1996 Volume 36 Issue Suppl Pages S30-S33
The activities of calcium in the CaOsatd.-Ca-CaX2 fluxes (X: Cl, Br, I) were measured as a function of the calcium composition at 1 473 K by equilibrating these fluxes with a solid zirconium plate. The activities decreased in the order CaCl2, Cal2 and CaBr2 at the same calcium fraction of these fluxes. The observed activities are compared with those estimated using binary phase diagrams of the Ca-CaX2 system. The possibility of the removal of phosphorus and the tramp elements such as arsenic, antimony, bismuth, lead and tin from carbon saturated iron using calcium-calcium halide fluxes is discussed.