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学者姓名：郭宝
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Abstract ：
In the flotation beneficiation of copper and molybdenum co-occurrence ores, the efficient depression of chalcopyrite is crucial for successful copper-molybdenum separation. However, the consumption of conventional depressant NaHS is huge. There is greater susceptibility of chalcocite and other secondary copper sulfide minerals to electrochemical reaction in comparison to chalcopyrite. Given the irreversible desorption behavior of collector molecules on chalcocite upon negative potential application, electrochemically regulated flotation can be effectively utilized to diminish the utilization of conventional depressants. In this work, electrochemistry and shell-separated nanoparticle-enhanced Raman spectroscopy (SHINERS) were used to explore the transformation of chalcopyrite surface to chalcocite-like species under the combined action of Cu2+ and negative potential. The results show that the similarity of cyclic voltammetry (CV) between the modified chalcopyrite and chalcocite, increases with the pretreatment potential becoming increasingly negative. Electrochemical impedance spectroscopy (EIS) also reflects their similar adsorption and desorption behavior in response to ammonium dibutyl dithiophosphate (ADD), a typical flotation collector molecule. In addition, the spectroelectrochemical directly reflects the irreversible desorption of ADD molecules from the modified chalcopyrite surface at - 0.7 V. The research results lay a theoretical foundation for the efficient Cu-Mo separative flotation by depressing chalcopyrite under the combination of Cu2+ and negative potential.
Keyword ：
Chalcocite Chalcocite Chalcopyrite Chalcopyrite Electrochemical Electrochemical Irreversible desorption Irreversible desorption SHINERS SHINERS Surface modification Surface modification
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| GB/T 7714 | Zhang, Kecan , Lei, Shan , Miao, Yu et al. Spectroelectrochemistry study on the surface modification of chalcopyrite by Cu2+and its depressive response to flotation collector adsorption by negative potential [J]. | APPLIED SURFACE SCIENCE , 2025 , 682 . |
| MLA | Zhang, Kecan et al. "Spectroelectrochemistry study on the surface modification of chalcopyrite by Cu2+and its depressive response to flotation collector adsorption by negative potential" . | APPLIED SURFACE SCIENCE 682 (2025) . |
| APA | Zhang, Kecan , Lei, Shan , Miao, Yu , Guo, Bao . Spectroelectrochemistry study on the surface modification of chalcopyrite by Cu2+and its depressive response to flotation collector adsorption by negative potential . | APPLIED SURFACE SCIENCE , 2025 , 682 . |
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Compared to copper sulfide minerals with good floatability in copper ore beneficiation, copper oxide minerals exhibit poor floatability but increasing reserves as refractory copper resources. Sulfidation of copper oxide minerals by adding Na2S into the pulp is a common strategy to increase their floatability. In this work, sulfidation roasting as a pretreatment method was proposed to increase the floatability of malachite using xanthate as the collector. Roasting was conducted at 500-600 degrees C for 3-120 min using pyrite as the sulfur source and coal to control oxygen partial pressure (PO2), which plays a crucial role in sulfidation reactions. Thermodynamic factors and experimental observations, including roasting product characterization and roasting kinetics analysis, were considered to optimize the roasting parameters with minimized energy and material consumption. It was found that 84.5% flotation recovery can be achieved by roasting malachite at 500 degrees C for 6 min. Microanalysis shows that sulfidation occurs homogeneously across the bulk particle because of porous structure of the raw mineral. The SO2 gas species, as a pyrite oxidation product and sulfur carrier in the roasting system, diffuse into malachite mineral particles and sulfidize copper oxide to chalcocite and digenite.
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| GB/T 7714 | Yu, Chun , Zhu, Liangzhen , Ding, Xuemin et al. Sulfidation Roasting of Malachite and Its Flotation Behavior [J]. | JOM , 2025 , 77 (4) : 2444-2452 . |
| MLA | Yu, Chun et al. "Sulfidation Roasting of Malachite and Its Flotation Behavior" . | JOM 77 . 4 (2025) : 2444-2452 . |
| APA | Yu, Chun , Zhu, Liangzhen , Ding, Xuemin , Guo, Bao . Sulfidation Roasting of Malachite and Its Flotation Behavior . | JOM , 2025 , 77 (4) , 2444-2452 . |
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This paper presents a treatment process for copper smelter dust's chlorinated leaching solution. Addressing the challenge of separating As and valuable metals from this solution, the process utilized SO2 to reduce As(V) to As(III) and NaOH to neutralize Bi(III), resulting in the stepwise formation of As2O3 and BiOCl. The results indicate that, under optimal conditions, the precipitation ratio of As reached 71.23%, and the Bi precipitation ratio reached 98.38%. Following Bi precipitation, two separation strategies were attempted for the recovery of Cu and Zn. The first strategy involves recovery of Cu using a sulfide precipitation method, followed by the recrystallization of ZnSO4. Under optimal conditions, the Cu precipitation ratio can reach 99.81%. The second strategy involves Cu solvent extraction using Lix984N coupled with Zn solvent extraction using P204. Under appropriate conditions, the Cu extraction rate can achieve 98.59%. A comprehensive assessment indicates that using sulfidation - crystallization to separate Cu and Zn is more economical than employing solvent extraction methods. Consequently, the final process is determined as follows: As removal by SO2 reduction > Bi recovery by NaOH neutralization > Cu recovery by sulfidation precipitation > Zn recovery by crystallization.
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| GB/T 7714 | Guo, Zhuzhu , Gao, Chunhui , Wu, Siyuan et al. Removal of As in Copper Smelter Dust's Chlorinated Leaching Solution by SO2 Reduction and the Subsequent Separation of Bi/Cu/Zn [J]. | JOM , 2025 , 77 (5) : 3409-3417 . |
| MLA | Guo, Zhuzhu et al. "Removal of As in Copper Smelter Dust's Chlorinated Leaching Solution by SO2 Reduction and the Subsequent Separation of Bi/Cu/Zn" . | JOM 77 . 5 (2025) : 3409-3417 . |
| APA | Guo, Zhuzhu , Gao, Chunhui , Wu, Siyuan , Guo, Bao , Deng, Rongdong , Jiang, Kaixi . Removal of As in Copper Smelter Dust's Chlorinated Leaching Solution by SO2 Reduction and the Subsequent Separation of Bi/Cu/Zn . | JOM , 2025 , 77 (5) , 3409-3417 . |
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In this study, the adsorption behavior of gallium ions on a synthesized hydroxamic acid resin from sulfuric acid solution was investigated, aiming to recover Ga directly from pressure leaching solution in zinc hydrometallurgical plant. Hydroxamic acid chelating resin (HA-PDR) was prepared by introducing hydroxamic acid groups into the pre-made polyacrylate resin (PDR) with methyl ester group through hydroxylamine reaction. Polyacrylate-divinylbenzene hydroxamic resins with a nitrogen content of up to 3.85 % were obtained at a divinylbenzene (DVB) content of 13 % and an optimal raw material ratio of NH2OH & sdot;HCl: NaOH: -CH3 = 4:4.5:1 (molar ratio). The obtained materials was characterized using FTIR, XPS and SEM to verify the successful introduction of hydroxamic acid groups. The results of adsorption experiments showed that the adsorption capacity of 27.65 mg/g could be obtained with a chemical, multilayered, and heterogeneous adsorption process, and film diffusion and intra-particle diffusion rate controlled mainly the adsorption efficiency. It has been proven that polyacrylate-divinylbenzene hydroxamic resins has extremely high adsorption selectivity for gallium in sulfuric acid solution, and the desorption effect is obvious, which can be applied promisingly in the industrial development of gallium extraction technology from zinc leaching residue in sulfuric acid system.
Keyword ：
Adsorption Adsorption Gallium Gallium Hydroxamic resins Hydroxamic resins Polyacrylate-divinylbenzene Polyacrylate-divinylbenzene Sulfuric acid Sulfuric acid
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| GB/T 7714 | Li, Yujie , Chen, Xiangxiang , Guo, Bao et al. Synthesis of polyacrylate-divinylbenzene hydroxamic resins and its gallium adsorption performance in sulfuric acid solution [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 60 . |
| MLA | Li, Yujie et al. "Synthesis of polyacrylate-divinylbenzene hydroxamic resins and its gallium adsorption performance in sulfuric acid solution" . | JOURNAL OF WATER PROCESS ENGINEERING 60 (2024) . |
| APA | Li, Yujie , Chen, Xiangxiang , Guo, Bao , Dai, Zilin , Kong, Zhenxing , Li, Fangxu et al. Synthesis of polyacrylate-divinylbenzene hydroxamic resins and its gallium adsorption performance in sulfuric acid solution . | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 60 . |
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Pb2+ plays a modifying role in the flotation behavior of various sulfide and oxide minerals. However, there is currently no consensus on the use of lead salts as modifiers in mineral flotation. Based on previous research, this article provides a comprehensive review of the activation effect of Pb2+ on common oxide and sulfide minerals flotation from the perspective of interfacial reactions. A theoretical model for Pb2+ activation has been proposed in this article. When the pH is less than 7, Pb2+ replaces the metal atoms in the lattice of sulfide minerals or adsorbs on the mineral surface to form PbS. When pH is in the range of 7 similar to 10, chemical adsorption of Pb(OH)+ occurs on the mineral surface, leading to the formation of Me-O-Pb+. When pH = 10 similar to 11, Pb(OH)(2) precipitates on the mineral surface. Under this condition, it activates the flotation of quartz but inhibits the flotation of sulfide minerals.
Keyword ：
Activation Activation Lead ion Lead ion Mineral flotation Mineral flotation Reaction mechanism Reaction mechanism
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| GB/T 7714 | Miao, Yu , Ding, Xuemin , Min, Jiarui et al. A Review on the Activation Effect of Lead Ions in Mineral Flotation [J]. | MINING METALLURGY & EXPLORATION , 2024 , 41 (3) : 1477-1483 . |
| MLA | Miao, Yu et al. "A Review on the Activation Effect of Lead Ions in Mineral Flotation" . | MINING METALLURGY & EXPLORATION 41 . 3 (2024) : 1477-1483 . |
| APA | Miao, Yu , Ding, Xuemin , Min, Jiarui , Deng, Rongdong , Guo, Bao , Yu, Chun . A Review on the Activation Effect of Lead Ions in Mineral Flotation . | MINING METALLURGY & EXPLORATION , 2024 , 41 (3) , 1477-1483 . |
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In the minerals processing industry, the surface chemistry of mineral particles and its real-time detection can significantly enhance process performance, and ultimately leading to automotive and intelligent control. The adsorption of collector molecule onto bulk mineral specimens could be investigated with the help of shellisolated nanoparticle enhanced Raman spectroscopy (SHINERS). However, this method is unsuitable for the online detection of particles fluid consisted of micro-sized chalcocite that encountered in industrial production processes. In this work, a novel strategy of shell-isolated nanoparticles synthesis by electrodeposition of gold nanoparticles film and isolation of this film with crosslinked silica monolayer was proposed. The adsorption of 2mercaptobenzothiazole (MBT), a typical flotation collector, onto a copper sulfide mineral, chalcocite was measured in-situ with the help of such a SERS substrate. Enhancement factors of 106-107 was calculated based on an idealized model. Furthermore, we discussed the stability of the silica isolation monolayer under high-power laser irradiation.
Keyword ：
Adsorption Adsorption Chalcocite Chalcocite Electrodeposition Electrodeposition SERS SERS Silica monolayer Silica monolayer
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| GB/T 7714 | Dong, Weinan , Guo, Jinsheng , Yu, Chun et al. Silica monolayer isolation of electrodeposited SERS substrate and online probing of molecule adsorption onto mineral microparticles in relation to flotation [J]. | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2024 , 312 . |
| MLA | Dong, Weinan et al. "Silica monolayer isolation of electrodeposited SERS substrate and online probing of molecule adsorption onto mineral microparticles in relation to flotation" . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 312 (2024) . |
| APA | Dong, Weinan , Guo, Jinsheng , Yu, Chun , Guo, Bao , Jiang, Kaixi . Silica monolayer isolation of electrodeposited SERS substrate and online probing of molecule adsorption onto mineral microparticles in relation to flotation . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2024 , 312 . |
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In this study, the occurrence state and distribution characteristics of gallium (Ga) in zinc refinery residue were investigated by dilute acid pre-washing to enrich Ga in zinc refinery residue, followed by silane coupling agent pretreatment and epoxy resin curing, and then analyzed using scanning electron microscopy, focused ion beam micro-slicing technique and transmission electron microscopy. The acid washing increased the mass ratio of Ga from 0.92% to 2.12%. Energy-dispersive spectroscopy and select area electron diffraction revealed that Ga occurred as tiny ring-like particles of gallobeudantite (a Pb-jarosite) that intimately envelop the previously formed K-jarosite fine-grained inclusions. Density functional theory calculations showed that the interplanar spacings of the new phase formed after Ga substitution for Fe in Pb-jarosite (3.413 Å and 5.505 Å) were in good agreement with the actual measured values, further confirming that Ga substitution for Fe in Pb-jarosite was achieved. The kinetical model explains the formation of multiple phases during precipitation in the treatment of zinc leaching solution. Compared to existing studies, this work reveals the spatial distribution of gallium with higher resolution and jointly determines the gallium-containing phases through experimental analysis and simulation calculations. This microanalytical method enhances the understanding of Ga species formation during zinc refining, aiding in their distribution control and process optimization. Graphical abstract: (Figure presented.) © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.
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| GB/T 7714 | Dong, W. , Qiu, X. , Zhao, W. et al. Microanalytical investigations of gallium occurrence and distribution in zinc refinery residue [J]. | Journal of Materials Science , 2024 , 59 (31) : 14606-14620 . |
| MLA | Dong, W. et al. "Microanalytical investigations of gallium occurrence and distribution in zinc refinery residue" . | Journal of Materials Science 59 . 31 (2024) : 14606-14620 . |
| APA | Dong, W. , Qiu, X. , Zhao, W. , Guo, B. , Jiang, K. , Chiou, M.-F. et al. Microanalytical investigations of gallium occurrence and distribution in zinc refinery residue . | Journal of Materials Science , 2024 , 59 (31) , 14606-14620 . |
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It is difficult to depress secondary copper sulfide minerals in the separative flotation of copper-molybdenum coexisting ores with a huge NaHS consumption, and causing serious safety and environmental problems. Galvanic interaction between active metallic granular (low consumption depressant; LCD) and secondary copper sulfide mineral particles can induce surface passivation, thereby depressing its floatability and achieving clean and efficient regulation of copper molybdenum separation. The use of 10% LCD was applied at the first stage and 5 kg/t NaHS at the second stage can recover 89.71% of Cu, while only 52.89% of Cu can be recovered for single stage flotation where 20 kg/t NaHS was used without any presence of LCD. To avoid the negative effect of Mg(OH)2 colloids at higher pH at the second stage, sodium hexametaphosphate (SHMP) was added as a dispersant and Mo recovery could be pulled up to 89.63%.
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| GB/T 7714 | Lei, Shan , Wu, Jiaxing , Miao, Yu et al. Galvanic Couple-Induced Depression Effect with Clean and Efficient Regulation Regime of Cu-Mo Separative Flotation [J]. | JOM , 2024 , 77 (2) : 758-764 . |
| MLA | Lei, Shan et al. "Galvanic Couple-Induced Depression Effect with Clean and Efficient Regulation Regime of Cu-Mo Separative Flotation" . | JOM 77 . 2 (2024) : 758-764 . |
| APA | Lei, Shan , Wu, Jiaxing , Miao, Yu , Guo, Bao . Galvanic Couple-Induced Depression Effect with Clean and Efficient Regulation Regime of Cu-Mo Separative Flotation . | JOM , 2024 , 77 (2) , 758-764 . |
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在处理含细泥、高硅有色金属矿物时，常出现沉降速率慢、固液分离难等问题，不利于后续的萃取-电积过程，从而影响生产的正常运转。为解决酸浸矿浆中除硅难的问题，本工作以-2000目(6.5μm)高岭土为原料，探究了细粒高岭土在酸性体系下的絮凝沉降行为。结果表明，聚丙烯酰胺(PAM)对高岭土的絮凝性能强于聚乙二醇(PEO)。助凝剂聚苯乙烯磺酸钠(PSS)可以进一步提高絮凝效果，PAM和PEO与100 g/t PSS配合使用时絮凝作用最佳；而单宁酸(TA)的助凝效果不明显；利用聚焦光束反射测量(FBRM)发现，絮凝过程中产生絮团的大小与用药量呈正相关，但絮团越大，抗剪切能力越弱，且絮团的破坏过程是不可逆的；Zeta电位表明，PSS能够有效降低其表面电位，这是高岭土能够在酸性体系下絮凝的主要机理。
Keyword ：
助凝剂 助凝剂 絮凝沉降 絮凝沉降 酸性体系 酸性体系 高岭土 高岭土
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| GB/T 7714 | 俞新煌 , 李世淇 , 展鑫磊 et al. 酸性体系下高岭土的絮凝沉降行为 [J]. | 过程工程学报 , 2024 , 24 (08) : 993-1000 . |
| MLA | 俞新煌 et al. "酸性体系下高岭土的絮凝沉降行为" . | 过程工程学报 24 . 08 (2024) : 993-1000 . |
| APA | 俞新煌 , 李世淇 , 展鑫磊 , 郭宝 , 邓荣东 , 蒋开喜 et al. 酸性体系下高岭土的絮凝沉降行为 . | 过程工程学报 , 2024 , 24 (08) , 993-1000 . |
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针对锌粉置换渣提取Ga、Ge过程浸出效果不佳的问题，本研究首先开展了常压硫酸浸出试验，考察硫酸浓度、反应温度、液固比、反应时间对Ga、Ge浸出率的影响，并对浸出过程进行了动力学分析；而后分别尝试了还原浸出(先后以Na_2SO_3、SO_2为还原剂)、硫酸化焙烧-水浸两种工艺，对锌粉置换渣开展了Ga、Ge强化浸出试验。结果表明：常压硫酸浸出工艺在硫酸浓度150 g/L、反应温度90℃、液固体积质量比5 mL/g、反应时间4 h、搅拌转速400 r/min的适宜条件下，Ga、Ge浸出率分别为68.4%、61.7%;酸浸渣主要物相为PbSO_4和ZnAl_2O_4,增加酸度可促使残留的黄钾铁矾、铅铝矾进一步溶出；Ga和Ge常压硫酸浸出过程主要受内扩散控制，反应表观活化能分别为18.06 kJ/mol和16.02kJ/mol。对一段常压硫酸浸出渣进行二段还原强化浸出，以Na_2SO_3为还原剂，在50 g/L H_2SO_4+3 g/L Na_2SO_3条件下，Ga、Ge浸出率达89.4%和70.1%;以SO_2为还原剂，在SO_2分压0.3 MPa、硫酸浓度50 g/L、反应温度110℃、、反应时间3 h条件下，Ga、Ge浸出率达88.9%和86.7%。硫酸化焙烧-水浸工艺对锌粉置换渣中Ga的浸出效果改善明显，但对Ge浸出不利，酸渣体积质量比宜为1/2.5 mL/g,并在焙烧温度300℃、焙烧时间3 h、水浸温度80℃、液固体积质量比5 mL/g、浸出时间2 h的条件下，Ga浸出率可提高到89.1%。
Keyword ：
二段还原浸出 二段还原浸出 强化浸出 强化浸出 硫酸化焙烧 硫酸化焙烧 硫酸浸出 硫酸浸出 锌粉置换渣 锌粉置换渣 锗 锗 镓 镓
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| GB/T 7714 | 赵唯淞 , 邱雪红 , 董伟楠 et al. 锌粉置换渣中镓、锗的强化浸出试验研究 [J]. | 稀有金属与硬质合金 , 2024 , 52 (04) : 17-26 . |
| MLA | 赵唯淞 et al. "锌粉置换渣中镓、锗的强化浸出试验研究" . | 稀有金属与硬质合金 52 . 04 (2024) : 17-26 . |
| APA | 赵唯淞 , 邱雪红 , 董伟楠 , 郑朝振 , 郭宝 , 蒋开喜 . 锌粉置换渣中镓、锗的强化浸出试验研究 . | 稀有金属与硬质合金 , 2024 , 52 (04) , 17-26 . |
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