RT Journal Article
T1 Valuable metals recovery from spent catalysts by selective chlorination
A1 Gaballah, I.
A1 Djona, M.
A1 Mugica, J. C.
A1 Solozobal, R.
AB The food, chemical, petroleum, petrochemical and other industries generate thousands of tons per year of spent catalysts containing up to 35% valuable metals such as Co, Cr, Cu, Ni, Mo, Ti, V, W. The recycling of these materials will lead to provision of significant quantities which are currently imported from outside the EC countries and could contribute to the improvement of the environment. Selective chlorination of these spent catalysts with different chlorinating gas mixtures between 300 and 600°C is investigated for the recovery of their valuable elements. Depending on the experimental conditions, it is possible to recover up to 98% of the Ni and Co, as chlorides from the chlorination residue and about 98% of the Mo, Ti & W and 80% of vanadium compounds in the condensates. The catalyst support chlorination could be limited to less than 5%. Besides the reaction temperature and time, the oxygen partial pressure in the chlorinating gas mixture is a key factor for the selectivity of the chlorination.
SN 0921-3449
YR 1994
FD 1994-04
LK https://hdl.handle.net/11556/3946
UL https://hdl.handle.net/11556/3946
LA eng
NO Gaballah , I , Djona , M , Mugica , J C & Solozobal , R 1994 , ' Valuable metals recovery from spent catalysts by selective chlorination ' , Resources, Conservation and Recycling , vol. 10 , no. 1-2 , pp. 87-96 . https://doi.org/10.1016/0921-3449(94)90041-8
NO This work is done in the framework of the raw material and recycling research program supported by the European Community (DG-XII contracts N ° MAIR-0014-C (A) and No. MA2R CD 910013 ). Patent was filed thanks to the DG-XIII support. The authors thank Drs. Donato M., Adjemian A., Hernandez-Ros J. and De Pauw E., Vinh Ch. (BP), Haudeville and Bousquet (ELF), Berrebi G. and Roumieu R. (Eurecat), Michaud and Cruniaux Simon (mobil), Angelhard Ph. (Total) for providing samples and/or information.
DS TECNALIA Publications
RD 7 sept 2024