Advanced Powder Technology最新文献

{"title":"Effect of impeller structure on the particle flow and adhesion behavior in a vertical intensive granulator","authors":"Zhijian Zuo ,&nbsp;Bingwen Feng ,&nbsp;Xingfu Lu ,&nbsp;Yuan Yang ,&nbsp;Shuguang Gong ,&nbsp;Jianping Zhang","doi":"10.1016/j.apt.2025.105017","DOIUrl":"10.1016/j.apt.2025.105017","url":null,"abstract":"<div><div>Performance optimization of a granulator is an important issue in many industrial applications dealing with granular matter. This work investigates how the particle flow and adhesion behavior in a vertical intensive granulator are affected by four structural parameters: blade type, impeller offset, blade number, and thread pitch. The DEM model was validated by comparing the impeller torque and adhesion behavior of particles. The particle velocity field, velocity fluctuation, coordinate number (CN), the relative standard deviation of contact number (RSDC) were used to quantify the particle dynamics and adhesion behavior. It was found that the particle velocity agitated by thread blade is lower than arc and straight blades; the particle velocity and velocity fluctuation increase with the decrease of impeller offset. Increasing the blade number and thread pitch leads to an increase in the particle velocity. Results obtained indicate that the thread blade with an impeller offset of 55 mm and a thread pitch of 80 mm has the best adhesion behavior, and the adhesion behavior decreases with the increase of blade number.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144686965","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":"Research on the characteristics of coal dust explosion in mine cartridge filter based on numerical simulation","authors":"Shihang Li ,&nbsp;Xiaodong She ,&nbsp;Shunyu Nan ,&nbsp;Hao Jin ,&nbsp;Fan Geng ,&nbsp;Jianxu Ding ,&nbsp;Bo Ren ,&nbsp;Gang Zhou ,&nbsp;Minghui Ouyang ,&nbsp;Yingchao Wei ,&nbsp;Shuda Hu","doi":"10.1016/j.apt.2025.105015","DOIUrl":"10.1016/j.apt.2025.105015","url":null,"abstract":"<div><div>In the underground coal mine tunneling faces, cartridge filters are often used for dust removal. However, during the operation of the cartridge filter, there is a potential hazard of dust explosions as the internal dust concentration reaches a certain level. Based on the CFD numerical simulation method, this research established a dust explosion model in a mine cartridge filter to analyze the features of internal dust explosions under operational conditions. The influence of initial transport velocity and dust concentration on the coal dust explosions was revealed. The numerical simulation demonstrates that an increase in the initial transport velocity enhances turbulence intensity, leading to elevated peak explosion pressure and peak of pressure rise rate inside the cartridge filter, thereby intensifying the level of dust explosions hazard. The peak explosion pressure is higher in the 0–1 m section of the pipeline, and the 0.5 m of the air inlet pipe demonstrates the most pronounced negative pressure effect. In the settling chamber, the speed at which the flame propagates initially increases as the propagation distance grows. However, it gradually slows down due to the accumulating pressure effect. The flame tends to propagate from the air inlet pipe, and the propagation speed increases as the flame travels further along the pipe. This research provides theoretical guidance for designing explosion-proof systems and venting mechanisms for cartridge filter interiors and pipes.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144686964","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":"Fly Ash-MgO infused CaO-based sorbent for high-temperature CO2 capture under realistic carbonation and harsh calcination conditions","authors":"Shishir Tiwary,&nbsp;Soubhik Kumar Bhaumik","doi":"10.1016/j.apt.2025.105014","DOIUrl":"10.1016/j.apt.2025.105014","url":null,"abstract":"<div><div>Calcium Looping (CaL) technologies suffer from sintering-induced agglomeration, which reduces their performance under repeated carbonation and calcination cycles. The drawback has attracted extensive research towards modifying the sorbent by adding different inert materials through various synthesis techniques. Among various inert materials, fly ash (FA) emerges as a low-cost and abundantly available candidate containing refractory material that can resist sintering. The current work investigates the infusion of an optimized proportion of FA and MgO precursor (MgO_P) into a calcium-based organic precursor (CaAc) through the sol–gel combustion synthesis to enhance carbonation conversion (X_CBN) and stabilize cyclic performance. The study includes characterizing as-synthesized and spent sorbent while evaluating cyclic capture performance thermo-gravimetrically under realistic carbonation (CO₂ = 20v/v%, t_CBN = 20 mins, T_CBN = 650 °C) and harsh calcination (CO₂ = 80v/v%, t_CALC = 10 mins, T_CALC = 900 °C) conditions with shorter transition time. The sorbent performance was optimized based on the FA/inert ratio (FA_<em>y</em>) and CaAc/sorbent ratio (CaAc<em>_x_CaAc</em>). The result showed comparatively better performance of FA_<em>0.4</em> with deterioration of only 10.38 % over 5 cycles. Despite a lower X_CBN (55.77 %) of CaAc_<em>0.8</em> in the 1^st cycle compared to CaAc_<em>0.9</em> (79.74 %), the former exhibited more excellent cyclic stability, losing only 6.04 % in X_CBN after 5 cycles compared to the latter (38.75 %). Temperature sensitivity studies on CaAc_<em>0.8</em> established 650 °C as the most suitable carbonation temperature, incurring lower deterioration than 700 °C and 750 °C. Overall, CaAc_<em>0.8</em> (8 wt% FA, 12 wt% MgO_P) yielded the most stable cyclic performance (10 cycles) under realistic carbonation and harsh calcination conditions, proving its efficacy for CO₂ capture.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 9","pages":"Article 105014"},"PeriodicalIF":4.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144686875","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":"Design of a wet iron ore feeder and analysis of cyclone global collection efficiency","authors":"Luana Boger Genaro ,&nbsp;Thiago C. Souza Pinto ,&nbsp;Alfredo M. Sarkis ,&nbsp;Thiago Faggion de Pádua ,&nbsp;José Teixeira Freire ,&nbsp;Rodrigo Béttega","doi":"10.1016/j.apt.2025.105009","DOIUrl":"10.1016/j.apt.2025.105009","url":null,"abstract":"<div><div>A rod-type solids feeder was developed for handling sticky solids such as wet iron ore. The physical properties of the ore were determined, including the loose and tapped bulk densities, as well as the Hausner ratio. Feeder development followed a prototyping methodology, with performance analyzed using a dry solids mass balance. The approach quantified the ore masses accumulated in different regions of the equipment: air duct, feeder compartments, cyclone walls, and underflow. The mass escaping in the overflow was estimated and the global solids collection efficiency was determined. The tests used ore with moisture levels of 0.02, 0.06, and 0.10 kg_water·kg_{wet solid}⁻¹, air temperatures of 80 and 90 °C, and air velocities from 10 to 30 m·s⁻¹. A minimum air velocity of 25 m·s⁻¹ prevented solids accumulation in the air duct, while adhesion to the cyclone wall was minimal (≤0.21 ± 0.06 %). The results demonstrated the effectiveness of the prototyping methodology, with determination of the real global collection efficiency of the cyclone highlighting the rod-type feeder as a promising solution for use with sticky solids.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 9","pages":"Article 105009"},"PeriodicalIF":4.2,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679244","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":"Evaluation of microwave absorption properties of CNT-containing alumina composites and its application as a heating medium for microwave-heated particle synthesis","authors":"Kaito Hirao ,&nbsp;Tomoomi Segawa ,&nbsp;Tomonori Fukasawa ,&nbsp;Toru Ishigami ,&nbsp;Fandi Angga Prasetya ,&nbsp;Katsunori Ishii ,&nbsp;Koichi Kawaguchi ,&nbsp;Hsiu-Po Kuo ,&nbsp;An-Ni Huang ,&nbsp;Kunihiro Fukui","doi":"10.1016/j.apt.2025.105008","DOIUrl":"10.1016/j.apt.2025.105008","url":null,"abstract":"<div><div>We investigated the dielectric and exothermic properties and thermal durability of carbon nanotube (CNT)-containing alumina composites. Experiments were conducted to synthesize nickel oxide (NiO) powder from aqueous Ni(NO₃)₂・6H₂O via microwave denitration in the presence of a heating jacket as a microwave susceptor. The heating jackets were fabricated using the CNT-containing alumina composites. As the CNT content in the composite increased, the apparent dielectric loss also increased, reaching a maximum value. Thereafter, the apparent dielectric loss decreased with increasing CNT content in the composite, indicating that the exothermic properties of the composites depend on the CNT content. The aerosol coating had a negligible effect on the dielectric and exothermic properties of the composites. However, composites with an aerosol coating demonstrated superior thermal durability. The heating jacket not containing CNT did not effectively serve as a susceptor. However, the heating jacket containing CNTs effectively served as a susceptor and facilitated the microwave denitration reaction to proceed, yielding crystalline NiO particles. The heating jacket enabled the temperature of aqueous Ni(NO₃) ₂・6H₂O in the flask to continue increasing up to 500 ℃ via heat conduction. In conclusion, CNT-containing alumina composites are potential materials for use as susceptors in hybrid heating.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 9","pages":"Article 105008"},"PeriodicalIF":4.2,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670511","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":"Depression mechanism of a novel environment-friendly depressant konjac gum in flotation separation of chalcopyrite and sphalerite","authors":"Tichen Wang ,&nbsp;Jiushuai Deng ,&nbsp;Yijun Cao ,&nbsp;Qin qizheng ,&nbsp;Chen Zhang ,&nbsp;Yue Gao","doi":"10.1016/j.apt.2025.104989","DOIUrl":"10.1016/j.apt.2025.104989","url":null,"abstract":"<div><div>Conventional inorganic depressants are widely used in the flotation separation of chalcopyrite and sphalerite. However, their widespread use entails some inevitable disadvantages, such as environmental hazards, waste generation, and additional costs. In this work, Konjac gum (KG) was investigated as a non-toxic and eco-friendly sphalerite depressant in the flotation separation of chalcopyrite and sphalerite. Micro-flotation and artificial mixed mineral experiments suggested that the addition of KG dramatically depressed the floatability of sphalerite while having a negligible depressive effect on chalcopyrite at pH = 7. Wettability measurements, Zeta potential measurements, adsorption measurements and interaction energy calculations showed that KG have a stronger affinity to sphalerite rather than chalcopyrite, preventing the adsorption of collector on sphalerite surface. FTIR and XPS measurements demonstrated that KG could interact with sphalerite and change the chemical environment of oxygen atoms on sphalerite surface. The Bronsted acid-base interaction, hydrogen bonding, and the attraction between the hydrophobic sections of KG and sphalerite surface were considered as the potential mechanisms in the adsorption of KG on sphalerite.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 9","pages":"Article 104989"},"PeriodicalIF":4.2,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672620","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":"Non-toxic and biodegradable depressant Gum Arabic for flotation separation of calcite and magnesite: Experiments and MD simulations","authors":"Dingquan Xing ,&nbsp;Tingting Hu ,&nbsp;Ticheng Wang ,&nbsp;Jiushaui Deng ,&nbsp;Yanyan Diao ,&nbsp;Tianyu Cheng ,&nbsp;Jiahong Han ,&nbsp;Youyuan Yang","doi":"10.1016/j.apt.2025.104992","DOIUrl":"10.1016/j.apt.2025.104992","url":null,"abstract":"<div><div>In this study, Gum arabic (GA), a green, environmentally friendly, and biodegradable organic macromolecule reagent, is employed as a novel depressant for the reverse flotation separation of magnesite and calcite. The micro-flotation tests demonstrate that GA exhibits a selective depression impact on magnesite. From artificial mixed minerals, a concentrate with a MgO grade of 31.39 % and a MgO recovery of 80.31 % can be obtained using 70 mg/L of GA. The mechanism studies reveal that GA adsorbs on the magnesite surface mainly via chemical chelation between Mg sites on the magnesite surface and hydroxyl and carboxyl groups on GA, while it mainly adsorbs through hydrogen bonding on the calcite surface. After adding NaOL, it can further adsorb on the calcite surface, while its adsorption on magnesite is more difficult. Moreover, the spatial distribution of water molecules and the radial distribution function (RDF) provides microscopic proof that GA can expand the differences in hydrophobicity between magnesite and calcite surfaces. Eventually, the difference in the floatability of the two minerals increases significantly. Therefore, GA can be adopted as a novel and highly selective depressant for the reverse flotation separation of magnesite.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 9","pages":"Article 104992"},"PeriodicalIF":4.2,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679245","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":"The assessment of the influence of interaction forces on heat transfer and pressure drop using Eulerian-Lagrangian model with various particle collision approaches","authors":"Muhammad M. Generous ,&nbsp;Eiyad Abu-Nada ,&nbsp;Anas Alazzam","doi":"10.1016/j.apt.2025.105006","DOIUrl":"10.1016/j.apt.2025.105006","url":null,"abstract":"<div><div>This study investigates the impact of critical forces—including linear and rotational drag, gravity, Saffman’s lift, thermophoretic, Brownian, virtual mass, Magnus, pressure, and particle collisions—on pressure drop and the average wall Nusselt number in particle-laden flows using a validated Eulerian-Lagrangian model. The analysis covers a particle Reynolds number range of <span><math><mrow><mn>0.4</mn><mo>&lt;</mo><mi>R</mi><msub><mi>e</mi><mi>p</mi></msub><mo>&lt;</mo><mn>1.75</mn></mrow></math></span> and evaluates four particle interaction models: linear spring, spring-dashpot, Hertzian, and Hertzian-dashpot. Model validation is conducted against benchmark cases, including particle sedimentation, the Segre-Silberberg effect, drafting-kissing-tumbling, Brownian motion (assessed via mean square displacement and diffusion profiles), and the transient thermal response of spherical particles. Heavy (2702 kg/m³) and light particles (500 kg/m³) are studied under gravity directed downward (horizontal channel) and against the flow (vertical channel). The findings reveal that linear and rotational drag are the primary contributors to pressure drop, with their omission resulting in increased Nusselt numbers across all scenarios. Excluding other forces, particularly Saffman’s lift and Magnus, causes moderate reductions in the Nusselt number. The study advocates for the use of spring-dashpot and Hertzian-dashpot models at higher mass flow rates to capture energy dissipation accurately, preventing Nusselt number overestimations of 0.54 %–1.1 % for particle mass flow rates between 0.01 and 0.1 g/s.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 9","pages":"Article 105006"},"PeriodicalIF":4.2,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634587","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":"Inside Front Cover (Aims & Scope, Editors)","authors":"","doi":"10.1016/S0921-8831(25)00217-1","DOIUrl":"10.1016/S0921-8831(25)00217-1","url":null,"abstract":"","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104996"},"PeriodicalIF":4.2,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633797","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":"Full title (Editorial Board Members)","authors":"","doi":"10.1016/S0921-8831(25)00218-3","DOIUrl":"10.1016/S0921-8831(25)00218-3","url":null,"abstract":"","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104997"},"PeriodicalIF":4.2,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633798","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}