METHOD FOR ADDING FERROALLOY TO MOLTEN STEEL

摘要

PURPOSE:To melt early and uniformly a ferroalloy in molten steel by moving a pipe immersed in the molten steel up and down while or after adding the ferroalloy to the molten steel through the pipe. CONSTITUTION:A ferroalloy is added to molten steel in a ladle through a pipe immersed in the molten steel. At this time, the pipe is moved up and down while or after adding the ferroalloy. The pipe is moved up and down in the range of 2/100-2/3 of the depth of the molten steel, and the movement is repeated twice or more.