MetallurgyTechniques - Recovery of Vanadium Pentaoxide from Vanadium Bearing Sludges of Alumina Industry

Type of Technology : Indigenous

Area of Technology

1. Materials and Material Science, 2. Waste Management

Brief Description

The process is simple, low cost capital intensive and can easily be adopted in a small scale sector. In the first stage of the process, the sludge is dissolve in water and filtered, in the second stage the filtrate is acidified and then vanadium is precipitated out from the acidified solution. The process enables 90% of vanadium recovery with over 98% purity.

Major raw materials

(a) Vanadium Sludge (average 10% V₂0₅), (b) Hydrochloric acid, (c) Ammonium chloride

Major Plant Equipment/Machinery

Leaching, precipitation and storage tanks, (b) Filter press, (c) Centrifuge filter, (d) Drier, (e) Muffle furnace, (f) Centrifugal pumps, (g) Acid pump etc. - costing Rs. 30 Lakhs.

Area of Application : Minerals, Metals and Materials

Applications

For production of ferro-vanadium which is used in alloy steels and also as a catalyst to produce sulphuric acid.

Status of Specific Development :

Process standardised at a scale of 2t/day sludge

Ecological/Environmental Impact

Effluent generated during the process need to be treated before disposing off

Patenting details : Patent filed

Technology Transfer Assistance Offered

(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 battery limit plant with capacity to process 2 to 3 tonne of sludge/day in 3 shifts costs approximately Rs. 60 Lakhs

Contact for more information:

Director
National Metallurgical Laboratory
Jamshedpur-831 007, India

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