Metals最新文献 - Book学术

Zirconium Phosphate Supported on Biochar for Effective Recovery of Rare Earth Elements from Tailwater: A Case Study of La3+ 生物炭负载磷酸锆对尾气中稀土元素的有效回收——以La3+为例

3区材料科学

Metals Pub Date : 2026-01-13 DOI: 10.3390/met16010084

Ning Zheng, Chenliang Peng, Xia Zhu, Weichang Kong, Yang Yang

{"title":"Zirconium Phosphate Supported on Biochar for Effective Recovery of Rare Earth Elements from Tailwater: A Case Study of La3+","authors":"Ning Zheng, Chenliang Peng, Xia Zhu, Weichang Kong, Yang Yang","doi":"10.3390/met16010084","DOIUrl":"https://doi.org/10.3390/met16010084","url":null,"abstract":"The efficient recovery of rare earth elements (REEs) from low-concentration mine tailwater is crucial for resource sustainability. In this study, a novel composite adsorbent, sesame stalk biochar-supported zirconium phosphate (sBC/ZrP), was synthesized for the selective adsorption and recovery of La3+ as a representative REE. The material was characterized using SEM-EDS, BET, XRD, FTIR, and XPS. Batch adsorption experiments were conducted to evaluate the effects of pH, coexisting ions, and the adsorption kinetics and thermodynamics. The results showed that sBC/ZrP exhibited a high adsorption capacity (up to 185.83 mg/g at 35 °C for 4 h) and strong selectivity for La3+, particularly in the presence of common competing cations, although Al3+ demonstrated significant interference. The adsorption process followed pseudo-second-order kinetics and the Langmuir isotherm model, indicating monolayer chemisorption, and was determined to be spontaneous and endothermic. The material maintained over 90% adsorption efficiency after five consecutive adsorption–desorption cycles. The mechanism primarily involved complexation of La3+ with the P-OH and Zr-O groups on the composite. This work demonstrates that sBC/ZrP is a highly efficient, stable, and reusable adsorbent with significant potential for the recovery of REEs from mining tailwater.","PeriodicalId":18461,"journal":{"name":"Metals","volume":"16 1","pages":"84-84"},"PeriodicalIF":0.0,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2075-4701/16/1/84/pdf?version=1768302922","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147909191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Removal of Hf(IV) Ions from Zr(IV) Ions in Sulfuric Acid Solution by Solvent Extraction with PC88A PC88A溶剂萃取法去除硫酸溶液中Hf（IV）和Zr（IV）离子

3区材料科学

Metals Pub Date : 2026-01-06 DOI: 10.3390/met16010067

Mingming Han, J. Song, Hongqian Sun, Xiaoru Zhang, Tao Qi

{"title":"Removal of Hf(IV) Ions from Zr(IV) Ions in Sulfuric Acid Solution by Solvent Extraction with PC88A","authors":"Mingming Han, J. Song, Hongqian Sun, Xiaoru Zhang, Tao Qi","doi":"10.3390/met16010067","DOIUrl":"https://doi.org/10.3390/met16010067","url":null,"abstract":"The study aimed to remove Hf(IV) ions from Zr(IV) ions in sulfuric acid solution using PC88A, investigating the extraction and separation of high-concentration zirconium (Zr) and hafnium (Hf) in such systems. Key factors, including solution acidity and SO42− concentration, were examined. Results showed that acidity affected the size of Zr/Hf ion clusters, and PC88A exhibits a higher extraction preference for Hf(IV) over Zr(IV), achieving a separation factor (βHf/Zr) of 4.56 at 4 mol/L H+. Adding SO42− reduced its separation efficiency for Zr and Hf. Combined with slope analysis and FT-IR spectroscopy, Hf extraction by PC88A followed cation-exchange and solvation mechanisms, with 3 PC88A dimers consumed per Hf ion. Stripping experiments demonstrated that 1 mol/L sulfuric acid selectively stripped Zr from the loaded organic phase. Extraction and stripping equilibrium curves were constructed, confirming that 3 stages of Hf(IV) extraction from the solution and 4 stages of Zr(IV) stripping from the loaded organic phase are needed: 3 theoretical stages (O/A = 1) enabled complete Hf extraction, while 4 stages (A/O = 3:1) achieved full Zr stripping. This work provides a basis for efficient Zr-Hf separation using PC88A.","PeriodicalId":18461,"journal":{"name":"Metals","volume":"16 1","pages":"67-67"},"PeriodicalIF":0.0,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2075-4701/16/1/67/pdf?version=1767697749","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Cryogenic Treatment on Microstructural Evolution and Tribological Properties of Ni-Co-Cr/SiC Nanocomposite Coatings 低温处理对Ni-Co-Cr/SiC纳米复合涂层显微组织演变及摩擦学性能的影响

3区材料科学

Metals Pub Date : 2025-11-29 DOI: 10.3390/met15121320

Xinyi Yuan, Rongcheng Sheng, Yizhe Du, Dengfu Chen, Mujun Long, Huamei Duan

{"title":"Effect of Cryogenic Treatment on Microstructural Evolution and Tribological Properties of Ni-Co-Cr/SiC Nanocomposite Coatings","authors":"Xinyi Yuan, Rongcheng Sheng, Yizhe Du, Dengfu Chen, Mujun Long, Huamei Duan","doi":"10.3390/met15121320","DOIUrl":"https://doi.org/10.3390/met15121320","url":null,"abstract":"To address the demands of modern high-speed and high-quality continuous casting production, depositing high-performance coatings on the surface of mold copper plates is critically important for extending the service life of continuous casting molds. To this end, a Ni-Co-Cr/SiC nanocomposite coating was developed, and cryogenic treatment was applied to further improve its hardness and wear resistance. This work systematically investigates the microstructural evolution and performance enhancement of the Ni-Co-Cr/SiC nanocomposite coating under different cryogenic treatment parameters, with special emphasis on the effects of treatment temperature on the coating’s microstructure, hardness, wear resistance, and adhesion to the substrate. The results demonstrate that decreasing the cryogenic treatment temperature and extending the holding time effectively refine the grains of the coating while simultaneously promoting the accumulation of microstrain and dislocation density. These changes lead to significant improvements in hardness, wear resistance, and interfacial bonding performance. Specifically, after direct immersion at −196 °C for 16 h, the coating reached a hardness value of 946.5 HV, and the wear rate was reduced to 0.032 mm3·(N·m)−1, representing only 54.6% of that of the untreated coating. The dominant wear mechanism transitioned to a mixed mode of abrasive wear and oxidative wear. Moreover, the cryogenic treatment enhanced the stability of the coating-substrate adhesion.","PeriodicalId":18461,"journal":{"name":"Metals","volume":"15 12","pages":"1320-1320"},"PeriodicalIF":0.0,"publicationDate":"2025-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2075-4701/15/12/1320/pdf?version=1764427399","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Organic Compounds on Iron Concentration in the Process of Removing Iron from Sulfur-Containing Sodium Aluminate Solution via Oxidation 含硫铝酸钠溶液氧化除铁过程中有机物对铁浓度的影响

3区材料科学

Metals Pub Date : 2025-10-29 DOI: 10.3390/met15111206

Jingyi Hao, Daxue Fu, Na Xu, Qing Han

{"title":"The Effect of Organic Compounds on Iron Concentration in the Process of Removing Iron from Sulfur-Containing Sodium Aluminate Solution via Oxidation","authors":"Jingyi Hao, Daxue Fu, Na Xu, Qing Han","doi":"10.3390/met15111206","DOIUrl":"https://doi.org/10.3390/met15111206","url":null,"abstract":"In this study, we investigate the effects of adding varying proportions of fulvic acid during the digestion of pyrite on the iron concentration in both dissolved and diluted sodium aluminate solutions. Based on the occurrence characteristics of iron in the solutions, oxygen was introduced into the diluted solution to examine its iron removal efficiency, and the influence of organic compounds in the solution on iron removal through oxidation was investigated. The results indicate that, during high-pressure digestion, organic compounds forms complexes with iron, disrupting the hydrophilic iron (or ferrous) hydroxide film formed on the pyrite surface, thereby accelerating its dissolution and leading to a sharp increase in sulfur and iron content in the leachate. After cooling and dilution (100 °C, Na2Ok 170 g/L), the iron content in the sodium aluminate solution continued to be influenced by organic compounds, showing a significant positive correlation. Oxygenation experiments for iron removal were performed using the diluted solution. Under conditions of an oxygen flow rate of 60 mL/min and an oxidation duration of 2 h (95 °C, oxygen partial pressure was 0.05 Mpa), the iron content (calculated as Fe2O3) decreased from 0.078 g/L to 0.021 g/L. Characterization and analysis of the iron removal precipitates revealed that the iron-containing minerals were primarily trivalent iron phases, such as goethite and hematite, with minimal ferrous iron content. Additionally, organic carbon also precipitated together with iron, which confirms the synergistic removal of iron and organic compounds. These findings demonstrate that the oxidation of reducing sodium aluminate solutions containing organic compounds, sulfur, and iron with atmospheric oxygen during the Bayer process sedimentation stage can effectively oxidize predominantly ferrous iron into less soluble ferric iron, thereby achieving iron removal.","PeriodicalId":18461,"journal":{"name":"Metals","volume":"15 11","pages":"1206-1206"},"PeriodicalIF":0.0,"publicationDate":"2025-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2075-4701/15/11/1206/pdf?version=1761749803","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the Solidification Structure, Properties and Composition Segregation of GCr15 Bearing Steel Under Double-Electrode Regulation 双电极调节下GCr15轴承钢凝固组织、性能及成分偏析的研究

3区材料科学

Metals Pub Date : 2025-09-29 DOI: 10.3390/met15101086

Qinghe Xiao, Shengli Li, Siyao Liu, Jiyu Zhao, Xingang Ai, Ye Zhou, Xincheng Miao, Min Wang

{"title":"Research on the Solidification Structure, Properties and Composition Segregation of GCr15 Bearing Steel Under Double-Electrode Regulation","authors":"Qinghe Xiao, Shengli Li, Siyao Liu, Jiyu Zhao, Xingang Ai, Ye Zhou, Xincheng Miao, Min Wang","doi":"10.3390/met15101086","DOIUrl":"https://doi.org/10.3390/met15101086","url":null,"abstract":"To explore the influence of double-electrode regulation technology on the solidification microstructure and properties of GCr15 bearing steel, the double-electrode insertion process was employed in this study, combined with metallographic analysis, mechanical property testing, and electron probe composition characterization. We analyzed the mechanisms of solidification microstructure evolution and mechanical property improvement, as well as the composition segregation control effect, of GCr15 steel under double-electrode regulation. The results show that the double-electrode technology significantly refines the microstructure and improves the internal quality of the ingot by optimizing the temperature field and electromagnetic field distribution in the molten pool and enhancing the internal flow of the melt. The tensile strengths in the upper and middle parts were increased by 84.6% and 29.6%, respectively, which can be attributed to the uniform distribution of carbides at the grain boundaries and the reduction of segregation. Composition analysis indicates that the macroscopic segregation index of C element was decreased under the dual-electrode process. This research provides a theoretical basis and process optimization direction for the high-quality preparation of high-carbon chromium bearing steel.","PeriodicalId":18461,"journal":{"name":"Metals","volume":"15 10","pages":"1086-1086"},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2075-4701/15/10/1086/pdf?version=1759142487","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Rare-Earth Ce Addition on Thermal Stability and Corrosion Resistance of Inconel 718 Superalloy 稀土Ce对Inconel 718高温合金热稳定性和耐蚀性的影响

3区材料科学

Metals Pub Date : 2025-09-29 DOI: 10.3390/met15101090

Muhammad Shakeel, Tahir Ahmad, Muhammad Kamran, Muhammad Abubaker Khan, Jamieson Brechtl

{"title":"Effect of Rare-Earth Ce Addition on Thermal Stability and Corrosion Resistance of Inconel 718 Superalloy","authors":"Muhammad Shakeel, Tahir Ahmad, Muhammad Kamran, Muhammad Abubaker Khan, Jamieson Brechtl","doi":"10.3390/met15101090","DOIUrl":"https://doi.org/10.3390/met15101090","url":null,"abstract":"Inconel 718, which is a high-performance superalloy, is known for its strength under elevated temperatures and corrosive conditions. However, boosting the durability of this alloy in challenging industrial environments is required. Accordingly, this study investigates the effect of rare-earth Cerium (Ce) additions (0.1–0.4 weight percent (wt.%)) on the microstructure, thermal stability, and corrosion resistance of Inconel 718 superalloy synthesized via powder metallurgy. The alloys were comprehensively characterized following sintering and annealing treatment. The results demonstrate that an addition of 0.2 wt.% Ce is optimal, leading to a refined microstructure and significantly improved high-temperature thermal stability. The 0.2 wt.% Ce alloy demonstrated superior thermal stability, with a lower rate of mass gain observed at temperatures up to 1200 °C. This improvement is attributed to Ce promoting a more stable and protective surface oxide layer. Most notably, the annealed (1000 °C/2 h) 0.2 wt.% Ce alloy exhibited a dramatic enhancement in corrosion resistance, as evidenced by a corrosion current density (Icorr) of 3.690 × 10−6 A/cm2, which is over an order of magnitude lower than the baseline Inconel 718. In summary, this work establishes that a minor 0.2 wt.% Ce modification is an effective strategy for substantially improving the durability of Inconel 718 for demanding applications.","PeriodicalId":18461,"journal":{"name":"Metals","volume":"15 10","pages":"1090-1090"},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2075-4701/15/10/1090/pdf?version=1759212065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of a Porous Tri-n-decylamine Modified Adsorbent for the Efficient Removal of Uranium and Iron from Rare Earth 多孔三正癸胺改性吸附剂的制备及其对稀土中铀和铁的高效脱除作用

3区材料科学

Metals Pub Date : 2025-09-23 DOI: 10.3390/met15101064

Zihang Yi, Lifeng Chen, Shichang Zhang, Juan Liu, Zhifu Ye, Mohammed F. Hamza, Yuezhou Wei, Shunyan Ning

引用次数: 0

Study on the Optimization of the Morphology and Nucleation Mechanism of Electroplated Sn-Pb Coatings by the Synergistic Effect of Composite Additives 复合添加剂协同作用优化电镀锡铅镀层形貌及成核机理的研究

3区材料科学

Metals Pub Date : 2025-08-24 DOI: 10.3390/met15090936

Xiangqing Liu, Chen–Yu Li, Jie Yu, Ruiqi Liu, Min Shang, Xiaolin Su, Jinye Yao, Haitao Ma

{"title":"Study on the Optimization of the Morphology and Nucleation Mechanism of Electroplated Sn-Pb Coatings by the Synergistic Effect of Composite Additives","authors":"Xiangqing Liu, Chen–Yu Li, Jie Yu, Ruiqi Liu, Min Shang, Xiaolin Su, Jinye Yao, Haitao Ma","doi":"10.3390/met15090936","DOIUrl":"https://doi.org/10.3390/met15090936","url":null,"abstract":"This study investigates the synergistic effects of single- and binary-additive systems on the morphology and nucleation mechanism of Sn-Pb alloy electrodeposited coatings. Scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and chronoamperometry were applied in order to obtain more information on the action mechanisms of single-additive systems (cinnamaldehyde, PEG-2000, gelatin, vanillin) and binary ones (0.1 g/L cinnamaldehyde + 0.2 g/L PEG-2000) in Sn-Pb electroplating. Results showed that the use of binary-additive systems based on cinnamaldehyde and PEG-2000 significantly improved coating quality, leading to a smooth and uniform surface, dense grains, and a near-eutectic composition (Sn 63.10 wt.%, Pb 36.90 wt.%). This was because the composite additive, through synergistic effects, exhibited the highest cathodic polarization and the largest charge transfer resistance (189.20 Ω cm2), thus inhibiting the electrodeposition process of Sn2+ and Pb2+. Chronoamperometry revealed that, unlike single additives (PEG-2000 or cinnamaldehyde), the binary-additive system promoted a transition of nucleation mode to instantaneous nucleation, accompanied by a decrease in the peak current and an extension of the corresponding time. This study provides a theoretical basis and experimental support for understanding the nucleation mode of Sn-Pb electroplating, as well as optimizing the synergistic mechanism of additives.","PeriodicalId":18461,"journal":{"name":"Metals","volume":"15 9","pages":"936-936"},"PeriodicalIF":0.0,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2075-4701/15/9/936/pdf?version=1756009315","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Sintering Pressure and Co Content on the Microstructure and Mechanical Performance of WC–Co Cemented Carbides 烧结压力和Co含量对WC-Co硬质合金组织和力学性能的影响

3区材料科学

Metals Pub Date : 2025-08-22 DOI: 10.3390/met15090930

Jielin Ju, Dan Huang, Haitao Xu, Duo Dong, Jiangpeng Lou, Yuan Xu, Jiao Shi, Liu Zhu

{"title":"Effects of Sintering Pressure and Co Content on the Microstructure and Mechanical Performance of WC–Co Cemented Carbides","authors":"Jielin Ju, Dan Huang, Haitao Xu, Duo Dong, Jiangpeng Lou, Yuan Xu, Jiao Shi, Liu Zhu","doi":"10.3390/met15090930","DOIUrl":"https://doi.org/10.3390/met15090930","url":null,"abstract":"The fabrication of WC-based cemented carbides faced challenges including inhomogeneous composition and grain coarsening. To solve these problems, WC–Co cemented carbides were fabricated via spark plasma sintering (SPS) using core–shell WC–Co powders prepared by an electroless plating method. The effects of sintering pressure and Co content on the microstructure and mechanical properties of the cemented carbides were investigated. The results showed that, with increasing sintering pressure, the relative density of the sintered samples was improved (98.4–99.6%) while the grains were coarsened (0.94–1.07 μm). The optimal properties (fracture toughness 11.11 MPa·m1/2, and hardness 2100.3 HV30) were obtained when sintered with a pressure of 20 MPa. Grain coarsening at higher pressure (30 MPa) reduced the toughness of the cemented carbides. When the Co content was increased from 3 wt.% to 8 wt.%, fracture toughness was improved while the hardness of the cemented carbides was reduced, attributed to the intrinsic high toughness and low hardness of the Co phase. The WC–8 wt.% Co cemented carbides exhibited optimized synergic mechanical performance (hardness of 1874.2 HV30 and fracture toughness of 13.77 MPa·m1/2). This work elucidated the relationship between the key sintering parameters (pressure and Co content) and the microstructure and mechanical properties of the cemented carbides. The achievements obtained provide a theoretical foundation for high-quality fabrication of the WC–Co cemented carbides.","PeriodicalId":18461,"journal":{"name":"Metals","volume":"15 9","pages":"930-930"},"PeriodicalIF":0.0,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2075-4701/15/9/930/pdf?version=1755857031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Efficient Flotation Separation of Antimonate Minerals from Quartz Using Sodium Dodecyl Sulfonate as Collector 十二烷基磺酸钠捕收剂高效浮选分离石英中锑矿物

3区材料科学

Metals Pub Date : 2025-07-21 DOI: 10.3390/met15070815

Feng Jiang, Pengyuan Wang, Jiapeng Qi, Wei Sun, Yulin Zhou, Weishang Zhao, Shuai He, Yuanjia Luo, Honghu Tang

{"title":"Efficient Flotation Separation of Antimonate Minerals from Quartz Using Sodium Dodecyl Sulfonate as Collector","authors":"Feng Jiang, Pengyuan Wang, Jiapeng Qi, Wei Sun, Yulin Zhou, Weishang Zhao, Shuai He, Yuanjia Luo, Honghu Tang","doi":"10.3390/met15070815","DOIUrl":"https://doi.org/10.3390/met15070815","url":null,"abstract":"The efficient separation of antimonate minerals from quartz remains a significant challenge in mineral processing due to their similar surface properties and strong hydrophilicity. This study explored the application of sodium dodecyl sulfonate (SDS) as a selective collector for antimonate–quartz flotation separation. Micro-flotation tests demonstrated that SDS achieved optimal recovery of antimonate minerals (90.25%) at pH 8 with a dosage of 70 mg/L, while quartz recovery remained below 10%. Contact angle measurements revealed a significant increase in the hydrophobicity of antimonate minerals after SDS treatment, whereas quartz remained highly hydrophilic. FTIR and XPS analyses confirmed the selective chemisorption of SDS on antimonate mineral surfaces through Sb-O-S bond formation, while negligible adsorption occurred on quartz. Adsorption isotherms further showed the higher SDS uptake on antimonate minerals compared to quartz. These findings collectively demonstrate the effectiveness of SDS as a selective collector for the flotation of antimonate minerals, providing a promising approach to enhancing the recovery of fine antimonate particles.","PeriodicalId":18461,"journal":{"name":"Metals","volume":"15 7","pages":"815-815"},"PeriodicalIF":0.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2075-4701/15/7/815/pdf?version=1753088974","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147903357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3