how do we extract gold

  • How Are Diamonds Mined And Extracted From the Ground

    In essence, it is basically the same method employed by gold diggers which involves the screening and straining of mud. In the case of artisanal mining, the extraction process usually takes a longer time as it involves low tech equipment and manual labor.

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  • How is platinum extracted from its ore slideshare

    Sep 19, 20140183;32;How is platinum extracted from its ore 1. How is platinum extracted from its Ore? An ore is a naturally occurring mineral from which a pure metal can be extracted. For Platinum, the two chief minerals are sperrylite or platinum arsenide (PtAs2) and co operate or platinum sulfide (Pts).

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  • Gold mining

    Bronze age gold objects are plentiful, especially in Ireland and Spain, and there are several well known possible sources. Romans used hydraulic mining methods, such as hushing and ground sluicing on a large scale to extract gold from extensive alluvial (loose sediment) deposits, such as those at Las Medulas. Mining was under the control of the

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  • Extracting Gold HowStuffWorks

    Removing the gold bearing rock from the ground is just the first step. To isolate pure gold, mining companies use a complex extraction process. The first step in this process is breaking down large chunks of rock into smaller pieces. At a mill, large machines known as crushers reduce the ore to

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  • Can Gold be Extracted from Seawater? (with pictures)

    Sep 25, 20190183;32;Extracting the gold from most anything is not the problem. (Even in the rare forms that do not even appear to be gold because of the molecular structure and its encapsulation) Finding the gold is. You all seem olde, and intelligent. You know you have gold and want to extract

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  • How Is Iron Extracted From the Earth? Reference

    Quick Answer. The use of heavy mining equipment is necessary to dig out large pits in an area with a large deposit of iron ore; however, because iron does not occur naturally, it is necessary to use a blast furnace to separate or refine iron from the other substances in the iron ore.

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  • How to Use Bleach on Gold Ore to Remove Gold Sciencing

    How to Use Bleach on Gold Ore to Remove Gold This was the first commercial method used for gold extraction. Place the ore into the mortar and grind it to the size of sand grains. Put the ore grains into a plastic bowl. We Have More Great Sciencing Articles

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  • Gold Recovery Correctly 12 Steps instructables

    Gold Recovery Correctly I will detail a SAFE process of turning old electronic parts into little round lumps of pure gold. There are many tutorials that claim to offer methods of gold recovery such as quot;Cupellationquot;*. These processes are DANGEROUS and put the user at t

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  • How Gold Is Mined Gold Mining Process World Gold Council

    The lifecycle of a gold mine. People in hard hats working underground is what often comes to mind when thinking about how gold is mined. Yet mining the ore is just one stage in a long and complex gold mining process. Long before any gold can be extracted, significant exploration and development needs to take place, both to determine, as

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  • How to Extract Gold From Electronics 11 Steps (with Pictures)

    How to Extract Gold From Electronics In this Instructable, I will show you how to extract gold from computers using products most people have lying around in their homes. The way I extract the gold is relatively straight forward and pretty easy, but the chemicals used are very danger

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  • How silver is made material, making, history, used

    Silver has been used as a form of currency by more people throughout history than any other metal, even gold. Although it is usually found in ores with less rare metals, such as copper, lead, and zinc, silver To extract silver from copper containing ores, an electrolytic refining process is used. The ore is placed in an electrolytic cell

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  • There Is Gold in Seawater, But We Can't Get at It Atlas

    Mar 23, 20170183;32;There Is Gold in Seawater, But We Can't Get at It Haber and his team discovered the one major flaw that has plagued every honest attempt to extract gold from seawater it

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  • How to Refine Gold (with Pictures) wikiHow

    Jul 19, 20190183;32;How to Refine Gold. You may want to make some extra money by refining your own gold at home, or you may be a jeweler who wants to refine gold in house. There are multiple ways to refine gold on a small scale as long as you take appropriate

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  • How to Refine Gold (with Pictures) wikiHow

    How to Refine Gold. You may want to make some extra money by refining your own gold at home, or you may be a jeweler who wants to refine gold in house. There are multiple ways to refine gold on a small scale as

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  • How Gold Gets Out Of The Ground ETF

    May 18, 20090183;32;Once the ore has been liberated from the ground, the gold will need to be extracted. The processing consists of taking the big pieces of ore and making them smaller, until it reaches the consistency of beach sand. At this point a cyanide solution is added to the mix and milled further into a muddy, watery mix.

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  • How to Use Bleach on Gold Ore to Remove Gold Sciencing

    Allow four hours for the gold to dissolve, stirring every 20 minutes. The chlorine reacts with the gold inside the ore to form gold chloride. Filter the ore and bleach solution to remove all the impurities, such as soil and rock fragments.

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  • Gold Extraction / Mining Goldfo

    Gold mining underground and the extraction of gold A gold bar being cast Even though the precious metal gold only occurs very rarely indeed, it can be found almost everywhere on the planet in the 16 kilometre thick Earths crust.

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  • How gold is made history, used, parts, procedure

    Gold is generally found in two types of deposits lode (vein) or placer deposits; the mining technique used to extract the gold depends upon the type of deposit. Once extracted, the gold is refined with one of four main processes floatation, amalgamation, cyanidation, or carbon in pulp.

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  • How To Use Mercury To Recover Gold

    Sometimes placer gold will be covered with a thin film of oil, which will prevent the gold from being amalgamated unless the oil is cleaned off first. PROCEDURE to Recover Gold with Mercury Bathe the concentrates in a 10 to 1 solution of nitric acid meaning 10 parts of water to 1 part of nitric acid.

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  • How do we extract gold by electrolysis? Quora

    start reading . Electrolytic processes for gold and other precious metals Nutec Electrolytic Refining of Gold

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  • Rock Crushing methods and How to recover gold from Ores

    Hand Crushing and Processing Rich Ores. There is often some very small sized gold there and it can be a lot of work to get all the gold out. We work hard to capture the gold and we don't want to throw the fine gold away as it can be valuable. Here is a discussion of the procedures to crush Quartz or other minerals and extract the gold

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  • Gold Recovery 8 Steps (with Pictures) instructables

    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 and electronics. Some people find it profitable to attempt to extract the gold

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  • How Gold Is Mined Gold Mining Process World Gold Council

    Yet mining the ore is just one stage in a long and complex gold mining process. Long before any gold can be extracted, significant exploration and development needs to take place, both to determine, as accurately as possible, the size of the deposit as well as how to extract and process the ore efficiently, safely and responsibly.

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  • How Is Gold Extracted From Gold Ore? Sciencing

    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 contain as little as 5/100 of an ounce of gold

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  • Gold Mining How Do We Get Gold Out of the Ground Silver

    Extraction, Refining and Uses of Gold. Ore from the gold mine is first crushed in rod or ball mills. This process reduces the ore to a powdery substance. The gold is then extracted by amalgamation with mercury or by placer procedures. Approx. 70% is recovered at this point.

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  • Mercury Usage in Gold Mining and Why It Is a Problem

    Jul 22, 20190183;32;History of Using Mercury in Gold Mining Mercury first was used to extracting gold as many as 3,000 years ago. The process was prominent in the U.S. up until the 1960s, and the environmental impact on northern California is still felt today, according to sciencing .

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  • How to easily recover gold from scrap computer chips YouTube

    Dec 29, 20130183;32;do not do this at home. b Part 1 In this video I'm recovering gold from computer Memory Chips (RAM). Use this process to get gold from scrap computer parts.

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  • Gold mining

    In order to maximize gold extraction, mercury is often used to amalgamate with the metal. The gold is produced by boiling away the mercury from the amalgam. Mercury is effective in extracting very small gold particles, but the process is hazardous due to the toxicity of mercury vapour.

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  • Gold Processing Methods amp; Gold Ore Extraction

    Gold Processing Methods amp; Gold Ore Extraction. Of all the methods of extracting gold amp; processing it from its ore, I used a few to evaluate two principal flowsheets in this case study. The flowsheets utilized operations that involved flotation, cyanidation and gravity concentration.

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  • Can Gold be Extracted from Seawater? (with pictures)

    Sep 25, 20190183;32;Yes, it is possible to extract gold from seawater in theory, but it's really not practical to do so. It is estimated that there is, in total, about eight million tons of gold dissolved in the worlds oceans. While this is a lot, the oceans are huge, and the actual concentration of gold in seawater is only about 0.0000000006%. To put it another way, there is between 0.1 and 2.0 mg per ton, depending on

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  • Gold Recovery 8 Steps (with Pictures) instructables

    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 and electronics. Some people find it profitable to attempt to extract the gold

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  • Extracting gold from rock OpenLearn Open University

    Information on how to extract gold from rock, Extracting gold from rock It theory at least all we needed to do was grind the cinnabar to a fine powder, and heat it gently, whereupon the mercury sulfide readily decomposes, producing mercury vapour (and sulfur).

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  • How to Scrap old Cell Phones for *Gold Recovery YouTube

    Nov 01, 20110183;32;But do not forget to adjust the prices to gold's current value. The report suggests an avarage gold content of 0.034g per cell phone At 2005 0.034g was worth 0.4$

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  • Extracting Gold from Rock PBS

    Mercury We used mercury to actually extract the gold from the powdered rock. Gold, like most minerals, can be 'dissolved' in mercury to create what's called an amalgam. An amalgam is a physical mixture of metals, or a type of alloy.

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  • Extracting Gold from Rock PBS

    We used mercury to actually extract the gold from the powdered rock. Gold, like most minerals, can be 'dissolved' in mercury to create what's called an amalgam.

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  • Gold Recycling amp; Gold Extraction Process Buy Physical

    The Gold Extraction Process. To recover recyclable Gold, professionals use a Gold extraction process to remove the metal from items such as computer mother boards and jewelry settings. The process varies depending on the application, but it typically involves some sort of acidic mixture that separates the Gold from other materials. After

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