8. Conclusion
There are three main types of torch (or techniques) for generating thermal plasmas:
inductively coupled radiofrequency plasmas ;
blown-arc torches ;
transferred bows.
Commercially available radio-frequency torches range from 30 to 400 kW. Their main advantages are :
to operate with almost all gases, including oxidizing gases;
have flow velocities 10 to 20 times lower than those of blown-arc torches and, therefore, residence times 10 to 20 times longer;
no worn electrodes to pollute plasma gases.
These torches are mainly used for particle spheroidization-purification, the projection of large...
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Conclusion
Published by T.I. Dans les Techniques de l'Ingénieur
- (1) - FAUCHAIS (P.) - Plasmas thermiques : aspects fondamentaux. - . Base documentaire « Convertisseurs et machines électriques » (2005).
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The Ultimate Scientific and Technical Reference