chem by sanskriti jha https://padlet.com/sansjha007/a1q59mw82tzjcrrx en-us 2021-09-28 03:37:44 UTC 2021-09-28 03:54:12 UTC hello@padlet.com Niyati https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773232107 Copper mining is usually performed using open-pit mining, in which a series of stepped benches are dug deeper and deeper into the earth over time. To remove the ore, boring machinery is used to drill holes into the hard rock, and explosives are inserted into the drill holes to blast and break the rock.]]> 2021-09-28 03:39:45 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773232107 Problem statement: The process of copper mining has severe effects on the environment. saanviboorugu2222 https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773232575 2021-09-28 03:39:58 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773232575 Niyati https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773233585 As in all mining operations, the ore must usually be beneficiated (concentrated).]]> 2021-09-28 03:40:25 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773233585 Niyati https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773235409 A peer-reviewed 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.]]> 2021-09-28 03:41:13 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773235409 Saanvi saanviboorugu2222 https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773235957 Copper is already endangered as it is extracted excessively, because it is used in electrical equipment such as wiring and motors. It is also used in construction for plumbing and roofing, it is also has use in industrial machinery.]]> 2021-09-28 03:41:28 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773235957 Darsh https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773237797 Copper is somewhat rare because of how much humans have already extracted it from the Earth's crust.]]> 2021-09-28 03:42:14 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773237797 https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773239144 The extraction of minerals from nature often creates imbalances]]> 2021-09-28 03:42:50 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773239144 https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773239870 Copper mining generates large quantities of waste, tailings, and acid outflows causing long-term environmental impacts and potential threats to human health]]> 2021-09-28 03:43:08 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773239870 Tirth https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773239984 The mining industry uses sulphuric acid in the extraction and treatment of copper. The extraction processes are called heap and situ leaching; during these processes, particles react with each other to create acidic mists that not only harm people’s skin, eyes and lungs, but also destroy crops, deteriorate the quality of the land, and damage nearby buildings. The acid dust both smells and tastes bad.]]> 2021-09-28 03:43:11 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773239984 https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773243567 In addition to processing copper ores, new and old copper scrap or copper alloys can be melted, re-purified, and recycled into new components. It is estimated that such recycling supplies 50% of copper used in the copper industry]]> 2021-09-28 03:44:48 UTC https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773243567 Saanvi saanviboorugu2222 https://padlet.com/sansjha007/a1q59mw82tzjcrrx/wish/1773246403 Copper is malleable, ductile, and an extremely good conductor of both heat and electricity.

• A computer contains around 1.5 kg of copper, a typical home about 100 kg and a wind turbine 5 tonnes.

• Copper has low chemical reactivity. In moist air it slowly forms a greenish surface film called patina; this coating protects the metal from further attack.

• Copper is easily alloyed with other metals. Currently, there are around 570 copper alloys listed.

• Brasses and bronzes are probably the most well-known families of copper-base alloys. Brasses are mainly copper and zinc. Bronzes are mainly copper along with alloying elements such as tin, aluminum, silicon or beryllium.

• Useable copper reserves are subject of debate. Some predict 'peak copper' will be reached somewhere 2025-2030; Others claim there is much more available. See below.

• Around 95% of all copper ever mined and smelted has been extracted since 1900.

• Copper’s use averages out at around 140-300 kg per capita in developed countries

• Copper along with oil and gold are among the most traded commodities.
Acute industrial exposure to copper fumes, dusts or mists can result in chronic copper poisoning.

 

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