Abstract: The flame established in the combustion chamber is short in the direction of material flow and of tornado configuration due in part to swirling in spiral fashion of primary air bearing pulverized coal particles along a conduit together with swirling in spiral fashion of secondary or combustion air along a conduit which is concentrically arranged with respect to the primary air and coal particle conduit so that these two flame components are dispersed in a transversely outward manner due to centrifugal force and for wall jet attraction and by this means the longitudinal length customarily necessary for high temperature pulverized coal burners is substantially shortened and the temperature at which combustion may take place is substantially reduced.