Recovery of Vanadium Pentaoxide from Vanadium Bearing Sludges of Alumina Industry
Type of Technology
Indigenous
Area of Technology
- Materials and Material Science,
- 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
- Vanadium Sludge (average 10% V205),
- Hydrochloric acid,
- Ammonium chloride
Major Plant Equipment/Machinery
- Leaching, precipitation and storage tanks,
- Filter press,
- Centrifuge filter,
- Drier,
- Muffle furnace,
- Centrifugal pumps,
- 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
Includes
- Process know-how
- Details of the equipment
- Plant lay-out
- 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
For further information please contact
Director
National Metallurgical Laboratory
Jamshedpur-831 007, India
