Type of Technology : Indigenous

Area of Technology : Materials and Materials Science

Brief Description

The process consists of selective separation of Chromium from the sludge and converting the Chromium-free sludge to ferro nickel. The process recovers above 95% of Ni & Cr.

Major raw materials

Sludge of stainless steel pickling bath constainng Ni & Cr and other chemicals which are available indigeneously.

Major Plant Equipment/Machinery

Electric/Gas fred furnace, Leaching tanks, Filtration equipment and Reaction vessels.

Area of Application

Minerals, Metals and Materials

Applications

Nickel and Chromiun are used as alloying element in making of alloy steels

Status of Development : Ready for commercial use

Ecological/Environmental Impact

No specific measures are required except for those usually adopted

Patenting details : Patent fied

Technology Transfer Assistance Offered

(a) Process know how (b) Detail of equipment (c) Plant lay out (iv) quality assurance methods. Assistance can be provided at the time of production or trails on separate terms and conditions.

Additional Information

A plant and equipment with capacity to process 2 ton/day of sludge costs approximately Rs. 30 Lakhs

Contact for more information:

Director
National Metallurgical Laboratory
Jamshedpur-831 007, India