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How is ore of aluminium concentrated ?...

How is ore of aluminium concentrated ?

A

roasting

B

leaching

C

froth floatation

D

using wilfley table

Text Solution

Verified by Experts

The correct Answer is:
b
Leaching is the method of extraction of aluminum form its ore (bauxite) by the treatment of powdered ore with a concentrated solution of NaOH resulting in dissolution of `AI_(2)O_(3)` leaving impurities behind as
`AI_(2)O_(33)(s)+2OH^(-)(aq)+3H_(2)Orarr 2[aI(OH)_(4)]^(-)(aq)`
This Process is called bayer process
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