how is sulfuric acid a by product of copper mining

Rio Tinto Kennecott - Rio Tinto

Kennecott's operations include the Bingham Canyon Mine, Copperton Concentrator, Garfield Smelter, refinery, power plant and associated facilities. The metals and minerals Kennecott produces are essential for modern life. Kennecott produces copper, molybdenum, gold, silver and sulphuric acid to be shipped around the...


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silver processing | Britannica.com

It is also the least noble of the precious metals, reacting readily with many common reagents such as nitric acid and sulfuric acid. Metallic ... Silver is generally found in the combined state in nature, usually in copper or lead mineralization, and by 2000 bce mining and smelting of silver-bearing lead ores was under way.

How mining generates toxic waste | Codelco…

When exposed to air they form sulphates, when sulphates contact with water they dissolve into the water as sulfuric acid. The acid ... geological report of the Junin copper deposit ; Basic Concepts of Environmental Geochemistry of Sulfide Mine-Waste


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ITP Mining: Energy and Environmental Profile of the U.S.… pdf

essentially a co-product of zinc mining or a byproduct of copper and/or gold and silver mining. Complex ores are ... Due to low zinc content, run-of-mine zinc-bearing ores must be concentrated before smelting and refining. ..... In electrolytic zinc processing, calcine is digested with sulfuric acid to form a zinc sulfate solution...


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Sulfur 2013 - USGS Mineral Resources Program pdf

as elemental sulfur and byproduct sulfuric acid has come from recovered .... Byproduct sulfuric acid production increased by 5% compared with that of 2012 (tables 1, 4). Three acid plants operated in conjunction with copper smelters, and two were byproduct .... sector, the mining of sulfur or pyrites is the sole objective; this.


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Copper Mining and Processing: Processing of…

Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday ... The resulting "pregnant" leach solution of sulfuric acid and copper sulfate is collected in a small pool.


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Acid mine drainage chemistry - Classroom of the…

This includes the mining of coal, copper, gold, silver, zinc, lead, and uranium. The mineral pyrite, more commonly known as "fool's gold," is iron disulfide (FeS2). Pyrite is one of the most important sulfides found in the waste rock of mines. When exposed to water and oxygen, it can react to form sulfuric acid (H2SO4).


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Mining Arizona | The Arizona Experience - landscapes,…

Arizona is the second-largest producer of molybdenum, which is extracted as a byproduct of copper in the Sierrita, Mission, Mineral Park, and Bagdad mines. ... Ore is exposed to acid in a heap leach to liberate the copper ions. Sulfuric acid is commonly used to extract copper; cyanide solution is often used for gold.


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risks from sulfide-ore copper mining - Save the Boundary… pdf

Sulfide-ore copper mining, a risky type of mining that has never been permitted in Minnesota, has been proposed within the Boundary Waters watershed by Twin Metals Minnesota, owned by Chilean mining company. Antofagasta. Byproducts of sulfide-ore copper mining include hazardous pollutants such as sulfuric acid...


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Pyrite: The Real Story Behind "Fool's Gold" - Thermo Fisher…

1 Apr 2014 ... In addition to pyrite, common sulfides are chalcopyrite (copper iron sulfide), pentlandite (nickel iron sulfide), and galena (lead sulfide). The sulfide ... Pyrite was once a source of sulfur and sulfuric acid, but today most sulfur is obtained as a byproduct of natural gas and crude oil processing. Today pyrite is...


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Copper mines and chemistry | News | Chemistry…

27 Sep 2006 ... Cationic exchange reagents have been used by metallurgists to generate copper from ore for over 15 years. The process uses sulfuric acid to make copper sulfate, which is purified by a solvent extraction process before electrolysis produces pure copper. Products from each of these steps can feed the...


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By-products recovery via integrated copper operations… pdf

12 Nov 2015 ... Rio Tinto is a leading global business delivering value at each stage of mineral and metal production. • We employ approximately 60,000 people in more than 40 countries. • We fulfil vital consumer needs that help improve living standards. • Our commitment to safety is fundamental to the way we do...


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Acid | Konkola Copper Mines Plc

Sulfuric acid is one of the most critical by products used to make hundreds of compounds needed by almost every industry. The largest amount of sulfuric acid is used to make phosphoric acid, which in turn is used to make the phosphate fertilizers, calcium dihydrogenphosphate and the ammonium phosphates. KCM's new...

TENORM: Copper Mining and Production Wastes | Radiation…

If pyrites and sulfides are exposed to the air and water, they may form sulfuric acid that will mobilize many metals including uranium, which is highly soluble in acid. This chemical reaction produces acid mine drainage (AMD), a pollutant that is present at many abandoned mine...


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What is acid rock drainage - MiningFacts.org

Acid rock drainage (ARD) or acid mine drainage refers to the acidic water which is created when sulphide minerals are exposed to air and water and, through a natural chemical reaction, produce sulphuric acid.


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Mine Engineer.Com provides mining, gold,…

First the copper ore from a open pit mine is blasted, loaded and transported to the primary crushers. Then the ore is crushed and screened, with the fine sulfide ore (~-0.5 mm) going to froth flotation cells for recovery of copper. The coarser ore goes to the heap leach, where the copper is subjected to a dilute sulfuric acid...


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Copper extraction - Wikipedia

Some supergene sulfide deposits can be leached using a bacterial oxidation heap leach process to oxidize the sulfides to sulfuric acid, which also allows for simultaneous leaching with sulfuric acid to produce a copper sulfate solution. As with oxide ores, solvent extraction and electrowinning technologies are used to...


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Sulfuric Acid - Rio Tinto Kennecott pdf

Sulfuric acid plays some part in the production of nearly all manufactured goods. A byproduct of the smelting process, Kennecott Utah Copper produces about ... Mine. KUC produces copper, molybdenum, gold, silver and sulfuric acid, and ships those products around the world to meet customers' needs. Sustainable...


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Copper Production: How Is Copper Made? - The…

2 Mar 2017 ... Immersed in a tank of copper sulfate and sulphuric acid, along with a pure copper cathode starter sheet, the blister copper becomes the anode in a galvanic cell. Stainless steel cathode blanks are also used at some refineries, such as Rio Tinto's Kennecott Copper Mine in Utah. As a current is introduced,...


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Ore minerals - Mineralogical Society of America

Cadmium - Unlike many other commodities cadmium is produced as a byproduct of zinc (sphalerite) mining. Cesium ... Copper - Most copper ore bodies are mined from minerals created by weathering of the primary copper ore mineral chalcopyrite. Minerals ... Sulfuric acid is produced from the flue gases of metal smelters.


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Mining With Microbes | October 15, 2012 Issue - Vol. 90…

15 Oct 2012 ... "If you get copper in solution, it's easy to get it out," Dold says. "You have to make the bacteria happy so they can do their job as fast as possible." In practice, that means kick-starting protein-catalyzed redox reactions by adding sulfuric acid to bioreactors or waste pools to reduce pH to comfortable levels for...


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Innovations: Introduction to Copper: Mining…

The techniques for extraction of copper from oxidized ores are quite different from those employed for the sulfide ores. The oxidized ores, consisting of the silicates, carbonates and sulfates, are treated by several methods, all involving some form of leaching of the crushed ore with sulfuric acid to produce impure solutions of...


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How copper is made - material, used, processing, steps,…

The first mention of the systematic extraction of copper ore comes from about 3800 B.C. when an Egyptian reference describes mining operations on the Sinai Peninsula. In about 3000 B.C. ... and refine copper. These include sulfuric acid, oxygen, iron, silica, and various organic compounds, depending on the process used.


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Environmental Aspects of Copper Production - Princeton… pdf

sive method of smelter SO2 control. Sulfuric acid is used in solution mining, and also is the most common form in which other industries consume sulfur; thus it can be a salable byproduct rather than a waste. However, non-leaching markets for sulfuric acid generally are a long way from the smelters in the United States, and...


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MAR CAMINO | NIPPON MARINE CO.., LTD.

The ship's most distinctive feature, found in no other ship in the world, is its ability to transport both copper concentrate and sulfuric acid in one vessel. First, copper concentrate of 30% purity produced from the copper mines of Chile is stowed in the ships' hold and then shipped principally to the Pan Pacific Copper (PPC)...


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Copper mining. From ore to copper. - School…

underground, sinking a vertical shaft into the Earth to an appropriate depth and driving horizontal tunnels into the ore. 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. The ore is treated with dilute sulphuric acid. This trickles slowly through...


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Acid Mine Drainage - Ground Truth Trekking

5 May 2010 ... Acid mine drainage is a worldwide problem, leading to ecological destruction in watersheds and the contamination of human water sources by sulfuric acid and heavy metals, including arsenic, copper, and lead. Once acid-generating rock is crushed and exposed to oxygen and the surface environment,...


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Metals in Medicine and the Environment - Faculty…

5 Aug 2009 ... This type of mining produces many harmful products such as sulfuric acid and sulfur dioxide along the way. Recent advances in the ... The way in which copper has been traditionally mined has resulted in the production of toxic waste products and negative changes to the immediate mine environment.


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Chemicals Used in Mining - Hesperian Health Guides -…

Sulfuric acid is a toxic chemical used in copper mining. It is also a byproduct of many kinds of mining, mixing with water and heavy metals to form acid mine drainage. Sulfuric acid smells like rotten eggs. Contact with sulfuric acid can cause burns, blindness, and death.


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EARTHWORKS | Acid Mine Drainage

At metal mines, the target ore (like gold, silver, copper, etc) is often rich in sulfide minerals. When the mining process exposes the sulfides to water and air, together they react to form sulfuric acid. This acid can dissolve other harmful metals and metalloids (like arsenic) from the surrounding rock. Acid mine drainage can be...


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Copper sulfide - an overview | ScienceDirect…

In practice, there will be overlap between the two leaching processes. Ultimately, copper leaching results in sulfuric acid and the conversion of insoluble copper sulfide into readily soluble blue copper sulfate. Millions of tons of mining waste containing small, but valuable amounts of copper are brought to collection points for...


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Copper mining. From ore to copper. - School…

Leaching. The ore is treated with dilute sulphuric acid. This trickles slowly through the ore dissolving copper to form copper sulphate. The copper is recovered by electrolytic refining. Advantages of this process are: much less energy is use than in traditional mining; no waste gases are given off; it can be used on ores with as...


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Up-gradation of MoO3 and separation of copper, iron, zinc…

Product 90 - 95 ... Molybdenum is mined as a principal ore and is also recovered as a byproduct of copper and tungsten mining (Guptha, 2000). ... The first review concluded that, among all the metallurgical processes for spent catalysts, a process consisting of roasting and sulphuric acid leaching seems to be the best option...


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The Life Cycle of Copper, its Co-Products and By-Products… pdf

24 Jan 2002 ... Mining, Minerals and. Sustainable Development is a project of the International ... R. U. Ayres et al The life cycle of copper, its co-products and byproducts ii. CHAPTER 1. INTRODUCTION . ...... water, cost of electric power, markets for sulfuric acid, etc.)3 In short, it is not possible to do a formal LCA for a...


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Hydromet Technology - Vale.com

The concentrate will be processed in a pressurized vessel where it will react with oxygen and sulphuric acid to produce an impure solution of nickel, cobalt and copper. This solution will pass through a number of chemical purification steps ending with removal of impurities and separation of nickel, copper and cobalt.


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Keep Sulfuric Acid Out of Minnesota's Waters

This mining — called "sulfide mining" — would bring sulfuric acid contamination to Minnesota's watersheds. In "sulfide mining," heavy metals like copper and nickel are bonded to sulfur. When exposed to air and moisture this byproduct generates sulfuric acid, causing "acid mine drainage." Sulfide mining has already...

MMG Limited | Extraction and Processing

Conventional mining methods are used to remove waste material and extract ore at the Kinsevere open pit mine. Most areas can be mined without blasting ... The leaching process uses a sulphuric acid solution to extract copper from its solid copper oxide form into a solution referred to as PLS. After separating the copper...


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Heap Leaching Mining Techniques, Metals Mining,…

The method is akin to the cyanide technique, above, except sulfuric acid is utilized to dissolve copper from its ores. The acid is recycled from the solvent withdrawal circuit and is used again on the leach pad. A byproduct is iron (II) sulfate, jarosite, which is manufactured as a byproduct of leaching pyrite, and at times even the...


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Zijin Copper Co - Sulphuric Acid on the…

News, February 2, 2012 - ZIJIN Mining Group Co said it has suspended the production of a copper smelting plant in southeastern Fujian Province after a gas ... it will be capable of producing 90,000 tons of high-purity copper cathodes, 10,000 tons of standard copper cathodes, 730,000 tons of sulfuric acid, and byproducts of...


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Copper Mining and Extraction Sulfide Ores

This KS3 education resource looks at copper mining, extraction and pyroprocessing of sulfide ores. ... They can all be melted down and made into new products. Even the few grams of copper in your mobile .... The blister copper anodes are immersed in an electrolyte containing copper sulfate and sulfuric acid. Pure copper...


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