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Policy Round table on “Use of Spent Pot Liners in Cement Co- Processing”

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Date/Time
Date(s) - 22/09/2015
2:30 pm - 5:30 pm

Location
Bhabha Chamber, Scope Complex

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Policy Round table on “Use of Spent Pot Liners in Cement Co- Processing”

A Round Table on “Promoting use of Spent Pot Liners in Cement Co-processing” was organised under the Knowledge Exchange Platform (KEP), which is a joint initiative of Bureau of Energy Efficiency (BEE) and Institute for Industrial Productivity (IIP) on 22nd September, 2015 at SCOPE New Delhi‏. KEP is aimed at transfer of best practices within and across different in industry sectors covered under the Perform Achieve and Trade (PAT) scheme. In line with this objective, KEP has initiated a ‘Knowledge Series’ on key policy and thematic issues and this round table was structured around the concept of ‘Circular Economy’.

The production process of Aluminum involves conversion of Alumina to Aluminium through an electrolytic process that takes place in a pot. These pots are steel containers lined with refractory brick with an inner lining of carbon. The carbon liner is usually up to 15 inches thick and serves as the cathode in the electrolysis process that transforms aluminum ions from the molten bath to molten aluminum. Spent Pot Liner (SPL) is a by-product that is generated during this conversion. Depending on the life of the pot, SPL is chipped off from the pot for disposal and relining. SPL is considered hazardous because of the presence of cyanide, soluble fluoride and volatile compounds. The most commonly adopted practice of its disposal is through secured land fill, which is not seen as an acceptable option for the future. Other than its toxic contents, SPL has certain characteristics, which if properly harnessed can not only provide useful energy source but also help in mitigating carbon dioxide emissions in other industries like Cement. In cement industry it can act as an alternate fuel, while the Sodium content of SPL can act as a flux and fluorine can act as a mineraliser for cement manufacture.

However, despite these useful properties of SPL, it is not being widely used in cement manufacture or other industries due to: a). Lack of availability of appropriate technologies to de-toxify SPL; b). Facilitation by Regulatory agencies to promote the use of de-toxified SPL and it’s transport; and c). Lack of coordination and linkage between the Aluminium and Cement industry. To resolve these issues and come out with a viable way forward, KEP organised the round table on Promoting use of Spent Pot Liners in Cement Co-processing, by bringing together all the important stakeholders on a common platform for identification of the existing barriers and challenges and working out an effective strategy to deal with them. The round table was supported by Vedanta Ltd., which helped KEP in organizing the event.

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Participants at the Round table on Use of SPL in Cement Co-processing

The Round table was attended by more than 50 participants with representation from key opinion leaders of Aluminium and Cement Sectors, Industry Association (Cement Manufactures’ Association (CMA) and Jawaharlal Aluminium Design and Development Research Centre (JNARDDC), Technology Supplier (Regain, Australia), Regulators (Central Pollution Control Board), BEE and IIP.

The  proceedings of the Roundtable Meeting can be downloaded from the following link, Proceedings of the Roundtable on Use of SPL in Cement Co-processing which includes discussions and inputs received from the participants of the meeting.

The presentations made at the meeting are presented below.

Round Table on “Promoting Use of Spent Pot Liners (SPL) in Cement Co-processing”
INTRODUCTION (2.30 PM- 2.40 PM)
Introduction to the meeting and expectationsMs. Ritu Bharadwaj , Senior Program Manager, Institute for Industrial Productivity, India
PANEL 1 (2.40 PM-3.40 PM) : INDUSTRY PERSPECTIVE ON USE OF SPL FOR CEMENT CO-PROCESSING
ChairmanMr. S. K. Wali, Whole time Director, J.K. Lakshmi Cement & Chair, Cement Sector Learning Group
Part A: Aluminium Sector
Presentation by Vedanta LimitedDr. Mukesh Kumar, President, Head Group Technology
Presentation by Hindalco Group Mr. Akhileshwar Nath Upadhyay, Manager Sustainability and Environment
Presentation by Vedanta Group (BALCO, Lanjigarh and Jharsuguda)Team Vedanta
Presentation by NALCO Ms. Binuta Patra, AGM (Chem) R&D dept

Mr. Abhijit Sinha, AGM (Met)SHE dept
Part B: Cement Sector
Presentation by Dalmia Cement(Bharat) LimitedMr. Sanjay Jain, Assistant Executive Director
Presentation by Dalla Cement FactoryMr. U.S. Chaudhary, GM (Process)
Presentation by Geocycle IndiaMs. Moumita Chakraborty, General Manager
PANEL 2 (3.40 PM - 4.40 PM) : NATIONAL AND INTERNATIONAL TECHNOLOGIES AVAILABLE FOR SPL UTILIZATION
ChairmanDr. Mukesh Kumar, President, Head Group Technology, Vedanta Limited
Presentation by Jawaharlal Nehru Aluminium Research Design and Development Centre (JNARDDC)Dr. Anupam Agnihotri, Director
Presentation by Regain Services Pty Limited, AustraliaMr. Phil Black, Vice President – Aluminium Industry Development
PANEL 3 (4.40 PM - 5.15PM) : REGULATORS PERSPECTIVE ON SPL USE
Chairman Dr. B. Sengupta, Former Member Secretary , Central Pollution Control Board
Regulation and management of spent pot lining Dr. B Sengupta, Former Member Secretary
Presentation by Central Pollution Control BoardMr. P K Gupta, Joint Director
CONCLUDING REMARKS (5.15PM - 5.30PM)
Mr. K. K. Chakarvarti, Expert Consultant, Bureau of Energy Efficiency

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