INVESTIGADORES
BOHE Ana Ester
congresos y reuniones científicas
Título:
A chlorination process applied to the recovery of aluminum and SiC reinforcement from an aluminum-matrix composite
Autor/es:
HORACIO E.P. NASSINI; ANA ESTER BOHÉ
Lugar:
San Diego, California, USA. Aug. 27-31, 2006
Reunión:
Simposio; SOHN INTERNATIONAL SYMPOSIUM ON ADVANCED PROCESSING OF METALS AND MATERIALS: PRINCIPLES, TECHNOLOGIES AND INDUSTRIAL PRACTICE; 2006
Institución organizadora:
kONGOLI- TMS
Resumen:
Chlorination process is an attractive and efficient method for the metal recovery from complex
materials. The process that is performed at high temperatures, allows converting all the metals
contained in the material into their respective chlorides which are further separated in a selective
way.
Aluminum metal matrix composites with discontinuous ceramic reinforcement of short fibers,
whiskers, and particles have been gaining wide acceptance as an important engineering material
in automotive, aerospace, and electronic industries. Since the ceramic reinforcements are still
quite expensive and contribute significantly to the final cost of composite materials, the
feasibility of their recovery from the manufacturing scrap and further recycling is a factor of
increasing economic interest.
In the present work, a theoretical and experimental study is given for the recovery of Al2O3 and
SiC particles and short fibers from three commercially available aluminum-matrix composites
produced by molten metal mixing route. The process consists of transforming the constituents of
metallic alloy matrices in gaseous chlorides that are dragged by the gaseous stream, while the
ceramic reinforcement remains as a solid residue in the reaction bed.