Alumina is used for the production of aluminium metal, through the Hall–Héroult electrochemical smelting process. It is also used in applications such as industrial and medical ceramics, sandpapers, pigments, cosmetics and pharmaceuticals. The Bayer Process is the .
Any of several forms of aluminum oxide used in aluminum production and in abrasives, refractories, ceramics, and electrical insulation. Alumina occurs naturally as the mineral corundum and, with minor traces of chromium and cobalt, as the minerals ruby and sapphire, respectively. In its hydrated form it also occurs as the rock bauxite.
• The production of aluminium from bauxite requires about 20 times more energy than does scrap aluminium. • For example, 80 percent of our tin and 75 percent of our bauxite come from the Third World. • It has three distinct stages of processing bauxite mining, alumina refining and ingot smelting.
The noun bauxite can be countable or uncountable.. In more general, commonly used, contexts, the plural form will also be bauxite.. However, in more specific contexts, the plural form can also be bauxites in reference to various types of bauxites or a collection of bauxites.
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The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning. Metals:aluminium, aluminum, barium... This is the British English definition of bauxite . View American English definition of .
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Alcoa named one of the world's three most sustainable corporations. During a ceremony at the World Economic Forum in Davos, Alcoa is recognized as one of the top three sustainable corporations, from a global database of 2000, in Innovest's listing of the Global 100 Most Sustainable Corporations.
Case Study: Extraction Of Aluminium. Aluminium is extracted from aluminium oxide ( Al2O3) or known as bauxite. The electrolytic cell is an iron tank lined with carbon, which acts as the cathode. The anodes are blocks of carbon dipped into the electrolyte. The electrolyte is a .