The role of alkaline earth cations in flotation separation of quartz from feldspar

Adsorption mechanism of mixed cationic/anionic collectors in feldspar-quartz flotation system

“…A similar reagent scheme consisting of a combined cationic-anionic collector, N-tallow-1,3-propylene diamine/dioleate, was also applied successfully on feldspar ores [10,11]. Several other studies without involving fluoride ions are limited to either single mineral flotation or artificial mixtures [12][13][14][15]. There are no detailed fundamental investigations to elucidate the role of mixed collectors in selective feldspar flotation besides the studies reported on mixed surfactants adsorption on other mineral systems [16][17][18].…”

The Effects of Calcium Ions on the Flotation of Sillimanite Using Dodecylammonium Chloride

“…In their study, Ca 2+ ions exhibited complex and interesting features of adsorption and ion exchange patterns, which proved beneficial in the separation of individual feldspar minerals. In the flotation of microcline, quartz as the gangue could be activated in the presence of Ca 2+ and Mg 2+ ions, but microcline did not respond to flotation with these cations [16]. Burdukova et al [17] concluded that the presence of calcium ions greatly enhanced the adsorption density of carboxymethyl cellulose on talc, which was attributed to the increased concentration of [CaOH] + on the mineral surface as well as the increased amount of coiling of the carboxymethyl cellulose macromolecules due to their reaction with Ca 2+ ions.…”

Desempenho De Coletores Aniônicos De Minerais Portadores De Ferro Na Concentração De Feldspato Por Flotação

“…Na Turquia, a separação entre feldspatos e silicatos é realizada por meio de flotação reversa de mica e silicatos em que primeiramente a mica é flotada utilizando amina como agente coletor em pH entre 2,5 e 3,5. Posteriormente, flota-se silicatos portadores de ferro com coletores do tipo sulfonatos em pH 3-4 (EL SALMAWY et al, 1993 …”