MetallurgyHard
Question
Which one of the following is not a method of concentration of ore ?
Options
A.electromagnetic separation
B.smelting
C.gravity separation
D.froth floatation process
Solution
In smelting the concentrated oxide ores like haematite, tin stone even after concentration, is heated with flux to remove the acidic or basic impurities forming the slag. All other processes are used for removing the earthy/silicious impurities.
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