Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Rate of Transfer of Manganese from MnO-(CaO+FetO+MgO)-SiO2 Slag to Liquid Iron
Nobuya SHINOZAKIKatsumi MORIYasuji KAWAI
Author information
JOURNALS FREE ACCESS

1982 Volume 68 Issue 1 Pages 72-80

Details
Abstract

The rate of transfer of manganese from slag to liquid iron was investigated by measuring the change of manganese and oxygen contents of liquid iron under MnO-(CaO+FetO +MgO)-SiO2 slag in a magnesia crucible. Experiments were carried out with slags of basicity from 0.66 to 1.19 at 1 600°C.
The results are as follows :
1) The equilibrium between liquid iron and slag was attained after about 30 min.
2) The rate of reaction and manganese content of final liquid iron increased with decrease of oxygen potential of the system and with increase of manganese oxide content of initial slag.
3) The experimental results were interpreted by the rate equation derived from the assumptions that the reaction rate was controlled by the transfer of Mn, O, (MnO) and (FeO) in the boundary layers and that the distribution-ratio of manganese and oxygen varied with proceeding of the reaction. Values of mass-transfer-coefficient of (MnO) were nearly the same with those obtained in the previous study on the rate of oxidation of manganese in liquid iron at the same temperature.

Information related to the author
© The Iron and Steel Institute of Japan
Previous article Next article
feedback
Top