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STUDY ON MECHANISM OF mixed collectors IN SEPARATION OF FELDSPAR AND QUARTZ

Journal of Wuhan University of Technology(Materials Science) 1994年第1期9卷 134-137页

作者：孙宝岐唐甲莹陈贤国 Wuhan Univ of Tech.

Acidless and fluoless flotation is a new method for sepa-rating feldspar from quartz at the natural pH value of tap water in the ab-sence of any acid and fluoride and other inorganic reagents. The paper discusses the mechanism of mixed collectors in separation of feldspar and quartz by means of mono-mineral flotation experiment, determination of surface-tension, analisis of fluorescence, infrared spectrum, Auger elec-tron sepectrum , and quantum chemistry calculation.

关键词： feldspar quartz flotation mixed collectors

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Removal of dolomite and potassium feldspar from apatite using simultaneous flotation with a mixed cationic-anionic collector

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International Journal of Mining Science and Technology 2023年第6期33卷 783-791页

作者： Haoyong Yu Yangge Zhu Liang Lu Xiaoxing Hu Songqing Li State Key Laboratory of Mineral Processing Science and Technology BGRIMM Technology GroupBeijing 102628China

This study aims to investigate the effect of a cationic-anionic mixed collector(dodecyltrimethyl ammonium bromide/sodium oleate(DTAB/NaOL)on the selective separation of apatite,dolomite,and potassium ***,several experimental methods,including flotation experiments,zeta-potential detection,microcalorimetry detection,XPS analysis and FTIR measurements,were *** flotation tests showed that dolomite and potassium feldspar can be successfully removed from apatite simultaneously when the molar ratio of DTAB to NaOL was 2:1 with pH ***-potential and microcalorimetry detection suggested that NaOL and DTAB were adsorbed on the surface of dolomite and potassium feldspar respectively,and part of NaOL and DTAB formed co-adsorption on the surface of potassium feldspar to enhance the floatability of potassium *** XPS and FTIR spectra analysis demonstrated that the cationic collector,DTAB,was first adsorbed on the surface of potassium feldspar through electrostatic attraction in the DTAB/NaOL mixture ***,the anionic NaOL collector and cationic DTAB collector form an electron neutralisation complex,thereby resulting in co-adsorption on the surface of potassium *** was chemically reacted and adsorbed on dolomite surface,but almost no collector was adsorbed on apatite ***,the adsorption models of different collectors on mineral surface were obtained.

关键词： Flotation mixed collectors Apatite Potassium feldspar Dolomite

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