ELECTRO-METALLURGY
All metallurgical processes using electricity& electric effect.
It may be carried out at room or high temperature.
Classification:
(1) Electrothermic: Current is used for heating only.
e.g. E A F or I F steelmaking.
(2) Electrolytic:Currentis used for electrolysis.
-Electrowinning:Ext.ofmetal from aq.soln.(leach liquor) or fused salt.
-Electrorefining: Refining of metal(from impure anodes).
Electrowinningis commercially used for Al,Na,Mg,Cr,Cu,Nietc.
Merit-high purity metal.
Demerit-costly due to high cost of electricity
No comments:
Post a Comment