Injector device for blowing oxygen-rich gases on or in, in a metallurgical unit or melting vessel, and electric arc furnace

摘要

The invention relates to an injector apparatus (1) for the pyrometallurgical treatment of metals, molten metals and/or slags in a metallurgical unit or melting vessel, said apparatus comprising an injector device (2, 3) for producing a high-velocity gas jet (5) from an oxygen gas jet (6) and an ignited combustible gas/air mixture jet (7), in which the injector device (2, 3) comprises a de Laval nozzle element (8) for producing the oxygen gas jet (6), said de Laval nozzle element being arranged in a nozzle head part (41), and in which the combustible gas/air mixture (7) can be mixed by means of a mixing element (9) for mixing combustible gas (32) and air (36), wherein the de Laval nozzle element (8) and the mixing element (9) are arranged jointly along the center longitudinal axis (13) of the injector device (2, 3), one behind the other, such that they can be detached from one another.