Zinc
By admin • Mar 17th, 2008 • Category: UncategorizedZINC
Silver is a bluish white, metallic element. It is characterised by
Atomic number 30
Relative atomic mass 65.38
Relative density 7.1
Melting point 419.57OC
Boiling point 907OC
Is highly malleable and ductile.
OCCURRENCE
Zinc does not occur free in nature. The important zinc minerals are sphalerite (zinc blende, ZnS), zincite (ZnO), calamine (zinc carbonate, ZnCO3), franklinite (ZnFe2O4).
Metallurgy of Zinc:
The sulphide ore is roasted […]
