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(pdf) assessing the environmental impact of metal

The effect of a number of process variables, namely ore grade, fuel source for electricity generation and efficiency of generation, on the environmental impacts was also examined

environmental impact economics metal extraction mining

Examples of disadvantages of exploitation of mineral resources and reduction of its social and environmental impact: Dust from mining–quarrying or processing can be reduced by air filter and precipitation systems and even hosing water on dusty areas or spoil heaps or carried away to somewhere else via tall chimneys

environmental impact of steel - theworldcounts

The mining of iron ore is highly energy intensive and causes air pollution in the form of nitrous oxide, carbon dioxide, carbon monoxide, and sulfur dioxide from diesel generators, trucks and other equipment. The mining of iron ore also causes water pollution of heavy metals and acid that drains from the mines

minerals | free full-text | recovering iron from iron ore

Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures were prepared from high-silica residues

recycling - ways of reducing the use of resources - aqa

Disadvantages of recycling. ... the waste copper will need processing before being melted again into copper for wiring. ... This reduces the cost of making steel from iron ore

13 advantages and disadvantages of recycling

List of Disadvantages of Recycling 1. More pollution and energy consumption. It's contradicting, but the reality is that recycling tons of garbage will require waste to be transported, sorted, cleaned and processed in separate factories, all of which need energy and …

what aluminum extraction really does to the environment

Nov 09, 2010 · The EPA says that the release of perfluorocarbons during the aluminum smelting process are 9,200 times more harmful than carbon dioxide in terms of their affect on global warming. When bauxite is extracted from the earth , the strip-mining process removes all native vegetation in the mining region, resulting in a loss of habitat and food for

copper production & environmental impact

• Recycling a tonne of copper uses 20% of the energy that would be used to mine and extract the same copper. • The copper recycling process has much in common as that to extract it, but requires fewer steps. High-purity copper is melted in a furnace and then reduced; Low-purity copper is refined through electroplating in sulfuric acid

pros and consof extracting metal versus recycling scrap

Aug 18, 2012 · Disadvantages: Extracting metal harms the environment. Not only does it cause soil, water, and air pollution, but it also causes noise pollution. If the company doesn’t do anything to alleviate pollution, the community will suffer the consequences. Extracting metal …

how can metal mining impactthe environment? | american

Material adapted from: Hudson, T.L, Fox, F.D., and Plumlee, G.S. 1999. Metal Mining and the Environment, p. 7,20-27,31-35,38-39. Published by the American Geosciences Institute Environmental Awareness Series. Modern mining operations actively strive to mitigate potential environmental consequences of extracting metals, and such operations are strictly regulated in the United

(pdf) impacts ofiron oremining on water quality and

The presence of metals affects the groundwater quality (Polanco et al., 2017;Buschmann et al., 2007), and is due to contact with the ore and human activity (Steckling et al., 2017)

the environmental impacts of iron andsteel industry: a

Sep 01, 2016 · Regarding the environmental impact on ‘Mineral Extraction’ (0.07%), one would expect to observe a higher impact considering the high amounts of iron ore consumed; but this was not the case. This could indicate that impact on mineral extraction was low in comparison to impacts that are directly associated with the production process of sinter

treatmentand recyclingof theprocesswater iniron ore

In order to ensure iron concentrate grade and iron recovery, a large number of processing reagents are selected and applied in the iron ore beneficiation. The process water carried plenty of residual processing reagents, and such wastewater with color depth and strong smell could seriously affect the environment and the local people

(pdf)assessing the environmental impact ofmetal

The effect of a number of process variables, namely ore grade, fuel source for electricity generation and efficiency of generation, on the environmental impacts was also examined

what arethe effects of not recycling? - gle scrap

According to the Institute of Scrap Recycling Industries (ISRI), recycling one ton of steel conserves 2,500 lbs. of iron ore, 1,400 lbs. of coal and 120 lbs. of limetsone. Another example is paper; if we don’t recycle paper then every time we need more paper trees get chopped down and harvested at a mill

environmental effects of extraction mineral resources

Anna University notes for environmental effects of extraction mineral resources in environmental science and engineering for CSE regulation 2013. Environmental costs of extracting mineral resources are explained in terms of land degradation, solid waste, air and water pollution

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