Research on Beneficiation of a High Iron Potash Feldspar Ore
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 K20 9.75% and Na20 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 K20 13. 01%, Na20 2.18% and 0.17%Fe_2O_3.