how is gold extracted from the rock

How Is Quartz Extracted? | Sciencing

Apr 25, 2017· Quartz is extracted from open pit mines. Miners only use explosives on rare occasions when they need to expose a deep seam of quartz. The reason for this is that although quartz is known for its hardness, it damages easily if it is suddenly exposed to a …Chat Online

Extracting iron and copper

Iron and aluminium are extracted from their ores in various ways. ... Unreactive. metals. such as gold are found in the Earth's crust. as ... An ore is a rock that contains enough of a metal or a ...Chat Online

Extracting copper. Extracting copper.

Extraction: An ore has to be changed chemically into the metal. This process is called reduction. How this is done, and how much it costs, depends upon the metal's reactivity (see reactivity properties). In general, the more reactive the metal, the harder it is to extract it from its ore.Chat Online

Mica | Minerals Education Coalition

Hardrock mining of micabearing ore requires drilling and blasting. After blasting, the ore is reduced in size with drop balls and loaded on the trucks with shovels for transport to the processing plant, where mica, quartz and feldspar are extracted. Uses. The principal use of ground mica is in gypsum wallboard joint compound, where it acts as ...Chat Online

copper extraction and purification

Extracting copper from other ores. Copper can be extracted from nonsulphide ores by a different process involving three separate stages: Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulphuric acid to produce a very dilute copper(II) sulphate solution.Chat Online

How Is Garnet Mined Processed? | Our Pastimes

Miners extract garnets in a number of ways. In open pit mining, workers remove the soil from an area, and then chip the rock out of the ground by hand or with machinery. This method can damage agricultural areas, so miners developed another method in which they dig vertical shafts into the ground, supported by timbers.Chat Online

How is coal mined and extracted? | Planète Énergies

Closeup. Underground and Surface Mines . Coal was the fuel that stoked the Industrial Revolution in the 19 th century. Extracting coal from underground or openpit mines continues to be a vital part of the world economy today.Chat Online

Copper Mining and Extraction Sulfide Ores

Metals are often found as compounds in ores. An ore is a rock or mineral that has enough metal in it to make it worth extracting. Mining copper About 200 years ago the UK was an important world source of copper and tin and there were mines in Cornwall and Devon.Chat Online

how to separate gold ore from rock

Hard Rock Mining Gold and Silver Ore and processing it. The main problem for individuals or small groups interested in hard rock gold deposits is the high capital costs both for the mining equipment to dig and remove the rock as well as the equipment to crush and process hard rock ore in order to extract the gold from its solid rock enclosure.Chat Online

machinery for extracting gold from rock

machine hand machine to extract gold from rock hand machine to extract gold from rock thesolarpower. Cornstarch Replaces Cyanide In Gold Extraction , Cornstarch Replaces Cyanide In Clean New Gold Extraction Method Scientists accidentally discover a new way to isolate gold that is , gold is difficult to extract, .Chat Online

Extracting gold from rock OpenLearn Open University

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 per ton of rock…Chat Online

How do you extract gold from ore

At one time, mercury WAS used to extract gold from gold ore. The rock was crushed, and washed over a copper sheet coated with mercury. Gold forms an amalgam with mercury, and some of the gold ...Chat Online

Gold Extraction Methods | Australian Gold, History ...

Gold Extraction Methods. Alluvial gold is extracted using a rocker and cradle or simple sluice and various panning techniques. Reef gold is imbedded in quartz rock, which has to be crushed to release the gold caught in the seams. Ore Treatment.Chat Online

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

The resultant silver chloride was then picked up by adding mercury. This inefficient method was superseded by the von Patera process. In this process, ore was heated with rock salt, producing silver chloride, which was leached out with sodium hyposulfite. Today, there are several processes used to extract silver from ores.Chat Online

Extraction Of Iron SlideShare

May 22, 2009· 1. Extraction of Iron Designed By: 2. As History Tells Us Stone Age and Bronze Age: Humans have used metals for thousands of years. Gold and silver, found as native metal, were used as jewellery. These metals were known in the Stone Age but gold and silver are too soft to be used as tools.Chat Online

Extracting Gold | HowStuffWorks

Removing the goldbearing 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 ...Chat Online

High School Earth Science/Mining and Using Minerals ...

Jan 08, 2019· The gold that attracted wouldbe miners from around the world weathered out of a hard rock, travelled downstream and then settled in a deposit of alluvium. The gold originated in the metamorphic belt in the western Sierra Nevada, which also contains deposits of copper, lead zinc, silver, chromite and other valuable minerals.Chat Online

How Is Aluminum Extracted From Its Ore? |

Aluminum is extracted from bauxite ore by way of the Bayer process. This requires a great deal of electricity; consequently, a large amount of aluminum is processed in Iceland, which gets its electricity through geothermal energy. To extract aluminum, the bauxite ore is first crushed, then mixed with lime, hot water and soda ash.Chat Online

How do we get oil and gas out of the ground?

Oil and gas can move through the porous rocks (rocks with gaps between the grains). The oil and gas move upwards from the source rock where they were formed. When they met a layer of cap rock (a rock with no spaces between the grains) the oil and gas are trapped. A well is drilled so that the crude oil and other liquids travel up the bore hole.Chat Online

Gemstone Extraction Techniques from Ore | Gemstone Buzz

Gemstone Extraction Techniques from Ore. Extraction of Rough Gemstones from the Ores. ... In the case of Diamond extraction from the mother rock, the process is more complicated. The entire process however utilises the properties of diamonds to separate them. Following are the basic processes by which diamonds are recovered from the ore.Chat Online

How Are Metals Extracted From Their Ores? |

How Are Metals Extracted From Their Ores? Metal extraction from ores occurs in many different ways involving physical, chemical and electrical means. Even ores of the same metal sometimes require different methods of separation depending on the concentration of …Chat Online

Why is gold so easy to extract

At one time, mercury WAS used to extract gold from gold ore. The rock was crushed, and washed over a copper sheet coated with mercury. Gold forms an amalgam with mercury, and some of the gold ...Chat Online

gold mining process from rock to gold

Extracting gold from rock OpenLearn Open University. Unlike alluvial gold, which is found as very small flakes on river banks, goldbearing rocks have to be dug out of the ground. We want pure gold, but goldbearing rocks include lots of other materials such as quartz, calcite and the sulfides of other metals.Chat Online

How is gold mined? GoldTraders (UK) Ltd

Hard rock mining is the process of using open pit or underground mining tunnels to retrieve the gold from the rock. This method of gold mining is responsible for recovering most of the worlds gold supply. Byproduct mining is related to hard rock mining in that open pit or underground mining tunnels are used.Chat Online

'Green' gold extraction method replaces cyanide with ...

May 20, 2013· Extracting gold from ore is a poisonous business. The most common method is cyanide leaching, where cyanide salts in solution are used to suck the gold out from its ore. You get gold…Chat Online

How to Extract Silver |

Nov 22, 2016· Extract Silver Step. Buy or build an electrolysis machine. This machine will help you to extract silver from your waste chemicals. You can find electrolysis machines in science supply stores, or you can make your own using a 12volt charger and a rubber tub.Chat Online

How to extract gold from Rock Quora

Feb 10, 2019· Method for extracting gold from gold ore: First, a single flotation method Single flotation is suitable for the treatment of coarse and medium grain natural gold ore. The crushed ore enters the ball mill and will be finely ground into a flotation....Chat Online

hard rock gold extraction process

hard rock gold extraction process siculocks. hard rock gold mining process lokswasthyasewaorg. History Empire Mine Park Association hard rock gold mining process,The Empire Mine was the richest hardrock mine in the State of California producing 58 million . Chat Now Hard Rock Gold Extraction Process gaytripackagingcoin. Read moreChat Online

Gold extraction Wikipedia

Gold extraction refers to the processes required to extract gold from its may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore.. Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of ...Chat Online

How Gold Gets Out Of The Ground |

May 18, 2009· After all of the processing of the ore and extraction of gold, the companies are left with a lot of leftovers the tailings: ground rock and processing byproducts that contain a lot of nasty ...Chat Online

How are metals with different reactivities extracted ...

Unreactive metals such as gold are found in the Earth's crust as uncombined elements. However, most metals are found combined with other elements to form compounds. An ore is a rock that contains ...Chat Online

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 carboninpulp.Chat Online

Is there gold in the ocean? NOAA's National Ocean Service

Jun 25, 2018· Ocean waters do hold gold, but it's difficult to say exactly how much. If you were hoping make your fortune mining the sea, consider this: Gold in the ocean is so dilute that its concentration is very small. One study found there is only about one gram of gold for every 100 million metric tons of ocean water in the Atlantic and north Pacific.Chat Online

How to easily recover gold from scrap computer chips YouTube

Dec 29, 2013· Part 1: In this video I'm recovering gold from computer Memory Chips (RAM). Use this process to get gold from scrap computer parts. DO NOT DO THIS AT HOME. B...Chat Online

Uranium: How is it Mined? New Mexico Institute of Mining ...

Uranium resources can be extracted from the ground in three ways: open pit, underground, and insitu leach (ISL). Open Pit Mining Open pit mining, also known as strip mining, is the removal of surficial soils and uneconomic rock to get at the ore below.Chat Online

Gold Recovery Correctly: 12 Steps

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 "Cupellation"*. These processes are DANGEROUS and put the user at t...Chat Online

How to extract Gold, Platinum, Rhodium from "Black Sand ...

May 08, 2008· I have access to a large amount of "Black Sand' ore concentrate, which has assays showing extremely large concentrations of Gold, Platinum and Rhodium. But many people say it is worthless because it is "impossible" to extract the precious metals from the junk (especially Iron). Can the precious metals be extracted at all?Chat Online

Extracting Gold from Rock PBS

Unlike alluvial gold, which is found as very small flakes on riverbanks, goldbearing rocks have to be dug out of the ground. We're after pure gold, but rock that contains gold also includes lots ...Chat Online

How to Extract Gold From Quartz | Sciencing

Apr 24, 2017· How to Extract Gold From Quartz ... Place your cloth over your rock specimens to prevent lose debris from scattering. Place the smaller pieces into the mortar; pound the rocks with the pestle until you break up the rocks into grains. Your samples need to be crushed into pieces small enough to run through the sieve. As you proceed, pick out the ...Chat Online

Mining Flashcards | Quizlet

Subsurface mining removes coal and various metal ores that are too deep to be extracted by surface mining. It does not disturb the land as much as surface mining, produces less waste material, but leaves much of the resource in the ground and is more dangerous and expensive.Chat Online