extracting gold from ore facts yahoo answers

Limiting and excess reagents? | Yahoo Answers

Nov 20, 2016· Gold can be extracted from ore containing gold(III) sulfide by passing hydrogen gas through the ore: Au2S3(s) + 13 H2(g) → 3 H2S(g) + 12 Au(s) (a) Identify the limiting and excess reagents if 5 mol gold(III) sulfide is combined with 13 mol hydrogen (b) Based on the chemical equation, which reagent should be the limiting reagent in order for this process to be most profitable?

Gold Processing Methods & Gold Ore Extraction

Of all the methods of extracting gold & 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 Tests that mirror each of these unit operations were utilized to evaluate the principal flowsheets This page offers a comparative review of gold recovery .

Gold Extraction From Ore Process - bialy-towarzysznl

The effect of pH value on gold extraction for various ore types is shown in Figure 284Greatly increasing pH value has a beneficial effect on gold extraction for both oxide and sulfide ores and stabilizes ∼pH 95–100, whereas for some carbonaceous ores, pH value has no ,

How would chemical reactivity affect the extraction and ,

Mar 16, 2008· They are usually extracted from or Electrolysis of sea water is also another method of extracting the very reactive alkali metals but that's quite an expensive process Metals that are chemically reactive may have many uses because of the many compounds that they form but for things such as electrical wiring the less reactive metals are .

What mass (g) of Zn is needed to react , - Yahoo Answers

Mar 10, 2011· 1 Determine moles of Zn that will react with 011 mole Au(CN)2- Note: 1 mole Zn reacts with 2 moles Au(CN)2- (from the balanced chemical reaction)

Mobile Units To Extract Gold From Ore

Mineral gold ball mill images srimathatrustco mineral ball mill to extract gold for sale midway park resort small ball mill for sale the information and facts of gold within the ore is incredibly minimal, as being a method to extract the gold, you require to crush and grind ore and adopt mineral processing method for pre enrichment

Gold extraction - Wikipedia

Gold extraction refers to the processes required to extract gold from its orThis 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 .

How can ores be formed? | Yahoo Answers

Jun 20, 2011· a large portion of modern mining is done by extracting micron or atomic size particles of gold from the surrounding strata Earth's most important iron ore deposits are found in sedimentary rocks They formed from chemical reactions that combined iron and oxygen in marine and fresh waters

Inca One Gold Prepares to Capitalize , - financeyahoo

May 20, 2020· Vancouver, British Columbia--(Newsfile Corp - May 20, 2020) - INCA ONE GOLD CORP (TSXV: IO) (FSE: SU9F) (SSEV: IOCL) ("Inca One" or the ,

Advantages Of Recycling Aluminium - TheWorldCounts

There are many advantages of recycling aluminium Since it takes more energy to dig up and produce aluminium than any other metal, recycling not only avoids resources to be extracted from Earth, it also saves energy - lots of energy!

Why copper is not extracted by smelting? | Yahoo Answers

Oct 25, 2016· Phytomining is a method of concentrating the copper metal because it absorbs in the roots of the plants This is a very low cost method of concentration, with low energy use, when compared to smelting huge amounts of low-grade ore

Turning old jewelry into pure gold bars - YouTube

May 29, 2019· A few months ago, one of my patrons sent me a bunch of old gold jewelry for me to refine I originally thought that it was going to just be some gold ,

Bacterial Leaching: Extracting Gold from it's ore? | Yahoo ,

Apr 13, 2008· The higher oxidation state iron is then reactive enough to strip gold away from its ore Gold is oxidized in this process and dissolves into solution, where it can be extracted easily: Au(3+) -->Au(5+) There are other mechanisms, this one being the most widely used Traditional methods used to extract gold from ore (chemical methods):

why mercury is stored in iron bottle? | Yahoo Answers

Jan 30, 2011· mercury disolves with gold, zinc & other metals to form amalgams but mercury does not react (disolve etc) with iron thats the main reason mercury is stored in iron containers this comes in handy for storage & transporting amalgams have uses in dentistry & is used to extract gold from ore,

how is copper extracted from it's ore? | Yahoo Answers

May 11, 2006· Copper can be extracted from its ore by: 1 Traditional mining (a) underground - sinking a vertical shaft into the Earth to an appropriate depth and driving horizontal tunnels into the ore (b) open pit - 90% of ore is mined by this method Ores near the surface can be quarried after removal of the surface layers 2 Leaching

What is the crystal structure of gold? | Yahoo Answers

Mar 12, 2010· Today, more often than not, gold is extracted from or These ores often contain relatively little gold Some of these processes cause environmental concern The ore is crushed to a powder so as to expose the small gold particl These are dissolved by treatment of the rock with cyanide solution in air The result of this is a gold cyanide .

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 min The ores sometimes contain as little as 5/100 of an ounce of gold ,

Extraction of Gold by Electrolysishow? | Yahoo Answers

Oct 12, 2007· The material that you want to separate the gold from is the cathode, a piece of the pure metal, would be the anode A 1/10 ounce, or less piece of gold would do very well since it can be beaten very thin, to be the anode A Gold Chloride, or other gold based electrolyte would be ,

Are metals a natural or man made substance? | Yahoo Answers

Jul 11, 2007· As was stated in other answers, they are both naturally occurring and man-made Many elements are technically a metal but none occur in nature in ready-to-use condition The most common metal, steel, is an alloy consisting mostly of Iron and Carbon The iron is reduced from iron ore which was mined from the ground Copper is a very pure metal

Where is gold found on Earth? | Yahoo Answers

May 04, 2008· Gold is an ingredient, so it became into formed on the initiating of the universe, purely like all different components Gold reaches the exterior of the Earth by cracks in bedrock, the place superheated water incorporates dissolved gold because of the fact the water cools down, the gold precipitates out of answer and types veins interior the rocks

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 piec At a mill, large machines known as crushers reduce the ore to pieces no larger than road gravel

How much does it cost to extract iron from , - Yahoo Answers

Nov 06, 2013· Smelting iron is a very large scale operation and the cost is quite low, a few dollars a ton (I heard $4 a ton a few years back) The product is called "pig iron" and it has to be alloyed and tempered in various ways before it is most useful

What Are The Advantages Of Extracting New Metals By Mining ,

disadvantages of iron extraction - Coal Crusher what are the advantages of extracting new metals by mining , » sadip ductile iron pipes price list » disadvantages and advantages of iron ore mining .

How do we get silver? | Yahoo Answers

Apr 20, 2010· As the others have stated, it's extracted from mines generally from LEAD MINES The main mineral in lead mines in called Galena (Lead Sulphide - PbS) A smaller proportion of silver is produced from other types of mines - copper mines, gold mines as ,

Extracting Gold Ore

how to extract gold from its ore? | Yahoo Answers Nov 01, 2008 Best Answer: The cheapest way is cyanide leaching A basic (pH) solution of cyanide is dripped over a pile of gold ore The solution dissolves the gold out

the separation of gold from its ore balanced equation 」

Extraction Process of Aluminium from Bauxite Ore The separation of the alumina from the impurities in the bauxite ore is usually accomplished by the Bayer Process In this process the ground bauxite is leached with caustic soda NaOH to produce soluble sodium aluminate NaAlO2, leaving the impurities in the insoluble residue

why are different metals extracted in , - Yahoo Answers UK

Jul 18, 2011· Each metal is surrounded by different compounds in the ore If you are trying to get a specific metal out and the characteristics of the other compounds in the ore are close to the one you are trying to get out ( for instance getting aluminum from the ore bauxite you have to contend with the silicates and other minerals that may separate with the aluminum so they have to mix the bauxite in a .

process on extract gold from iron ore | Solution for ore ,

The process of extracting and refining gold from ore is , gold, and iron ore Gold extraction – Wikipedia, the free encyclopedia , and pyrometallurgical processes to be performed on the ore , most important way of extracting the native , be used to dissolve iron from the ,

extraction of gold from ore that contain copper

US5139752A Method for extraction of gold and silver from Numerous methods have been proposed to date for extraction of gold and silver into a solution from an ore containing gold and silver Among these conventional methods the cyanide method excels in operational efficiency and economy and has found the most extensive utility

ways to extract gold flakes from panned sand

How To Extract Gold Dust From Sand Using Heat Extracting Gold From Sand Solution For Ore Mining May 06 2013 how to extract gold dust from sand yahoo answers best answer there are a few methods for removing fine gold from other sands panning is obviously the most common method using golds specific gravity to

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