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"
1. Grind your ore down to a rough powder. Wash the piece thoroughly. Break your piece down using stone tools if necessary. This is the first step in refining, grinding it down so
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Gold is formed independently from rocks so unlike iron or copper there is no 'ore' to extract it from. In general gold is acquired by finding nuggets in rocks. The gold is simply
http://wiki.answers.com/Q/How_do_you_extract_gold_...
Chemically. Source(s) http://www.ehow.com/how-does_5393434_gol….
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There are two main types of reactions used for extracting copper form its ore. In one reaction, copper oxides reduced by carbon to produce carbon dioxide and pure copper. In the second
http://wiki.answers.com/Q/What_reactions_extract_t...
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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
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 ...
Copper ore refers to any mineral from which copper is extracted. Examples of copper ores include native copper, malachite, Cu, chalcocite, chalcopyrite, azurite, ...
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, ...
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