Beneficiation Study of Alaskite through Flotation
The present work aimed to verify the possibility of using froth flotation to separate the constituent minerals of an alaskite rock waste having as the main minerals quartz and feldspar. Three stages of tests have been carried through. In the first stage was used an amphoteric collector for flotation,diaminedioleate, at pH 2 and, after analyzing the final products, a very poor selectivity was observed. During the second stage of tests, different collectors that are normally used for feldspar flotation as amines, sulfonates and soybean oil were employed. Once more, it was not possible to reach reasonably selective results. In the third stage, a salt of etheramine was used for collecting the feldspar and hydrofluoric acid was utilized for controlling the pH. A simulation of three flotation steps (rougher, cleaner and recleaner) permitted to attain a good selectivity in the flotation process. A concentrate with a silica content of 96.6% was obtained. The low concentrate content of alkalis totalizing 0.52% and a feldspar recovery of 96.5% to the tailings, represented by the high content of Na, K, and Al2O3 in the tailings, demonstrated that the concentrate was made up mostly of quartz.
Alaskite Flotation Collectors
R. M. Papini A. C. Araujo A. E. C. Peres P. R. M. Viana
Federal University of Minas Gerais, Brazil
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1337-340
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）