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sulfide ore copper mining

Jul 09, 2019 · 1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite. In addition to copper minerals, iron sulfide can be recovered, and the main mineral of sulfur is pyrite.

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  • SulfideOre Copper Mining in Minnesotas Boundary Waters

    SulfideOre Copper Mining in Minnesotas Boundary Waters

    Sulfide-Ore Copper mines, which are what Twin Metals intends to propose, are notoriously destructive to environments. As the mining activities progress and material is extracted, the likelihood of Acid Mine Drainage (AMD) increases. AMD is produced when mine tailings (mine waste) are exposed to water and oxygen, becoming very environmentally toxic.

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  • Clean water or mining pollution for the nations favorite

    Clean water or mining pollution for the nations favorite

    The aggressive push by the Trump administration to force approval of a sulfide-ore copper and nickel mine in northern Minnesota’s Superior National Forest will almost certainly pollute the ...

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  • SulfideOre Copper Mining Boundary Waters ...  SCOUTER Forum

    SulfideOre Copper Mining Boundary Waters ... SCOUTER Forum

    Jan 17, 2018 · In every direction, interconnected waterways laced the forest, and when considering sulfide-ore mining, the issue of water is central. When exposed to air and water, sulfide ore in which copper and other minerals occur creates sulfuric acid and generates heavy metals and other pollutants.

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  • Copper Mining and Processing: Processing of Copper Ores

    Copper Mining and Processing: Processing of Copper Ores

    B. Processing of Sulfide Ore. Following mining, transporting, and crushing to a consistent gravel or golf ball-size, the crushed ore is further processed at a mill using secondary crushers, and reduced to pebbles, and finally to fine sand. After the copper ore is crushed, liquid is added to make it a slurry.

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  • Mining threatens Minnesotas pristine Boundary Waters

    Mining threatens Minnesotas pristine Boundary Waters

    Jan 20, 2018 · Boundary Waters foliage.jpg. The sulfide-ore mining process used to extract copper and nickel pollutes waters with acid, arsenic, mercury and lead. Minnesota Gov. Mark Dayton also declared lands adjacent to the Boundary Waters unavailable for mining.

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  • Sulfide Mining  Minnesota Trout Unlimited

    Sulfide Mining Minnesota Trout Unlimited

    Sulfide-Ore Copper Mining and the Risks. • Copper, mercury and other metals in AMD are toxic to fish and the insects they eat over the short and long term. • Sulfates increase the rate of mercury methylation in aquatic environments, leading to more frequent and more serious fish consumption advisories for high mercury content.

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  • Trump officials cut back review of Boundary Waters mining

    Trump officials cut back review of Boundary Waters mining

    Forest Service scales back environmental study of mining near BWCA. Environmentalists, however, were aghast at the idea of greenlighting more sulfide-ore mining in the watershed of a federally protected wilderness without a detailed scientific review.

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  • The great sulfide mining divide: You cant save the BWCA

    The great sulfide mining divide: You cant save the BWCA

    Sulfide-ore mining is dangerous everywhere and most dangerous in wet environments. And the Boundary Waters is nothing if not wet. ... The waste from PolyMet’s copper-nickel sulfide mine would ...

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  • Acid mine drainage  Wikipedia

    Acid mine drainage Wikipedia

    The most commonly mined ore of copper, chalcopyrite, is itself a copper-iron-sulfide and occurs with a range of other sulfides. Thus, copper mines are often major culprits of acid mine drainage. At some mines, acidic drainage is detected within 2–5 years after mining begins, whereas at other mines, it is not detected for several decades.

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  • Boundary Waters Business Coalition

    Boundary Waters Business Coalition

    Boundary Waters Business Coalition Boundary Waters Canoe Area Wilderness, Minnesota . About Us. Local, state, regional and national businesses support permanent protection for the Boundary Waters Canoe Area Wilderness from risky sulfide-ore copper mining proposed on …

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  • THE SCIENCE: October 2017

    THE SCIENCE: October 2017

    the sulfide-ore copper mine sites and in the Superior National Forest. o Pollution from sulfide-ore copper mines in these areas would extend into the Boundary Waters Canoe Area Wilderness. • Scenario three (a spill at the proposed concentration plant) could devastate adjoining lakes, rivers and streams in the Superior National Forest.

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  • Save the Boundary Waters  Home | Facebook

    Save the Boundary Waters Home | Facebook

    Last week, Boundary Waters Champion Betty McCollum challenged Agriculture Secretary Sonny Perdue to explain why he cancelled a critical study about the impact of sulfide-ore copper mining near the Boundary Waters, eliciting the editorial below from the Minneapolis StarTribune.

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  • Veterans for the Boundary Waters

    Veterans for the Boundary Waters

    sulfide-ore copper mining proposed on the edge of the Wilderness. Veterans for the Boundary Waters works to protect this Wilderness so future generations of veterans can enjoy the public lands they fought to …

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  • Sulfide Mining  Minnesota Trout Unlimited

    Sulfide Mining Minnesota Trout Unlimited

    • Copper, mercury and other metals in AMD are toxic to fish and the insects they eat over the short and long term. • Sulfates increase the rate of mercury methylation in aquatic environments, leading to more frequent and more serious fish consumption advisories for high mercury content.

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  • The Threat of Sulfide Mining  Friends of the Boundary

    The Threat of Sulfide Mining Friends of the Boundary

    Sulfide mining, the process of extracting copper, nickel and other metals from sulfide ores, has been deemed the most toxic industry in the country by the EPA. When the sulfide ore comes in contact with oxygen or water, it creates sulfuric acid.

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  • Treatment of Mixed Sulfide Oxide Ores of Copper

    Treatment of Mixed Sulfide Oxide Ores of Copper

    There is no possibility of mining the sulfides and the oxides selectively. At the New Cornelia mine, however, the oxide and sulfide ores are sharply separated, perhaps by an ancient water level, so that the oxide ore may be mined and treated in a plant built for that purpose, and the underlying sulfide ore may be left for treatment in another ...

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  • Copper Mining and Extraction: Oxide Ores

    Copper Mining and Extraction: Oxide Ores

    The process used to treat sulfide copper ores begins at the mine site, where the copper-bearing minerals are physically separated from the rest of the rock. The flow diagram below shows how the percentage of copper increases as the ore is refined, first physically by froth flotation, then chemically by smelting and finally electrolytic refining.

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  • Veterans for the Boundary Waters

    Veterans for the Boundary Waters

    sulfide-ore copper mining proposed on the edge of the Wilderness. Veterans for the Boundary Waters works to protect this Wilderness so future generations of veterans can enjoy the public lands they fought to …

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  • Copper Ore Types: Sulfides versus Oxides

    Copper Ore Types: Sulfides versus Oxides

    Apr 23, 2011 · Copper Ore Types: Sulfides versus Oxides. Both ore types can be economically mined, however, the most common source of copper ore is the sulfide ore mineral chalcopyrite, which accounts for about 50 percent of copper production. Sulfide copper ores are the most profitable ores because they have high copper content,...

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  • Sulfide Mining Overview  Save Our Sky Blue Waters

    Sulfide Mining Overview Save Our Sky Blue Waters

    in electric cars). 7 Sulfide mining is remarkable in its mineral to waste ratio. The USGS reported that the average yield of copper mining was between 0.47 and 0.60 percent 8 and that production of copper 9 reached a high of just under 1.6 million tons (based on data from 1970-1990). 10 This

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  • THE SCIENCE: October 2017

    THE SCIENCE: October 2017

    sulfate levels in these waters are around 6 mg/L, elevated sulfate levels associated with sulfide-ore copper mining would likely impair wild rice production. It may also harm other rooted aquatic plants. • Sulfates are a factor in the creation of methyl mercury, which …

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  • Lawsuit Aims to Prevent Mining Pollution near Boundary

    Lawsuit Aims to Prevent Mining Pollution near Boundary

    Jun 25, 2018 · Lawsuit Aims to Prevent Mining Pollution near Boundary Waters Wilderness in Minnesota. The Forest Service is conducting a comprehensive study of the risks of proposed sulfide-ore copper mining on public lands in the watershed of the Boundary Waters.

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  • Mining threatens Minnesotas pristine Boundary Waters

    Mining threatens Minnesotas pristine Boundary Waters

    Jan 20, 2018 · The sulfide-ore mining process used to extract copper and nickel pollutes waters with acid, arsenic, mercury and lead.

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  • From Ore to Finished Product

    From Ore to Finished Product

    Copper - From Beginning to End. Copper is a major metal and an essential element used by man. It is found in ore deposits around the world. It is also the oldest metal known to man and was first discovered and used about 10,000 years ago. And as alloyed in bronze (copper-tin alloy) about 3000 BC, was the first engineering material known to man.

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  • The Worlds 20 Largest Copper Mines

    The Worlds 20 Largest Copper Mines

    Radomiro Tomic copper mine, located in the Atacama Desert of northern Chile, is the eighth-largest copper mine in the world. The open-pit mine contains an estimated 12 million metric tons of fine copper. Construction work for the Radomiro Tomic Copper Sulphide Mine Phase I was completed in June 2010 with an investment of $370 million.

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  • Sulfideore copper mining has never been done without

    Sulfideore copper mining has never been done without

    Mar 21, 2017 · Sulfide-ore copper mining has never been done without polluting. Never. If new technology is developed that can prevent pollution, the BWCA watershed is …

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  • Sulfide mining record  WaterLegacy

    Sulfide mining record WaterLegacy

    There is ample reason to be skeptical about mining companies and promoting agencies promises that sulfide mining can be done without polluting the water. One can merely search the internet for "Acid Mine Drainage", and find numerous examples all over the world of …

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  • Sulfideore copper mining has never been done without

    Sulfideore copper mining has never been done without

    Mar 21, 2017 · Sulfide-ore copper mining has never been done without polluting. Never. If new technology is developed that can prevent pollution, the BWCA watershed is …

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  • Toxic Mine Waste. The Dangers of Copper Sulfide Mining

    Toxic Mine Waste. The Dangers of Copper Sulfide Mining

    Jul 31, 2019 · The acid mine drainage into the Rio Tinto river estuary from the copper mine tailings has resulted in total and permanent poisoning of the downstream area for over a century, even before open pit mining with giant earth-moving equipment made it feasible to mine low-grade copper sulfide ore.

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