The condition of Main technology:

　1), commom granularity:-40 mesh 100%, -200 mesh <8%

　2), seeming: particles are dark grey, the surface does not rust and incidentals

　3), chemical composition(wt%):

TiO2	FeO	C	S	P
≥57.0	≤7.50	≤0.20	≤0.030	≤0.030