Adsorption study of 3- tetradecylamine propyl amidoxime onto rhodochrosite surface: Implications for rhodochrosite-calcite flotation separation

Ouyang, Liaoyuan; Huang, Zhiqiang; Wang, Hongling; He, Guichun; Yu, Xinyang; Burov, Vladimir E.; Poilov, Vladimir Z.; Li, Fangxu; Liu, Rukuan; Li, Wenyuan; Shuai, Shuyi; Zhang, Shiyong; Cheng, Chen; Fu, Weng

doi:10.1016/j.colsurfa.2023.132469

Cited by 3 publications

(1 citation statement)

References 43 publications

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“…Contact angle measurements are an important method for investigating mineral flotation properties [ 45 ]. The smaller the contact angle, the more hydrophilic the mineral surface is, and the more difficult it is to float the mineral [ 46 ]. The effects of the depressant β-CD and the collector SDS on the surface contact angle of barite and quartz are shown in Fig 8 .…”

Section: Resultsmentioning

confidence: 99%

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Li,

Xie,

et al. 2024

PLoS ONE

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High-density waste drilling fluid contains an abundance of recyclable weighting reagents, direct disposal can pollute the environment. In this paper, the primary mineral composition of a high-density waste drilling fluid from a well in the southwest oil and gas field was analyzed. This paper proposes β-cyclodextrin (β-CD) as a depressant for the recovery of barite from waste drilling fluid. The recovery process was investigated through inverse flotation experiments, and the mechanism was analyzed using zeta potential, contact angle analysis, and FTIR. The flotation experiments showed that under the SDS flotation system, when the pH was 9.0 and the amount of depressant β-CD was 900 g/t, the barite recovery and density reached the highest values, which were 87.41% and 4.042 g/cm3, respectively. Zeta potential experiments, contact angle analysis, and FTIR analysis indicate that β-CD adsorbed onto barite through enhancing the hydrophilicity of barite, electrostatic force adsorption, and strong adsorption, which could not be displayed by SDS through competitive adsorption. Furthermore, β-CD exhibited a selective inhibitory effect on barite and enabled reverse flotation. The mechanism model of the flotation separation process was established.

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Section: Resultsmentioning

confidence: 99%

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Li,

Xie,

et al. 2024

PLoS ONE

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Investigation into the impact of Mn2+ and its interaction with calcite in the flotation of rhodochrosite

Cui,

Zhou,

et al. 2024

Separation and Purification Technology

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New Insights into the Depressive Mechanism of Sodium Silicate on Bastnaesite, Parisite, and Fluorite: Experimental and DFT Study

Wang,

Lu,

Cao

et al. 2024

Minerals

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The surface properties of bastnaesite and parisite are similar to their associated gangue mineral, fluorite, which makes the flotation separation of these two rare earth minerals from fluorite one of the industry’s most significant challenges. This study systematically investigates the inhibitory effects and mechanisms of sodium silicate (SS) on bastnaesite, parisite, and fluorite in an octyl hydroxamic acid (OHA) collector system through flotation experiments, various modern analytical methods, and DFT simulations. The flotation test results indicate that the inhibition effects of SS on the three minerals are in the order: fluorite > parisite > bastnaesite. Detection and analysis results indicate that SS forms hydrophilic complexes with Ca atoms on the surfaces of fluorite and parisite, enhancing surface hydrophilicity and inhibiting OHA adsorption, but its impact on bastnaesite is relatively minor. DFT simulation results show that OHA forms covalent bonds with metal ions on mineral surfaces, favoring five-membered hydroxamic-(O-O)-Ce/Ca complexes, and reacts more strongly with Ce atoms than Ca atoms. SS primarily forms covalent bonds with metal atoms on mineral surfaces via the SiO(OH)3− component, and OHA and SS compete for adsorption on the mineral surfaces. OHA has a stronger affinity for bastnaesite, whereas SS shows the highest affinity for fluorite, followed by parisite, and the weakest affinity for bastnaesite.

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Adsorption study of 3- tetradecylamine propyl amidoxime onto rhodochrosite surface: Implications for rhodochrosite-calcite flotation separation

Cited by 3 publications

References 43 publications

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Investigation into the impact of Mn2+ and its interaction with calcite in the flotation of rhodochrosite

New Insights into the Depressive Mechanism of Sodium Silicate on Bastnaesite, Parisite, and Fluorite: Experimental and DFT Study

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