Introductin

A considerable amount of zinc is wasted as dross during the galvanising of iron and iron based alloys. Pollution problems are also encountered due to the use of ZnCl2/ NH4 Cl. To avoid this problems, a flux based on triple salt is invented. Three steps of chemical synthesis is required to get the desired products 20-30% aqueous solution of flux is prepared and the fluxing of articles to be galvanised is performed for 30-60 seconds at room or slightly elevated temperature.

Major raw materials

ZnCl2 , NH4 Cl, two other chlorides, surfactants etc.

Major Plant Equipment/Machinery

Reaction vessel, boiler, filter press, centrifuge etc.

Area of Application : Minerals, Metals and Materials

Applications

Standardised at 1000 kg per day scale.

Status of Specific Development :

Standardised at 1000 kg per day scale.

Ecological/Environmental Impact

General precaution of using chemicals in industries.

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 a capacity of 600 TPA will cost Rs. 20 lakhs. R.O.I. is 25% at selling price of Rs. 30,000 per ton. Suitable for small scale industries.

Contact for more information:

Director
National Metallurgical Laboratory
Jamshedpur-831 007, India
Tel: (0)657-2271715, 2270092
Fax:(0)657-2270527
Email: director@nmlindia.org