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Aluminum Manufacturing
Aluminum
Overview
Sustainability
of
Aluminum
100% recyclable and sustainable metal
The
Science
Sustainability
of Aluminum
The metallic element aluminum is the third most plentiful element in the earth's crust, comprising 8% of the planet's soil and rocks (oxygen and silicon make up 47% and 28%, respectively). In nature, aluminum is found only in chemical compounds with other elements such as sulphur, silicon, and oxygen. Pure, metallic aluminum can be economically produced only from aluminum oxide ore
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Positive Aspects
+ Many Industries rely on it
+ Independent studies have confirmed that aluminum in automobiles has a 20 percent smaller life cycle CO2 footprint than steel. And compared with steel vehicles, a fleet of aluminum vehicles saves the equivalent of 44 million tons of CO2 emissions.
+Although aluminum is the most reactive metal in common use, it is highly resistance to weathering and corrosion
+The metallic element aluminum is the third most plentiful element in the earth's crust
+Metallic aluminum has many properties that make it useful in a wide range of applications. It is lightweight, strong, nonmagnetic, and nontoxic. It conducts heat and electricity and reflects heat and light. It is strong but easily workable, and it retains its strength under extreme cold without becoming brittle. The surface of aluminum quickly oxidizes to form an invisible barrier to corrosion. Furthermore, aluminum can easily and economically be recycled into new products.
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Negative Aspects
-There are environmental impacts associated with each stage of aluminum production, from extraction to processing
-The major environmental impact of refining and smelting is greenhouse gas emissions.
-CO2 emissions occur during smelting and result from the consumption of carbon anodes and from PFC emissions.
-SO2 is one of the primary precursors of acid rain.
-some evidence linking aluminum to Alzheimer’s disease
The aluminum industry supports the life cycle assessment approach to research which tracks the impact of a product in all stages of its life -- from raw material extraction, to production and use, to disposal or recycling.
Since the dawn of the aluminum industry, the name Alcoa has been synonymous with operational excellence and leadership in the production of Bauxite, Alumina and Aluminum products
global leader in innovative and high value-added aluminium products and solutions dedicated primarily to aerospace, automotive and packaging markets
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leading producer of flat-rolled aluminum products and the world’s largest recycler of aluminum.
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