METHOD FOR BLOWING REFINING AGENT

摘要

PURPOSE:To prevent the clogging of a nozzle by feeding inert gas into the vicinity of a nozzle on a refining agent conveying path leading to the nozzle from the outside of the path under a prescribed pressure. CONSTITUTION:An immersion lance 3 is immersed in molten metal 2 in a vessel 1. The flow 5 of the inert gas is fed into a chamber 4 contg. The refining agent to send the refining agent to the lance 3 through a pipe 6 and to blow it into the molten metal 2. At the same time, the flow 7 of the inert gas is fed into the pipe 6 from the outside of the pipe 6.