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Question
What is the role of flux in metallurgical processes?
Solution
The ores, even after concentration, contain some gangue. To remove gangue, certain substances are mixed with concentrated ore which combine with the gangue to form a fusible material which is not soluble in molten metal. The substances used are called fluxes.
Fluxes are classified as:
(i) Acidic flux and
(ii) Basic flux. Acidic flux removes basic impurities while basic flux removes acidic impurities.
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