On the Dephosphorization of Hot Metal in the Ladle
溶銑の取鍋内脱燐法

Kantaro SASAKI, Yoshimichi OHKITA, Takami IKEDA, Takashi OKAZAKI, Tohru MATSUO, Akira KAWAMI
1977 Tetsu to hagane  
Synopsis: Dephosphorization of hot metal in the ladle was investigated by mechanical stirring method with the dephosphorizing agent consisting of LD slag and Fe2O3 powder. The experiments were carried out both with a laboratory scale apparatus and 45t industrial ladles. The following results have been obtained; (1) Using LD slag with Fe2O3 powder, the phosphorus level of hot metal can be reduced to 20% to 40% of the initial content after 40 minutes treatment even when the slag is acidic. (2)
more » ... ing the treatment, the extent of decarburization is small, although silicon and manganese are oxidized and removed from the hot metal. (3) The low phosphorus steel, with less than 0.010%P, can be easily obtained in LD vessels starting with the dephosphorized hot metal.
doi:10.2355/tetsutohagane1955.63.12_1801 fatcat:w5e2ncirmjc47go72im3ghm7zq