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Using Nickel as a Catalyst in Ammonium Thiosulfate Leaching for Gold In 1887 cyanidation was patented by MacArthur Thiosulfate Leaching for Gold Extraction

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Gold cyanidation also known as the cyanide process or the MacArthurForrest process is a hydrometallurgical technique for extracting gold from lowgrade ore by converting the gold to a watersoluble coordination complex It is the most commonly used leaching process for gold extraction Production of reagents for mineral processing to recover gold copper zinc and silver represents

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The precipitate usually contains silver which is also precipitated and unreacted zinc The precipitate is further refined e g by smelting to remove the zinc and by treating with nitric acid to dissolve the silver The cyanide process was developed 1887 by J S MacArthur and others in Glasgow Scotland

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Gold cyanidation also known as the He is credited with the development of the MacArthur Forrest cyanidation process in 1887 used to extract gold in South Africa

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cyanide leaching or cyanidation by McArthur and Forrester in 1887 2 A basic flowchart for the recovery of gold from its ore is provided in Figure 1 Figure 1 Basic flowchart for gold recovery The major egories of commercially viable recovery processes include the following

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cyanidation John Stewart MacArthur and two brothers Dr William and Dr Robert Forrest first perfected the procedure in 1887 achieving up to 96 pure gold separation by crushing the ore and suspending it in a solution of cyanide APPLICATION Appliion of the cyanidation process involves comminution of the ore using grinding

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Gold cyanidation s wiki Gold cyanidation also known as the cyanide process or the MacArthurForrest process is a metallurgical technique for extracting gold from lowgrade ore by converting the gold to a watersoluble coordination complex It is the most commonly used process for gold extraction Production of reagents for mineral processing to recover gold copper zinc and silver

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A lot can be learned from history what to do what not to do and what to do a little differently We looked to the genius of an older method of refining which virtually disappeared from use due to the introduction of the simple Cyanidation process aka MacArthurForrest process patented 1887

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John Steward MacArthur obtains a British patent in 1887 for the cyanidation process for extracting gold from ore

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John Stewart MacArthur inventor of the MacArthurForrest Process for gold cyanidation in Glasgow Scotland in 1887 John D MacArthur 1897–1978 American philanthropist John H McArthur born 1935 Dean Harvard Business School

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In 1887 John Stewart MacArthur working in collaboration with brothers Dr Robert and Dr William Forrest for the Tennant Company in Glasgow Scotland developed the MacArthurForrest Process for the extraction of gold ores By suspending the crushed ore in a cyanide solution a separation of up to 96 percent pure gold was achieved

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Gold cyanidation also known as the cyanide process or the MacArthurForrest Process is a metallurgical technique for extracting gold from lowgrade ore by converting the gold to water soluble aurocyanide metallic complex ions It is the most commonly used process for gold extraction Due to the highly poisonous nature of cyanide the process is highly controversial

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Gold cyanidation also known as the In 1887 John Stewart MacArthur working in collaboration with brothers Dr Robert and Dr William Forrest for the Tennant

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Using Nickel as a Catalyst in Ammonium Thiosulfate Leaching for Gold Extraction Harunobu Arima1 In 1887 cyanidation was patented by MacArthur and the Forrester brothers and further developed to the practical use Using Nickel as a Catalyst in Ammonium Thiosulfate Leaching for Gold Extraction 517

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John Stewart MacArthur s wiki John Stewart MacArthur was a chemist from Glasgow He is credited with the development of the MacArthurForrest cyanidation process in 1887 used to extract gold in South Africa His patent for the process was voided MacArthur died in 1920

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Gold cyanidation also known as the cyanide process or the MacArthurForrest Process is a metallurgical technique for extracting gold from lowgrade ore by converting the gold to water soluble aurocyanide metallic complex ions It is the most commonly used process for gold extraction Due to the highly poisonous nature of cyanide the process is highly controversial

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John Seward MacArthur inventor of the MacArthurForrest Process for gold cyanidation in Glasgow Scotland in 1887 John D MacArthur 1897–1978 American philanthropist John H McArthur born 1935 Dean Harvard Business School

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