Flotation separation of quartz and dolomite from collophane using sodium N-dodecyl-β-amino propionate and its adsorption mechanism

Li, Jie; Guang-hua, Nie; Li, Jiaxin; Zhu, Zhixiong; Wang, Zhenggang

doi:10.1016/j.colsurfa.2022.128586

Cited by 16 publications

(3 citation statements)

References 49 publications

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“…Additionally, peaks observed at 1497 cm −1 and 1585 cm −1 are associated with the vibrations of the C=C bond within the benzene ring belonging to DSA [37,38]. Furthermore, the spectrum of DSA also shows peaks at 2926 cm −1 and 2872 cm −1 , associated with the stretching vibrations of the -CH 3 and -CH 2 groups in alkanes [22,39]. The FTIR analysis of DSA-treated cassiterite reveals notable changes in the vibrational absorption peaks.…”

Section: Ftir Analysismentioning

confidence: 93%

5-Dodecylsalicylaldoxime as a Novel Collector in Cassiterite Flotation: Performance and Mechanism

Sun,

Qiao,

Cao

et al. 2024

Minerals

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Hydroxamic acid and fatty acid collectors are commonly used in cassiterite flotation but face issues like poor selectivity, high dosage, and strict requirements on ore composition and grinding fineness. This study investigates the collecting performance of a novel flotation reagent, 5-dodecylsalicylaldoxime (DSA), in cassiterite flotation. DSA exhibits remarkable selectivity, achieving an impressive 82.5% recovery of Sn at a concentration of only 9 × 10−5 mol/L in single mineral flotation tests. Moreover, DSA significantly outperforms benzohydroxamic acid (BHA), enhancing Sn recovery by 33.55% in artificially mixed ore flotation experiments. In the flotation test of a copper–tin polymetallic ore, compared with the BHA flotation effect, the recovery rate of DSA increased by 12.29% when the Sn grade remained basically unchanged. Analyses such as zeta potential, FT-IR, and XPS indicate that DSA’s superior collecting performance stems from its stable adsorption onto cassiterite surfaces through a chelating ring formation, resembling the adsorption mechanism of hydroxamic acid collectors. Furthermore, DSA’s larger cluster size in the solution compared to BHA contributes to its enhanced selectivity and collectability. Overall, DSA emerges as a promising alternative to traditional cassiterite flotation collectors, offering a combination of enhanced selectivity, lower dosage requirements, and robustness in complex ore systems.

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Section: Ftir Analysismentioning

confidence: 93%

5-Dodecylsalicylaldoxime as a Novel Collector in Cassiterite Flotation: Performance and Mechanism

Sun,

Qiao,

Cao

et al. 2024

Minerals

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“…Flotation pre‐enrichment and strong acid leaching were traditional methods used to treat phosphorite 14–20 . Under acidic conditions, the difference in floatability between Fap and Dolo increased 21 . Under this condition, part of Dolo can be removed by reverse flotation so that Fap in phosphorite can be preconcentrated; however, Dolo cannot be completely removed by flotation 22,23 .…”

Section: Introductionmentioning

confidence: 99%

Selective removal of dolomite from rare earth element‐bearing phosphorite by flotation and leaching and the adsorption mechanism of agents on mineral surfaces

Xie

2023

Surface & Interface Analysis

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The rare earth elements (REEs)‐bearing phosphorite was a potential REE resource, which contained all REEs except polonium, among them lanthanide, cerium, neodymium, and yttrium were especially enriched. REEs mainly occurred in fluorapatite (Fap) and had a high positive correlation with phosphorus content. By adopting a new green environmental fatty acid collector GJBW and through one roughing and one refining reverse flotation process, all REEs were pre‐enriched. The flotation concentrate was further leached with citric acid (CA), and all REEs were further enriched. The results of X‐ray diffractometer (XRD), Fourier transform infrared spectroscopy (FT‐IR), and X‐ray photoelectron spectroscopy (XPS) showed that dolomite (Dolo) was removed and Fap was enriched in phosphorite, the selective enrichment of phosphorus and REEs was realized. Density functional theory (DFT) calculation revealed the mechanism of deep purification of REEs and phosphorus in phosphorite by CA at the micro‐scale. The results showed that the number and strength of bonding between CA and Dolo (104) surface were greater than that between CA and Fap (001) surface, and CA was more easily adsorbed on Dolo (104) surface. Under the same conditions, Dolo in phosphorite was more easily leached by CA, while Fap was further enriched. This process provided a theoretical basis for the comprehensive recovery of REEs and phosphorus from phosphorite.

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“…Because they have similar crystal structures and surface physicochemical properties, their flotation properties are identical, and achieving the flotation separation of the two has been one of the challenges in the mineral processing community [16][17][18]. Amine traps are the main flotation agents for silicate minerals at this stage [19]. Li et al [20] synthesized a new amine trap and investigated the trapping performance of the new web on white mica and quartz.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Modified Ether Amine Agents in Petalite and Quartz Flotation Systems under Weak Alkaline Conditions

Zhou

Chen

et al. 2023

Minerals

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To investigate the flotation separation behavior of petalite and quartz, various methods were employed in this study. These included micro-flotation experiments, a contact angle analysis, zeta potential analysis, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) to explore the separation mechanism of a modified ether amine reagent (L0-503) for petalite and quartz under weakly alkaline conditions. The micro-flotation test results indicated that the modified ether amine collector had a higher collecting ability for quartz than for petalite, with a maximum recovery rate of 93.2% for quartz and a recovery rate consistently below 14% for petalite in the presence of L0-503. This indicates that the modified ether amine reagent can be used as a reverse flotation agent for separating petalite and quartz. The separation mechanism results showed that the modified ether amine reagent had a significantly higher adsorption capacity for quartz than for petalite due to a strong reaction between the quartz and the secondary amine (-NH=) on the modified ether amine collector. Additionally, the electrostatic force and hydrogen bonding between the reagent and quartz further enhanced the adsorption, while no reaction occurred between the reagent and petalite.

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Flotation separation of quartz and dolomite from collophane using sodium N-dodecyl-β-amino propionate and its adsorption mechanism

Cited by 16 publications

References 49 publications

5-Dodecylsalicylaldoxime as a Novel Collector in Cassiterite Flotation: Performance and Mechanism

5-Dodecylsalicylaldoxime as a Novel Collector in Cassiterite Flotation: Performance and Mechanism

Selective removal of dolomite from rare earth element‐bearing phosphorite by flotation and leaching and the adsorption mechanism of agents on mineral surfaces

Mechanism of Modified Ether Amine Agents in Petalite and Quartz Flotation Systems under Weak Alkaline Conditions

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