Type of Technology : Indigenous

Area of Technology : Materials and Material Science

Brief Description

Zinc ingots are charged into a gas/oil fired furnace and the molten zinc vaporised at 1050°C. the zinc vapours are conducted to consider where they are shock cooled with a stream of Nitrogen. While zinc dust collects in the condenser, the nitrogen is passed through a cyclone and bag filter. Nitrogen can be recirculated or let out.

Major raw materials

Zinc, fuel oil, nitrogen

Major Plant Equipment/Machinery

Zinc melting furnace; Power saw; condensers; cyclones.

Area of Application : Minerals, Metals and Materials

Applications

Zinc rich paints hydrosulphite industry, chemical reagent in various processes; Silver-zinc batteries; Spray Galvanising; Sherardizing/Peen plating;Pesticides; Special grease formulations.

Status of Development

The process has been developed both on bench and semi -pilot plant scale.

Ecological/Environmental Impact

Pollution free flue gas exhaust system in the kiln should be provided.

Patenting details : Patent filed

Technology Transfer Assistance Offered

Includes (a) Process know-how (b) Details of the equipment (c) Plant lay-out (d) Quality assurance methods. Assistance in setting up the plant and separate terms

Additional Information

A plant with 300 tpa capacity costs Rs. 250 lakhs. ROI is 35% at a selling prices of Rs.60,000/- per tonne.

Contact for more information:

Director
National Metallurgical Laboratory
Jamshedpur-831 007, India