Unlike the Wohlwill process, the Fizzer cell can treat anodes containing up to 10 percent silver, and up to 20 percent silver if an imposed alternating current is added. The surface of the anode may need to be scraped free of silver chloride at regular intervals. Aqua Regia Process. The Aqua Regia process can produce gold of up to 99.99 percent .Get Latest Price
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