The greatest known reserve of copper ore in one body is the deposit at El Teniente mine in Chile. Many lesser deposits are being exploited, such as those in CanadaChina, Australiaand Europe.
Copper Mining and Extraction: We rely on copper for power, lighting, heating, communications, water supply and transport. Copper makes our homes, schools and businesses efficient, comfortable and decorative and it lasts for many years.
Copper has a remarkable combination of properties. It is a good electrical and thermal conductor. As with all world resources, the supply of copper from the ground is limited. Ever since copper was first mined, it has been recycled. Copper is very well suited to being recycled because it can be remelted endlessly with no loss of properties.
For example, old copper plumbing pipes, taps and car radiators are a major source of recycled copper.
They can all be melted down and made into new products. Even the few grams of copper in your mobile phone is worth recovering. Copper is an unreactive metal, it reacts only slowly with the atmosphere.
This means that huge lumps of copper metal are found buried in the ground as nuggets. The largest nugget of native copper ever found came from Minnesota, USA and weighed over tonnes. Therefore it is of little commercial importance.
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 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. These produce many millions of tonnes of copper ore per year. The main ores of copper are sulfides and oxides. From their chemical formulas you can calculate the percentage of copper in each mineral.
However this is not the same as the percentage of copper in the ore as that also contains unwanted silicates and other minerals, called gangue, that will have to be separated. They occur in both sedimentary and igneous rocks. The outer 10 km of the crust contains 33 g of copper for every tonne of rock.
This is not enough to make it commercially viable to extract the rock. Copper mines are only set up where there is more than 5 kg of copper per tonne of rock 0. This is due to the volcanic activity that is part of the process that created the Andes mountain chain.
This is the west coast of South America, showing the line of volcanoes that stretches along the whole west coast of the continent. They are caused by subduction of the Nazca tectonic plate under the continent.EXTRACTION OF COPPER FROM OXIDISED COPPER ORE Aim: To analyse how copper is obtained from oxidised copper ore using the processes of leaching, solid-liquid separation, displacing and electrowinning.
Weatherly International’s Tschudi Copper project is located in Namibia, home to two of the top ten biggest uranium mines in the lausannecongress2018.comi is a low-cost open-pit mine extracting oxidised copper ore to be treated through heap-leach, solvent extraction and electro-winning.
This page looks at the extraction of copper from its ores, its purification by electrolysis, and some of its uses.
Before you get too bogged down in the extraction of copper, make sure that you need it for whatever syllabus you are using. To understand the basic principles of copper extraction from ores; To understand the basis of it s purification by electrolysis; The sulfur has been oxidized (increase in oxidation state).
The reducing agent is therefore the sulfide ion in the copper(I) sulfide. in which K 3, K 2 and K 1 are the reaction rate constants for linolenic, linoleic and oleic acid, respectively. The K3 is much larger than K2 and K,.
In nearly all hydrogenations, linolenic acid is transformed into compounds which are less saturated. Electrolytic Tough Pitch Copper – Cu-ETP, Cu-ETP1.
Electrolytic Tough Pitch (ETP) copper is the most widely used grade of copper in electrical applications all over the world and represents over half of global copper .