copper mining waste rock
Rock Collecting Tour of the Western Upper Peninsula of ...
Rock Collecting Tour of the Western Upper Peninsula of Michigan - "The Copper Country" ... These three minerals all contain copper and are the types of ore mined in some western copper mining districts which do not have the free copper of the Keweenaw Peninsula. ... In the waste rock of the Wolverine mine you can find geodes or cavities lined ...read more
TENORM: Copper Mining and Production Wastes | Radiation ...
Waste rock and overburden (39%). Some of the copper mine wastes have been put to use, but on a limited scale. Mixtures of crushed waste rock, including waste rock from the copper mines, have been used to construct embankments, fills, or pavement bases for highways.read more
How Is Mining Waste Recycled? - CMA Ecocycle Australia
Mining waste comes in many forms and varies from harmless to highly hazardous. Find out what happens to it after it gets extracted. ... Waste rock and tailings may still contain a low concentration of the target material such as copper or gold and may be reprocessed if the price of the metal rises to a point where it becomes economic to do so.read more
www.pwc.com 2012 Americas School of Mines
2012 Americas School of Mines W Scott Dunbar University of British Columbia ... Mine Waste Management 19 Consider a copper mine with 0.5% grade (That’s one part in 200 parts). If the mining rate is 170,000 tonnes per day, 360 days per year over 20 years, 1.224 ... Rock Mine Waste Management 28 30 m ~ 2.5 kmread more
How mining generates toxic waste - Codelco Ecuador
How mining generates toxic waste. Open pit mining results in huge quantities of waste rock. First, to reach the underground ore deposit huge quantities of rock must be removed. This rock, called overburden, is dumped as waste. Secondly, the copper ore itself is very low grade.read more
Innovations: Introduction to Copper: Mining & Extraction
Mining of copper ores is carried out using one of two methods. Underground mining is achieved by sinking shafts to the appropriate levels and then driving horizontal tunnels, called adits, to reach the ore. Underground mining is, however, relatively expensive and is generally limited to rich ores. El Teniente, in Chile, is the world's largest ...read more
Treasure from trash: how mining waste can be mined a ...
Jun 28, 2016· Treasure from trash: how mining waste can be mined a second time ... the historic Baal Gammon mine in northern Queensland once produced copper, ... which contains mine waste …read more
Tailings Dams: Where Mining Waste is Stored Forever ...
Jul 30, 2012· Now imagine that pit filled with up to 10 billion tons of mining waste. ... Tailings Dams: Where Mining Waste is Stored Forever ... and the tailings pond at one of the world’s largest copper ...read more
How can metal mining impact the environment? | American ...
Acid rock drainage from waste rock. Although the character of waste rock varies with the type of ore, many waste rocks contain sulfide minerals associated with metals, such as lead, zinc, copper, silver, or cadmium. An important sulfide mineral common in waste rock is pyrite, iron sulfide.read more
Copper mining. From ore to copper. - SchoolScience.co.uk
The unwanted waste rock (gangue) falls to the bottom and is removed. The froth is skimmed off the surface and the enriched ore (mainly the copper mineral) is taken away for roasting. The mixture of water, foaming agent and paraffin is recycled. After this stage the enriched ore now contains about 25% copper by mass.read more
General Plan of Operations Resolution Copper Mining
General Plan of Operations Page | iii Resolution Copper Mining Initial Submittal: November 2013 | Revised: September 23, 2014 TABLE OF CONTENTSread more
Copper Mining and Extraction: Sulfide 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. These mines have now closed and today the biggest copper mines are in Chile (Escondida mine) and Indonesia (Grasberg mine).read more
Waste Rock Dump Management and Stability Evaluation
Waste Rock Dump Management and Stability Evaluation D Olivier SRK The management of mine waste dumps has historically been assigned mainly to the on-site mining operations. In recent years, focus has turned to a more scientific approach to waste rock dump management and the auditing of these manmade structures.read more
TENORM: Copper Mining and Production Wastes | US EPA
Tailings, also called mine dumps, culm dumps, slimes, tails, refuse, leach residue, slickens, or terra-cone (terrikon), are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining ...read more
Chemical Composition of Samples Collected from Waste Rock ...
1. View west of Dry Valley mine showing waste rock backfill into open pit on right. 2. Various colors and sizes of rock in a complex of waste rock dumps at an active phosphate mine in southeastern Idaho illustrate the heterogeneous lithology and grain size characteristics of dumps. 3.read more
Mining and Water Pollution — Safe Drinking Water Foundation
Dec 17, 2016· Waste from the Mining Process. Ore is mineralized rock containing a valued metal such as gold or copper, or other mineral substance such as coal. Open-pit mining involves the excavation of large quantities of waste rock (material not containing the target mineral) in …read more
Tailings.info What are tailings? - Their nature and production
Tailings consist of ground rock and process effluents that are generated in a mine processing plant. Mechanical and chemical processes are used to extract the desired product from the run of the mine ore and produce a waste stream known as tailings.read more
Mining Waste | Special Wastes | Wastes | US EPA
The ratio between waste rock and ore production is called the stripping ratio. For example, a stripping ratio of 2:1 means that 2 tonnes of waste rock needs to be mined to mine 1 tonne of ore. Generally, an open pit mine has a higher stripping ratio than an underground mine. Waste rock is often stored close to the mine to minimize transports.read more
Ok Tedi environmental disaster - Wikipedia
Ok Tedi environmental disaster ... it is a consequence of the discharge of about two billion tons of untreated mining waste into the Ok Tedi from the Ok Tedi Mine, ... This allowed all ore processing residues, waste rock and overburden to be discharged into the Ok Tedi River.read more
Copper Mining and Production Processes Explained
Processes: copper mining and production. Copper is found in natural ore deposits around the world. This page explains copper mining: the production route taken from ore-containing rock to a final product that is the highest-purity commercial metal in existence and used in a wide variety of applications essential to modern living.read more
Mining Waste - an overview | ScienceDirect Topics
The total amount of hard coal and ore mining and processing waste laying in dumps at the end of 2000 was 1253.5 Mt that was 63.4% of total amount of all wastes disposed throughout the country. Of that, hard coal mining waste comprised 53.3% and metal ore (copper) mining and processing, 46.7%.read more
Management of Tailings and Waste-Rock in Mining …
Management of tailings and waste-rock in mining i EXECUTIVE SUMMARY Scope of this work This work covers activities related to tailings and waste-rock management of ores that have the potential for a significant environmental impact. In particular the work sought out activities that can be considered as examples of “good practice”.read more
Viewpoint: Mine proposal may lead to contaminated waters ...
2 days ago· Viewpoint: Mining proposal would threaten Menominee watershed, destroy burial grounds. Common sense tells us that a dam made of sandy soil and crushed waste rock …read more
Energy and Environmental Profile of the U.S. Mining …
Energy and Environmental Profile of the U.S. Mining Industry 5.1.3 Copper Processing Prior to pyrometallurgical, the ore (which often contains less than one percent copper) is crushed and ground with water and placed in a concentrator. The rock/water slurry is subjected to physical and chemical actions (i.e., air sparging and hydrophobic chemicalread more
Copper Mine - Elmhurst College
In addition, about 3 tons of waste rock need to be removed to recover one ton of copper ore. Each year this mine produces 475,000 tons of concentrated copper ore (28% Cu), which eventually comes to 130,000 tons of pure copper metal, and 2 million ounces of silver. Asarco mining linkread more
User Guidelines for Waste and Byproduct Materials in ...
In addition, some waste rock from copper, gold, and uranium mining is leached to recover additional ore. Since cyanide is used for leaching, such waste rock should not be …read more
Mining Waste Treatment Technology Selection—Technology ...
At the Dunka Mine site in Minnesota, a former taconite (iron-bearing rock) mine, closure included capping and regrading just over 190 acres of waste rock for a total cost of $3.9 million dollars. Costs ranged from $ 13,000/acre for a soil cover to $ 50,000/acre for flexible membrane liners.read more
Mining - Wikipedia
Mining is the extraction of valuable minerals or other geological materials from the earth, usually from an ore body, lode, vein, seam, reef or placer deposit.These deposits form a mineralized package that is of economic interest to the miner. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay.read more
Office of Wastewater Management - Hardrock Mining Wastes
Waste Rock Definition The primary and most prevalent waste generated by many mining operations is waste rock, or overburden. Waste rock, which consists of rock and target minerals in concentrations too low for economic recovery, is removed along with the ore.read more
Proposed Black Butte Copper Mine in Meagher County
Tintina Resources submitted on December 15, 2015 an application with the Department of Environmental Quality for a Mine Operating Permit for an underground copper mine in Meagher County in west-central Montana. The proposed mine is approximately 15 miles north of …read more