how do they extract gold

extracting gold from rock openlearn open university

so how do you use mercury to extract the gold from gold bearing rock when you mix the finely powdered gold bearing rock with some mercury the gold within the rock dissolves to form what's called a gold amalgam. the next step in the process is to separate the gold

how do you extract gold from mines answers

if the mines do not have the equipment to refine their gold then they will be forced to sell the gold at a discount as the gold is not a finished product. how do you extract gold from tooth you

3 ways to melt gold wikihow

may 07 2019018332they also allow people to mix metals together (such as gold silver copper aluminum and so on) and melt them at home. to use them you will need the same equipment including a crucible and flux. if the gold item also contains small percentages of silver copper or

how is gold mined gold traders (uk) ltd

each of these categories has it's own unique methods of extracting the gold from the surrounding materials. in placer mining the gold is retrieved by metal detecting panning cradling sluicing and dredging. using gravity and water to separate the dense gold from the other materials that surround it

how much gold can you refine from a bunch of old computer

mar 01 2016018332how much gold can you refine from a bunch of old computer parts cody was about to get about a third of a gram of gold ish metal out of

how cyanide leaching is used in gold raregoldnuggets

jul 03 2015018332there have been several methods developed by miners to extract gold particles from ore over the last hundred or so years. of those methods the cyanide leaching process (cyanidation) is the method that is commonly used the most often to do this. as the name implies the main component in the process is a sodium

how gold gets out of the ground etf

may 18 2009018332instead they look in the earth for relatively high concentrations of gold which can be mined and refined into pure bullion. after all of the processing of the ore and extraction of gold the

how to scrap old computers gold amp silver recovery youtube

mar 07 2012018332quot gold fingersquot and cpu's are the best type of scrap for a beginner to learn the craft of gold recovery. i have made this short list for us citizens who wants to sell scrap electronics. you can

researchers fishing pure gold from seawater lodi

may 16 2016018332young researchers at the university of heidelberg and the german cancer research center came to a smart idea on how to extract the gold from seawater. in order to precipitate the gold from the solution they use the skills of specially adapted bacteria. the microbe is called delftia acidovorans which grows only on gold mines.

how are diamonds mined and extracted from the ground

diamond pipe mining. instead they are transported to special plants where the ore is processed and the rough diamonds are extracted. depending on how rich the ore is a few hundred tons of ore might be sieved just to produce a single carat of gem quality rough diamonds.

prospecting and mining gold howstuffworks

lode deposits are concentrations of gold found in solid rock. if the gold bearing rock is located at the earth's surface the mining company will use open pit techniques. first miners drill a pattern of holes which they then fill with explosives. next they detonate the explosives to break up the ground so it can be loaded into haul trucks.

sullivan generator extracting gold from sea water

jun 21 2015018332if you could extract gold to get just 2.5 ounces you would also get 7.3 ounces of lead and 7.3 ounces gallium (nifty element melts in your hand) 36.5

how to extract gold from computer circuit boards

the amount of gold you will get from 4 tons of circuit boards may not be worth the effort and cost. there are at least two ways to get the gold (1) cut off the tabs and strip them in cyanide (2) burn the entire collection smelt the copper and gold out of the ash then extract the gold from the copper.

how to recover gold from computer scrap with

sep 13 2015018332computer 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.

do they use chemicals to extract the gold from the

aug 06 2019018332the gold they extract is recovered using a sifting process. screening plants wash and vibrate the fine gold pieces down through small holes in steel plates where it washes and settles into carpet like material that collects the heavy gold. the car