ore mining sulfide

Sulfide mining unfortunately poses several significant environmental risks The most significant one is the threat to water quality When sulfide ores are exposed to air and water the result is sulfuric acid which causes the leaching of potentially toxic heavy metals and the release of sulfates that contribute to the methylation of mercury

Sulfideore copper mining is one of the most toxic industries in America and doesn’t belong anywhere near the Boundary Waters” Landwehr said in a statement

What is coppersulfide mining 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

Mining Metals 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

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 Metal ores like copper zinc and lead are minute quantities contrasted to the whole composition of the earth

Sulfide mining is different from traditional iron ore mines and taconite mining sometimes referred to as ferrous mining Sulfide mines have never been operated safely – no mine of this type has been known to have operated and closed without polluting local lakes rivers

Reader John Hesterberg responds to Trumps pollster Even Iron Rangers oppose mining near the Boundary Waters

Sulfide mining also known as metallic mining refers to mining operations which remove metals such as copper nickel platinum and others from sulfur bearing ores 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 minerals However copper oxide ores are more abundant

Sulphide Ores Optimize your recovery and reagent consumption for sulfide ores with customized technical solutions At Clariant Mining Solutions we are proactive solutionseekers committed to optimizing your mineral processing operations through creative problemsolving

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 Coppersulfur ore Called copperbearing pyrite In addition to copper minerals iron sulfide can be recovered and the main mineral of sulfur is pyrite

Jan 17 2019 · In every direction interconnected waterways laced the forest and when considering sulfideore 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

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 Acid Mine Drainage and find numerous examples all over the world of environmentally devastating and costly damage

Complex sulfide ores containing sulfides of copper zinc and lead are especially common as are complex copper nickel cobalt antimony and mercury ores Many sulfide ores contain Pt Au Ag Cd In Se and Te as admixtures Most deposits of sulfide ores are endogenous and among those hydrothermal deposits predominate

May 08 2015 · Sulfideore copper mining is a risky type of mining that has never been done before in Minnesota No matter the method sulfideore copper mines proposed near the Boundary Waters would extract trace amounts of metals from large volumes of rock Rock is blasted from pit walls and sorted into metalbearing ore and waste rock

Sulfideore mining is dangerous everywhere and most dangerous in wet environments And the Boundary Waters is nothing if not wet The consequences of such mining are perpetual They will surely

B Processing of Sulfide Ore Sulfide ores are generally processed using pyrometallurgy the extraction and purification of metals by processes involving the application of heat This process uses a series of physical steps and high temperatures to extract and purify copper from copper sulfide ores in four basic steps 1 froth flotation 2 thickening 3 smelting and 4 electrolysis

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 Americas most visited Wilderness and Minnesota s crown jewel from proposed sulfideore copper mining

Sulfides are minerals that contain sulfur These minerals are inorganic compounds which means that they are formed through geological rather than biological processes These minerals are commonly found in soils with a higher temperature Oxides are those minerals that contain oxide anions or oxygen

Public debate in the Arrowhead has focused on the promised benefits of allowing sulfide ore mining to proceed within the watershed of the region’s iconic Boundary Waters Canoe Area while consideration of cost has been all but nonexistent Key Findings

Most of the copper ores mined today are oxide or sulfide ores Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction Sulfide Ores 11–14 but is introduced here because an important byproduct of this process is used for the extraction of oxide ores

Sulphide Gold Ore Treatment by Leaching and Flotation Process Previous Next Problem with gold recovery from sulphide ore How may a mill get the maximum recovery of gold from a sulphide ore at the least capital cost and at the same time obtain the highest net return