STUDY ON DEPHOSPHORIZATION OF BLAST FURNACE FERROMANGANESE

Ceneral situation in dephosphorization of manganese alloys at home and abroad is introduced,The forms of phosphor existiug in the ferromanganese is researched by means of X-Ray and scanning electron microscopy.It is cons- idered that the mixture of CaO-CaCl_2-manganese ore is a better dephosphoriz- ing agent for blast furnace ferromanganese.The degree of dephosphorization can reached to 20.45-35,55%with the dephosphorizing agent guantity correspon- ding to 10-20%of the ferromanganese melt by weight and stirring time of 5 minutes at 1420℃