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学者姓名：邓荣东
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Abstract ：
With the development of mineral dressing techniques, some sulfide lead-zinc tailings have become valuable because the lead and zinc can be recovered through secondary flotation. However, owing to long-term open storage, the surfaces of lead-zinc sulfide minerals become oxidized, and their floatability is significantly reduced. In this study, the effects of oxidation on the floatability and flotation separation of galena and sphalerite ore of different grain sizes were systematically investigated via microflotation and surface detection analysis techniques. The microflotation results indicated that surface oxidation reduced the floatability of galena and sphalerite and increased the difficulty of flotation separation between them. Within the grain size range, a larger grain size corresponded to a more obvious inhibition effect and more difficult separation of galena and sphalerite after oxidation. This was mainly due to the generation of hydrophilic oxidized substances on the surfaces of the minerals after oxidation, which hindered the adsorption of the collector. Ultrasonic cleaning can remove the oxides on the surface of lead and zinc sulfide ores and restore their floatability, while improving the flotation separation.
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| GB/T 7714 | Lin, Rongping , Wu, Siyuan , Liu, Quanjun et al. Effects of Surface Oxidation on Floatability and Separation of Galena and Sphalerite and Its Elimination [J]. | JOM , 2025 , 77 (6) : 4838-4849 . |
| MLA | Lin, Rongping et al. "Effects of Surface Oxidation on Floatability and Separation of Galena and Sphalerite and Its Elimination" . | JOM 77 . 6 (2025) : 4838-4849 . |
| APA | Lin, Rongping , Wu, Siyuan , Liu, Quanjun , Deng, Rongdong , Li, Xin . Effects of Surface Oxidation on Floatability and Separation of Galena and Sphalerite and Its Elimination . | JOM , 2025 , 77 (6) , 4838-4849 . |
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To address the challenges associated with the agglomeration and encapsulation of chalcopyrite by molybdenite in flotation slurries, which hinder the effective separation of copper and molybdenum, this study investigated the effects of various dispersants on the dispersion behavior of chalcopyrite and molybdenite, along with the underlying mechanisms. Optical microscopy, focused beam reflectance measurements (FBRM), infrared spectroscopy, zeta potential analysis, and other analytical techniques were employed. The results revealed that the dispersion behaviors of chalcopyrite and molybdenite align with the EDLVO theoretical model. At a slurry pH of 12, the dispersant effectively dispersed molybdenite and minimized its agglomeration around chalcopyrite. The dispersive capabilities of the tested dispersants followed the order: sodium carbonate (Na2CO3) > sodium hexametaphosphate (SHMP, (NaPO3)(6)) > sodium silicate (Na2OnSiO(2)) > ammonium bicarbonate (NH4HCO3). Specifically, carbonate ions produced by the hydrolysis of Na2CO3 were chemically adsorbed onto the molybdenite surface, while hexametaphosphate primarily adhered through physical adsorption. This adsorption enhanced the dispersion of molybdenite particles by increasing electrostatic repulsion between them. Mixed ore flotation experiments demonstrated that both Na2CO3 and SHMP significantly reduced the copper grade in the molybdenum concentrate, from 3.95% to 2.69% and 2.67%, respectively.
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| GB/T 7714 | Che, Wenfang , Deng, Rongdong , Xiao, Shijie et al. Enhancing the Flotation Separation of Copper-Molybdenum Sulfide Minerals by Reducing Molybdenite Agglomeration Through the Use of Dispersants [J]. | JOM , 2025 , 77 (6) : 4718-4732 . |
| MLA | Che, Wenfang et al. "Enhancing the Flotation Separation of Copper-Molybdenum Sulfide Minerals by Reducing Molybdenite Agglomeration Through the Use of Dispersants" . | JOM 77 . 6 (2025) : 4718-4732 . |
| APA | Che, Wenfang , Deng, Rongdong , Xiao, Shijie , Zhang, Jing , Wu, Siyuan , Jiao, Fen . Enhancing the Flotation Separation of Copper-Molybdenum Sulfide Minerals by Reducing Molybdenite Agglomeration Through the Use of Dispersants . | JOM , 2025 , 77 (6) , 4718-4732 . |
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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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选用适宜的浮选质量在线监测方法可快速、准确地获取矿浆品位等浮选产品质量信息,从而对浮选状态作出必要的、及时的调整.为了指导相关从业人员科学、准确地选择和运用现有的浮选质量在线监测方法,在系统介绍了不同在线监测方法机理的基础上,逐一回顾了各方法在国内外的应用情况,并对各技术的特点、应用现状及优缺点进行了比较,指出需要结合生产实际环境和精度要求选用合适的监测技术.最后对浮选质量在线监测方法的发展趋势进行了展望.在线监测方法的研发将进一步推动自动化技术在选矿领域的应用,达到稳定生产指标,提高生产效率的目的.
Keyword ：
X荧光品位分析 X荧光品位分析 品位 品位 在线监测 在线监测 拉曼光谱 拉曼光谱 泡沫图像 泡沫图像 浮选 浮选
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| GB/T 7714 | 柳方正 , 陈享享 , 张朝阳 et al. 浮选质量在线监测方法研究现状与进展 [J]. | 金属矿山 , 2025 , (3) : 210-218 . |
| MLA | 柳方正 et al. "浮选质量在线监测方法研究现状与进展" . | 金属矿山 3 (2025) : 210-218 . |
| APA | 柳方正 , 陈享享 , 张朝阳 , 欧阳云飞 , 邱璐 , 黄世毅 et al. 浮选质量在线监测方法研究现状与进展 . | 金属矿山 , 2025 , (3) , 210-218 . |
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通过纯矿物试验,系统考察了巯基乙酸钠对黄铜矿、闪锌矿和黄铁矿可浮性的影响,并研究了丁基黄药、硫酸铜和双氧水对受巯基乙酸钠抑制的三种矿物浮选行为的影响.采用接触角、动电位和红外光谱分析等手段对样品进行分析,深入探讨丁基黄药、硫酸铜和双氧水对受巯基乙酸钠抑制的铜锌硫硫化矿的活化机理.结果表明:对受抑制黄铜矿而言,仅使用丁基黄药就能较好地恢复其可浮性,回收率可达到91.01%,而硫酸铜活化和双氧水氧化对进一步提高可浮性作用较小;受抑制的黄铁矿较黄铜矿更难恢复可浮性,需要经双氧水氧化,然后添加丁基黄药才能使其可浮性有效提高,回收率可达90.22%;受抑制闪锌矿的可浮性最难恢复,而且无论双氧水氧化还是硫酸铜活化均难以恢复其可浮性,其回收率仅不到10%.机理研究表明,丁基黄药通过竞争吸附可恢复黄铜矿表面的疏水性;硫酸铜通过为黄铜矿和黄铁矿表面提供活性位点,促进黄药的吸附;双氧水通过强氧化作用降解巯基乙酸钠,从而利于丁基黄药在黄铜矿和黄铁矿表面的吸附.本研究为受巯基乙酸钠抑制的铜锌硫硫化矿的高效分选提供了理论与技术依据.
Keyword ：
可浮性 可浮性 巯基乙酸钠 巯基乙酸钠 活化 活化 浮选 浮选 硫化矿 硫化矿 闪锌矿 闪锌矿 黄铁矿 黄铁矿 黄铜矿 黄铜矿
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| GB/T 7714 | 代旺 , 邓荣东 , 肖世洁 et al. 受巯基乙酸钠抑制的铜锌硫硫化矿可浮性规律 [J]. | 矿冶 , 2025 , 34 (1) : 43-51 . |
| MLA | 代旺 et al. "受巯基乙酸钠抑制的铜锌硫硫化矿可浮性规律" . | 矿冶 34 . 1 (2025) : 43-51 . |
| APA | 代旺 , 邓荣东 , 肖世洁 , 赵睿祺 , 李鑫 . 受巯基乙酸钠抑制的铜锌硫硫化矿可浮性规律 . | 矿冶 , 2025 , 34 (1) , 43-51 . |
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Arsenic contamination significantly affects the quality of copper concentrates, presenting challenges during smelting processes. Considering that covellite and enargite have similar surface properties, they are difficult to separate by flotation, resulting in copper concentrates with excessive levels of arsenic. To address this issue, this study systematically investigated the flotation separation of covellite and enargite in microflotation and bench-scale flotation tests using calcium lignosulfonate as a depressant, with the results indicating that calcium lignosulfonate can be used to separate covellite and enargite because it enables the separation of arsenic-bearing copper minerals into high- and low-arsenic (As 0.57%) copper concentrates. According to contact angle and adsorption tests, scanning electron microscopy-energy dispersive spectroscopy, and X-ray photoelectron spectroscopy, the differential adsorption of calcium lignosulfonate onto covellite and enargite is the primary reason for their distinct flotation behaviors in the presence of calcium lignosulfonate. The selective depressive effect of calcium lignosulfonate provides a novel approach for improving the flotation separation of arsenic-bearing minerals from copper sulfide minerals.
Keyword ：
Calcium lignosulfonate Calcium lignosulfonate Covellite Covellite Enargite Enargite Flotation Flotation Separation Separation
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| GB/T 7714 | Lin, Rongping , Liu, Quanjun , Deng, Rongdong . Calcium Lignosulfonate as a Depressant for Enhancing Flotation Separation of Covellite and Enargite [J]. | MINING METALLURGY & EXPLORATION , 2024 , 41 (2) : 1135-1144 . |
| MLA | Lin, Rongping et al. "Calcium Lignosulfonate as a Depressant for Enhancing Flotation Separation of Covellite and Enargite" . | MINING METALLURGY & EXPLORATION 41 . 2 (2024) : 1135-1144 . |
| APA | Lin, Rongping , Liu, Quanjun , Deng, Rongdong . Calcium Lignosulfonate as a Depressant for Enhancing Flotation Separation of Covellite and Enargite . | MINING METALLURGY & EXPLORATION , 2024 , 41 (2) , 1135-1144 . |
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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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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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研究了酸反应过程中硫酸质量分数、方解石粒径、十二烷基硫酸钠(SDS)添加量和动态流体流速对方解石颗粒表观密度的影响.结果表明:硫酸质量分数 1%时,方解石能稳定在低表观密度状态,且方解石粒径越小,表观密度越低;质量浓度 300 mg/L的SDS能够增强方解石表面疏水性,有效增加CO2 气泡在矿物表面的吸附密度和停留时间,延长方解石颗粒的低表观密度时间;动态流体会加速气泡从方解石表面脱附,不利于酸反应过程中降低方解石表观密度,而SDS处理能显著减小这种不利影响.沉降试验结果表明,酸反应能延长方解石颗粒的沉降时间,创造有利分选条件,能通过重选实现方解石与非碳酸盐矿物的分离.
Keyword ：
CO2气泡 CO2气泡 动态流体 动态流体 十二烷基硫酸钠 十二烷基硫酸钠 方解石 方解石 流态化分选 流态化分选 硫酸 硫酸 萤石 萤石 表观密度 表观密度
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| GB/T 7714 | 赵睿祺 , 邓荣东 , 陈佳林 et al. 方解石在硫酸溶液中表观密度变化规律及其对分选的影响 [J]. | 矿冶工程 , 2024 , 44 (6) : 54-59,65 . |
| MLA | 赵睿祺 et al. "方解石在硫酸溶液中表观密度变化规律及其对分选的影响" . | 矿冶工程 44 . 6 (2024) : 54-59,65 . |
| APA | 赵睿祺 , 邓荣东 , 陈佳林 , 毛志东 , 魏祥杰 , 方辰烨 et al. 方解石在硫酸溶液中表观密度变化规律及其对分选的影响 . | 矿冶工程 , 2024 , 44 (6) , 54-59,65 . |
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In this study, a comprehensive approach was adopted by combining micro-flotation, microscopy (optical and scanning electron microscopy), spectroscopy (X-ray diffraction and X-ray photoelectron spectroscopy), contact angle, and electron backscatter diffraction analysis techniques. The effects of differences in oxidation rates on the floatability and surface properties of high-sulfur epithermal pyrite (HSEP) in a shallow ore belt and porphyry pyrite (PP) in a deep ore belt of a hydrothermal deposit were investigated, and the relationship between the mineralogical properties and oxidation rate was studied. The experimental results showed that the discrepancy in the oxidation rate led to distinct differences in the flotation performances of HSEP and PP; the former exhibited a higher oxidation rate, and the floatability significantly decreased, whereas the latter exhibited a lower oxidation rate, and the floatability remained essentially unchanged. This is attributed to the difference in the crystal structures of the two types of pyrite. In addition to the various reaction sensitivities of the different crystal planes, the distribution densities of Fe and S atoms along the preferred orientation crystal plane of HSEP were higher than those of PP. This was conducive to the formation of Fe(III)-S and S2-, thereby accelerating the oxidation reaction.
Keyword ：
Atomic distribution density Atomic distribution density Crystallographic orientation Crystallographic orientation Floatability Floatability Oxidation rate Oxidation rate Pyrite Pyrite
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| GB/T 7714 | Duan, Wenting , Wang, Yi , Rao, Feng et al. Correlation Between the Mineralogical Properties and Oxidation Rate of Different Minerogenetic Pyrites: a Reflection on Floatability [J]. | MINING METALLURGY & EXPLORATION , 2023 , 40 (4) : 1369-1381 . |
| MLA | Duan, Wenting et al. "Correlation Between the Mineralogical Properties and Oxidation Rate of Different Minerogenetic Pyrites: a Reflection on Floatability" . | MINING METALLURGY & EXPLORATION 40 . 4 (2023) : 1369-1381 . |
| APA | Duan, Wenting , Wang, Yi , Rao, Feng , Liu, Wenyuan , Yang, Yuankun , Deng, Rongdong . Correlation Between the Mineralogical Properties and Oxidation Rate of Different Minerogenetic Pyrites: a Reflection on Floatability . | MINING METALLURGY & EXPLORATION , 2023 , 40 (4) , 1369-1381 . |
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