The plants in the Saguenay region produced 40 per cent of the aluminum that the Allies used during the war Alcan built another smelter in Shawinigan in 1941 and one in each Beauharnois and La Tuque the next year Did you know During the Second World War thousands of workers at the Arvida plant staged an illegal strike
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Bauxites are typically classified according to their intended commercial application abrasive cement chemical metallurgical refractory etc The bulk of world bauxite production approximately 85 is used as feed for the manufacture of alumina via a wet chemical caustic leach method commonly known as the Bayer process
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2 days ago Anglesey in north Wales was chosen as a suitable site for an aluminium extraction plant However this plant was shut down in 2013 after the nearby power station was decommissioned
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Bauxite is used to produce alumina which is then used to produce aluminum Naturally occurring radioactivity in bauxite ores is concentrated during the refining process creating TENORM in bauxite refining residuals
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Abrasive grade bauxite is fused to manufacture brown fused alumina used in abrasives and refractories Alumina The remaining mined bauxite about 10 is processed using the Bayer Process to manufacture ATH the precursor to a range of non metallurgical grade alumina NMGA grades which serve a wide variety of end uses
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The Bayer Process was invented and patented in 1887 by Austrian scientist Karl Josef Bayer Two to three tonnes of bauxite are required to produce one tonne of alumina 90 of the global alumina supply of around 90 million tonnes is used in aluminium production Alumina refineries tend to be located close to bauxite mines and/or ports for efficient
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