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INTRODUCTION
Zinc
is one of the strategic non-ferrous metal next only to
Aluminium and Copper. It plays a very important role in
country's economy and develoment. Modern life is
inconceivable without zinc. It provides the most cost-effective
and environmentally efficient method of protecting iron
& steel from corrosion. By protecting iron and steel
against corrosion , zinc
extends its life, helps saving natural resources and
energy .
Besides,
its use in galvanizing
of iron and steel, it finds
applications in :
- Die casting alloys,
for automotive equipment and house hold
appliances, fitting, toys, tools ,
- Brasses,
- Dry cells,
- Agriculture,
- Chemicals, for tyre
and rubber goods,
- Pharmaceuticals,
fertilizers and cosmetics etc.
With
industrial development in India , use
of zinc has increased considerably,
however, specific consumption is much lower as compared
to other developing countries.
The
most important raw material for the production of zinc is
sulphide ore from which zinc is extracted either through
pyro-metallurgical route or through hydro-metallurgical-electrowin
route. At present nearly 80% of the worlds production of
primary zinc is through hydrometallurgical route the
balance is through pyro-metalurgical route.
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