Page 2 - 3. Lesson Notes - Ch-3 Mettalurgy-1
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metal Ores)

                       3.  Refining of Impure Metals- Electrolytic Refining of Metals.
















































                                               Steps of EXTRACTION-







                     Detailed Study of the various steps of Extraction-

                   1.  ENRICHMENT of the ORE-
                   ➢  Ores that are mined out from the earth contains contaminants with large
               amounts of impurities including soil, sand, etc.

                   ➢  These are known as gangue which must be removed from the ore before
               extraction of the metal.

                   a.  Concentration of the ORE-
                   ➢  The processes involved in removing gangue from ore are based on



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