Adapter for converting an oil burner head for burning of pulverized coal

In a burner head means forming a primary air passage in the burner head including a portion of generally circular configuration in cross-section having a plurality of openings uniformally circularly disposed about its periphery, and a manifold effective to envelope said primary air passage means, the manifold having inlet means for connection to a source of pulverized coal and air, a plurality of internal coal and air passages downstream of the inlet effective to divide incoming coal and air into a plurality of discrete streams thereof, and a manifold coal and air outlet opening from each coal and air passage, the manifold outlet openings each being in communication with a duct means having an outlet discharging into one of said openings about the periphery of the primary air passage means.