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Metal recovery is the final step in a hydrometallurgical process, in which metals suitable for sale as raw materials are produced. Sometimes, however, further refining is needed to produce ultra-high purity metals. The main types of metal recovery processes are electrolysis, gaseous reduction, and precipitation.
The Ravensthorpe Nickel Mine is a nickel mine and hydrometallurgical processing plant located at Bandalup Hill, 35 km (22 mi) east of Ravensthorpe, Western Australia. Built by BHP Billiton, it was closed in January 2009, after less than a year of operation due to a collapse in the price of nickel.
The Long Harbour Nickel Processing Plant was built on a partially brownfield site near the port of Long Harbour. The facility consists of a wharf for offloading nickel ore concentrate from bulk carriers, crushing and grinding facilities, a main processing plant approximately 2 km (1.2 mi) south of the port, a pipeline to supply process water ...
In November 2008 Newfoundland Minister of Natural Resources Kathy Dunderdale announced that construction should start in 2009 to build a $2.2B hydrometallurgical processing plant in Long Harbour on Newfoundland's south coast.
In 2007, Sherritt acquired a 40% interest in the Ambatovy Joint Venture to develop and build a vertically-integrated nickel and cobalt mining, processing, refining and marketing operation in Madagascar. The Joint Venture reached commercial production in 2014 and comprises (i) a mine and an ore preparation plant located in the immediate vicinity ...
Hydrometallurgical processes include high-pressure acid leach (HPAL) and heap leach, both of which are generally followed by solvent extraction – electrowinning for recovery of nickel. Another hydrometallurgical routes is the Caron process , which consists of roasting followed by ammonia leaching and precipitation as nickel carbonate.
On Monday, the food processing company announced that it would close its Emporia, Kansas facility in February 2025. Over 800 employees of the plant were notified about the closure in a letter.
Solvent extraction and electrowinning (SX/EW) is a two-stage hydrometallurgical process that first extracts and upgrades copper ions from low-grade leach solutions into a solvent containing a chemical that selectively reacts with and binds the copper in the solvent.