2013 Volume 85 Issue 6 Pages 343-347
In order to control the manganese content in molten cast iron, the effect of manganese removal by Na2S-FeS flux was investigated in the temperature range 1573-1673K.
Manganese removal reaction occurred in a very short time, and no effects of temperature on manganese removal efficiency were observed. However, the sulfur content in molten cast iron increased with increasing temperature, and also changed with changes in the flux composition and flux amount. In addition, the manganese distribution ratio (manganese content in flux (%Mn) / manganese content in molten cast iron [%Mn]) improved from 10 to 115 according to increasing sulfur content in molten cast iron. These results indicate that to improve manganese removal efficiency, it is desirable to add FeS within the allowed sulfur content in molten cast iron.
