Device for transferring pulverulent materials, and application to the feeding of a molten metal with pulverulent material

A device for transferring pulverulent materials, comprising:

• an enclosure (3) in which the pulverulent material to be transferred is stirred and pressurized, at the lower end (7) of which enclosure a pipe (8) conveys said material toward its place of destination;
• a gas inlet (14, 15), and in particular a compressed air inlet, emerging in the pipe (8), and the inflow being able to ensure the progress of the material toward said place;
• characterized in that at the level of the gas inlet (14, 15), said pipe (8) forms a nozzle (12), pointing in the direction of the flow of the material, said nozzle emerging into a second pipe (9), of substantially the same diameter as the first, and in that the gas inlet (14, 15) emerges at the lower end of the first pipe, outside the nozzle (12), said gas being introduced into the second pipe (9) by means of a plurality of through-orifices (20) made substantially in the same plane as the lower end (13) of the nozzle (12) and oriented substantially parallel to the direction of flow of the pulverulent material.