Minerals Engineering最新文献

Comparison of standard and proxy comminution test results and their potential implications for equipment sizing and circuit design 标准和代理粉碎试验结果的比较及其对设备尺寸和电路设计的潜在影响

IF 4.8 2区工程技术

Minerals Engineering Pub Date : 2026-08-11 DOI: 10.1016/j.mineng.2026.110751

Walter Valery, Raoni Lage

引用次数: 0

Prediction of mineral cleavage families using bond-valence-weighted broken-bond density: DBv2.0 software 利用键价加权断键密度预测矿物解理族：DBv2.0软件

IF 4.8 2区工程技术

Minerals Engineering Pub Date : 2026-08-09 DOI: 10.1016/j.mineng.2026.110746

Jianyong He, Linfeng Xu, Shan Li, Li Wang, Zhiyong Gao

引用次数: 0

Novel dual-functional depressant for the selective depression behavior and mechanism of fluorite and calcite in bastnaesite flotation 氟碳石浮选中萤石和方解石选择性抑制的新型双功能抑制剂

IF 4.8 2区工程技术

Minerals Engineering Pub Date : 2026-06-20 DOI: 10.1016/j.mineng.2026.110522

Ruiqi Ge, Wenbao Liu, Yonglun Wang, Bohan Wang, Wengang Liu, Sikai Zhao, Cong Han, Yanbai Shen

{"title":"Novel dual-functional depressant for the selective depression behavior and mechanism of fluorite and calcite in bastnaesite flotation","authors":"Ruiqi Ge, Wenbao Liu, Yonglun Wang, Bohan Wang, Wengang Liu, Sikai Zhao, Cong Han, Yanbai Shen","doi":"10.1016/j.mineng.2026.110522","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110522","url":null,"abstract":"The efficient separation of bastnaesite from calcium-bearing gangue minerals remains a formidable challenge in the rare earth industry due to their similar active sites. In this work, dimethylphosphinic acid aminoethyl sulfonate (NCCS) was rationally designed and synthesized as a novel dual-functional depressant to achieve this selective separation. Micro-flotation results demonstrated that at a dosage of 20 mg/L, NCCS exhibited superior selective depression toward fluorite and calcite across a wide pH range, while maintaining bastnaesite recovery above 80%. In ternary mixed mineral systems, NCCS enabled the production of a high-quality concentrate with a Ce grade of approximately 18% and a recovery exceeding 80%, highlighting its industrial potential. Bubble particle wrap angle, FTIR, zeta potential, and XPS analyses revealed that NCCS chemisorbed on fluorite and calcite via stable trinuclear and dinuclear chelation, respectively, which enhanced surface hydrophilicity and blocked collector (H205) adsorption. Conversely, NCCS only weakly physisorbed on bastnaesite through sulfonic groups due to structural mismatch and electrostatic repulsion, allowing its ready displacement by H205. This study demonstrates that NCCS is a highly selective depressant, offering a promising strategy for the efficient purification of rare earth minerals.","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"26 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148312781","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

Investigation on effect and mechanism of pullulan between flotation separation of chalcopyrite and pentlandite 普鲁兰在黄铜矿与镍黄铁矿浮选分离中的作用及机理研究

IF 4.8 2区工程技术

Minerals Engineering Pub Date : 2026-06-19 DOI: 10.1016/j.mineng.2026.110552

Chunli Zhang, Jinfang Lv, Hongjun Fei, Haiyu Qian, Yitao Liu

{"title":"Investigation on effect and mechanism of pullulan between flotation separation of chalcopyrite and pentlandite","authors":"Chunli Zhang, Jinfang Lv, Hongjun Fei, Haiyu Qian, Yitao Liu","doi":"10.1016/j.mineng.2026.110552","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110552","url":null,"abstract":"Chalcopyrite and pentlandite are challenging to separate efficiently by flotation because of their similar floatability. In this work, the effects of pullulan on the flotation behavior of chalcopyrite and pentlandite, as well as its interaction mechanism, was systematically investigated. Micro-flotation experiments were performed to evaluate the impact of pullulan on the flotation performance of chalcopyrite and pentlandite. Combined with contact angle measurements, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and time-of-flight secondary ion mass spectrometry, the adsorption behavior of pullulan on mineral surfaces and its interaction mechanism were comprehensively analyzed. The results demonstrated that pullulan exhibited a significant depressive effect on pentlandite, while having a relatively minor influence on chalcopyrite. Pullulan markedly decreased the hydrophobicity of the pentlandite surface, whereas the wettability of chalcopyrite was only slightly affected. Oxygen-containing functional groups in pullulan could selectively adsorb onto the pentlandite surface. Specifically, the –OH groups in pullulan interacted with Ni and Fe sites on pentlandite surface, forming a stable organic adsorption layer that occupied the active sites and hindered collector adsorption.","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"47 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148313164","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

Minerals Engineering Pub Date : 2026-06-01 Epub Date: 2026-02-02 DOI: 10.1016/j.mineng.2026.110126

Bo Zhang , Peng Gao , Shuai Yuan , Yanjun Li , Honghao Zhang

{"title":"Feasibility of using tap water instead of deionized water in the high-voltage pulse breakage process of magnetite quartzite","authors":"Bo Zhang , Peng Gao , Shuai Yuan , Yanjun Li , Honghao Zhang","doi":"10.1016/j.mineng.2026.110126","DOIUrl":"10.1016/j.mineng.2026.110126","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"240 ","pages":"Article 110126"},"PeriodicalIF":5.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146096029","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

Advances in phosphate ores flotation: Cleaning reagents, green practices and perspectives 磷矿浮选研究进展：清洁药剂、绿色实践与展望

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-29 DOI: 10.1016/j.mineng.2026.110120

Liuyang Dong , Yanru Cui , Shengzong Lan , Tianfu Zhang , Yuqiang Mao , Peilun Shen , Dianwen Liu

{"title":"Advances in phosphate ores flotation: Cleaning reagents, green practices and perspectives","authors":"Liuyang Dong , Yanru Cui , Shengzong Lan , Tianfu Zhang , Yuqiang Mao , Peilun Shen , Dianwen Liu","doi":"10.1016/j.mineng.2026.110120","DOIUrl":"10.1016/j.mineng.2026.110120","url":null,"abstract":"<div><div>Apatite, a vital calcium-bearing mineral, presents significant challenges in separation due to its complex mineralogy and frequent intergrowth with gangue minerals such as calcite and dolomite. Given that the physical and chemical properties of these associated calcium-bearing mineral impurities are highly similar to those of apatite, the flotation behaviors of the two also exhibit significant convergence. Therefore, traditional separation techniques are difficult to achieve efficient separation of apatite from the calcium-bearing impurities. The difficulties are further compounded by several factors: the analogous surface characteristics between apatite and common gangue minerals lead to poor selectivity of conventional reagents, adversely affecting concentrate quality; the finely disseminated nature of the minerals often results in either inadequate liberation or overgrinding during milling, increasing separation complexity and reducing efficiency; and the mineral’s high chemical reactivity in aqueous environments—where dissolution, hydrolysis, and varying surface composition occur—along with interference from dissolved ions, complicates reagent adsorption and process control. This review paper examines the resource characteristics, physicochemical properties, beneficiation methods, and flotation reagents of phosphate ores, supported by representative case studies. With a focus on elucidating the mechanisms of selective depressants in apatite flotation. This work aims to provide a scientific basis for the efficient and sustainable utilization of phosphate resources, offering insights for future development and enhanced flotation performance to achieve cleaner and more effective phosphate beneficiation.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110120"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072445","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

Crushing operation from a mineralogical class perspective: insights from comminution parameters, crusher performance, and liner wear 从矿物学角度的破碎操作：从粉碎参数，破碎机性能和衬套磨损的见解

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-27 DOI: 10.1016/j.mineng.2026.110100

O. Altun , D. Altun , N.A. Toprak , C.V. Tipici , Z. Dağtarla , E. Savaş

{"title":"Crushing operation from a mineralogical class perspective: insights from comminution parameters, crusher performance, and liner wear","authors":"O. Altun , D. Altun , N.A. Toprak , C.V. Tipici , Z. Dağtarla , E. Savaş","doi":"10.1016/j.mineng.2026.110100","DOIUrl":"10.1016/j.mineng.2026.110100","url":null,"abstract":"<div><div>This research investigates the link between the mineralogical composition of rock types and their response during jaw crushing. The study focuses on the effects of mineralogy on comminution parameters, crushing performance, and jaw liner wear. Six representative rock and ore types—gold, lead–zinc, polymetallic, basalt, limestone, and dolomite—were characterized through a comprehensive testing program, including the drop-weight test (DW, A × b parameter), Los Angeles abrasion (L.A.), Bond crushability work index (B<sub>CWi</sub>), Bond abrasion index (A<sub>i</sub>), and point load test (PLT). Internal relationships between these comminution parameters were established, and regression models were developed to relate each parameter to the mineralogical compositions of the samples. Pilot-scale jaw crusher experiments were then conducted under varied feed size distributions and closed-side settings (CSS) to evaluate crushing responses and measure plate wear as functions of mineralogical composition. In addition, metal composition trials were carried out on the jaw plates to assess how different alloy contents influenced the wear mechanism and to identify the most durable configuration. The pilot test results were further analyzed through Kick’s law, linking the Kick constant (C<sub>k</sub>) to the comminution parameters. Overall, the study demonstrates how mineralogical and metallic characteristics jointly govern size reduction and wear mechanisms, offering a practical framework for predicting crusher performance and supporting operational (OPEX) and capital (CAPEX) optimization in industrial comminution systems.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110100"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146048068","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

Early-stage temperature-dependent leaching kinetics and mechanisms of saprolitic and limonitic nickel laterite ores under atmospheric conditions 大气条件下腐殖岩型和褐铁矿型镍红土矿早期温度依赖性浸出动力学及机制

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-29 DOI: 10.1016/j.mineng.2026.110115

Heewon Kang, Jeongwoo Kim, Jaehoon Lee, Dagyeong Lee, Daniel Ko, Hyunjung Kim

{"title":"Early-stage temperature-dependent leaching kinetics and mechanisms of saprolitic and limonitic nickel laterite ores under atmospheric conditions","authors":"Heewon Kang, Jeongwoo Kim, Jaehoon Lee, Dagyeong Lee, Daniel Ko, Hyunjung Kim","doi":"10.1016/j.mineng.2026.110115","DOIUrl":"10.1016/j.mineng.2026.110115","url":null,"abstract":"<div><div>This study investigates the early-stage leaching behavior and temperature-dependent kinetics of saprolitic laterite (SL) and limonitic laterite (LL) ores under atmospheric acid leaching conditions at various temperatures to capture early-stage dissolution of nickel, magnesium, and iron. Both ores exhibited temperature-dependent increases in metal extraction, with highest extractions observed at 45 °C for saprolitic laterite ore and 65 °C for limonitic laterite ore. Structural analysis of leach residues revealed that the highest extractions corresponded to progressive collapse of key minerals—lizardite in saprolitic laterite ore and goethite and clinochlore in limonitic laterite ore. Kinetic analysis using a shrinking core model showed that solid product layer diffusion was the dominant rate-limiting step for all metals in both ores. Activation energies exceeding 56 kJ/mol for all metals suggested diffusion resistances, likely due to the formation of silica-rich product layers. This study clarifies the mineral leach mechanisms governing early-stage leaching in saprolitic laterite and limonitic laterite ores and provide a basis for optimizing selective nickel leaching.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110115"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072443","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

Flotation of copper mineral fines and aggregates using novel bio-inspired Vitamin E xanthate collectors 利用新型仿生维生素E黄药捕收剂浮选铜矿细粒和聚集体

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-26 DOI: 10.1016/j.mineng.2026.110103

Regina B.D. de Medeiros , Wei Sung Ng , Tina Hsia , San H. Thang , George V. Franks

{"title":"Flotation of copper mineral fines and aggregates using novel bio-inspired Vitamin E xanthate collectors","authors":"Regina B.D. de Medeiros , Wei Sung Ng , Tina Hsia , San H. Thang , George V. Franks","doi":"10.1016/j.mineng.2026.110103","DOIUrl":"10.1016/j.mineng.2026.110103","url":null,"abstract":"<div><div>This paper investigates the use of novel bio-based collectors D-α-tocopherol polyethylene glycol 400 succinate xanthate (TPGS-X) and α-tocopherol ethyl xanthate (VitE-X) in the flotation of chalcopyrite fine particles and aggregates, as an alternative replacement for conventional xanthate collectors. Potassium amyl xanthate (PAX) was used as a conventional collector for comparison. Commercial anionic polyacrylamide (APAM) flocculants were applied to selectively aggregate the fines with the aim of improving recovery via the formation of larger aggregates. The performance of all collectors was evaluated through the flotation recovery and grade of both the fines and aggregated particles. Contact angle tests were also performed to analyse the effect of the reagents on the hydrophobicity of the chalcopyrite surface. The experimental results showed that TPGS-X provided the best chalcopyrite recovery and grade amongst all collectors, followed by VitE-X, although quartz was also recovered via entrainment. PAX addition improved the grade of the concentrates but did not significantly affect the recovery of the valuable particles. Increasing TPGS-X dosage enhanced chalcopyrite grade from ∼ 43 % to 54 % and recovery from ∼ 48 % up to 82 %. The addition of APAM for fines aggregation was also found to reduce chalcopyrite flotation recovery and grade due to entrapment effects. Contact angle experiments demonstrated that all collectors increased the hydrophobicity of the chalcopyrite surface, but treatment with APAM reduced the effectiveness of the collectors. This potentially suggests that the surface hydrophobicity has a more dominant effect on the flotation efficiency than the aggregate size for the chalcopyrite-quartz system. Finally, both novel TPGS-X and VitE-X were found to be able to improve the flotation of fine particles, but the flotation of aggregates remains challenging for the investigated system.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110103"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146048070","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

Effect of CMC and MBS on the separation of chalcopyrite and galena in seawater CMC和MBS对海水中黄铜矿和方铅矿分离的影响

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-27 DOI: 10.1016/j.mineng.2026.110112

Wanqing Li , Yubiao Li , Jialong Zhao , Zhonghong Wang , Wen Chen

{"title":"Effect of CMC and MBS on the separation of chalcopyrite and galena in seawater","authors":"Wanqing Li , Yubiao Li , Jialong Zhao , Zhonghong Wang , Wen Chen","doi":"10.1016/j.mineng.2026.110112","DOIUrl":"10.1016/j.mineng.2026.110112","url":null,"abstract":"<div><div>The separation of chalcopyrite from galena attracts much attention during the flotation process due to their similar floatability, especially in seawater. This study systematically investigated the effects of carboxymethyl cellulose (CMC) and sodium metabisulfite (MBS) on the Cu-Pb flotation separation in seawater. Flotation results indicated that the galvanic interaction between chalcopyrite and galena decreased the recoveries of chalcopyrite and galena by 2 ∼ 6 % and 6 ∼ 12 %, respectively. Further addition of combined depressant including CMC and MBS resulted in a non-floatable galena but affected chalcopyrite flotation lightly, showing the highest selectivity index of 19.11. Metal ion releasing evolution and X-ray Photoelectron Spectroscopy (XPS) results demonstrated that galvanic interaction enhanced the oxidation of galena surface where the adsorption of CMC and MBS was strengthened, forming hydrophilic species and a tight water film, thereby inhibiting the flotation of galena. Differently, CMC and MBS influenced chalcopyrite surface slightly. Further electrochemical investigation confirmed that the electrochemical reactivity on galena surface was reduced significantly due to the introduced depressants, preventing the reaction between the active sites on galena surface and IPTEC molecules. In contrast, the depressant-treated chalcopyrite surface remained at a relatively high electrochemical reactivity, which was beneficial to the adsorption of IPTEC on chalcopyrite surface to form an uneven hydrophobic film. This study therefore provides a promising orientation by adding CMC and MBS to achieve the efficient and environmental flotation separation of chalcopyrite and galena in seawater system.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110112"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072451","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