How Is Gold Extracted from Ores?

Answer

Gold is extracted by first getting the gold ore from the mines. Then separating the impurities from the real gold and this is usually done using cyanide. The gold ore is placed into a tank that contains a weak cyanide solution, zinc is added and a chemical reaction which separates the gold from the ore. Pure gold is removed from the solution with a filter press.
Q&A Related to "How Is Gold Extracted from Ores"
They dig it or use some simple machine to dig it out.
http://wiki.answers.com/Q/How_was_gold_extracted_f...
1. Mix the chromite ore sample with sodium chloride-NaCl-solution so that mixture contains 5 percent of NaCl by weight. The salt acts as a strong chlorination agent that is essential
http://www.ehow.com/how_12160413_extract-pgms-chro...
1. Place granulated gold alloy in a beaker. Add nitric acid. Stir the contents and allow the alloy to react with the nitric acid. The nitric acid will dissolve the common metals used
http://www.ehow.com/how_8583735_extract-alloy-usin...
thais live in china Iron ores consists of oxygen and iron atoms bonded together into molecules. To convert it to metallic iron it must be smelted or sent through a direct reduction
http://wiki.answers.com/Q/What+type+of+chemist+ext...
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Ask.com Answer for: how is gold extracted from ores
How Is Gold Extracted From Gold Ore?
Gold is usually found alone or alloyed with mercury or silver, but can also be found in ores such as calaverite, sylvanite, nagyagite, petzite and krennerite. Most gold ore now comes from either open pit or underground mines. The ores sometimes... More »
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Gold is extracted from ores through the use of cyanide. Ore is put into a tank containing a weak cyanide solution and zinc is added and the chemical reaction separates the gold from the ore. Another method of extraction is the carbon-in-pulp method whereby the ore is mixed with water before cyanide is added. Carbon is then added to bond with the gold and the carbon-gold particles are put into a caustic carbon solution, separating out the gold.
Explore this Topic
An ore is a type of rock that contains minerals, including metal. These are often extracted through mining. Example of ores include argentite, hematite, gold, ...
The metals are extracted from their ores by first melting the ore. Next, the metal will be separated using chemical processes. For more information, visit: < ...
Zinc is extracted from its ore by calcination to remove the sulphur converting zinc to an oxide. The next step is to smelt the particular oxide with carbon where ...
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