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how is gold extracted fromvits ore

  • Gold processing Britannica.com

    With ores of higher gold content (i.e., greater than 20 grams of gold per ton of ore), cyanidation is accomplished by vat leaching, which involves holding a slurry of ore and solvent for several hours in large tanks equipped with agitators. For extracting gold from low-grade ores, heap leaching is practiced.

  • How Gold Is Extracted From Its Ore? YouTube

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    Dec 12, 2017· Green gold extraction method replaces cyanide with starch. Extracting gold from ore is a poisonous business. The most common method is cyanide leaching, wher...

    Author: Etta Hahne Tipz
  • How is gold extracted from its ore? Quora

    EXCLUDING mechanical, smelting, and amalgamation processes, the methods of extracting gold from its ores may conveniently be grouped together under the heading of wet or chemical methods. In these, the gold is dissolved by some suitable solvent, a...

  • Extracting Gold HowStuffWorks

    Extracting Gold Prev NEXT A gold bar is stamped with a serial number at a U.S. refinery in 2001. The bar, which weighed about 40 pounds (18 kilograms), was one of nine gold bars poured that day.

  • Gold extraction Wikipedia

    Gold extraction refers to the processes required to extract gold from its ores. This may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore. Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold

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