Copper Sulfide Mining A peerreviewed study of the track record of water quality impacts from copper sulfide mines found severe impacts to drinking water aquifers, contamination of farmland, contamination and loss of fish and wildlife and their habitat, and risks to public health.Get Price
The Boundary Waters Canoe Area Wilderness is threatened by sulfideore copper mining. The Campaign to Save the Boundary Waters is leading the effort to ensure permanent protection for the Boundary Waters Wilderness, America39s most visited Wilderness and Minnesota 39s crown jewel, from proposed sulfideore copper mining. TAKE ACTION NOW
Copper Sulfide Mining is NOT Necessarily Good for Jobs or Fishing The acid minepolluted water in the Rio Tinto river has also seriously contaminated the once fertile and now barren fisheries where the river flowed into the Gulf of Cadiz near the Strait of Gibraltar.
The mining of coppernickel sulfide ores is a toxic type of mining that is risky to our environment, our workers and communities, and local economies. Mining sulfide rock releases acid and toxic metals and contaminants that pollute rivers and groundwater for hundreds of years, long after the profits are spent and the products buried in landfills.
Mining. Sulfide mining operations can take several forms depending on the ore body and quality. Mines are either open pit mines or underground operations. Open pit mines are most commonly used, 83 percent of copper mines in the US are open pit.14 This method is used because a greater
Sulfideore copper mining is much more toxic than Minnesotas taconite mining. It produces giant waste piles that, when exposed to air and water, leach sulfuric acid, heavy metals and sulfates. Sulfideore copper mines pollute groundwater, rivers and lakes. In the history of sulfide mining, pollution has never been avoided.
Sulfide mining is the most fateful decision Minnesota will ever make. Do not let anyone make it for you. This attempt is the only viable way to fight copper sulfide mining and the politicians
Sulfide ore mining had been illegal to do on fever although lands for decades at the time due to its environmentally egregious nature. Klobuchar is tis political literally the mother of the
Copper sulfide ores are typically the most profitable types of copper ores to mine. That is because they have high copper content, and the copper in them can more easily be separated from unwanted
Sulfide mining, which is sometimes referred to as hardrock mining, is the process of extracting trace amounts of copper, nickel and other metals from sulfide ores. When sulfide ore comes into contact with water or oxygen, a chemical reaction occurs and produces sulfuric acid, which is the same as battery acid.
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 most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different
All primary sulfide ores of copper sulfides, and most concentrates of secondary copper sulfides being chalcocite, are subjected to vat leach or pressure leach processes exist to solubilise chalcocite concentrates and produce copper cathode from the resulting leachate solution, but this is a minor part of the market.. Carbonate concentrates are a relatively minor product
The smelter for sulfide ores produces sulfur dioxide gas. This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide ores. Scrubbing sulfur dioxide also protects the environment. FeO s SiO2s2 slag This is very similar to the removal of impurities in the blast furnace. The liquid left is a
Sulfide Mining. Mining is the method of tacking materials from the earth to get valuable metal ores like copper, zinc, and lead, which are known as target minerals in mining terms.
The most commonly mined ore of copper, chalcopyrite, is itself a copperironsulfide 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 25 years after mining begins, whereas at other mines, it is not detected for several decades.
Metallic sulfide mining aka hard rock mining is the practice of extracting metals such as nickel, gold and copper from a sulfiderich ore body. Sulfides are a geologic byproduct of mining in this area, and by exposing sulfides to the air and water in our atmosphere, sulfuric acid can be created threatening to poison the nearby water
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 Coppersulfur ore Called copperbearing pyrite. In addition to copper minerals, iron sulfide can be recovered, and the main mineral of sulfur is pyrite.
Although Minnesota has a long history of iron ore mining, sulfide mining for copper, nickel, and precious metals has never been attempted. Prices for some metals, including copper, reached historic highs in 2011, and some companies have sought to mine Minnesota39s lowgrade sulfide ores.
Sulfide mining record 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 34Acid Mine Drainage34, and find numerous examples all over the world of environmentally devastating and costly damage.
Copper Sulfide Mining A peerreviewed study of the track record of water quality impacts from copper sulfide mines found severe impacts to drinking water aquifers, contamination of farmland, contamination and loss of fish and wildlife and their habitat, and risks to public health.