Abstract
The studies have been made of the manganese distribution between carbon-saturated iron melts and soda- and lime-based fluxes. The manganese distribution ratios in the Na2O-SiO2 system and in the CaF2-CaO system were found to decrease with increase of the contents of Na2O and CaF2, respectively. The relationship between the manganate capacity CMn[=(%Mn)/{aMn·aO}] and the optical basicity Λth has been derived. It was found from the previous data on the manganese distribution ratios between liquid iron and MgO-saturated CaO-FetO-SiO2-MnO slags that the values for CMn, were linearly correlated to Λth or the mole fractions of slag compositions. The oxygen potentials in the practical operations of hot metal pretreatment have been estimated by use of these relations.
