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    The principle and equipment for gold electrolysis. Gold electrolysis was invented by Emil Wholwill in 1874. But various versions of this process have been developed over the years. It is an electrochemical process which has been applied in many large-scale gold-refining establishments or industries.

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    This is a purely electrolytic system, requiring a separate rectifier (available from Shor) and works only with silver that is at least 90% pure before refining (Sterling silver is 92+% pure). Produces standard electrolytic grade silver of 99.95-99.99% purity. Uses a dilute nitric acid for electrolyte, so some ventilation is required.

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    Dec 11, 2020· The global Electrolytic Refining Equipment market size is expected to gain market growth in the forecast period of 2020 to 2025, with a CAGR of

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    The high temperature and high-pressure desorption method is to install the gold-loaded carbon in a pressure vessel, and mix the solution with 0.4% to 1% NaOH and 0.1% NaCN, heat temperature to 130 to 160 ° C, under the pressure of 3.6 to 5.9 kg/cm2. Within 2 to 6 hours, the gold and silver desorption rates of gold-loaded carbon exceeded 90%.

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    May 14, 2015· Wanting to build an electrolytic gold scrap refining machine. as high as 30%+. That is rather significant when at today's gold price a 1% yield delta amounts to $.06 per lb of low grade material such as scrap. I too am looking in to equipment to separate Gold for scrapping computers. I found a company on the web that has a machine

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    Electrolytic Refining Mining Fundamentals. This process is known as the Wohlwill process The Miller chlorination process is an economical refining process that separates gold of about 995 purity which can then be electrorefined to improve purity to 99999 Silver The electrolytic silver refining process includes a crude silver anode and a refined silver cathode

  • Wohlwill electrolytic refining process for gold

    Mar 06, 2008· 1999. Q. Dear Sir, I am helping a patron of mine do research on the electrolytic refining process of gold (primarily) and silver (secondly). We are having trouble finding resources that explain the process fully, but I have ordered Hummel's Wohlwill electrolytic gold, platinum, and palladium refining.

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    Electrolytic gold and silver refining facilities were installed and many new concepts were introduced, including large-scale refining (up to 500 kg per furnace), induction furnaces, mechanical handling and modern analytical techniques. At the same time, the old Witwatersrand Co-operative Smelting Works

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