| Popis: |
The pH is a critical variable and influences the surface state of the float mineral particles and the flotation efficiency. Jamesonite is a sulphosal of lead and antimony with iron content Pb4FeSb6S14. In this research, the study of the surface state of jamesonite was carried out by means of infrared spectroscopy of particles obtained in flotation without a collector in acid, neutral and alkaline medium. In an alkaline medium, the flotation of the mineral decreases or is depressed, mainly due to the oxidation of the surface iron forming iron oxyhydroxide, α-FeOOH goethite, considered as a hydrophilic species, as well as the division of the main sulfate band indicating the formation of metal sulfates. Meanwhile, when the flotation is carried out without a collector at pH 5.9 and 7.8, a 70% w / w recovery is achieved, and the absorption bands of the covalently bonded species are significantly attenuated. |
