A method for introducing an additive material for molten metal, and a method for introducing an additive material for molten metal

摘要

1. A method for introducing an additive into a container containing molten metal, the method comprising: a nozzle disposing step of disposing a nozzle above molten metal contained in the container; and an additive material transporting step of transporting the additive into the nozzle by a carrier gas, Wherein an area of the injection port is larger than an area of the introduction port in the nozzle. By this injection method, it is possible to supply the additive material uniformly to the surface of the molten metal contained in the container, and to achieve both the sufficient addition effect by the additive material and the reduction of the additive material usage amount.