| 摘要 |
<p>A heater assembly comprising cathodic plasma generators for generating a column of plasma, a plurality of anodic plasma torches the outlets of which are symmetrically disposed about the axis of the column and a circuit for energising the generators and torches, the arrangement being such that in operation a current is passed simultaneously between the generators and each of the torches by way of the column and jets of plasma from the outlets which merge with the column. A method for effecting the chemical or physical modification of a particulate material, in which the material is heated in a high enthalpy zone including a plasma column through which current passes from cathodic plasma generators simultaneously to each of a plurality of anodic plasma torches the outlets of which are symmetrically disposed about the axisof the column, the zone also including the region of confluence of the column with jets of plasma from the torches.</p> |
