Article
Engineering, Chemical
Zhihao Guo, Sultan Ahmed Khoso, Jinggang Wang, Chenyang Zhang, Zhiyong Gao, Wei Sun, Mengjie Tian, Yuling Liu
Summary: This manuscript investigates the performance and interaction mechanism of 2-hydroxy-3-naphthyl hydmxamic acid (2-OH-3-NHA) and 1-hydroxy-2-naphthyl hydmxamic acid (1-OH-2-NHA) as flotation collectors for the separation of bastnaesite/fluorite. The results show the excellent selectivities of NHAs and the better selectivity of 1-OH-2-NHA than 2-OH-3-NHA. Zeta potential measurements and first-principles calculations provide insights into the adsorption behavior and selectivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Wengang Liu, Liang Lv, Yong Mao, Hao Duan, Tiebing Yue, Fei Cao
Summary: The flotation separation of bastnaesite from calcite is an important issue in mineral selection. This study found that the use of the new collector OIBHA can effectively achieve the separation of bastnaesite from calcite. The results of Fourier transform infrared, ζ potential measurements, and quantum chemical calculations revealed the selective adsorption mechanism of OIBHA.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Engineering, Chemical
Yan Wang, Donghui Wang, Longhua Xu, Kai Xue, Xi Zhang, Xinzhang Shi, Chang Liu, Jinping Meng
Summary: A novel oleate hydroxamic acid (OLHA) was synthesized and used as a collector for bastnaesite flotation. The results showed that OLHA achieved efficient separation of bastnaesite and barite under specific conditions.
MINERALS ENGINEERING
(2023)
Article
Engineering, Chemical
Lingyun Fei, Xin Ma, Hongyu Sun, Shuai Wang, Zhanfang Cao, Hong Zhong, Lanqing Deng
Summary: A novel Y structure multi-functional surfactant, DHBA, was developed for the flotation recovery of rhodochrosite. It exhibited excellent collecting ability and selectivity for rhodochrosite, and improved the surface hydrophobicity of rhodochrosite.
MINERALS ENGINEERING
(2023)
Article
Chemistry, Physical
Zhihao Guo, Mengjie Tian, Gongming Qian, You Zhou, Zhiyong Gao, Wei Sun
Summary: This study investigated the flotation separation of bastnaesite and fluorite, two important minerals containing light rare earth elements (LREEs). Styrylphosphonic acid (SPA) and cinnamohydroxamic acid (CHA) were used as the collectors. The results showed that SPA and CHA exhibited certain selectivities, with CHA having stronger collecting ability but poorer selectivity compared to SPA. The adsorption mechanisms of SPA and CHA on the surfaces of bastnaesite and fluorite were also examined using various tests and calculations.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Xiaoyu Cao, Xiaoping Huang, Jianxian Zeng, Rui Zhang, Hong Zhong, Zhanfang Cao
Summary: The role of the thioether (C-S-C) group in improving the flotation performance of benzo-hydroxamic acid (BHA) toward galena was studied. It was found that the incorporation of C-S-C group increased the functional groups, chelating ability and hydrophobicity of BHA, enhancing its flotation performance to galena. The adsorption mechanism analysis showed that the BTHA molecule anchored on the galena surface mainly through the reactions of the two O atoms originated from -C(=O)-NH-OH group and lead species forming a five-membered ring. The C-S-C group in BTHA molecule could donate its electrons to lead species on galena surface, facilitating the adsorption of BTHA.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Applied
Sheng Chang, Mei Li, Kai Gao, Dongliang Zhang, Haijun Duan, Linlin Ma, Zheng Ruan
Summary: The study investigated the mechanism of phthalic acid as a dicarboxylic acid collector in the flotation separation of fluorite and rare earth minerals. Experimental data showed that phthalic acid could efficiently separate the two minerals under weakly acidic conditions. The adsorption mechanism analysis revealed the formation of stable polycyclic calcium phthalate complex on the surface of fluorite.
JOURNAL OF RARE EARTHS
(2022)
Article
Engineering, Chemical
Shiyong Zhang, Zhiqiang Huang, Hongling Wang, Rukuan Liu, Chen Cheng, Zhiqun Guo, Xinyang Yu, Guichun He, Weng Fu
Summary: In this study, a new hydroxamic-acid molecule, sebacoyl hydroxamic acid (SHA), was synthesized and used as a collector for wolframite flotation. The results showed that SHA collector achieved higher wolframite recovery at a lower dosage compared to the traditional collector, and it also eliminated the need for lead ions during the flotation process.
Article
Chemistry, Inorganic & Nuclear
Mei Zhang, Lingyun Huang, Xin Sun, Bo Hu, Yamin Li, Zhuoyue Lan
Summary: A novel chelating collector, phenylethyl hydroxamic acid (BEHA), was synthesized to float copper oxide malachite without the need for sulfurization. BEHA showed better collection performance than benzohydroxamic acid (BHA) in single mineral flotation tests, and efficient separation ability between malachite and quartz in a binary mixed slurry system at pH 8.0. The binding of BEHA to copper active sites on the surface of malachite was confirmed to be chemical in nature, forming Cu-BEHA.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Geochemistry & Geophysics
Xiang Yao, Xinyang Yu, Yuhui Zeng, Linghan Mao, Honghui Xie, Shanming Liu, Guichun He, Zhiqiang Huang, Haolin Wang, Zhilin Liu
Summary: This paper investigates the application of a new collector, phenylpropyl hydroxamic acid (PHA), for the separation of bastnaesite from calcite. The experimental results demonstrate that PHA exhibits good selectivity and collection performance. Various analyses reveal the chemical adsorption and reactions between PHA and bastnaesite, leading to changes in the surface properties of bastnaesite and improved hydrophobicity for easier flotation.
Article
Engineering, Chemical
Cai Zeng, Kaihua Huang, Chengke Wang, Yutao Gong, Na Huang, Xiaoping Huang, Huifang Yang, Song Zou, Hong Zhong
Summary: In this study, octyl hydroxamic acid (OHA) was used as a collector for galena flotation, and its adsorption kinetics on galena surface was fully investigated. The optimal pH for adsorption was found to be 9.5, and adsorption equilibrium was reached within 2 hours. It was observed that the adsorption process was exothermic, spontaneous, ordered, and monolayer. The adsorption of OHA on galena surface altered the surface charges and enhanced the hydrophobicity, as confirmed by zeta potential and contact angle measurements, respectively. XPS analysis revealed that OHA primarily chemisorbed on the galena surface through binding reactions between the two oxygen atoms of the -C(=O)-NHOH group and Pb(OH)+ ions at pH 9.5. Flotation experiments demonstrated that 4 x 10-5 mol/L OHA collected 98.62% of galena at pH 9.5, which was higher than the efficiency achieved by sodium isopropyl xanthate (SIPX) under the same experimental conditions.
MINERALS ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
Xu Wu, Yiwen Hu, Sultan Ahmed Khoso, Zhao Cao
Summary: A new collector mixture of octyl hydroxamic acid (OHA) and octyl phenol ethoxylation (OP10) was proposed to improve the flotation of bastnaesite, which is a major issue in the rare earth ore flotation industry. Experimental and analytical tests revealed that the OHA/OP10 combination significantly enhanced the recovery of fine-grained bastnaesite and promoted its aggregation. The co-adsorption of OHA and OP10 on the surface of bastnaesite was confirmed by zeta potential, fluorescence spectrum, and XPS analysis.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2023)
Article
Engineering, Chemical
Yuxi Lu, Shuai Wang, Hong Zhong
Summary: In this study, a series of N-phenyl hydroxamic acids were synthesized and applied as flotation collectors for selectively separating cassiterite from quartz and feldspar. Among them, N-phenyl hexanohydroxamic acid and N-phenyl octanohydroxamic acid showed superior flotation performances to cassiterite. The chemisorption of N-phenyl octanohydroxamic acid onto cassiterite surfaces was confirmed through experiments and analyses, providing new insights into the development of cassiterite collectors.
MINERALS ENGINEERING
(2021)
Article
Chemistry, Physical
Hao Duan, Wengang Liu, Wenbao Liu, Yanbai Shen, Xiaowei Gu, Jingping Qiu, Shijie Zhou
Summary: By developing a novel surfactant DODHA, effective flotation separation of fluorite, calcite, and barite can be achieved with efficient enrichment of fluorite and without the addition of depressants. The strong interaction between DODHA and fluorite, as well as the negligible adsorption on calcite and barite, are key factors in determining the superior selectivity of DODHA.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Jianyong He, Wei Sun, Daixiong Chen, Zhiyong Gao, Chenyang Zhang
Summary: Surface coordination chemistry plays a crucial role in adsorption, separation, and catalysis. The study investigated the surface coordination interactions of benzohydroxamic acid with lead ion on the cassiterite surface through first-principles calculations, revealing the preference of Pb(II) to react with the cassiterite surface rather than BHA due to weaker chelation ability. The findings indicate that the coordination mechanisms of Pb(II) on oxide minerals are influenced by the coordination ability of BHA and the unique electronic structure of Pb(II), shedding light on the activation mechanism of metal ions on oxide mineral surfaces for improved flotation performance.
Article
Engineering, Chemical
Liang Zhao, Wengang Liu, Hao Duan, Xinyang Wang, Ping Fang, Wenbao Liu, Xiaotong Zhou, Yanbai Shen
Summary: The study explores a flotation collector design method based on the bond valence model and density functional theory, showing that LAA and LSA have better flotation abilities towards hemimorphite, while DGL and LSA can chemisorb onto the hemimorphite surface.
MINERALS ENGINEERING
(2021)
Article
Chemistry, Analytical
Sikai Zhao, Yanbai Shen, Roya Maboudian, Carlo Carraro, Cong Han, Wengang Liu, Dezhou Wei
Summary: ZnO-SnO2 hetero-structured nanowires were fabricated by growing SnO2 nanoparticles on ZnO nanowires, showing improved NO2 sensing properties with the highest response at a Sn/Zn atomic ratio of 5% and operating temperature of 150 degrees C. These hetero-structured nanowires also exhibited faster response/recovery rate and better NO2 selectivity compared to pristine ZnO nanowires, with the performance difference explained by surface depletion and potential barrier control models.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Fei Cao, Wei Wang, De-zhou Wei, Wen-gang Liu
Summary: Functionalized ionic liquids were employed as extractants for the separation of tungsten and molybdenum from a sulfate solution for the first time. The [A336][Cyanex272] system showed selective extraction of tungsten over molybdenum at an initial pH value of 5.5 and achieved high separation factors. Stripping experiments demonstrated efficient recovery of tungsten and molybdenum using a sodium hydroxide solution. The results suggest the feasibility and effectiveness of using [A336][Cyanex272] for the separation of tungsten and molybdenum.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Engineering, Chemical
Hao Duan, Wengang Liu, Liang Zhao, Xinyang Wang
Summary: The research found that the novel collector OPHA could selectively adsorb on the fluorite surface, leading to effective flotation separation of fluorite from barite. The adsorption strength of OPHA on fluorite surface was found to be higher compared to that on barite surface. DFT calculations showed that the interaction strength between OPHA and the mineral surfaces followed a specific order, with OPHA2- having the strongest adsorption on fluorite.
MINERALS ENGINEERING
(2021)
Article
Chemistry, Physical
Xinyang Wang, Wengang Liu, Wenbao Liu, Yanbai Shen, Hao Duan, Jingping Qiu, Xiaowei Gu
Summary: The study showed that DDA and LAO have excellent adsorption under natural conditions, but they have different adsorption mechanisms due to different polar groups. Based on simulation results and analysis, the adsorption of amine surfactants on quartz is inferred as multilayer.
APPLIED SURFACE SCIENCE
(2021)
Article
Metallurgy & Metallurgical Engineering
Hao Zhang, Dezhou Wei, Wengang Liu, Duanxu Hou, Ruiyang Zhang
Summary: Chalcopyrite is the most abundant copper-bearing mineral in nature, but large amounts of low-grade ores cannot easily be utilized due to technical and economic limitations, resulting in significant waste of resources. This study found that the use of PVP can enhance the bioleaching of chalcopyrite, improving the efficiency of bioleaching.
Article
Chemistry, Physical
Hao Duan, Wengang Liu, Wenbao Liu, Yanbai Shen, Xiaowei Gu, Jingping Qiu, Shijie Zhou
Summary: By developing a novel surfactant DODHA, effective flotation separation of fluorite, calcite, and barite can be achieved with efficient enrichment of fluorite and without the addition of depressants. The strong interaction between DODHA and fluorite, as well as the negligible adsorption on calcite and barite, are key factors in determining the superior selectivity of DODHA.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Hao Zhang, Dezhou Wei, Wengang Liu, Duanxu Hou, Ruiyang Zhang
Summary: Chalcopyrite is a common copper-bearing mineral, especially in the treatment of low-grade minerals, bioleaching technology plays an important role. The study found that using NP-15 can significantly improve the bioleaching efficiency of chalcopyrite, effectively reducing sulfur deposition on the chalcopyrite surface.
MINERALS ENGINEERING
(2021)
Article
Engineering, Chemical
Xinyang Wang, Wengang Liu, Hao Duan, Wenbao Liu, Yanbai Shen, Xiaowei Gu, Jingping Qiu, Chunyun Jia
Summary: The eco-friendly collector LAO shows better flotation performance and higher selectivity in the separation of hematite and quartz, with lower toxicity and being a non-toxic compound to aquatic organisms.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Wenhan Sun, Wengang Liu, Shujuan Dai, Hao Duan, Wenbao Liu
Summary: In this study, AECNa compounds were synthesized to improve the flotation performance of fatty acids. The results showed that AEC3Na exhibited advantages in capture ability and dispersibility, and had an anti-activation effect.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Xiangyu Peng, Wengang Liu, Wenbao Liu, Panxing Zhao, Xi Yu, Yan Wang
Summary: This study reported an excellent adsorbent (ST-600) obtained from serpentine tailings for the treatment of organic dye wastewater. The results showed that after roasting treatment, ST-600 exhibited significant enhancement in removal efficiency for rhodamine B and methylene blue. The adsorption mechanism of these dyes on the surface of ST-600 was found to involve a complex reaction process.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Xiangyu Peng, Wenbao Liu, Qiang Zhao, Wengang Liu, Kelin Tong, Panxing Zhao
Summary: In this study, a new surfactant HDMEA was synthesized and used as a new-type amine collector in the reverse flotation separation of apatite from quartz. The results showed that HDMEA had significantly better separation performance compared to the traditional collector DDA. The adsorption mechanism of DDA and HDMEA on quartz and apatite was explored using various measurements and calculations.
MINERALS ENGINEERING
(2022)
Article
Engineering, Environmental
Mingming Chen, Qinghua Gu, Huiping Shao, Haihong Liu, Jingde Luan, Zheng Yan, Wengang Liu, Xin Ke
Summary: In this study, PPY/CMC aerogels exhibited rapid and efficient removal of norfloxacin, with a maximum adsorption capacity of 845.7 mg/g in the pH range of 3-10. The adsorption process was influenced by electron-donor-acceptor interactions, competition with humic acid and background ions, and the charge and structural properties of the antibiotics. The PPY/CMC aerogels demonstrated good recyclability, making them a promising adsorbent for the removal of multiple antibiotics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Geochemistry & Geophysics
Benying Wang, Panxing Zhao, Wengang Liu, Wenbao Liu, Ying Guo, Kelin Tong, Xudong Chen
Summary: A novel hydroxyl-containing quaternary ammonium surfactant was synthesized and applied as a collector for the reverse cationic flotation separation of apatite from quartz. The adsorption mechanisms between the surfactant and the two mineral surfaces were investigated, and the results showed excellent flotation performance.
Article
Chemistry, Analytical
Zhiyang Liu, Yanbai Shen, Sikai Zhao, Jinzhou Bai, Ruixue Ma, Shuling Gao, Wengang Liu, Qiang Zhao
Summary: This work presents a novel structure LC resonant passive wireless gas sensor to mitigate substrate interference. The LC sensor antenna and the reader antenna in the new structure were designed and optimized using HFSS software for improved transfer efficiency. The superiority of the designed structure was highlighted and verified. The newly developed sensor structure not only prevented interference from the substrate during gas sensing testing, but also expanded the choice of sensor substrates, playing a critical role in the development of sensors based on the LC resonance principle.
Article
Engineering, Chemical
Benjamin De Castro, Mostafa Benzaazoua, Soumali Roychowdhury, Aurelie Chopard, Francis Quintal Lauzon, Benoit Plante
Summary: This study proposes an innovative method using deep learning algorithm and reflected light optical imaging to automatically detect all particles and minerals in acrylic resin polished sections. The experimental results show that this method can accurately detect all mineral particles, including transparent minerals, under reflected light optical microscopy, and provide unbiased mineralogical quantification.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Qiushi Song, Xinyu Du, Changlu Shan, Hongwei Xie, Zhiqiang Ning, Kai Yu
Summary: This study investigated the effect of magnetic stirring on the microstructure of Co deposits during electrowinning in a chloride solution. It was found that magnetic stirring effectively reduced the negative influence of H2 bubbles on the structure of Co deposits and changed their nucleation and growth behavior, resulting in the preparation of high-quality columnar Co crystals.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Tao Ge, Xiaowei Zhou, Liang Xu, Yan Sun, Cheng Yang, Yongpan Tian, Zhuo Zhao
Summary: In this study, the extraction performance and complexation mechanism of p-di-ethyl-amino-methylthiacalix[4]arene (L) towards Pt(IV) were investigated. The results indicated that L had excellent complexation ability towards Pt(IV) and could selectively extract it from a solution containing multiple competing ions.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Yuan Li, Dirk van Zyl
Summary: This paper presents a modified Kynch's approach to explain the hindered settling behavior of suspensions impacted by segregation. The experimental data and predicted results confirm the effectiveness of the proposed method.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Yi Fang, Aurora Robledo-Cabrera, Changsheng Peng, Shan Huang, Qi Xiao, Alejandro Lopez-Valdivieso
Summary: With the assistance of mechanical ball milling, the partially oxidized micro-sponge iron (micro-Fe0@Fe2O3) achieves significantly improved removal of Cr(VI) across a broad pH range. Mechanical force eliminates the surface oxide layer and exposes the Fe0 core, leading to sustained reduction of Cr(VI). The efficiency of micro-Fe0@Fe2O3 is strongly influenced by dissolved oxygen, with higher DO resulting in the generation of stable reductant Fe(II) under acidic conditions, while DO consumption hinders the reduction of Cr(VI) under alkaline conditions due to increased pH. Parameters of ball milling operation, especially rotation speed, have a significant impact on the removal of Cr(VI).
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Alton F. Grabsch, Phillip D. Fawell, Michael G. Davies
Summary: High molecular weight partially hydrolysed polyacrylamide (PHPA) is commonly used in mineral exploration drilling to increase fluid viscosity and help maintain the suspension of fine particles. However, clarifying these suspensions can be difficult, and previous studies have found that anionic flocculants are ineffective. This study confirmed that nonionic flocculants can successfully aggregate the particles, indicating that the charged tails of adsorbed PHPA prevent anionic flocculants from accessing the particle surfaces.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
J. S. Guiral-Vega, L. Perez-Barnuevo, J. Bouchard, A. Ure, E. Poulin, C. Du Breuil
Summary: This paper introduces an approach that combines particle properties and process modeling to describe the behavior of iron ore in a laboratory-scale drum-type magnetic separator. Early information on iron ore processing behavior can be obtained through laboratory testing, automated mineralogy analysis, and process modeling.
MINERALS ENGINEERING
(2024)
Review
Engineering, Chemical
Sayed Janishar Anzoom, Ghislain Bournival, Seher Ata
Summary: This review discusses the benefits and challenges of coarse particle flotation, as well as recent developments in improving the process. Coarse particle flotation has various applications and offers advantages in technical, economic, and sustainability aspects. However, it also faces challenges such as particle detachment, transfer between phases, and persistence in the froth phase. Technological advancements, such as fluidized-bed flotation and processes enhancing bubble-particle attachment, have shown promising results in efficiently recovering larger particles.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Yimei Xiao, Jinchan Feng, Bingqiao Yang, Huihua Luo, Fang Zhou
Summary: In this study, the use of fulvic acid as a depressant for the flotation separation of chalcopyrite from arsenopyrite was investigated. It was found that fulvic acid strongly depressed arsenopyrite while having little influence on chalcopyrite flotation. The addition of calcium hypochlorite facilitated the adsorption of fulvic acid on arsenopyrite surface.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Bo Hao, Minqiang Fan
Summary: Particle-bubble attachment is crucial in coal and mineral flotation processes. In this study, the attachment process of low-rank coal particles to the bubble surface was simulated, revealing the important role of water film rupture in particle attachment.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Shuwei Wu, Shuai Wang, Guoqiang Wang, Longfei Fan, Jianbo Guo, Zhengbin Liu, Haoyan Zhang, Wei Guan, Yukuan Wang, Yewei Wu
Summary: This study analyzes the motion mode of eccentric roller crushers and proposes a calculation method for productivity. Through laboratory experiments, the results indicate that the proposed method can effectively estimate the productivity of eccentric roll crushers.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Hanna Miettinen, Malin Bomberg, Ozlem Bicak, Zafir Ekmekci, Paivi Kinnunen
Summary: Mineral processing requires large amounts of water, and reducing water consumption through recirculation and closing water loops is important. However, this can lead to the accumulation of contaminants in the process water, which can negatively affect the process performance. In this study, the impact of microorganisms on flotation performance was investigated, and ion exchange was evaluated for removing dissolved sulfur species and microorganisms from water. The results showed that adding microorganisms had a positive effect on flotation selectivity, especially for nickel. Different water types, process water and final tailings water, behaved slightly differently. Ion exchange proved to be effective in removing sulfur species and microorganisms, and dissolved air flotation was a successful pretreatment for ion exchange in removing microorganisms.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Canneng Chen, Song Zhang, Quanjun Liu, Luzheng Chen, Yongjun Xian, Yijie Wang
Summary: This study introduces the use of ultrasonic pretreatment to enhance the flotation separation of elemental sulfur and silver-bearing lead minerals from ultrafine residue. The results show that ultrasonic pretreatment effectively liberates associated sulfur and improves the separation of sulfur and silver-bearing lead minerals. Under optimized conditions, ultrasonic pretreatment significantly improves the recovery and grade of sulfur in the concentrate, as well as the recovery of lead and silver in the tailings.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Genzhuang Li, Fisher Wang, Bern Klein, Michael Deal, Aaron Wright, Hector Mezquita
Summary: This paper presents a stress-based approach for predicting and improving large-scale HIG mill performance through experimental testing and model calibration.
MINERALS ENGINEERING
(2024)
Article
Engineering, Chemical
Runpeng Liao, Shuming Wen, Jian Liu, Shaojun Bai, Qicheng Feng
Summary: This study demonstrates that the use of a DDA/DDTC mixed collector system can significantly improve the flotation performance of smithsonite. The synergistic effect between DDA and DDTC is confirmed, and the mixed collector system contributes to a decrease in solution surface tension. The use of FT-IR and XPS confirms the simultaneous physisorption and chemisorption of DDA and DDTC on the smithsonite surface, and contact angle measurements show that the mixed collector effectively enhances the hydrophobicity of smithsonite. Molecular dynamics simulations reveal the multilayer adsorption of DDTC and DDA on the smithsonite surface, with DDTC promoting the adsorption of DDA.
MINERALS ENGINEERING
(2024)
