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    zhengzhou , henan

  • Industrial Leading Industrial:

    Mining Machinery

  • Factory Top Most Factory:

    in china

Gold Powder Making Machine 504 Free

Mar 08, 2015 Cleaning Powder gold of nitric acid. Powder gold boiled with clean water for 10-15 minutes, temperatures 70-90 0 C Pour the water out. This is dry gold dregs. When the water dries out, slowly pour the gold powder into a crucible (or the AR process to be more gold purity 99%) Given some heat to gold power but use low heater.

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