EXCLUSION METHOD OF ACIDIC OXYGEN ELEMENTS FROM FE-NI,FE-CO OR FE-NI-CO ALLOY

摘要

Method for refining a Fe-Ni Fe-Co or Fe-Ni-Co series alloy steel to remove acidic oxide forming elements of Mo, W, Cr, Al, Ti, Nb, Zr, P, S etc. in which the alloy steel is melted, subjected to oxidn. and deslagging treatment for making a part of the acidic oxide forming elements to acidic oxide and forming peroxide molten steel while deslagged to remove part of the acidic oxides. The molten steel is blown with a powdery or granular mixt. slag forming agent of glass and 1 carbonate of Na, Ca, K, Mg, and Ba to form basic slag of basicity 1.5.