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This page starts by looking at the extraction of aluminium from its ore, bauxite, including some economic and environmental issu It finishes by looking at some uses of aluminium , Purifiying the aluminium oxide - the Bayer Process Reaction with sodium hydroxide solution...

Alumina Extraction Problem In the standard Bayer Process for refining bauxite to produce alumina, the dissolution of the alumina in the ore to form sodium aluminate is accomplished in autoclaves under high pressures varying from 70 to 200 pounds per square inch...

Extraction of Aluminium from bauxite Sir, We are interested in extracting aluminium , If I had the box already created to extract the impurities via hoop s method , The Bayer process is the principal industrial means of refining bauxite to produce alumina aluminium oxide Bauxite, the most important ore of aluminium, contains ....

21 Extraction of Aluminum The extraction of aluminum from its ore and subsequent processing into finished prod- , In the Western World, the Bayer 1 process, invented in the 19th century, is by far the most important process used in the production of alumi-num oxide from bauxite The process has been refined and improved since its inception...

Nov 12, 2012 0183 32 A short video clip illustrating the process of aluminium extraction that can be viewed online by students or downloaded for showing in class...