Zinc occurs naturally mainly in the form of:

• complex sulphides (Sphalerite)
• carbonates and silicates (calamines)

Within minerals, this element occurs by a percentage that goes from 4 to 20% and is generally associated to:

• lead
• copper
• iron

and to a lesser extent:

• silver
• cadmium
• germanium
• indium.

After the mineral is extracted, it is enriched by a flotation process, through which the part which is rich in zinc, after the use of specific reagents, comes to the surface, while the sterile part remains on the bottom.

A concentrate with 50-55% of zinc is thus obtained, ready for metallurgical processing, with which it is possible to obtain the material to manufacture our products, with almost absolute purity equal to 99.962%, in line with the standards laid down by Mortuary Authorities