Importance

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Abstract

An apparatus includes a tuyere including a tubular chamber having an internal wall defined by a mandrel; a plasma torch assembly including a torch positioned to inject hot gas into the tuyere and having a tubular structure that extends along an axis of the chamber; the plasma torch assembly further including a shroud head configured to inject shroud gas between the internal wall of the chamber and the tubular structure of the torch; a pipe positioned around at least a portion of the mandrel forming a plenum at least partially encircling the mandrel; and a plurality of nozzles in the chamber internal wall configured to inject a combustible material from the plenum to a space between the internal wall of the chamber and the tubular structure of the torch.

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First Claim