Abstract: For a potassium feldspar ore in Fujian, first using high gradient magnetic separator for removal of iron, then under the acidic conditions (pH=2~3), obtained feldspar concentrates containing K₂O 9.75% and Na₂O 4.36% afte feldspar-quartz flotation separation. In order to further improve the quality of potassium feldspar, using sodium chloride as inhibitors, realize the potassium feldspar and albite separation, eventually obtaining potassium feldspar concentrates including K₂O 13. 01%, Na₂O 2.18% and 0.17%Fe₂O₃.

Key words: Potassium feldspar, Albite, Magnetic separation, Flotation