Metals

METALS


Custom Search




CONVERSION OF CONCENTRATED ORE INTO METAL OXIDE


       After concentration of ores, the sulphide or carbonate ores of some metals are converted into metal oxides because it is easier to obtain metals from their metal oxides as compared to metal sulphides or metal carbonates. The sulphide ores of metals can be converted into their oxides by roasting while the carbonate ores of metals can be converted into their oxides by calcinations.

1. Roasting

       It may be defined as the process of strongly heating a sulphide ore in the presence of air to convert it into metal oxide. For example,

          2ZnS      +      3O2           2ZnO      +      2SO2
     Zinc sulphide                                         Zinc Oxide

          2PbS      +      3O2           2PbO      +      2SO2
     Lead sulphide                                       Lead Oxide

2. Calcinations

       It may be defined as the process of strongly heating a carbonate ore in the absence of air to convert it into metal oxide. For example,

                     CaCO3           CaO      +      CO2
            Calcium carbonate                 Calcium oxide




Test Your Understanding and Answer These Questions:





s

Developers of Fun Science
Rajan Gupta Rajan Gupta
M.Sc, B.Ed. & LL.B.
Teacher, Author & Innovator
Rahul Jindal
B.Tech
Entrepreneur & Innovator
Rahul Jindal

Share your comments / feedback here.
Fun Science