Minerals Engineering最新文献_第5页

Selective extraction of lithium from the clay-type lithium ore by a novel process of blank roasting and CaO-aided alkaline leaching

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-23 DOI: 10.1016/j.mineng.2025.109252

Shuai Zhao , Fancheng Meng , Yahui Liu , Jian Zhang , Yongchao Wang , Xile Tian , Xiaoxia Li , Desheng Chen , Lina Wang , Tao Qi

{"title":"Selective extraction of lithium from the clay-type lithium ore by a novel process of blank roasting and CaO-aided alkaline leaching","authors":"Shuai Zhao , Fancheng Meng , Yahui Liu , Jian Zhang , Yongchao Wang , Xile Tian , Xiaoxia Li , Desheng Chen , Lina Wang , Tao Qi","doi":"10.1016/j.mineng.2025.109252","DOIUrl":"10.1016/j.mineng.2025.109252","url":null,"abstract":"<div><div>With the explosive demand for lithium and the depletion of high-quality lithium resources, the extraction and utilization of lithium from clay-type lithium ore have become increasingly significant. In this research, a clay-type lithium ore composed of diaspore, goethite, kaolinite, illite, and cookeite (LiAl<sub>4</sub>(AlSi<sub>3</sub>O<sub>10</sub>)(OH)<sub>8</sub>) was used, and lithium mainly situated in the structure of cookeite. To destroy the cookeite structure and selectively extract lithium from it, a novel and green process of blank roasting and CaO-aided alkaline leaching was proposed. After roasting at 800 °C and leaching with CaO/roasting powder mass ratio of 0.35 and NaOH concentration of 3 g/L at 100°C, the leaching efficiency of Li could be 82.84 %, while those of Al, Si, Mg, and Fe were only 0.030 %, 0.013 %, 0 %, and 0 %, respectively. Li<sub>2</sub>CO<sub>3</sub> with a purity of 99.85 % was precipitated after the purification of the leaching solution by a solvent extraction method. In the view of structural transformation, cookeite was decomposed and transformed into LiAlSi<sub>2</sub>O<sub>6</sub> in roasting, which was then disrupted by OH<sup>–</sup> and released lithium in CaO-aided alkaline leaching, along with the formation of solid Ca<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>·6H<sub>2</sub>O and Ca<sub>3</sub>Al<sub>2</sub>SiO<sub>4</sub>(OH)<sub>8</sub>. Thermodynamic equilibrium calculation results indicate that adding CaO and NaOH and maintaining the pH at 12.6 ∼ 12.9 can immobilize Al and Si and inhibit the leaching of Mg, Fe and Ca, which is the key for the efficient and selective extraction of lithium.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"227 ","pages":"Article 109252"},"PeriodicalIF":4.9,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143675581","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

Effects of different fluid inclusions content on flotation behavior of quartz particles and its mechanism

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-22 DOI: 10.1016/j.mineng.2025.109253

Yuhao He , Zijie Ren , Yuhan Song , Qi Deng , Lu Xiang

{"title":"Effects of different fluid inclusions content on flotation behavior of quartz particles and its mechanism","authors":"Yuhao He , Zijie Ren , Yuhan Song , Qi Deng , Lu Xiang","doi":"10.1016/j.mineng.2025.109253","DOIUrl":"10.1016/j.mineng.2025.109253","url":null,"abstract":"<div><div>The content of fluid inclusions in quartz particles varies within the same ore deposit. Utilizing the DECA (Double Extreme Case Analysis) methodology developed by the research team, quartz particles were classified into three distinct categories based on fluid inclusion content: transparent particles (TT), non-transparent particles (NT), and semitransparent particles (ST). Systematic investigation of collection efficiency and adsorption mechanisms was conducted through flotation experiments combined with advanced analytical techniques, including XRD, ICP-MS, FTIR, XPS and zeta potential analysis. Using hydrofluoric acid (HF) as a pH regulator, a mixed collector system comprising an anionic collector (AQY) and a cationic collector (CQY) achieved effective separation of quartz sand particles with varying fluid inclusion contents at pH 2. Compared to mixed minerals, the proportion of TT in the sink product increased from 48% to 70%, an increase of 22 percentage points. The proportion of NT decreased from 12% to 5%, with a removal rate of 58.33%. FTIR and XPS results revealed that when AQY collector was added alone, it could adsorb on activated S3 (NT) surface but hardly detected on S1 (TT) surface at pH 2. However, they all were found on both TT and NT surface when mixed AQY/CQY collectors were introduced as collectors. Notably, zeta potential and contact angle measurements revealed stronger adsorption affinity of the mixed collectors toward NT surfaces compared to TT surfaces. Based on these findings, a synergistic adsorption model for the AQY/CQY system was established.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"227 ","pages":"Article 109253"},"PeriodicalIF":4.9,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143675583","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

Integrating local and global information for image deblurring in flotation froth scenes

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-21 DOI: 10.1016/j.mineng.2025.109245

Yongqi Gan, Jianwang Gan, Guoying Zhang

引用次数: 0

The use of compressed exponentials for kinetic modelling of batch flotation

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-18 DOI: 10.1016/j.mineng.2025.109246

L. Vinnett , K.E. Waters

{"title":"The use of compressed exponentials for kinetic modelling of batch flotation","authors":"L. Vinnett , K.E. Waters","doi":"10.1016/j.mineng.2025.109246","DOIUrl":"10.1016/j.mineng.2025.109246","url":null,"abstract":"<div><div>Different first-order models have been used to characterize flotation kinetics due to their simple interpretation and mathematical treatment. However, these representations are not applicable to flotation responses that do not present decreasing recovery rates over time. Some erratic kinetic responses present close to S-shaped dependency as a function of time, indicating a delayed separation. These trends can be modelled by a variety of approaches; however, compressed exponentials of the type exp(−<em>a t <sup>b</sup></em>), with <em>b</em> ≥ 1, are attractive due to the fact that the classical first-order model is a special case. This work analyses size-by-size batch kinetic responses of Cu and Pb minerals in their separation from a complex ore, showing the transition towards deterministic first-order rate constants in the coarser size classes, finally obtaining compressed exponentials in the −212 +150 μm fraction [<em>R</em> = <em>R</em><sub>∞</sub>(1-exp(−<em>a t <sup>b</sup></em>)), with <em>R</em><sub>∞</sub> the maximum recovery]. As the derivatives of these exponentials are zero at <em>t</em> = 0, this result indicates the delayed nature of the separation of coarse particles for this process.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"226 ","pages":"Article 109246"},"PeriodicalIF":4.9,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642811","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 surface chemical heterogeneity on bubble attachment probability: Implications for coarse particle flotation 表面化学异质性对气泡附着概率的影响：对粗颗粒浮选的影响

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-17 DOI: 10.1016/j.mineng.2025.109251

Xianggen Chen , Ming Guo , Yijun Cao , Chao Li

{"title":"Effect of surface chemical heterogeneity on bubble attachment probability: Implications for coarse particle flotation","authors":"Xianggen Chen , Ming Guo , Yijun Cao , Chao Li","doi":"10.1016/j.mineng.2025.109251","DOIUrl":"10.1016/j.mineng.2025.109251","url":null,"abstract":"<div><div>Coarse particle flotation for gangue rejection at an early stage has received extensive attentions in mineral processing. Coarse particles often bear chemically heterogeneous surface with low exposure rate of valuable minerals. To date, the bubble attaching behavior at such heterogeneous surface remains unclear, which hinders the process optimization for coarse particle flotation. Therefore, this study investigated the attachment probability of bubbles of three sizes on four inclined hydrophilic surfaces containing discretely distributed hydrophobic dots. Note that these surfaces had the same area fraction of hydrophobic phase but different distribution pattern in terms of hydrophobic dot size and their distribution density. For small bubble of 550 μm in diameter, it was observed that the distribution density of the hydrophobic dots dominated the attachment probability. As the bubble size increased to 750 μm and 950 μm, bigger hydrophobic dot size could improve the bubble attachment probability. Further study found that the surface chemical heterogeneity and bubble size jointly determined the bubble adhesion force which is directly related to the attachment probability. This study reveals the matching mechanism between the exposed features of heterogeneous surface and bubble size, which would facilitate the process optimization for coarse particle flotation.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"226 ","pages":"Article 109251"},"PeriodicalIF":4.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637350","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

Comparative study of limonitic and saprolitic laterite ores on the leaching characteristics under atmospheric pressure

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-15 DOI: 10.1016/j.mineng.2025.109250

Hee-Eun Jeong , Heewon Kang , Sowon Choi , Hyunjung Kim

{"title":"Comparative study of limonitic and saprolitic laterite ores on the leaching characteristics under atmospheric pressure","authors":"Hee-Eun Jeong , Heewon Kang , Sowon Choi , Hyunjung Kim","doi":"10.1016/j.mineng.2025.109250","DOIUrl":"10.1016/j.mineng.2025.109250","url":null,"abstract":"<div><div>Sulfuric acid leaching as a function of acid dosage (200–800 kg H<sub>2</sub>SO<sub>4</sub>/dmt) and time (1–168 h) was performed on saprolitic laterite ores (SL) and limonitic laterite ores (LL) from different regions to characterize and compare the leaching behavior of saprolitic and limonitic laterite ores at room temperature and atmospheric pressure. The major mineral of SL is antigorite/lizardite, whereas the main minerals of LL are goethite and talc. The metal leaching efficiency of both SL and LL increased with rising acid dosage, and leaching behavior was related to acid consumption. The nickel leaching efficiency and rate constant of SL were higher than that of LL under the same acid dosage condition. XRD analysis on the residue after leaching confirmed that serpentine is easier to leach than goethite and talc due to the mineral structure. Kinetic analyses showed that the leaching of laterite ores employed in the present work was well fitted to the Shrinking Core Model with the rate-determining step of a solid product layer diffusion.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"226 ","pages":"Article 109250"},"PeriodicalIF":4.9,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628047","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

Solid waste binder cemented dihydrate phosphogypsum aggregate to prepare backfill material

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-15 DOI: 10.1016/j.mineng.2025.109249

Yonghui Zhao , Xuhong Zhou , Qishi Zhou , Fangjie Cheng , Wenxuan Guo

{"title":"Solid waste binder cemented dihydrate phosphogypsum aggregate to prepare backfill material","authors":"Yonghui Zhao , Xuhong Zhou , Qishi Zhou , Fangjie Cheng , Wenxuan Guo","doi":"10.1016/j.mineng.2025.109249","DOIUrl":"10.1016/j.mineng.2025.109249","url":null,"abstract":"<div><div>The accumulation of large quantities of dihydrate phosphogypsum (DPG) presents notable environmental challenges and obstacles to the sustainable growth of the phosphogypsum industry. Utilizing DPG as a backfill aggregate represents an effective approach to enhance its utilization rate. This study aims to prepare backfill materials by consolidating DPG with industrial waste granulated blast furnace slag (GBFS) and calcium carbide residue (CCR) as binders. The fluidity, bleeding rate, setting time, strength, and water resistance of the backfill materials were tested. Additionally, their phase composition, microstructure, hydration mechanisms, and environmental behavior were analyzed. The results showed that: the optimized backfill material exhibited high fluidity, a lower bleeding rate, and a significantly reduced setting time. GBFS and CCR greatly improved the strength and water resistance, with a 28-day compressive strength of 40.86 MPa, a water absorption rate of 4.89 %, and a softening coefficient of 0.81. CCR accelerated the formation of ettringite crystals, enhancing early strength. As the curing period extended and the GBFS content increased, a stable three-dimensional network structure formed, optimizing pore structure and improving performance. Furthermore, the combination of GBFS and CCR effectively neutralized residual acids in DPG, reducing phosphorus and heavy metal elements leaching, and enhancing environmental safety. Using industrial waste binders reduced carbon emission and cost, with 40 % GBFS and 6 % CCR content performing optimally. This study could offer important support for sustainable mine development and efficient resource utilization.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"226 ","pages":"Article 109249"},"PeriodicalIF":4.9,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628046","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

Experimental and interaction mechanism with novel depressant lysine for the removal of copper ions activation on sphalerite surface

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-14 DOI: 10.1016/j.mineng.2025.109247

Lingyun Bao, Wengang Liu, Wenbao Liu, Ying Guo, Zuxin Chen

{"title":"Experimental and interaction mechanism with novel depressant lysine for the removal of copper ions activation on sphalerite surface","authors":"Lingyun Bao, Wengang Liu, Wenbao Liu, Ying Guo, Zuxin Chen","doi":"10.1016/j.mineng.2025.109247","DOIUrl":"10.1016/j.mineng.2025.109247","url":null,"abstract":"<div><div>Developing highly efficient and selective depressants is an effective measure to solve the susceptibility of sphalerite flotation to copper ion activation. In this study, the depression performance of the novel depressant lysine (Lys) on Cu<sup>2+</sup>-activated sphalerite was investigated, and the removal mechanism was elucidated using contact angle tests, surface adsorption analysis, inductively coupled plasma experiments (ICP), zeta potential measurements, FT-IR analysis, and XPS analysis. The micro-flotation experiment findings investigated that, at pH 9.0 and 30.0 mg/L of Lys, the flotation recovery difference between chalcopyrite and sphalerite was 53.16 %. Lys showed different adsorption behaviors on the surfaces of chalcopyrite and sphalerite, as further demonstrated by contact angle and surface adsorption analysis. Moreover, it was discovered that Lys could effectively inhibit the adsorption of sodium butyl xanthate (NaBX) on the sphalerite surface, leading to selective depression. Based on the outcomes of solution chemistry calculations, ICP experiments, and zeta potential measurements, it also could be concluded that Lys accelerated the dissolution of Cu<sup>2+</sup> on the sphalerite surface and decreased the negative activation, and Lys ions were found to be the essential constituent of the pulp. FT-IR and XPS analyses confirmed that the RCOO<sup>-</sup> a hydrophilic group of Lys, had a coordination reaction with the activating copper ions, which made it a high chemisorption capacity on the sphalerite surface. In addition, the amino group (–NH<sub>2</sub>) is indirectly involved in the selective depressant mechanism by interacting with Zn<sup>2+</sup> ions on the sphalerite surface. Therefore, Lys is a novel and effective sphalerite depressant, offering theoretical and scientific guidance for the flotation separation of chalcopyrite and sphalerite.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"226 ","pages":"Article 109247"},"PeriodicalIF":4.9,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621197","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

Effects of electrode materials, pretreatment, and configuration on gallium electrowinning

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.mineng.2025.109248

Zuowei Liu , Xueyi Guo , Qinghua Tian , Jue Yin , Zhipeng Xu

引用次数: 0

A comprehensive investigation of microcrystalline graphite flotation using the innovative reagent MOS

IF 4.9 2区工程技术

Minerals Engineering Pub Date : 2025-03-11 DOI: 10.1016/j.mineng.2025.109234

Mengfei Liu , Peng He , Zhongqiang Wen , Jianzhong Liu , Yunzhao Lu , Jianyu Zhu , Daixiong Chen

{"title":"A comprehensive investigation of microcrystalline graphite flotation using the innovative reagent MOS","authors":"Mengfei Liu , Peng He , Zhongqiang Wen , Jianzhong Liu , Yunzhao Lu , Jianyu Zhu , Daixiong Chen","doi":"10.1016/j.mineng.2025.109234","DOIUrl":"10.1016/j.mineng.2025.109234","url":null,"abstract":"<div><div>Microcrystalline graphite more often described greater flotation difficulty than flake graphite. In order to improve the flotation efficiency of microcrystalline graphite, a new reagent called MOS was created by mixed emulsifier alkylphenol ethoxylates (APEO), frother methyl isobutyl carbinol (MIBC), and surfactant stearic acid. The reagent MOS has the ability of both collecting and foaming. The flotation results demonstrated that the flotation recovery of 87.5 % was obtained when 300 g/t of MOS was used, obviously higher than that of conventional kerosene with the same amount of collector. Mechanism study found that mixing emulsification enables collector to have better dispersion in water, which makes the collector in MOS to disperse more easily in the water. E-DLVO theoretical was indicated that the interaction force between the collector and the graphite particles was mainly affected by the hydrophobic force. The force between collector in MOS and graphite is more negative, and its adsorption capacity with graphite particles is stronger than that of traditional collectors. This was confirmed Three-dimensional fluorescence (EEM) test. Quartz Crystal Microbalance (QCM) results also showed that the adsorption capacity of the collector on the graphite surface increased from 70 to 350 ng/cm<sup>2</sup> with stearic acid. Additionally, Atomic Force Microscopy (AFM) results found that the stearic acid in MOS can change the adsorption layer structure of collector and make the adsorption layer more stable. This is beneficial to reduce the adsorption energy of graphite and bubbles, promote the combination of graphite and bubbles, and improve the flotation efficiency of microcrystalline graphite.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"226 ","pages":"Article 109234"},"PeriodicalIF":4.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591612","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