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A rapid leaching method for gold ore

     

A rapid leaching method for gold ore is employed, which involves breaking and grinding the gold ore to increase its surface area. The ore is then mixed with bromide salts, iron salts, and acid to form a leaching solution. Under ambient temperature and pressure conditions, this mixture is agitated for 10 to 20 minutes at a speed of 100 to 800 rpm. After agitation, the mixture is filtered to separate the residue from the leachate. The residue is washed, and the conventional method is used to recover gold from the filtered leachate.

This method allows for rapid gold extraction within a short time frame, typically achieving a leaching rate of over 90%. The process operates under normal temperature and pressure conditions, making it a straightforward production technique. It offers several advantages, including high efficiency, wide applicability to difficult-to-process ores such as high-sulfur, high-arsenic, and carbonaceous gold ores, and minimal environmental impact due to the absence of sulfur dioxide and oxidized arsenic emissions. Additionally, the reagents used are non-toxic.

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