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Progress in Plasma Processing of Materials, 1997

ISBN 印刷:
1-56700-093-2

Development and First Results of an Immersed Plasma Arc Heater for Environmentally Compatible Processing

K. Peters
Institut fur Industrieofenbau und Warmetechnik RWTH Aachen, D 52074 Aachen, Germany

M. Kottowski
Rubensstr. 12, D 40237 Dusseldorf, Germany

H. Wilhelmi
Institut fur Industrieofenbau und Warmetechnik RWTH Aachen, D 52074 Aachen, Germany

E. Steinmetz
Haus der Technik, Hollestr. 1, D 45127 Essen, Germany

要約

An immersed plasma arc heater was developed fulfilling the constructive objectives: i) no cooling devices immersed in the melt ii) free positioning of the immersed arc iii) arc length independent from electrode position. The process has been successfully tested both on a laboratory (10 kg melt) and technological scale (400 kg melt) for melting and heating metal melts and other electrical conductive materials. The technological plant is designed for melts up to 4 t and an electric power consumption of 600 kW. On laboratory scale (10kW) preliminary investigations on recovering aluminium have been performed.