Extraction of bauxite--Alumina

    Date:  2016-07-14Author:  ZENITH

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 most economic means of obtaining alumina from bauxite.

alumina

Process stages:

1. Milling

2. Desilication

3. Digestion

4. Clarification/Settling

5. Precipitation

6. Evaporation

7. Classification

8. Calcination

Finally can get the alumina And it is a white powder, is the product of this step and the final product of the Bayer Process.


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