Minerals Engineering最新文献

{"title":"Depression mechanism of shikonin on copper-ion-activated sphalerite surfaces: Implications for selective flotation separation","authors":"Junnan Qu ,&nbsp;Zhicong Wei ,&nbsp;Yang Liu ,&nbsp;Qihao Gui ,&nbsp;Mengyu Li ,&nbsp;Yan Huan ,&nbsp;Jianjun Fang ,&nbsp;Haiyun Xie ,&nbsp;Dianwen Liu","doi":"10.1016/j.mineng.2025.109619","DOIUrl":"10.1016/j.mineng.2025.109619","url":null,"abstract":"<div><div>The application potential of shikonin as a natural organic depressant in the flotation separation of sulfide ores has not yet been fully explored. In this study, we systematically investigated the depression mechanism of shikonin on the flotation behavior of sphalerite and copper-activated sphalerite using micro-flotation tests, contact angle, zeta potential analysis, X-ray photoelectron spectroscopy (XPS), and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The results demonstrate that shikonin exhibits significant depression effects on both sphalerite and copper-activated sphalerite. Actual ore tests yielded copper concentrates with grades of 18.71 % Cu and 5.42 % Zn, accompanied by recoveries of 85.23 % Cu and 13.27 % Zn. Zeta potential and contact angle measurements revealed that shikonin significantly reduces the hydrophobicity of sphalerite by modifying its surface charge characteristics and wettability. XPS and ToF-SIMS analyses confirmed chelation reactions between shikonin and copper/zinc surface sites, with the resulting complexes adsorbing onto sphalerite surfaces to effectively block xanthate collector adsorption pathways. In this study, it was found that SK chemically adsorbed on Zn²⁺ and Cu²⁺ sites on the mineral surface through oxygen-containing functional groups (hydroxyl (<img>OH) and carbonyl (C<img>O)) to form stable Zn<img>O<img>C and Cu<img>O<img>C coordination bonds, leading to the depression of copper ion activation on sphalerite. This study is the first to elucidate the mechanism of shikonin in sphalerite flotation, providing new insights into applying natural organic compounds as eco-friendly depressants in mineral flotation. It also establishes theoretical foundations and technical pathways for developing green and efficient sulfide separation processes.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109619"},"PeriodicalIF":4.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614418","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}

{"title":"From iron concentrate to clean steel: A green short-process production technology centered on preparing high-purity iron concentrate","authors":"Wencheng Ge ,&nbsp;Jie Liu ,&nbsp;Tianjiao Chang ,&nbsp;Yanjun Li ,&nbsp;Yongsheng Sun ,&nbsp;Shumin Zhang ,&nbsp;Yuexin Han ,&nbsp;Yimin Zhu","doi":"10.1016/j.mineng.2025.109617","DOIUrl":"10.1016/j.mineng.2025.109617","url":null,"abstract":"<div><div>With the accelerating shift toward high-end and low-carbon steel products, high-purity iron concentrates (HPIC) have become indispensable raw materials. In this study, a green and short-process clean steel-based production process route was developed, and the preparation of HPIC was guided by a new evaluation system based on process mineralogical characteristics. The evaluation system was established and validated by characterizing 10 magnetite-based iron concentrates from different deposits in China (including chemical composition, particle size, and paragenesis type). A combined pre-concentration, multi-stage grinding–weak magnetic separation, electromagnetic separation, and reverse flotation (PCMF) flowsheet was optimized to yield UPIC with TFe &gt; 71.8 % and SiO₂ &lt; 0.3 % (acid-insoluble &lt;0.2 %) and HPIC with TFe &gt; 70 % and SiO₂ &lt; 2 %, achieving overall recoveries above 93 %. The UPIC and HPIC were further converted into direct reduced iron in a tunnel kiln and then smelted in a low-carbon electric furnace, delivering pure iron with TFe &gt; 99.90 %, suitable for clean steel base applications. An energy-consumption model quantifies that replacing conventional feed with HPIC reduces steelmaking energy demand, demonstrating significant potential for CO₂ mitigation. This integrated pathway provides a scalable strategy for high-efficiency, low-carbon, clean steel production using domestic iron ores.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109617"},"PeriodicalIF":4.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614421","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}

{"title":"Sliding interaction and attachment efficiency of rising bubbles in a mineral particle-laden bed","authors":"Guihua Zheng ,&nbsp;Anh V Nguyen ,&nbsp;Tuan AH Nguyen ,&nbsp;Ngoc N Nguyen ,&nbsp;Liqiang Ma","doi":"10.1016/j.mineng.2025.109596","DOIUrl":"10.1016/j.mineng.2025.109596","url":null,"abstract":"<div><div>Flotation kinetics are fundamentally governed by bubble-particle collision, attachment, and detachment interactions. This study presents a novel single-bubble flotation approach and a mathematical framework based on a mineral-laden bed to analyse and quantify the attachment interaction. It directly links the flotation rate constant to bubble-particle attachment efficiency by excluding the effects of collision and detachment interactions, thus creating favourable conditions for rapid flotation kinetics. To achieve this, simple experiments were designed with single bubbles introduced at the bottom of a Hallimond tube, rising through a stationary mineral particle bed. We developed, compared, and validated mathematical models incorporating analytical (non-inertial) and numerical (inertial) solutions for Stokesian and non-Stokesian particles. Using the non-inertial model for sliding time, we derived an induction time model and an attachment efficiency model to establish a connection with flotation kinetics data. Single-bubble flotation experiments confirmed the relevance of macroscopic flotation and microscopic bubble-particle attachment mechanisms. Our numerical and analytical analyses confirmed that the sliding time model is influenced by bubble size, while five approximate models showed differences regarding particle size. Notably, within the range of theoretical applicability, fluid drag exerted a more substantial influence on sliding time than particle inertia. The kinematic parameters of particle motion on the bubble surface were successfully quantified using our models. This novel flotation system and tool provide an integrated experimental and theoretical framework to investigate bubble-particle attachment and collection mechanisms, offering valuable insights for advancing flotation theory and developing high-efficiency flotation equipment.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109596"},"PeriodicalIF":4.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613924","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}

{"title":"Machine learning-driven intelligent screening system for synergistic compound reagent in coal slime flotation","authors":"Deke Zhang ,&nbsp;Ao Li ,&nbsp;Jinyong Li ,&nbsp;Yangchao Xia ,&nbsp;Budeebazar Avid ,&nbsp;Lucai Long ,&nbsp;Yuan Ping ,&nbsp;Yongchao Piao ,&nbsp;Yaowen Xing ,&nbsp;Xiahui Gui","doi":"10.1016/j.mineng.2025.109601","DOIUrl":"10.1016/j.mineng.2025.109601","url":null,"abstract":"<div><div>To address the technical bottlenecks of low screening efficiency and complex action mechanisms in the design of compound collectors for coal slime flotation, this study proposes a machine learning-based intelligent screening method for compound reagents. By constructing a dataset comprising 950 experimental groups and integrating the XGBoost ensemble algorithm with interpretability analysis tools, the method achieves high-accuracy prediction of flotation performance (training set MAE = 0.4592, validation set MAE = 0.4923, testing set MAE = 0.5268). SHAP feature importance analysis indicates that reagent type has the most significant impact on combustible recovery, while reagent mixing ratios also modulate model predictions to a certain extent. Further analysis based on SHAP interaction values reveals that certain collector combinations exhibit synergistic enhancement effects at specific mixing ratios, indicating that the model can effectively identify and decouple nonlinear coupling behaviors within mixed reagent systems. At the mechanistic level, the “adsorption-complementarity model” and “molecular assembly effect model” are proposed to elucidate the cooperative mechanisms: polar components selectively anchor hydrophilic sites on coal surfaces via hydrogen bonding, while non-polar components self-assemble along molecular backbones to form interfacial hydrophobic structures, thereby synergistically enhancing overall hydrophobicity. The bidirectional prediction framework integrates forward performance prediction with reverse optimization of reagent formulations based on target functions, enabling controllable design of compound schemes through interpretability analysis. Compared with traditional trial-and-error methods, this strategy significantly reduces experimental workload and greatly improves the screening efficiency of compound collectors. This approach overcomes the limitations of empirical and costly traditional design methods, providing a data-driven paradigm for intelligent collector optimization in complex coal slime systems. The results indicate that the model exhibits good generalization ability under single-coal conditions; however, the microscopic interaction mechanisms among reagents require further validation, and its applicability across different coal types remains limited. Future work may involve the integration of multi-source flotation data to enhance reagent system modeling and promote the development of intelligent mineral processing technologies.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109601"},"PeriodicalIF":4.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614416","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}

{"title":"Recovery of the Co(II) ions from thiocyanate aqueous solutions using cellulose triacetate/tri-n-octylamine/tributyl phosphate polymer inclusion membranes","authors":"Zahra Askarian Chaijan ,&nbsp;Salar Bahrami ,&nbsp;Leila Dolatyari ,&nbsp;Bahman Farajmand ,&nbsp;Mohammad Reza Yaftian","doi":"10.1016/j.mineng.2025.109618","DOIUrl":"10.1016/j.mineng.2025.109618","url":null,"abstract":"<div><div>A polymer inclusion membrane (PIM) bearing desired physical, mechanical, and extraction properties towards cobalt(II) ions as their anionic thiocyanate complexes, composed of 40 wt% of cellulose triacetate (CTA), 25 wt% of the extractant tri-<em>n</em>-octylamine (TOA), and 35 wt% of tributyl phosphate (TBP) as the plasticizer, is introduced. A 3.5 cm dimeter segment of this PIM extracts quantitatively cobalt ions (initial concentration 26 mg L⁻¹) from 50 mL solution adjusted to 0.1 mol L⁻¹ sodium thiocyanate and pH 4 (acetate buffer), after 2 h shaking (200 rpm) on an orbital shaker, and at room temperature. The back-extraction process is performed by 16 h by contacting the loaded PIM with 50 mL solution of ethylenediaminetetraacetic acid (EDTA) (0.25 mol L⁻¹) regulated to pH 8 (phosphate buffer). The investigated PIM presents selective attitude towards Co(II) with respect to Cd(II), Ni(II), Pb(II), Mn(II), Cr(III), Al(III), and Cr(VI) ions. Analysis of the extraction data confirms the formation of the [(TOAH⁺)₂(Co(SCN)₄²⁻)] complex as the extracted species. The maximum PIM’s capacity is appraised to be 19.75 mg per g of the PIM. Pseudo-second order and Langmuir models describe well respectively the kinetics and the isotherm of the process.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109618"},"PeriodicalIF":4.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614422","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}

{"title":"An optimized recovery of cobalt and tungsten carbide (WC) from a binary-phase WC-6 wt%Co cemented tungsten carbide hardmetal using design of experiments","authors":"A. Shemi ,&nbsp;S. Ndlovu ,&nbsp;N. Sacks","doi":"10.1016/j.mineng.2025.109597","DOIUrl":"10.1016/j.mineng.2025.109597","url":null,"abstract":"<div><div>Tungsten extraction from scheelite and wolframite ores is a well-established process. However, continuous exploitation has led to more complex ore compositions and lower WO₃ concentrations in tungsten concentrates, posing significant challenges for sustainable extraction. Primary and secondary tungsten sources often contain valuable metals such as Sn, Ta, Nb, Mo, Sc, and Co; however, current industrial processes focus predominantly on tungsten recovery, neglecting other metals and compromising sustainability. This study aimed to develop a process for the co-recovery of tungsten carbide (WC), cobalt (Co), and tungsten (W) from cemented carbide scrap using a sulphate-based leaching system. A statistical Design Of Experiments (DOE) approach was employed to screen and optimize process variables, including acid concentration, leaching time, solid-to-liquid ratio, temperature, and agitation rate. Characterization revealed the material contained 85.95 wt% W, 8.77 wt% C, and 5.28 wt% Co. Optimal leaching occurred with 2 M H₂SO₄, a 1:10 S/L ratio, at 82 °C, and 750 rpm agitation, achieving 25.13 % Co extraction in 10 h and 97.6 % after 4.2 days. Increasing the temperature to 92 °C improved extraction, reaching 31.7 % in 10 h. Temperature was identified as the primary factor influencing cobalt dissolution kinetics. The recovered WC powder consisted of well-defined, fine particles comparable in quality to ‘virgin’ WC. Electroplated cobalt achieved 91.9 % current efficiency over 3 h, producing metal with 98.0 wt% purity and good morphological integrity. Synthetic tests confirmed that tungsten recovery as scheelite (CaWO₄) is highly feasible.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109597"},"PeriodicalIF":4.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614423","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}

{"title":"Integrated experimental and thermodynamic modelling study of phase equilibria in the “CuO0.5”-PbO-AlO1.5 system in equilibrium with Cu/Pb metal","authors":"Georgii Khartcyzov,&nbsp;Maksym Shevchenko,&nbsp;Evgenii Nekhoroshev,&nbsp;Evgueni Jak","doi":"10.1016/j.mineng.2025.109620","DOIUrl":"10.1016/j.mineng.2025.109620","url":null,"abstract":"<div><div>This study investigated the phase equilibria in the “CuO_0.5”-PbO-AlO_1.5 system in equilibrium with Cu/Pb metal as part of the integrated experimental and thermodynamic modelling study of phase equilibria in the Cu-Pb-Zn-Fe-Ca-Si-Al-Mg-O-S-(As, Sn, Sb, Bi, Ag, Au, Ni, Cr, Co and Na) gas/oxide liquid/matte/speiss/ metal/solids system supporting the development and optimisation of pyrometallurgical processes. The experimental approach involved the equilibration and quenching technique followed by the electron probe X-ray microanalysis (EPMA). The resulting experimental data described the liquidus of the “CuO_0.5”-PbO-AlO_1.5 system in equilibrium with Cu/Pb metal, including corundum (Al₂O₃), PbAl₁₂O₁₉, PbAl₂O₄, Pb₉Al₈O₂₁, massicot (PbO), cuprite (Cu₂O), delafossite (CuAlO₂) and copper plumbite (Cu₂PbO₂) primary phase fields. The experiments were conducted as part of the integrated experimental and thermodynamic modelling study aimed to obtain a self-consistent set of parameters of the thermodynamic model for all phases of the “CuO_0.5”-PbO-AlO_1.5 system in equilibrium with Cu/Pb metal and its subsystems, consistent with major 20 component system. The liquidus surface of the “CuO_0.5”-PbO-AlO_1.5 system over the complete range of temperatures and concentrations was presented for the first time.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109620"},"PeriodicalIF":4.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614420","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}

{"title":"Study on the mechanism of the effect of plasma modified APAM on the sedimentation of kaolinite particles","authors":"Yizhe Yang,&nbsp;Lijun Liu,&nbsp;Hanyu Zhao,&nbsp;Liang Han,&nbsp;Bo Hu,&nbsp;Wei Yu,&nbsp;Zhanglei Zhu,&nbsp;Zhen Li","doi":"10.1016/j.mineng.2025.109592","DOIUrl":"10.1016/j.mineng.2025.109592","url":null,"abstract":"<div><div>In coal slime water treatment, traditional anionic polyacrylamide (APAM) faces challenges including difficulties in balancing charge density with hydrolysis degree and inadequate hydrophilicity. This study developed a plasma-modified APAM (P-APAM) and systematically investigated its enhancement mechanism for kaolinite particle flocculation and sedimentation. Experiments were performed with 5–20 s plasma treatments on APAM solutions, analyzing P-APAM properties such as viscosity, pH, conductivity, molecular chain structure, and functional group configuration. Parallel flocculation-sedimentation tests evaluated kaolinite treatment performance through settling velocity, supernatant turbidity, floc size, and Zeta potential measurements. Results revealed that 5 s plasma treatment strengthened hydrogen bonding while altering oxygen-containing functional group composition and arrangement in P-APAM molecules. The treatment promoted oxidative degradation of hydrophobic groups (–CH₃/–CH₂-), boosting hydration capacity and hydrophilicity while optimizing molecular chain flexibility and surface adaptability. The modified P-APAM formed compact floc structures (SK value = 0.612), achieving superior sedimentation rates, larger floc sizes, and enhanced flocculation efficiency at reduced dosages. Comprehensive experimental analysis confirmed that plasma-modified P-APAM substantially improved kaolinite flocculation and sedimentation performance. This research presents an innovative plasma-modified flocculant approach for clay mineral treatment in slime water, establishing an effective technical pathway for developing high-performance green flocculant systems with significant reference value for sustainable mineral processing.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109592"},"PeriodicalIF":4.9,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604884","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}

{"title":"New insights into the structure-activity relationship of the N containing heterocyclic activators for the lime depressed molybdenite flotation","authors":"Qiqiao Liu ,&nbsp;Wei Chen ,&nbsp;Ying Wang ,&nbsp;Zihan Ye ,&nbsp;Sheng Liu ,&nbsp;Jiang Yu ,&nbsp;Guangyi Liu","doi":"10.1016/j.mineng.2025.109605","DOIUrl":"10.1016/j.mineng.2025.109605","url":null,"abstract":"<div><div>The molybdenite is a typical layered sulfide mineral with extremely high natural hydrophobicity and therefore it is extracted by flotation technology. However, molybdenite is usually depressed by the flotation regulator lime and needs activization. In this study, we introduced 10 kinds of N-heterocycles to systematically study the structure–activity relationship of the N-heterocyclic flotation activators for the lime inhibited molybdenite, mainly through flotation tests, surface detection and DFT calculation. The flotation results showed that the lime almost irreversibly depressed the molybdenite flotation when using kerosene as collector alone, and adding these N-heterocyclic reagents effectively helped molybdenite regain its high flotability. When lime was used as 120 mg/L and kerosene at 30 mg/L, the activator effect could be ranked as: 3MI ≈ 2Phl ≈ 5 MB ≈ 5MI ≈ TTA &gt; IND ≈ BTA ≈ Bzlm ≈ 5PhTH &gt; 2MZ, which was decided by the recovery increment. The surface detection indicated that the depression mechanism of the lime was mainly through the adsorption of the CaOH⁺, Ca²⁺, Ca(OH)₂ on the basal plane of molybdenite crystal, thus the chelating affinity of the N-heterocyclic reagents towards the lime components decided its activation ability. The DFT calculation suggested that the N-heterocycles was also able to interact with the Mo sites exposed by surface oxidation on the basal plane, thus the reactivity towards the Mo as well as the steric configuration also determined the activator effect. Therefore, the chelating ability of the activator towards the lime components/exposed Mo sites and the steric configuration of the rest alkyl group both contribute to the structure–activity relationship.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109605"},"PeriodicalIF":4.9,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604887","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}

{"title":"An overview of bioprocess based recovery and recycling techniques for battery waste management: Transitioning from environmental hazard to sustainability","authors":"Shatrupa Singh ,&nbsp;Deenan Santhiya ,&nbsp;Jai Gopal Sharma","doi":"10.1016/j.mineng.2025.109598","DOIUrl":"10.1016/j.mineng.2025.109598","url":null,"abstract":"<div><div>Battery waste poses ecological, economic and health risks due to rising usage and improper disposal. Accumulation in landfills releases toxic compounds, while valuable metals remain unrecycled. Conversely, battery waste is also characterized as secondary resource because it has a higher metal content than primary ores. Conventional approaches, such as pyrometallurgy and hydrometallurgy are expensive, energy intensive, and polluting. This shift highlights the need for sustainable resource management to recover constituents from spent battery materials, as depletion of metallic resources is one of the most critical environmental and socioeconomic concerns Bioprocesses such as bioleaching, biosorption, biomineralization and bio-electrochemical systems are highlighted in this review as sustainable, selective recovery alternatives. This review explores the dual role of agricultural waste for waste valorization and metal extraction aligning with circular economy principles. Mechanistic understanding of microbe-metal and agricultural waste interactions is discussed in detail, emphasizing on sequential integration of bioprocesses, hybrid systems combining bioprocesses with conventional techniques and improving recovery efficiency. Progress, challenges and barriers in scalability are discussed, addressing toxicological concerns of emerging battery contaminants. The review promotes bio-based eco-friendly recovery processes, with vision to achieve reduced environmental impact, improved metal recovery and efficient integration of circular economy of resources.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"233 ","pages":"Article 109598"},"PeriodicalIF":4.9,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596687","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}