Swiss private investors comprising Ernst Thomke, Martin Bisang, Rolf Soiron and Giorgio Behr.
Pallion designs, manufactures, and distributes precious metal products and related services. It is the largest precious metal services group in Australasia. [1] [2] Pallion is the result of the merger in 2014 [3] [4] of the ABC Bullion and Palloys Group of companies founded in 1972 and 1951 respectively.
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