Advanced Powder Technology最新文献

{"title":"An iterative scheme for nonlinear collision-induced breakage equation and convergence analysis","authors":"Sanjiv Kumar Bariwal ,&nbsp;Rajesh Kumar","doi":"10.1016/j.apt.2025.104907","DOIUrl":"10.1016/j.apt.2025.104907","url":null,"abstract":"<div><div>The particulate process (Population balance equation (PBE)) has significant applications in milling processes, astrophysics, and the formation of raindrops. A novel PBE is presented, where particle collisions result in one particle fragmenting into multiple pieces (two or more) due to the impact of elastic collisions. This article aspires to offer a semi-analytical solution of a nonlinear collision-induced breakage equation (CBE) using the Temimi and Ansari method (TAM). Firstly, we describe the contraction mapping theorem for the local existence of the solution to CBE. Then, the convergence analysis of the TAM iterative solution is exhibited under some physical assumptions on the collision kernels. In addition to this, the maximum error bound is calculated for the finite term truncated solution. In order to show the accuracy and efficiency of the proposed method, we have numerically simulated the finite-term approximate density functions and moments with the available analytical results at various time stages considering several numerical examples. In all numerical cases, TAM yields closed-form solutions for the zeroth and first moments. Furthermore, it is noted that the TAM consumes less computing time despite producing results with precision comparable to the Homotopy Perturbation method <span><span>[1]</span></span>. Finally, it has been shown that the proposed method provides the first-order convergence rate.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 7","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917597","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":"Spectroscopic characteristics and characterizations of CaAl12O19-based phosphors for anti-counterfeiting applications and performance predictions","authors":"Shifa Wang ,&nbsp;Yuanyuan Zhang ,&nbsp;Yujia Jin ,&nbsp;Xinmiao Yu ,&nbsp;Xianlun Yu ,&nbsp;Xinxin Zhao ,&nbsp;Huajing Gao ,&nbsp;Xianju Zhou ,&nbsp;Dengfeng Li ,&nbsp;Hua Yang ,&nbsp;Leiming Fang ,&nbsp;Asad Syed","doi":"10.1016/j.apt.2025.104918","DOIUrl":"10.1016/j.apt.2025.104918","url":null,"abstract":"<div><div>The CaAl₁₂O₁₉/ZnO (CAO/ZO), CaAl₁₂O₁₉/MoS₂ (CAO/MS), and CaAl₁₂O₁₉/LiPF₆ (CAO/LPF) phosphors with different mass percentages were synthesized. The CAO/ZO and CAO/MS phosphors contained no other impurities except the target products, but CAO/LPF phosphor also contained LiF and Li_xPO_yF_z impurities due to the high temperature thermal decomposition of LPF. The fine particles of ZO, MS or LPF were uniformly attached to the surface of CAO, forming a special interface contact. The coupling CAO with ZO and MS significantly reduces the optical band gap (Eg) value of CAO, while LPF coupling CAO does not affect the Eg value of host lattice. The CAO/ZO, CAO/MS, and CAO/LPF phosphors were shown to be sky blue, blue, and dark blue, respectively, during the photoluminescence characterization, which resulted in the emission peaks that were predominantly concentrated at 487, 467, and 459 nm, respectively. An intelligent algorithm model was used to predict the photoluminescence properties of CAO-based phosphors, and it demonstrated exceptional predictive ability. The CAO/ZO, CAO/MS and CAO/LPF phosphors exhibit different photoluminescence properties due to the radiative recombination of localized excitons, type I band arrangement and impurity promoting electron and hole recombination, respectively. Photoluminescence applications show that the CAO-based phosphors demonstrate multimodal fluorescence anti-counterfeiting under different excitation wavelengths.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 7","pages":"Article 104918"},"PeriodicalIF":4.2,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143913142","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":"A Voronoi tessellation-based CFD-DEM porosity model for fluidized bed modelling","authors":"Hanqiao Che ,&nbsp;Yuanhe Yue ,&nbsp;Deyun Liu ,&nbsp;Shuai Wang","doi":"10.1016/j.apt.2025.104913","DOIUrl":"10.1016/j.apt.2025.104913","url":null,"abstract":"<div><div>The porosity model is a critical component of CFD-DEM calculations, particularly in scenarios where the CFD mesh size cannot be adjusted flexibly. Voronoi tessellation has been demonstrated as an efficient method for estimating the porosity of individual particles. This study introduces a flexible implementation of the Voronoi porosity model, extending its application to broader chemical engineering scenarios and enabling large-scale computations for irregular devices. The model leverages CFD mesh cell nodes and the functions in Voro++ package, addressing previous limitations with point cloud generation. Evaluations across various particle size distributions and fluidised beds show that the model generates smooth porosity fields, remains independent of mesh grid density, and significantly improves drag force calculation accuracy in polydisperse particle systems. Although computational costs may rise due to frequent Voronoi tessellation updates, reducing the update frequency can help reduce these costs.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 7","pages":"Article 104913"},"PeriodicalIF":4.2,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907033","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":"Gas and liquid state ammonia boosted in the hydrolysis of secondary aluminum dross","authors":"Yunzi Xin ,&nbsp;Yuki Oishi ,&nbsp;Kunihiko Kato ,&nbsp;Yuping Xu ,&nbsp;Takashi Shirai","doi":"10.1016/j.apt.2025.104910","DOIUrl":"10.1016/j.apt.2025.104910","url":null,"abstract":"<div><div>This study elucidates the behavior of gas and liquid state ammonia generation in both short-term and long-term hydrolysis of secondary aluminum dross (SAD) powders, with detailed characterizations of the chemical structure and surface chemical state change of SAD particles during the hydrolysis reaction. Altered aluminum hydroxides, boehmite, bayerite, and gibbsite, were formed selectively on the surface of SAD in prolonged hydrolysis, which play principal roles in the progress of the hydrolysis reaction and generation of gas and liquid state ammonia. The influence of the reaction temperature on the hydrolysis of SAD is also clarified in advance, which demonstrates a distinguished reaction dynamics and mechanism. It was found that the gasification of dissolved liquid state ammonia is a predominant process, instead of a promoted hydrolysis of SAD for enhanced gas state ammonia production. Moreover, a novel and facile approach is introduced for boosting both gas and liquid state ammonia via beads mill-assisted hydrolysis of SAD powders. During beads mill process, the coverage of aluminum hydroxides on SAD was hindered via the mechanical breaking of particle surface. Continuous hydrolysis was then achieved through the further promoted reaction between water and the exposed new surface of SAD, which significantly enhances ammonia generation.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 7","pages":"Article 104910"},"PeriodicalIF":4.2,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907034","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":"Erratum to “Role of ultraviolet modification in enrichment and upgrading of graphite ores via triboelectric separation” [Adv. Powder Technol. 36(6) (2025) 104870]","authors":"Jingfeng He,&nbsp;Zilin Zhang,&nbsp;Lixiang Fu,&nbsp;Helang Xu,&nbsp;Lingtao Zhu,&nbsp;Bin Yang","doi":"10.1016/j.apt.2025.104911","DOIUrl":"10.1016/j.apt.2025.104911","url":null,"abstract":"","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 6","pages":"Article 104911"},"PeriodicalIF":4.2,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894925","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":"Synthesis of spherical particles of ceria-zirconia solid solution by microwave-emulsion method","authors":"Miki Inada,&nbsp;Junichi Hojo","doi":"10.1016/j.apt.2025.104904","DOIUrl":"10.1016/j.apt.2025.104904","url":null,"abstract":"<div><div>Microwave-emulsion method has been explored for synthesis of spherical oxide particles with combination of rapid and selective heating by microwave and spherical shape control by emulsion method. The CeO₂-ZrO₂ solid solution particles were prepared by heating of W/O emulsions under microwave irradiation followed by calcination. Oil phase was n-hexane including tetraglycerin condensed ricinolate and polysorbate 80 as emulsifier, and water phase included (NH₄)₂Ce(NO₃)₆ and ZrOCl₂ as metal source and (NH₄)₂C₄H₄O₆ as hydrolysis agent. As-produced powder exhibited cubic phase at Ce/Zr ≥ 5/5 and amorphous phase at Ce/Zr ≤ 3/7. After calcination, the lattice constant of cubic CeO₂ decreased and tetragonal and monoclinic phases of ZrO₂ appeared at large Zr content. Pure CeO₂ was agglomerates of fine particles and spherical particles with a size of 0.5–1 μm were obtained by addition of ZrO₂, indicating that the spherical particles were the mixture of crystalline CeO₂ and amorphous ZrO₂. The oxygen storage capacity increased with rising calcination temperature due to the formation of solid solution but decreased at high temperature due to decrease in surface area.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 6","pages":"Article 104904"},"PeriodicalIF":4.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887980","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":"Effect of yield stress on two-phase flow characteristics of gangue cemented backfill slurry in straight horizontal pipeline","authors":"Zehua Wang ,&nbsp;Guorui Feng ,&nbsp;Tingye Qi ,&nbsp;Haochen Wang ,&nbsp;Mengnan Zhan","doi":"10.1016/j.apt.2025.104899","DOIUrl":"10.1016/j.apt.2025.104899","url":null,"abstract":"<div><div>The pipeline transportation is widely employed in mine backfill for delivering high concentration slurry. Based on the Euler-Euler two-fluid model, gangue cemented backfill slurry was abstracted as a dual-component structure consisting of fine gangue slurry (carrier fluid) and coarse gangue aggregates (transported particles). The influence of yield stress on the distribution of coarse aggregates, flow velocity, granular pressure, and pressure drop in GCB slurry is simulated. The results indicated that: 1) The coarse aggregates distribution was divided into coarse aggregate volume increasing zone (CG-VIZ), stable flow zone (SFZ), and coarse aggregate volume increasing zone (CG-VIZ). Increasing the yield stress can significantly reduce the coarse aggregate content and the extent of CG-VIZ resulting from segregation. 2) As the yield stress increases, the flow velocity transitions from an asymmetric ‘arch’ distribution to an asymmetric ‘plunger’ distribution in the vertical direction, while the asymmetry gradually diminishes. 3) The granular pressure distribution demonstrated a ‘U’ shape, with the maximum granular pressure occurring at the bottom of the pipeline. 4) The pressure loss of pipelines increases linearly with the increase of yield stress.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 6","pages":"Article 104899"},"PeriodicalIF":4.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887976","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":"Direct surface modification of a silica-based adsorbent for CO2 capture from coir fibers dissolved in a sulfur-free alkali-urea system","authors":"Hendrix Abdul Ajiz ,&nbsp;W. Widiyastuti ,&nbsp;Heru Setyawan ,&nbsp;Tantular Nurtono ,&nbsp;Ni Made Intan Putri Suari ,&nbsp;Lailatul Qomariyah ,&nbsp;Yogi Wibisono Budhi ,&nbsp;S. Suherman","doi":"10.1016/j.apt.2025.104912","DOIUrl":"10.1016/j.apt.2025.104912","url":null,"abstract":"<div><div>The direct surface modification of silica using cellulose-based organosilane dissolved in a sulfur-free NaOH/urea solvent system was further investigated as a selective CO₂ adsorbent. Cellulose was dissolved at a low temperature of − 5°C, followed by mixing a silicate precursor as a silica source. Cellulose–carbamat complex grafting was carried out through a silica monomer condensation reaction using the sol–gel method. The anionic surfactant sodium lauryl sulfate (SLS) was added at various concentrations as a template to improve the particles’ physical characteristics. The process of particle formation and template removal was carried out in one stage in a spray drying system that followed the one droplet to one particle rule. Increasing the SLS concentration indicates a change in particle morphology from spherical to hollow, followed by an increase in particle size with a more uniform size distribution. The surface area and porosity of silica particles increased by up to fivefold when the SLS concentration was increased to 3 CMC. The physical characteristics that significantly increase show a linear influence on their ability to adsorb CO₂. At a pressure of 6 bar, the CO₂ gas adsorption capacity of the silica adsorbent with the SLS 3 CMC template was almost eight times greater than that with the SLS 3 CMC template, reaching 12.85 mmol/g silica.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 6","pages":"Article 104912"},"PeriodicalIF":4.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887979","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":"Innovative separation strategies for low-rank coal flotation: Filling self-generated pores with gutter oil collectors to enhance hydrophobic sites","authors":"Chun-chen Nie ,&nbsp;Xi-guang Li ,&nbsp;Wen-tao Zhou ,&nbsp;Haipei Dong ,&nbsp;Xiang-nan Zhu","doi":"10.1016/j.apt.2025.104908","DOIUrl":"10.1016/j.apt.2025.104908","url":null,"abstract":"<div><div>Low-rank coal (LRC) has strong hydrophobicity, which leads to low efficiency in conventional flotation that coal particles need to be mixed with water first, making it difficult for collector molecules to replace water molecules. An innovative technology for microwave heating to remove moisture and dry adsorption of gutter oil collectors was proposed to make the collectors efficient in adsorbing on coal surface. Firstly, the particle morphology and phase composition of LRC were analysed through SEM and XRD to clarify the impact of particle morphology and mineral composition on floatability. Furthermore, the functional group composition and hydrophobic group content of the modified LRC were analysed by FTIR and XPS, respectively. Contact angle analysis and wrap angle analysis were used to investigate the stability of particle-bubble adhesion. Finally, flotation experiments and flotation kinetics analysis were conducted to verify the flotation characteristics of modified LRC. The SEM analysis results indicate that the high porosity of LRC can intercept more water and form a thick water film. The XPS analysis results indicate that the content of hydrophobic groups in LRC is only 61.69 %, which is the core reason why it is difficult for LRC to float. The content of hydrophobic groups C–C/C–H in modified LRC increases to 86.05 % after collector adsorption. In addition, the contact angle increases from 13.71° to 74.63°, further improving the adhesion stability between LRC particles and bubbles, while the wrap angle increases from 18° to 131° for 0.5–0.25 mm. Compared to raw coal, the combustible recovery of modified LRC increases from 23.13 % to 66.89 % with a collector dosage of 9000 g/t. The flotation kinetics results demonstrate that the flotation characteristics of various particle sizes of modified LRC have been significantly improved. Research provides an innovative and sustainable way to improve the flotation efficiency of LRC.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 6","pages":"Article 104908"},"PeriodicalIF":4.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887978","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":"Experimental and numerical study on the suppression of methane/coal dust hybrid explosion by DMMP water mist","authors":"Mengjiao Xu ,&nbsp;Shuangming Wei ,&nbsp;Weidong Lu ,&nbsp;Minggao Yu ,&nbsp;Zhifeng Chen","doi":"10.1016/j.apt.2025.104894","DOIUrl":"10.1016/j.apt.2025.104894","url":null,"abstract":"<div><div>To investigate the effect of DMMP (dimethyl methyl phosphonate) water mist on the suppression of methane/coal dust hybrid explosion, a series of experiments on methane/coal dust hybrid explosion suppressed by varying DMMP water mist (0 % DMMP-2.0 % DMMP) were carried out in a 20 L spherical device. The experimental results show that the flame propagation speed, maximum explosion pressure rise rate (<em>dP/dt</em>)_max and explosion index <em>K</em>_G first increase and then decrease with the increase of DMMP concentration. The optimal explosion suppression concentration of DMMP water mist for methane/coal dust hybrid explosion is 1.2 %. Besides, a new kinetic model of methane/coal dust hybrid explosion suppressed by DMMP water mist was established to analyze the chemical kinetics of the elementary reaction under different initial temperature (<em>T</em>₀ = 1250–1600 K) and initial pressures (<em>P</em>₀ = 0.08–0.13 MPa). The numerical results revealed that the elementary reaction R1: H + O₂ = O + OH is the dominant elementary reaction to enhance adiabatic flame temperature. Phosphorus containing small molecules HOPO and HOPO₂ are important intermediate products in the DMMP reaction process, playing a crucial role in the suppression of methane/coal dust hybrid explosion by DMMP water mist.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 6","pages":"Article 104894"},"PeriodicalIF":4.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887977","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}