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Comparative study on separation characteristics between magnetic and conventional spiral separator via CFD-DEM 基于CFD-DEM的磁力与常规螺旋分离机分离特性比较研究
IF 4.8 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-04 DOI: 10.1016/j.mineng.2026.110123
Yunheng Ji, Jianwu Zeng, Haotian Zhang, Luzheng Chen
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引用次数: 0
The impact of the carbon structure of oil-based collectors on the flotation performance and bubble adhesion mechanisms of microfine flake graphite: a comparative study of n-alkanes and n-alkylbenzenes 油基捕收剂碳结构对微细片状石墨浮选性能及气泡粘附机理的影响——正构烷烃与正烷基苯的对比研究
IF 4.8 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-04 DOI: 10.1016/j.mineng.2026.110130
Jianwei Yu, Wanzhong Yin, Jin Yao, Bin Yang, Daolai Tian, Taozhong Zhang, Weifan Du, Xiaoqi Ban, Dilinuer Abudukade
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引用次数: 0
Molecular-level insights into the selective adsorption of gum arabic and its role in the flotation separation of fluorite and calcite 阿拉伯胶的选择性吸附及其在萤石和方解石浮选分离中的作用的分子水平的见解
IF 4.8 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-04 DOI: 10.1016/j.mineng.2026.110128
Xin Guo, Yunfan Wang, Shanlong Yang, Xingyu Liu, Ximei Luo
{"title":"Molecular-level insights into the selective adsorption of gum arabic and its role in the flotation separation of fluorite and calcite","authors":"Xin Guo, Yunfan Wang, Shanlong Yang, Xingyu Liu, Ximei Luo","doi":"10.1016/j.mineng.2026.110128","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110128","url":null,"abstract":"","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"1 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering hydrodynamics via pitch-diameter ratio to intensify eco-efficient separation of fine hematite/quartz in spiral chute 螺旋溜槽中细粒赤铁矿/石英生态高效分离的工程水动力学研究
IF 4.8 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-03 DOI: 10.1016/j.mineng.2026.110108
Shuling Gao, Qian Wang, Xiaohong Zhou, Chunyu Liu, Bochao Li
{"title":"Engineering hydrodynamics via pitch-diameter ratio to intensify eco-efficient separation of fine hematite/quartz in spiral chute","authors":"Shuling Gao, Qian Wang, Xiaohong Zhou, Chunyu Liu, Bochao Li","doi":"10.1016/j.mineng.2026.110108","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110108","url":null,"abstract":"","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"8 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Feasibility of using tap water instead of deionized water in the high-voltage pulse breakage process of magnetite quartzite 磁铁矿石英岩高压脉冲破碎过程中以自来水代替去离子水的可行性
IF 5 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-02 DOI: 10.1016/j.mineng.2026.110126
Bo Zhang , Peng Gao , Shuai Yuan , Yanjun Li , Honghao Zhang
During the high-voltage pulse (HVP) crushing of ore, the liquid itself acts as an insulator. In previous studies, deionized water has been widely used as the working liquid. Compared to deionized water, tap water is cheaper and more readily available. This paper analyzes the feasibility of using tap water as a substitute for deionized water. The results of the tests confirm that tap water slightly reduces the crushing efficiency of HVP. The paired-particle test results indicate that the selective breakage probability of HVP in tap water is approximately 85–90%. SEM-EDS indicates that the HVP products in both tap water and deionized water exhibited similar microstructures. In tap water, the HVP fragmentation also exhibits a pronounced particle size enrichment effect. In the −3 mm particle size fraction, compared to mechanical crushing, the iron distribution rate of HVP products in tap water and deionized water increased by 8.1 and 13.37 percentage points, respectively. In addition, numerical simulation results of the quasi-static electric field revealed that an increase in the electrical conductivity of the water reduces the electric field strength within the ore particles. Compared to deionized water, the maximum electric field strength within the mineral particles in tap water decreases by approximately 18.65% at a voltage of 80 kV.
在高压脉冲(HVP)破碎矿石时,液体本身起绝缘体的作用。在以往的研究中,去离子水被广泛地用作工作液。与去离子水相比,自来水更便宜,也更容易获得。分析了用自来水代替去离子水的可行性。试验结果证实,自来水对高压高压破碎效率有轻微的影响。配对颗粒试验结果表明,自来水中HVP的选择性破碎概率约为85 ~ 90%。SEM-EDS表明自来水和去离子水中的HVP产物具有相似的微观结构。在自来水中,HVP破碎也表现出明显的粒度富集效应。在−3 mm粒度段,与机械破碎相比,自来水和去离子水中HVP产品的铁分配率分别提高了8.1和13.37个百分点。此外,准静态电场的数值模拟结果表明,水电导率的增加会降低矿粒内的电场强度。与去离子水相比,在电压为80 kV时,自来水矿物颗粒内的最大电场强度降低了约18.65%。
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引用次数: 0
Effect of salinity and particle size on arsenic mobility from low sulfide filtered mine tailings and investigation of integrated management options 矿化度和粒径对低硫化物过滤尾矿中砷迁移率的影响及综合治理方案研究
IF 4.8 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-02 DOI: 10.1016/j.mineng.2026.110118
Eléonore Lagae Capelle, Rocky Kiro Kubuya, Lucie Coudert, Isabelle Demers, Carmen Mihaela Neculita
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引用次数: 0
Iron sand–derived materials: A review on synthesis routes, magnetic properties, and multifunctional applications 铁砂衍生材料的合成路线、磁性能及多功能应用综述
IF 4.8 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-02 DOI: 10.1016/j.mineng.2026.110124
Gerald Hendrik Tamuntuan, Ardiansyah Ardiansyah, Audy Denny Wuntu, Guntur Pasau, Darmawati Darwis, Dolfi Pandara, Dahlang Tahir
{"title":"Iron sand–derived materials: A review on synthesis routes, magnetic properties, and multifunctional applications","authors":"Gerald Hendrik Tamuntuan, Ardiansyah Ardiansyah, Audy Denny Wuntu, Guntur Pasau, Darmawati Darwis, Dolfi Pandara, Dahlang Tahir","doi":"10.1016/j.mineng.2026.110124","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110124","url":null,"abstract":"","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"79 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of polyamino polyether methylene phosphonic acid as an eco-friendly depressant in the separation of apatite and dolomite 聚氨基聚醚亚甲基膦酸在磷灰石和白云石分离中的环保型抑制剂评价
IF 5 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-01 DOI: 10.1016/j.mineng.2026.110122
Yuhua Zhu , Cheng Liu , Hongyang Wang , Wei Xu , Siyuan Yang
Flotation separation of apatite from dolomite is still a challenge due to their similar surface characteristics. To address this issue, polyamino polyether methylene phosphonic acid (PAPEMP) was employed to separate apatite and dolomite. The single-mineral flotation results showed that PAPEMP selectively depressed the floatability of dolomite using the sodium oleate (NaOl) collector. The artificial mixed mineral and real flotation tests confirmed that separation between apatite and dolomite could be realized in the reagent scheme of PAPEMP/NaOl. The adsorption tests indicated that the adsorption of PAPEMP on the dolomite surface was much greater than that on the apatite surface. The zeta potential and Fourier Transform Infrared Spectroscopy (FTIR) experiments verified that the interaction between dolomite and PAPEMP was stronger than that between apatite and PAPEMP, then selectively hindered the interaction of NaOl with the dolomite surface. The XPS results indicated that phosphate groups in the PAPEMP molecule interact with calcium/magnesium ions on the dolomite surface, while no effective chemical interaction occurred between PAPEMP and the apatite surface. MS calculation results further confirmed that the interaction between PAPEMP and the dolomite surface was stronger than that between PAPEMP and the apatite surface. Therefore, PAPEMP could be used as an appropriate depressant to separate apatite and dolomite.
由于磷灰石和白云石的表面特征相似,浮选分离仍然是一个挑战。为了解决这一问题,采用聚氨基聚醚亚甲基膦酸(PAPEMP)分离磷灰石和白云石。单矿物浮选结果表明,PAPEMP选择性地抑制了油酸钠捕收剂对白云石的可浮性。人工混合矿物和实际浮选试验证实,PAPEMP/NaOl药剂方案可以实现磷灰石和白云石的分离。吸附试验表明,PAPEMP在白云石表面的吸附量远大于磷灰石表面的吸附量。zeta电位和傅里叶变换红外光谱(FTIR)实验验证了白云石与PAPEMP的相互作用强于磷灰石与PAPEMP的相互作用,从而选择性地阻碍了NaOl与白云石表面的相互作用。XPS结果表明,PAPEMP分子中的磷酸基团与白云石表面的钙/镁离子相互作用,而PAPEMP与磷灰石表面没有发生有效的化学相互作用。MS计算结果进一步证实了PAPEMP与白云石表面的相互作用强于PAPEMP与磷灰石表面的相互作用。因此,PAPEMP可以作为分离磷灰石和白云石的合适抑制剂。
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引用次数: 0
A synergistic H2-Based process for co-recovery of iron and rare earth elements from complex Tailings: Toward a Zero-Waste strategy 从复杂尾矿中协同回收铁和稀土元素的h2基协同工艺:迈向零废物战略
IF 5 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-01-31 DOI: 10.1016/j.mineng.2026.110127
Yuanxing Yue , Yongsheng Sun , Peng Gao , Yuexin Han , Zhidong Tang
The comprehensive utilization of Bayan Obo tailings is hindered by the coexistence of iron and rare earth element (REE) minerals, which require distinct beneficiation conditions. To enhance process compatibility and overall resource recovery, a synergistic separation strategy based on early-stage physical decoupling of iron- and REE-bearing streams is proposed. Magnetic pre-enrichment was first applied to partition the tailings into an iron-rich concentrate and a REE-enriched tailings stream. The iron-rich fraction underwent hydrogen-based mineral phase transformation (HMPT), followed by grinding and magnetic separation, producing a high-grade iron concentrate with 66.16% TFe at a recovery of 76.44%. Concurrently, the REE-enriched tailings were directly processed by flotation without thermal treatment, yielding a rare earth concentrate with 50.38% REO at a recovery of 58.62%. This decoupled flowsheet allows iron and REEs to be processed under conditions tailored to their respective separation requirements, thereby reducing cross-process interactions. Mechanism studies using XRD confirmed hematite-to-magnetite transformation; XPS revealed Fe3+/Fe2+ reduction and strong chemical interaction between BHA and Ce ions; SEM-EDS illustrated microcrack-enhanced gas–solid reactions. Overall, the proposed H2-based integrated route provides a practical, low-carbon strategy for coordinated iron and REE recovery from complex tailings, improving both process efficiency and resource utilization.
巴彦鄂博尾矿中铁和稀土元素矿物共存,对选矿条件要求不同,阻碍了尾矿的综合利用。为了提高工艺兼容性和整体资源回收率,提出了一种基于含铁和含稀土流体早期物理解耦的协同分离策略。首先采用磁预富集技术将尾矿分选为富铁精矿和富稀土尾矿。富铁部分经氢基矿物相变(HMPT)、磨矿、磁选,获得了TFe品位为66.16%、回收率为76.44%的高品位铁精矿。同时,对富集稀土的尾矿进行不经热处理直接浮选处理,得到REO为50.38%、回收率为58.62%的稀土精矿。这种解耦的流程允许铁和稀土在适合其各自分离要求的条件下进行处理,从而减少了跨过程的相互作用。利用XRD对赤铁矿向磁铁矿转变机理进行研究;XPS显示BHA与Ce离子之间存在Fe3+/Fe2+还原和强化学相互作用;SEM-EDS显示了微裂纹增强的气固反应。总体而言,本文提出的基于h2的综合路线为复杂尾矿中铁和稀土的协同回收提供了一种实用的低碳策略,提高了工艺效率和资源利用率。
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引用次数: 0
H2O2-mediated surface chemistry converts a non-selective depressant to galena-selective for efficient Cu–Pb flotation separation h2o2介导的表面化学反应将非选择性抑制剂转化为方铅矿选择性抑制剂,实现了铜铅浮选的高效分离
IF 5 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-01-30 DOI: 10.1016/j.mineng.2026.110110
Yunzhen Hu , Kangjing Wu , Shuai Wang , Zhanfang Cao , Xin Ma , Hong Zhong
The flotation separation of chalcopyrite and galena remains challenging due to their similar surface properties. Here, we demonstrate that H2O2 pretreatment passivates Cu sites (forming Cu–O) while activating Pb sites (forming Pb–O) on mineral surfaces, which transforms sodium 2-(dithiocarboxylato)ethyl acetate (DTCA) from non-selective into a galena-selective depressant. Micro-flotation experiments indicate that with H2O2 oxidation duration of 30 min, pH of 10, and DTCA dosage of 100 mg/g, galena recovery can be reduced to below 5% while maintaining chalcopyrite recovery above 90%. Following oxidation, the adsorption amount of chalcopyrite decreased from 96.54 to 7 mg/g, while that of galena increased from 101.32 to 102.45 mg/g. Multiscale characterizations (FTIR, XPS, ToF-SIMS) indicate that DTCA adsorbs onto the surfaces of chalcopyrite and galena, respectively, via chelation between S–Cu–S and S–Pb–S bonds. Density functional theory (DFT) calculations confirm that oxidation enhanced the adsorption strength of DTCA on the surface of galena, with the adsorption energy shifting from −2.571 to −2.645 eV. Conversely, adsorption strength decreased significantly after oxidation of chalcopyrite, with the adsorption energy shifting from −2.470 to −1.588 eV. Closed-circuit tests on industrial concentrates yielded copper recovery and grade reached 93.13% and 27.43%, respectively, while lead achieved 96.33% recovery and 43.21% grade, with a separation index (SI) of 2.55, surpassing that achieved by the toxic potassium dichromate(K2Cr2O7) method. This study proposes a Cr (VI)-free flotation strategy for efficient Cu–Pb separation, offering a promising alternative to conventional environmentally hazardous methods.
由于黄铜矿和方铅矿的表面性质相似,浮选分离仍然具有挑战性。在这里,我们证明了H2O2预处理钝化了Cu位点(形成Cu - o),同时激活了矿物表面上的Pb位点(形成Pb - o),从而将2-(二硫代羧化钠)乙酸乙酯(DTCA)从非选择性转变为方铅矿选择性抑制剂。微浮选实验表明,在H2O2氧化时间为30 min、pH为10、DTCA用量为100 mg/g的条件下,方铅矿的回收率可降至5%以下,黄铜矿的回收率可保持在90%以上。氧化后,黄铜矿的吸附量从96.54 mg/g下降到7 mg/g,方铅矿的吸附量从101.32 mg/g增加到102.45 mg/g。多尺度表征(FTIR, XPS, ToF-SIMS)表明,DTCA分别通过S-Cu-S和S-Pb-S键之间的螯合作用吸附在黄铜矿和方铅矿表面。密度泛函理论(DFT)计算证实,氧化增强了DTCA在方铅矿表面的吸附强度,吸附能从−2.571 eV转变为−2.645 eV。相反,黄铜矿氧化后吸附强度明显下降,吸附能从−2.470 eV转变为−1.588 eV。工业精矿闭路试验铜回收率和品位分别达到93.13%和27.43%,铅回收率和品位分别达到96.33%和43.21%,分离指数(SI)为2.55,优于有毒重铬酸钾(K2Cr2O7)法。本研究提出了一种无Cr (VI)浮选策略,以实现高效的Cu-Pb分离,为传统的环境危害方法提供了一种有希望的替代方案。
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Minerals Engineering
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