{HEAD ~ The novel lance} of the present invention may be used with a conventional axisymmetric burner or with {TAIL ~ a nonaxisymmetric burner} preferably having a shape similar to the shape of the lance to thereby generate a curved or flat flame which is more readily adapted to effect uniform heat transfer 
{ HEAD ~ The novel lance } of the present invention may be used with a conventional axisymmetric burner or with { TAIL ~ a nonaxisymmetric burner } preferably having a shape similar to the shape of the lance to thereby generate a curved or flat flame which is more readily adapted to effect uniform heat transfer
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