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学者姓名:蒋开喜
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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.
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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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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, 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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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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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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资源、能源和环境是制约有色金属工业可持续发展的重要问题,针对我国有色冶炼资源禀赋差、综合回收率低、环境污染重等问题,提出了最小化学反应量原理,从资源、环境、能源、原辅材料消耗、投资、成本等多角度进行工艺分析及优化,实现主金属及伴生元素提取的最大化,原辅材料消耗及环境影响最小化,提高企业的经济效益.以最小化学反应量原理为指导,开发了复杂难处理资源可控加压浸出、难处理氧化矿选冶新工艺等多项技术体系,并在铜、锌、镍、钴、锂、钼等多领域进行了创新及应用,同时综合回收镓、锗、铼、金、银等伴生有价金属,实现了战略金属高效清洁提取和广泛工业应用.
Keyword :
加压浸出 加压浸出 复杂难处理资源 复杂难处理资源 最小化学反应量原理 最小化学反应量原理 有色冶炼 有色冶炼
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GB/T 7714 | 蒋开喜 , 王海北 , 王玉芳 et al. 最小化学反应量原理在有色冶炼技术研发中的应用 [J]. | 有色金属(冶炼部分) , 2024 , (11) : 187-196 . |
MLA | 蒋开喜 et al. "最小化学反应量原理在有色冶炼技术研发中的应用" . | 有色金属(冶炼部分) 11 (2024) : 187-196 . |
APA | 蒋开喜 , 王海北 , 王玉芳 , 刘三平 . 最小化学反应量原理在有色冶炼技术研发中的应用 . | 有色金属(冶炼部分) , 2024 , (11) , 187-196 . |
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Flotation is a potential method for extracting residual copper sulfide (CuS) from the acid-leaching residue of copper smelting dust; however, the inhibitory impact of Bi(III) in the flotation pulp significantly hampers its practical application. In this study, we systematically investigated the inhibition mechanism of Bi(III) on CuS flotation and propose a method to prevent inhibition. Microflotation test results show that a pulp environment with pH 3 and a Bi(III) concentration greater than 1 x 10-2 mol/L significantly depresses the floatability of CuS. Scanning electron microscopy and energy-dispersive spectroscopy results confirmed that Bi(III) hydrolyzes on the surface of CuS to form a precipitate cover layer, which adsorbs onto the surface of CuS. This precipitate was confirmed by X-ray photoelectron spectroscopy analysis and thermodynamic calculations to be BiOCl. Fourier transform infrared analysis revealed that BiOCl reduces the recovery of CuS by hindering the adsorption of xanthate. Finally, the pre-treatment of the leaching residue with H2SO4 + NaCl solution can dissolve BiOCl precipitates on the surface of CuS, eliminate the influence of Bi(III), and result in efficient flotation recovery of CuS from leaching residue.
Keyword :
Bi(III) Bi(III) Copper smelting dust Copper smelting dust Copper sulfide Copper sulfide Flotation Flotation Leaching residue Leaching residue
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GB/T 7714 | Wu, Siyuan , Gao, Chunhui , Chen, Hang et al. Effect of Bi(III) on flotation of copper sulfide from leaching residue of copper smelting dust [J]. | MINERALS ENGINEERING , 2024 , 220 . |
MLA | Wu, Siyuan et al. "Effect of Bi(III) on flotation of copper sulfide from leaching residue of copper smelting dust" . | MINERALS ENGINEERING 220 (2024) . |
APA | Wu, Siyuan , Gao, Chunhui , Chen, Hang , Wu, Tuoxiu , Guo, Bao , Deng, Rongdong et al. Effect of Bi(III) on flotation of copper sulfide from leaching residue of copper smelting dust . | MINERALS ENGINEERING , 2024 , 220 . |
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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 & Aring; and 5.505 & Aring;) 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.
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GB/T 7714 | Dong, Weinan , Qiu, Xuehong , Zhao, Weisong 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, Weinan et al. "Microanalytical investigations of gallium occurrence and distribution in zinc refinery residue" . | JOURNAL OF MATERIALS SCIENCE 59 . 31 (2024) : 14606-14620 . |
APA | Dong, Weinan , Qiu, Xuehong , Zhao, Weisong , Guo, Bao , Jiang, Kaixi , Chiou, Mong-Feng 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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In civil engineering, both rapid setting and delayed setting are needed for various application scenarios. In order to regulate the setting time of concrete, the iron ore tailings-blast furnace slag (IOT-BFS)-based geopolymers were synthesized with a broad range of setting time and a high compressive strength in this study. The factors of iron ore tailings content, alkali content, liquid-solid ratio, and modulus of alkali activator on setting time of the geopolymers were analyzed. The setting times of geopolymers are tested by a manual Vicat apparatus, and their microstructure is characterized by scanning electron microscopy (SEM), as well as that the hydration heat flow is characterized by an isothermal heat conduction calorimeter (TAM Air). It is found that setting time of the geopolymers was mostly affected by the modulus of alkaline activators due to the reasons that changes in modulus lead to the accelerated hydration reaction, formation of low-polymeric silicates, generation of gels, and encapsulation of precursor particles caused by high viscosity. Adjusting the modulus of the alkaline activator to 0.8 can control the initial setting time of the geopolymers to around 3 min. When the modulus ranges from 1-1.8, the initial setting time fell in the range of 15-45 min. For an alkaline activator modulus of 2, the initial setting time increased to 108 min. This study gives a clue for the preparation of geopolymers with adjustable setting times for multi-scenario applications in construction materials.
Keyword :
gel evolution gel evolution geopolymer building materials geopolymer building materials iron ore and blast-furnace slag residues iron ore and blast-furnace slag residues microstructure of geopolymer microstructure of geopolymer rapid setting rapid setting setting time range setting time range waste-based geopolymer waste-based geopolymer
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GB/T 7714 | Wang, Tianyu , Rao, Feng , Yang, Lang et al. Influence of Wastes and Synthesis Conditions on the Compressive Strength, Setting Time and Gels of Waste-Based Geopolymers [J]. | GELS , 2024 , 10 (11) . |
MLA | Wang, Tianyu et al. "Influence of Wastes and Synthesis Conditions on the Compressive Strength, Setting Time and Gels of Waste-Based Geopolymers" . | GELS 10 . 11 (2024) . |
APA | Wang, Tianyu , Rao, Feng , Yang, Lang , Jiang, Kaixi , Lin, Nanan , Mo, Liwei . Influence of Wastes and Synthesis Conditions on the Compressive Strength, Setting Time and Gels of Waste-Based Geopolymers . | GELS , 2024 , 10 (11) . |
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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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