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- W3034015087 endingPage "106492" @default.
- W3034015087 startingPage "106492" @default.
- W3034015087 abstract "Froth flotation is widely used as an effective method for separating apatite from dolomite. However, it is of difficulty to realize the efficient separation of apatite and dolomite using the traditional fatty acid collectors without any depressants due to their similar physicochemical properties. In this work, the depression performance of poly (acrylic acid-co-maleic acid) sodium salt (PAMS) acting as a new depressant was evaluated via the flotation experiments, when sodium oleate (NaOl) was employed as the collector. The results from flotation experiments illustrated that PAMS effectively depressed the dolomite flotation whereas it exhibited weak influences on the floatability of apatite. It was also found that the reagent scheme of 14 mg/L PAMS and 100 mg/L NaOl could effectively remove dolomite from apatite at pH 9.00. Moreover, the adsorption mechanism of PAMS onto the two minerals was uncovered through the surface analyses. The analyzed results indicated that the interaction of PAMS with magnesium ions exposed to dolomite played a vital part in the selective adsorption of PAMS onto dolomite. Magnesium, as a major component of dolomite rather than apatite, enhanced the chemisorption of PAMS onto dolomite. Furthermore, the larger pre-adsorption of PAMS onto dolomite than apatite significantly led to the much less adsorption of NaOl on the dolomite surface, thereby reducing the hydrophobicity of dolomite in NaOl system and intensively depressing the dolomite flotation. Therefore, PAMS can be utilized as a potential depressant for removing dolomite from apatite by direct flotation." @default.
- W3034015087 created "2020-06-12" @default.
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- W3034015087 date "2020-09-01" @default.
- W3034015087 modified "2023-10-16" @default.
- W3034015087 title "Improving flotation separation of apatite from dolomite using PAMS as a novel eco-friendly depressant" @default.
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- W3034015087 doi "https://doi.org/10.1016/j.mineng.2020.106492" @default.
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