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"
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_...
1. Purchase your materials. Purchase gold ore from a local mineral shop. Calcium hydroxide is also known as slaked lime, and can be found at gardening stores in 5- or 10-pound bags
http://www.ehow.com/how_8512794_melt-gold-ore.html
One of the most popular ways of separating gold from rock, is. gold panning., and it is a very big tourist attraction in Kalgoorlie WA (Australia). Gold panning usually takes place
http://wiki.answers.com/Q/How_do_you_separate_gold...
1. Grind the ore so that all parts of the ore are open to the HCL mixture. Add your ore to a plastic-tub cement mixer along with 10 pounds of river rock and turn the mixer until the
http://www.ehow.com/how_10075085_leach-gold-ore-ch...
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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 »
Difficulty: Easy
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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.
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