In the process of extracting alumina from bau | vedclass

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(C) The extraction of alumina from bauxite is carried out by the $Bayer's$ process. $Bauxite$ $(Al_2O_3 \cdot 2H_2O)$ is treated with a concentrated s

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Chemical separation (Leaching)

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(C) The extraction of alumina from bauxite is carried out by the $Bayer's$ process. $Bauxite$ $(Al_2O_3 \cdot 2H_2O)$ is treated with a concentrated solution of $NaOH$ at $473-523 \ K$ and $35-36 \ bar$ pressure. This process is a form of chemical separation known as $Leaching$,where $Al_2O_3$ dissolves to form sodium aluminate,while impurities like $SiO_2$,$Fe_2O_3$,and $TiO_2$ remain undissolved.

In the process of extracting alumina from bauxite,bauxite is concentrated by $......$.

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