Experimental research on gravity-magnetic-flotation process of feldspar ore from Pingjiang

Gravity，magnetic and flotation experiment have been carried out to research the effect of different union process on the whiteness and iron content of feldspar concentrate.The results showed that：through the magnetic-gravity separation technology，the feldspar concentrate with productivity of 69.52%，content of 0.008%，whiteness of 70.32% was obtained；through the gravity-magnetic separation technology，the feldspar concentrate with productivity of 74.51%，Fe₂O₃ content of 0.025%，whiteness more than 65% was obtained.Comparing with magnetic-gravity separation technology，the later could get the concentrate with higher yield and meet the standard of feldspar for ceramic.