...脱磷剂；磁选；脱磷率[gap=1416]Key words: high phosphorus oolitic hematite; direct reduction roasting; dephosphorizing agent; magnetic separation; dephosphorization rate..
The dephosphorizingagentcontaining 20 percent LD slag wasoptimizedby thepowderinjectionexperiments in laboratory, the dephosphorizationratioreached 70 percent.