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The company designed a processing line to include shredders and downstream separation equipment. At this time, Metech also discontinued receiving precious-metals-containing hazardous waste and scaled back its other local precious metals refining businesses that were not adding value to the company's focus on integrated electronics recycling.
Remains of an abandoned piping system used for uranium in-situ leaching in StráΕΎ pod Ralskem, Czech Republic. In-situ leaching (ISL), also called in-situ recovery (ISR) or solution mining, is a mining process used to recover minerals such as copper and uranium through boreholes drilled into a deposit, in situ.
Its maximum output of 120,000 tons per year was approximately half of the entire U.S. copper output from recycled copper. The company website described Chemetco as one of the world's largest copper refiners and reported an estimated revenue in 1999 of $500 m. [1] It was listed in 2000 as the 23rd-largest privately held company in the United States.
A part of the spent electrolyte enters the cobalt recovery circuit and is purified by the removal of iron, copper, nickel, and zinc prior to the precipitation of cobalt as its hydroxide. This is accomplished by the addition of more lime to raise the pH until the remaining copper precipitates. This copper is sent back to the copper circuit.
Copper is precipitated as its sulfide as a means to purify nickel leachates. Cementation is the conversion of the metal ion to the metal by a redox reaction. A typical application involves addition of scrap iron to a solution of copper ions. Iron dissolves and copper metal is deposited. Solvent Extraction; Ion exchange; Gas reduction.
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The economic recovery led to the foundation of the ‘Elbhütten Affinerie- und Handelsgesellschaft’ in 1856, which merged the Elbkupferwerk with the Beit Gold and Silver Parting company. Delivery and smelting of copper and silver ores were processed in Steinwerder; the Elbstrasse site oversaw the processing by ‘affination’ in smelters ...
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