氟硅酸铵在赤铁矿与含铁硅酸盐浮选分离中的选择性-武汉体育学院学报.pdfVIP

25 4 矿　冶　工　程 Vol.25 №4 2005 08 MINING AND M TALLURGICAL NGIN RING August 2005 梅光军, 余　军, 葛英勇, 余永富 ( , 430070) 　:, (NaFe SiO ) 2 6 。, , pH=4 ～5 。 , (NaOL)(SDS)。 ζ , 。 :;;;; :TD923 :A :0253-6099(2005)04-0024-03 Selective Depressive Action of Ammonium Hexafluorosilicate in Flotation Separation of Hematite and Iron-containing Silicate MEI Guang-jun, YU jun, GE ing-ong, YU Yong-fu (S chool of Resources and Environmental Engineering , Wuhan University of Technology , Wuhan 430070, Hubei, Ch ina ) Abstract:The depressive behavior of (NH )SiF on iron-containing silicate gangue, aegirine, in hematite flotationwith sodi- 4 2 6 um oleate as collector was studied.The flotation test results for single mineral show that (NH4 )2 SiF6 has a better depressive action on aegirine than water glass and conventional fluoride such as NaF, HF, and has a optimum selectivit while in a weak- l acidic medium of pH=4 ～5.The results obtained from the flotation separation with artificial mixtures show that the com- bined collector of sodium oleate (NaOL)and sodium dodec l sulfonate (SDS)can improve the flotation performance evidentl . The selective depressive mechanism of (NH4 )2 SiF6 for aegirine in flotation was also primitivel discussed b zeta potential tests, measuring adsorption amount of sodium oleate on the mineral surface, and anal zing infrared spectrum. Key words:ammonium hexafluorosilicate;hematite;iron-containing silicate;flotation;separation 　　, [5] 。, , 、 。 ,