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学者姓名：蒋开喜
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Abstract ：
It is a waste of gallium resource to discard the high aluminum-containing gallium electrolyte. The Ga/Al separation is difficult by only using lime precipitation because of high gallium loss rate. The present study employs an adsorption resin LSC-600P to recover gallium in the simulated gallium electrolyte and then uses lime to remove aluminum, leaving only alkali solution recycled. The results showed that the aluminum removal rate in the gallium electrolyte was 93.12% under the conditions of reaction temperature of 85 degrees C, addition of lime 2 times to the theoretical molar ratio of calcium to aluminum, reaction time of 3 h and stirring speed of 600 r/min. In the experiments of gallium adsorption, after six adsorption-desorption cycles, the adsorption rate of gallium by LSC-600P resin still reached 98.6%, and the adsorption rate of aluminum was lower than 4.5%. In the desorption process, the desorption rate of gallium was more than 98%, and the aluminum content in the stripping solution after desorption was almost negligible. The resin exhibits high adsorption affinity for gallium while demonstrating minimal adsorption for aluminum.
Keyword ：
Adsorption Adsorption Lime precipitation Lime precipitation LSC-600P LSC-600P Simulated gallium electrolyte Simulated gallium electrolyte
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| GB/T 7714 | Pan, Qi , Zhu, Zhen , Lin, Xiaocheng et al. Adsorption-Precipitation Method to Recover Gallium, Aluminum and Alkali from the Gallium Electrolyte in Zinc Refinery Plant [J]. | TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS , 2025 , 78 (4) . |
| MLA | Pan, Qi et al. "Adsorption-Precipitation Method to Recover Gallium, Aluminum and Alkali from the Gallium Electrolyte in Zinc Refinery Plant" . | TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS 78 . 4 (2025) . |
| APA | Pan, Qi , Zhu, Zhen , Lin, Xiaocheng , Guo, Bao , Jiang, Kaixi . Adsorption-Precipitation Method to Recover Gallium, Aluminum and Alkali from the Gallium Electrolyte in Zinc Refinery Plant . | TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS , 2025 , 78 (4) . |
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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, combination of wave absorption materials with different loss mechanisms are added into iron ore tailings-blast furnace slag (IOT-BFS) based geopolymers. The employed materials are hollow glass microsphere (HGM), carbon nanotubes (CNT) and carbonyl iron powder (CIP). Microstructures of the geopolymers are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and concrete porous structure analyzer. Conductivity and electromagnetic absorption property of the geopolymers are measured by a conductivity tester and a vector network analyzer (VNA). As increasing the content of wave absorption materials, compressive strength of the geopolymer decreased from 60.5 to 33.8 MPa. Compared with geopolymers containing HGM and CNT, wave absorption band below -5 dB of the geopolymers with HGM and CIP was wider, particularly at frequencies below 7 GHz, due to the synergism of space and magnetic loss. Its absorption bandwidth with the reflection loss less than -5 dB reaches 15.6 GHz. This study gives a clue for preparation of geopolymers with satisfactory electromagnetic wave absorption properties in the utilization as construction materials.
Keyword ：
Electromagnetic wave absorption Electromagnetic wave absorption Geopolymers Geopolymers Iron ore tailings Iron ore tailings Microstructure Microstructure
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| GB/T 7714 | Wang, Tianyu , Ning, Xuwen , Yang, Lang et al. The synthesis of an iron tailings-based geopolymer with synergistic electromagnetic wave consumption property [J]. | ENVIRONMENTAL RESEARCH , 2025 , 268 . |
| MLA | Wang, Tianyu et al. "The synthesis of an iron tailings-based geopolymer with synergistic electromagnetic wave consumption property" . | ENVIRONMENTAL RESEARCH 268 (2025) . |
| APA | Wang, Tianyu , Ning, Xuwen , Yang, Lang , Rao, Feng , Jiang, Kaixi . The synthesis of an iron tailings-based geopolymer with synergistic electromagnetic wave consumption property . | ENVIRONMENTAL RESEARCH , 2025 , 268 . |
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The economical and environmentally friendly technique for recycling valuable metals from LIBs plays a vital role in the sustainable development of the LIB industry. Simplifying the overall technological process of recycling LIBs cathode materials relies heavily on the prior extraction technique of Li from LIBs. In this study, we propose a novel process combining sulfur roasting treatment and water-leaching process after roasting treatment to selectively and efficiently recycle Li from LIBs cathode materials. At First, thermodynamic analysis demonstrates the feasibility of the reactions between LIBs cathode materials and sulfur. The application of sulfur as an economical reductant allows for the conversion of Li to soluble Li2SO4, which can therefore achieve the preferential extraction of Li. The formation reactions of NiSO4 and CoSO4 do not occur, and the strong binding affinities between Ni, Co, and S lead to the formation of Ni3S2 and Co9S8 during the roasting process. Under the following conditions of the roasting temperature of 550 degrees C, the time of 120 min, and the S/Li (mole ratio) of 1.3, the Li leaching ratio of NCM can reach 80.50 %. The feasibility of this technique is confirmed by the production of Li2SO4 obtained from the leachate through evaporation and crystallization. This research presents an alternative economical process for preferentially recycling Li from spent LIBs.
Keyword ：
Lithium ion battery Lithium ion battery Selective leaching of Li Selective leaching of Li Sulfur roasting process Sulfur roasting process Water leaching Water leaching
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| GB/T 7714 | Li, Da , Jiang, Kaixi , Tang, Ding et al. Water leaching after sulfur roasting: An advanced approach for prior extraction of lithium from lithium-ion batteries (LIBs) [J]. | JOURNAL OF ENERGY STORAGE , 2025 , 114 . |
| MLA | Li, Da et al. "Water leaching after sulfur roasting: An advanced approach for prior extraction of lithium from lithium-ion batteries (LIBs)" . | JOURNAL OF ENERGY STORAGE 114 (2025) . |
| APA | Li, Da , Jiang, Kaixi , Tang, Ding , Wu, Zhenghui , Zhao, Feng , Feng, Liyong . Water leaching after sulfur roasting: An advanced approach for prior extraction of lithium from lithium-ion batteries (LIBs) . | JOURNAL OF ENERGY STORAGE , 2025 , 114 . |
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In this study, four N-containing collectors were compared systematically to study the flotation selectivity, froth layer stability and economic cost in reverse flotation of silicate minerals from fluorapatite. The adsorption of collectors were studied by zeta potential and x-ray photoelectron spectroscopy (XPS) measurements. Froth stability of the slurries with collectors was characterized through froth image and water recovery analysis. The flotation of pure fluorapatite, quartz, mica and raw phosphate ore gave that oleyl amine (OA) and N-(2-hydroxyethyl)-dodecane amide (HEDA) had better selectivity than dodecyl amine (DDA). It was found that the physisorption of OA and HEDA associated with the silicate mineral surfaces through hydrophobic bonding to form hemimicelles. Interestingly in octyl-hydroxamic acid (OHA) flotation, the best selectivity in reverse flotation of silicate minerals from fluorapatite was obtained, because of the chemisorption of O atoms on Al atoms through chelating rings. For froth stability, OA and HEDA induced a denser froth layer than DDA. In OHA flotation slurry, the individual bubbles were larger and easier to coalesce, leading to the lowest water recoveries and froth stability. This study might provide a further understanding on the N-containing collectors in reverse flotation of silicate minerals from fluorapatite.
Keyword ：
Adsorption Adsorption Amine collector Amine collector Flotation Flotation Froth stability Froth stability Octyl-hydroxamic acid Octyl-hydroxamic acid
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| GB/T 7714 | Huang, Wenxuan , Liu, Wenbiao , Zheng, Yongming et al. The comparison of N-containing collectors on selectivity and froth stability in reverse flotation of silicate minerals from fluorapatite [J]. | MINERALS ENGINEERING , 2025 , 230 . |
| MLA | Huang, Wenxuan et al. "The comparison of N-containing collectors on selectivity and froth stability in reverse flotation of silicate minerals from fluorapatite" . | MINERALS ENGINEERING 230 (2025) . |
| APA | Huang, Wenxuan , Liu, Wenbiao , Zheng, Yongming , Rao, Feng , Yang, Lang , Jiang, Kaixi . The comparison of N-containing collectors on selectivity and froth stability in reverse flotation of silicate minerals from fluorapatite . | MINERALS ENGINEERING , 2025 , 230 . |
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Germanium is one of the strategic scattering metals, and recovering a minor concentration of scattering metals from zinc concentrate's leaching solution is an essential resource worldwide. Practically, neutralizing precipitation and the subsequent dissolution are implemented to enrich scattering metals from zinc leaching solution, facilitating further extraction of Ge and others. Silicon poses significant challenges to the efficient extraction of Ge due to their similar chemical property and the inert nature of silica. However, the evolution of the Ge occurrence state, especially its relationship with Si, during the precipitation and dissolution process in zinc hydrometallurgy is unclear, and there is a lack of an effective method to separate Si/Ge. This paper started with a detailed characterization and leaching behavior of Ge-enriched residue obtained from the plant, followed by a systematic investigation of Ge behavior in synthetic Si/Ge binary and Fe/Si/Ge ternary systems. Eventually, options for Ge enrichment from zinc leaching solution and Si/Ge separation are recommended, providing a practical framework for mitigating the negative influence of Si on the extraction of Ge in zinc hydrometallurgy. The significant findings are that Ge/Si are both presumably co-adsorbed by Fe(OH)3 colloids upon neutralization to pH 5 of zinc leaching solution, which could be acid redissolved at the unrealistically high liquid-to-solid ratio of 200/1 at the practically meaningful liquid-to-solid ratio of 5/1, Si concentration is high enough to quickly condense and polymerize, resulting the formation of silica precipitate and permanent encapsulating of Ge into silica; interestingly, the Si-O-Ge bonding becomes weakened with pH increasing up to alkaline region and Ge leaching rate exceeding 80% at pH 10, effectively separating Ge from SiO2.
Keyword ：
Enrichment Enrichment Scattering metals Scattering metals Si/Ge separation Si/Ge separation Zinc hydrometallurgy Zinc hydrometallurgy
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| GB/T 7714 | Chen, Shizhe , Dong, Weinan , Zhao, Weisong et al. The evolution of Ge occurrence state and Si-Ge relationship during precipitation-dissolution enrichment to recover scattering metals from Zn concentrate leaching solution [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 368 . |
| MLA | Chen, Shizhe et al. "The evolution of Ge occurrence state and Si-Ge relationship during precipitation-dissolution enrichment to recover scattering metals from Zn concentrate leaching solution" . | SEPARATION AND PURIFICATION TECHNOLOGY 368 (2025) . |
| APA | Chen, Shizhe , Dong, Weinan , Zhao, Weisong , Qiang, Wen , Chen, Xiangxiang , Guo, Bao et al. The evolution of Ge occurrence state and Si-Ge relationship during precipitation-dissolution enrichment to recover scattering metals from Zn concentrate leaching solution . | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 368 . |
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Interfacial interactions among thiourea (TU), gelatin (GEL), and Cl- critically influence copper electrodeposition. Using electrochemical methods and shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), we reveal their competitive adsorption effects. Linear sweep voltammetry (LSV) showed that low TU concentrations (<= 4 ppm) enhance Cu2+ reduction, with a distinct [Cu(TU)n](+) reduction peak emerging at 6 ppm. However, at concentrations >= 30 ppm, strong chemisorption led to a pronounced negative resistance effect without altering the nucleation mechanism. In the presence of 6 ppm TU, Cl- exhibited a concentration-dependent dual effect. At 20-60 ppm, it enhanced Cu2+ reduction while suppressing [Cu(TU)n](+) reduction, reducing the R-ct from 7.74 Omega to 6.90 Omega. GEL acted primarily as a suppressor; at concentrations >= 30 ppm, it formed a dense adsorption film, increasing R-sf from 2.18 Omega to 5.35 Omega. Shell-isolated nanoparticles (55 nm Au core, similar to 2 nm SiO2 shell) enabled SHINERS-based in situ detection of additive adsorption. Cl- displaced SO42- and interfered with TU adsorption, while high GEL levels suppressed TU adsorption and attenuated SERS intensity. This work uniquely reveals the dual role of Cl- in both promoting Cu2+ reduction and suppressing [Cu(TU)n](+) adsorption, a behavior not previously reported. These findings provide insights into the rational design of advanced copper electrodeposition formulations.
Keyword ：
Cl- Cl- Copper electrodeposition Copper electrodeposition Gelatin Gelatin SHINERS SHINERS Thiourea Thiourea
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| GB/T 7714 | Zhang, Kecan , Guo, Jinsheng , Dong, Weinan et al. In situ SHINERS-electrochemical investigation of thiourea/gelatin/Cl- interactions in Cu electrodeposition: Competitive surface adsorption and kinetic modulation [J]. | APPLIED SURFACE SCIENCE , 2025 , 714 . |
| MLA | Zhang, Kecan et al. "In situ SHINERS-electrochemical investigation of thiourea/gelatin/Cl- interactions in Cu electrodeposition: Competitive surface adsorption and kinetic modulation" . | APPLIED SURFACE SCIENCE 714 (2025) . |
| APA | Zhang, Kecan , Guo, Jinsheng , Dong, Weinan , Pan, Qi , Guo, Bao , Jiang, Kaixi . In situ SHINERS-electrochemical investigation of thiourea/gelatin/Cl- interactions in Cu electrodeposition: Competitive surface adsorption and kinetic modulation . | APPLIED SURFACE SCIENCE , 2025 , 714 . |
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In zinc hydrometallurgical plant, neutralizing precipitation and the subsequent dissolution are implemented to enrich scattering metals, Gallium (Ga) and Indium (In), and Cu from zinc leaching solution, facilitating further extraction and separation of Ga/In and others. The formation of jarosite presents both challenges and opportunities for Ga/In extraction, as Ga/In can substitute Fe within the jarosite structure. In this work, the evolution of the Ga/In occurrence state, especially its relationship with jarosite was investigated and the role of Fe/K/Pb was emphasized. Results show that jarosite formation is inevitable at pH 1-2, with K-jarosite forming kinetically faster than Pb-jarosite. By supplying sufficient K, precipitation rates reached 95.7 % for Ga and 98.1 % for In at pH 2 with little Cu/Ge loss. Eventually, a more appropriate and efficient flowsheet for recovery of scattering metals and Cu from zinc leaching solution is recommended, providing a practical framework comprehensive utilization in zinc hydrometallurgy.
Keyword ：
Enrichment Enrichment Jarosite Jarosite Scattering metals Scattering metals Zinc hydrometallurgy Zinc hydrometallurgy
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| GB/T 7714 | Dong, Weinan , Qiu, Xuehong , Zhao, Weisong et al. The evolution of Ga/In occurrence state and their dependence on jarosite during the precipitation enrichment for recovery of scattering metals and Cu from Zn leaching solution [J]. | SUSTAINABLE MATERIALS AND TECHNOLOGIES , 2025 , 45 . |
| MLA | Dong, Weinan et al. "The evolution of Ga/In occurrence state and their dependence on jarosite during the precipitation enrichment for recovery of scattering metals and Cu from Zn leaching solution" . | SUSTAINABLE MATERIALS AND TECHNOLOGIES 45 (2025) . |
| APA | Dong, Weinan , Qiu, Xuehong , Zhao, Weisong , Guo, Bao , Jiang, Kaixi . The evolution of Ga/In occurrence state and their dependence on jarosite during the precipitation enrichment for recovery of scattering metals and Cu from Zn leaching solution . | SUSTAINABLE MATERIALS AND TECHNOLOGIES , 2025 , 45 . |
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The disposal of scrap rubber, represented by retired tires, has achieved industrial achievements, but the handling of brass-coated steel wire as a structural reinforcement in retired tires has received little attention. A feasible and efficient method of acquiring economical resources is proposed to extract copper and zinc (Cu-Zn) from brass-coated steel wire. With 20% ammonia, 10% hydrogen peroxide, and a liquid-solid ratio of 10, the brass coating almost completely dissolved in 5 minutes. This technique may remedy the challenge of weak dissolving efficiency brought on by the dual phase microstructure of brass. Electrochemical measurements and density functional theory (DFT) simulations assist in verifying that hydrogen peroxide decreases the resistance of the corrosion and that OH- and O-2 in solution are the main contributors to the dissolution. In addition, the AH effectively enhances the corrosion of the alpha phase in brass, which is notably evident in comparable works. This effective strategy broadens the application of retired tires and provides a new method for extracting Cu-Zn resources.
Keyword ：
Brass-coated steel wires Brass-coated steel wires Brass coating Brass coating Corrosion Corrosion H62 brass H62 brass Retired tires Retired tires
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| GB/T 7714 | Wan, Xingyuan , Jiang, Kaixi , Zhang, Ting'an et al. Enhancement of resource recovery from retired tires: Extraction of copper and zinc resources [J]. | ENVIRONMENTAL ENGINEERING RESEARCH , 2024 , 29 (1) . |
| MLA | Wan, Xingyuan et al. "Enhancement of resource recovery from retired tires: Extraction of copper and zinc resources" . | ENVIRONMENTAL ENGINEERING RESEARCH 29 . 1 (2024) . |
| APA | Wan, Xingyuan , Jiang, Kaixi , Zhang, Ting'an , Yang, Han , Wang, Kun . Enhancement of resource recovery from retired tires: Extraction of copper and zinc resources . | ENVIRONMENTAL ENGINEERING RESEARCH , 2024 , 29 (1) . |
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For the cobalt ‐ bearing copper oxide concentrate from Congo，experiment of coke reduction smelting with fayalite slag was conducted. The effects of CaO‐to‐SiO2 mass ratio，FeO ‐ to ‐ SiO2 mass ratio and coke rate on the reduction rates of copper and cobalt were investigated. The reduction sequence and conditions of copper，cobalt，iron and silicon oxides were analyzed by thermodynamics. The reduction process of copper，cobalt and iron oxides was quantitatively analyzed by means of metal oxide reduction thermodynamics and coke gasification kinetics. The results show that the reduction of copper，cobalt and iron in the copper oxide concentrate can be divided into the competitive fast reduction period in the early stage and the slow reduction period of copper and cobalt in the later stage. The reduced metal iron in the slow reduction period will undergo reoxidation. The large amount of competitive iron reduction in the early stage and its reoxidation in the later stage will reduce the reduction rate of copper，cobalt and iron and the effective utilization rate of coke. The formation mechanism of ferroalloy layer on the surface of crude copper is revealed. © 2024 Northeast University. All rights reserved.
Keyword ：
Cobalt compounds Cobalt compounds Coke Coke Copper oxides Copper oxides Iron oxides Iron oxides Silica Silica Silicon Silicon Silicon oxides Silicon oxides Slags Slags Smelting Smelting Thermodynamics Thermodynamics
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| GB/T 7714 | Zhang, Lei , Jiang, Kai-Xi , Xie, Feng et al. Reduction Behaviors of Copper， Cobalt and Iron in Smelting of Copper Oxide Concentrate [J]. | Journal of Northeastern University , 2024 , 45 (3) : 337-345 . |
| MLA | Zhang, Lei et al. "Reduction Behaviors of Copper， Cobalt and Iron in Smelting of Copper Oxide Concentrate" . | Journal of Northeastern University 45 . 3 (2024) : 337-345 . |
| APA | Zhang, Lei , Jiang, Kai-Xi , Xie, Feng , Lu, Dian-Kun . Reduction Behaviors of Copper， Cobalt and Iron in Smelting of Copper Oxide Concentrate . | Journal of Northeastern University , 2024 , 45 (3) , 337-345 . |
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