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Extracting Gold | HowStuffWorks

When workers add a chemical mixture known as flux to the molten material, the gold separates from the metal used to make the terminals. Workers pour off the flux and then the gold. Molds are used to transform the liquid gold into solid bars called doré bars. These low-purity bars are then sent to refineries all over the world for further processing.

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How do you separate gold from other substances - Finishing

How do you separate gold from other substances. A. 1). One way is by 'panning'; since gold is heavier than most other substances, you can swirl water just fast enough that the gold stays in the pan while the other substances wash out. Or, 2). You can put everything into an acid that dissolves other substances and doesn't dissolve gold. Or, 3).

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gold processing | Britannica. Gold's chemical stability is based on the relative instability of the compounds that it forms . the other metals and then separating them from the molten gold as a dross. . of gold, accounting for about 80 percent of the metal in the Earth's crust.

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How Is Gold Extracted From Gold Ore? | Sciencing

The gold is then removed from the solution with a filter press. For the carbon-in-pulp method, the ground ore is mixed with water before cyanide is added. Then carbon is added to bond with the gold. The carbon-gold particles are put into a caustic carbon solution, separating out the gold.

How to Extract Gold From Scrap | Sciencing

Apr 24, 2017· Gold is a precious, conductive, and pliable metal that retains a stable value better than many commodities. Its chemical properties make it useful for the manufacture of computers parts, electronics, jewelry and dental work. Some people find it profitable to attempt to extract the gold from these scraps, then refine and sell it.

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Clean, cheap method for extracting gold discovered by .

May 15, 2013· Researchers stumble upon a method that could replace toxic cyanide with plain old cornstarch. (For details, see "Selective isolation of gold facilitated by second-sphere coordination with α-cyclodextrin," at Nature Communications .) But the gist of it is that alpha-cyclodextrin, a cyclic starch fragment with six glucose molecules, can be used to selectively recover gold from different …

How To Recover Gold From Computer Scrap with .

Sep 13, 2015· Computer scrap has an undeterminable amount of gold. This enables sellers to charge, and get, from two to ten times what the scrap is worth in terms of the amount of gold that it contains.

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Gold and silver — kidcyber. Open-cut mining is used to get gold, silver and platinum out of the earth. . One way to separate the gold from the crushed rock is to roast it or mix it with bacteria. . in a chemical called cyanide (say: sie-an-ide) The separated gold is washed,.

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