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Effects of ethanol on aragonite formation and growth used steamed ammonia liquid waste as calcium sources 以蒸氨废液为钙源,乙醇对文石形成和生长的影响
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-10-01 DOI: 10.1016/j.powtec.2025.121718
Xuewen Song , Mingfei Li , Yan Zhang , Dan Li , Guangle Wang , Yihan Yin , Xingfei Zhang , Xianzhong Bu
{"title":"Effects of ethanol on aragonite formation and growth used steamed ammonia liquid waste as calcium sources","authors":"Xuewen Song ,&nbsp;Mingfei Li ,&nbsp;Yan Zhang ,&nbsp;Dan Li ,&nbsp;Guangle Wang ,&nbsp;Yihan Yin ,&nbsp;Xingfei Zhang ,&nbsp;Xianzhong Bu","doi":"10.1016/j.powtec.2025.121718","DOIUrl":"10.1016/j.powtec.2025.121718","url":null,"abstract":"<div><div>Aragonite, one of the most distinctive anhydrous calcium carbonate (CaCO<sub>3</sub>) crystals, forms via a multistep process. The presence of ethanol can influence the precipitation pathways and morphology of anhydrous crystalline CaCO<sub>3</sub> polymorphs. In this study, we investigated the effects of temperature and agitation on the physicochemical properties and formation process of aragonite in an ethanol-based system. The resulting aragonite particles were characterized using X-ray diffraction and scanning electron microscopy. The role of ethanol in aragonite growth was further examined through density functional theory and molecular dynamics simulations. The results showed that the presence of ethanol considerably increased the aragonite content, leading to the formation of single-phase aragonite. Temperature and agitation altered the distribution of ethanol within the reaction system and the likelihood of collisions with calcium ions, thereby influencing the nucleation and growth of aragonite. Mechanistic analysis indicated that ethanol regulated the nucleation and growth of aragonite crystals by modulating their complexation with calcium ions and interacting with crystal surfaces in various ways. These effects ultimately determined the content and performance of the resulting aragonite crystals. This study introduced a novel approach for producing high-value-added aragonite-type CaCO<sub>3</sub> products from industrial waste streams.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"469 ","pages":"Article 121718"},"PeriodicalIF":4.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227771","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
Fragmented rock block geometry affecting mechanical responses and fluid flow characteristics during compaction of caving zones 崩落带压实过程中破碎块体几何形状对力学响应和流体流动特性的影响
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-10-01 DOI: 10.1016/j.powtec.2025.121707
Haoyue Zhang , Xin Zhang , Gang Wang , Xiaoguang Wang , Joung Oh , Guangyao Si
{"title":"Fragmented rock block geometry affecting mechanical responses and fluid flow characteristics during compaction of caving zones","authors":"Haoyue Zhang ,&nbsp;Xin Zhang ,&nbsp;Gang Wang ,&nbsp;Xiaoguang Wang ,&nbsp;Joung Oh ,&nbsp;Guangyao Si","doi":"10.1016/j.powtec.2025.121707","DOIUrl":"10.1016/j.powtec.2025.121707","url":null,"abstract":"<div><div>Underground mining plays a pivotal role in resources extraction and clean energy transition, but the safe management of caving zones remains a primary challenge. This study investigates the influence of broken rock geometries on mechanical responses of fragmented rocks and fluid flow characteristics within the mining goaf. By simulating three distinct fragment geometries, the stress-strain measurements, rock rebreakage, and size distribution variation have been characterised. The results indicate that the higher level of irregularity in the broken rock geometry, makes the material more sensitive to compaction, leading to higher degrees of breakage and more rapid reductions in structural porosity. Additionally, the pore structures extracted from the mechanical models are imported into a fluid dynamics module to measure permeability of caving zones. Findings reveal that the geometrical configuration of the pore network governs fluid transport pathways. Broken rocks with complicated geometries increase the tortuosity of pore paths, resulting in greater flow resistance and lower permeability. This study emphasises the significance of rock block morphology in controlling the compaction and fluid transportation in the goaf, providing insights into gas migration behaviour and enhancing water storage potential in goaf environments.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"469 ","pages":"Article 121707"},"PeriodicalIF":4.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264615","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 investigation of the influence of non-spherical bead ratios on size-induced segregation in ternary granular systems 三元颗粒体系中非球形粒比对粒径诱导偏析影响的实验研究
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-10-01 DOI: 10.1016/j.powtec.2025.121721
Chun-Chung Liao, Weig-Yi You
{"title":"Experimental investigation of the influence of non-spherical bead ratios on size-induced segregation in ternary granular systems","authors":"Chun-Chung Liao,&nbsp;Weig-Yi You","doi":"10.1016/j.powtec.2025.121721","DOIUrl":"10.1016/j.powtec.2025.121721","url":null,"abstract":"<div><div>Granular segregation plays a vital role in both industrial applications and geophysical processes. This study examines the influence of non-spherical particle ratios on size-induced granular segregation in a rotating drum. High-definition DV and high-speed cameras were used to capture particle motion, while an image-processing method and particle-tracking technology were employed to measure key parameters, including average velocity, granular temperature, dynamic angle of repose, and segregation intensity. The results indicate that incorporating non-spherical particles mitigates size-induced segregation. Specifically, the final steady-state segregation intensity decreases as the proportion of non-spherical particles increases in a ternary granular mixture. Additionally, a higher ratio of non-spherical particles leads to an increase in the dynamic angle of repose. Furthermore, both the average velocity and granular temperature decrease with increasing non-spherical particle ratios due to the influence of grain shape on segregation behavior.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"469 ","pages":"Article 121721"},"PeriodicalIF":4.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227773","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
Inhibitory effects of phosphorus-containing layered double hydroxides on flame characteristics and overpressure in aluminum dust explosion 含磷层状双氢氧化物对铝粉尘爆炸火焰特性和超压的抑制作用
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-10-01 DOI: 10.1016/j.powtec.2025.121727
Zhiyue Han , Xinrui Zhang , Cheng Wang , Xi Wu , Jianxu Ding
{"title":"Inhibitory effects of phosphorus-containing layered double hydroxides on flame characteristics and overpressure in aluminum dust explosion","authors":"Zhiyue Han ,&nbsp;Xinrui Zhang ,&nbsp;Cheng Wang ,&nbsp;Xi Wu ,&nbsp;Jianxu Ding","doi":"10.1016/j.powtec.2025.121727","DOIUrl":"10.1016/j.powtec.2025.121727","url":null,"abstract":"<div><div>To mitigate combustion-explosion hazards associated with aluminum powder in industrial settings, this research investigates the effectiveness of layered double hydroxides (LDHs) in preventing aluminum dust explosions through flame propagation studies and explosion overpressure tests. The article innovatively synthesizes phosphorus-containing layered double hydroxides powder (MgAl-LDHs-P) using the co-precipitation method. It provides a detailed comparison and discussion of the influence of MgAl-LDHs-P powder on the combustion-explosion behavior of aluminum powder under both inerting and explosion inhibition conditions. The experimental results demonstrate that the addition of an appropriate quantity of inhibitors can significantly reduce explosion intensity under inerting conditions. In contrast, the timing of inhibitor release is crucial under inhibition conditions. Furthermore, based on the analysis of explosion products and theoretical calculations, the inhibition mechanism of the material was investigated. This mechanism is primarily attributed to the heat absorption, adhesion, and its capacity to absorb free oxygen radicals. Given that LDHs have a well-established industrial-scale production amplification process, the research presented in this paper can offer new insights into safety protection measures for aluminum powder combustion-explosion.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"469 ","pages":"Article 121727"},"PeriodicalIF":4.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322408","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
Influence of multi-type nanoparticles on the foam thermo-rheological properties of mixtures of short-chain fluorocarbons and hydrocarbon surfactants 多类型纳米颗粒对短链碳氟化合物与碳氢表面活性剂混合物泡沫热流变性能的影响
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-09-30 DOI: 10.1016/j.powtec.2025.121693
Yi Guo , Jiaqing Zhang , Changhai Li , Shanwen Zhang , Youjie Sheng , Yang Li
{"title":"Influence of multi-type nanoparticles on the foam thermo-rheological properties of mixtures of short-chain fluorocarbons and hydrocarbon surfactants","authors":"Yi Guo ,&nbsp;Jiaqing Zhang ,&nbsp;Changhai Li ,&nbsp;Shanwen Zhang ,&nbsp;Youjie Sheng ,&nbsp;Yang Li","doi":"10.1016/j.powtec.2025.121693","DOIUrl":"10.1016/j.powtec.2025.121693","url":null,"abstract":"<div><div>While nanoparticles (NPs) are known to enhance the rheological properties of firefighting foams, the impact of different NPs types on the foam thermo-rheological properties has remained unclear. Short-chain fluorocarbon and hydrocarbon surfactants, and three types of NPs (SiO<sub>2</sub>, Al(OH)<sub>3</sub>, and β-Al<sub>2</sub>O<sub>3</sub>) were used to prepare the foams. The interactions between NPs and surfactants, as well as their effects on foaming ability, foam stability, and foam thermo-rheological properties, were analyzed. Results indicated that NPs can form aggregates with surfactant molecules, thereby affecting surface tension, pH value, conductivity, zeta potential, viscoelasticity, and viscosity of foam dispersion. NPs can reduce the initial foam height of the foam dispersion from 340 mL to 250–260 mL, and significantly decrease the foaming ability. All three NPs could significantly delay foam drainage and enhance foam stability. At 45 °C, the NPs can decrease foam viscosity and viscoelasticity. The thixotropy of all foams at 45 °C showed different trends, and the foam with Al(OH)<sub>3</sub> NPs showed the best thixotropic structure recovery. Hysteresis behavior at 45 °C of the foam with Al(OH)<sub>3</sub> NPs decreased, but increased in the foam containing SiO<sub>2</sub> and β-Al<sub>2</sub>O<sub>3</sub>. In general, all three NPs could enhance the foam stability and foam thermo-rheological properties, with Al(OH)<sub>3</sub> demonstrating the strongest capability. This study can provide theoretical support for the development of firefighting foam stabilized by NPs.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121693"},"PeriodicalIF":4.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217284","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
Study on the dust removal efficiency of respirable dust by discrete foam system based on quaternized guar gum / foaming agent 季铵化瓜尔胶/发泡剂分离泡沫系统对呼吸性粉尘的除尘效果研究
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-09-30 DOI: 10.1016/j.powtec.2025.121715
Qing Zhang , Mingyun Tang , Bingyou Jiang , Guanglong Dai , Jinwei Qiu , Liang Zhou , Jianguo Cai , Baiju Zhang
{"title":"Study on the dust removal efficiency of respirable dust by discrete foam system based on quaternized guar gum / foaming agent","authors":"Qing Zhang ,&nbsp;Mingyun Tang ,&nbsp;Bingyou Jiang ,&nbsp;Guanglong Dai ,&nbsp;Jinwei Qiu ,&nbsp;Liang Zhou ,&nbsp;Jianguo Cai ,&nbsp;Baiju Zhang","doi":"10.1016/j.powtec.2025.121715","DOIUrl":"10.1016/j.powtec.2025.121715","url":null,"abstract":"<div><div>The capture and sedimentation efficiency of traditional spray technology for respirable dust (PM<sub>2.5</sub>/PM<sub>10</sub>) in coal mine is too low, which seriously affects mine safety and occupational health. In this study, a discrete foam dust removal technology was innovatively proposed. A discrete foam dust suppressant was developed with APG0810/SDS as foaming agent (SAP), natural polymer guar gum (GG) and quaternary ammonium modified cationic guar gum (CGG) as foam stabilizer. Through experiments and molecular simulation studies, it is shown that compared with SAP/GG system, SAP/CGG system adds quaternary ammonium salt groups, the contact angle is reduced by 7.73 %, the apparent viscosity is increased by 27.61 %, and the wetting and adhesion properties of bituminous coal are enhanced. Considering the economic benefits, and through the three-factor orthogonal experiment of roadway wind speed, discrete foam number and half-life, 0.5 % SAP + 0.3 % CGG was determined as the best ratio. The foam cluster formed by this system can effectively wet, wrap and settle the respirable dust. Compared with spray dust reduction, the dust reduction efficiency of discrete foam dust removal for fine particle dust is increased by 42.48 %, and the visibility of roadway is improved. This study is of great significance for the treatment of underground respirable dust.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"469 ","pages":"Article 121715"},"PeriodicalIF":4.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264611","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
Modelling of critical fragment size and rock breaking efficiency evaluation in drilling process 钻井过程临界破岩尺寸建模及破岩效率评价
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-09-30 DOI: 10.1016/j.powtec.2025.121712
Haoteng Wang , Mingming He , Tan Liuxin , Pu Cheng , Xiaoliang Yao , Bo Zhang , Xudong Ma , Qin Zhao
{"title":"Modelling of critical fragment size and rock breaking efficiency evaluation in drilling process","authors":"Haoteng Wang ,&nbsp;Mingming He ,&nbsp;Tan Liuxin ,&nbsp;Pu Cheng ,&nbsp;Xiaoliang Yao ,&nbsp;Bo Zhang ,&nbsp;Xudong Ma ,&nbsp;Qin Zhao","doi":"10.1016/j.powtec.2025.121712","DOIUrl":"10.1016/j.powtec.2025.121712","url":null,"abstract":"<div><div>Understanding the rock fracture behaviors during drilling is crucial to evaluating the breaking efficiency. Since fragment generation is intrinsically related to drilling mechanism, the fragment size distribution is determined by the drilling response. In this paper, an analytical model is established to describe the fragment generation, from which a function of the cutting force incorporating critical fragment size, rock strength and drilling parameters is derived. A collapse index is defined to evaluate drilling efficiency. Digital drilling tests, coupled with laboratory tests, were conducted on four rock types to investigate the effect of confining pressures and lithologies on the fragment characteristics and drilling response. Results shown that the effect of confining pressure on rock fragmentation behavior during drilling becomes more significant, manifested as a segmented drilling response. The distribution characteristics of rock fragment was examined by the Rosin-Rammler (R-R) function to determine the critical size in drilling process. The fracture model prediction results are in good agreement with the experimental results. The proposed drilling efficiency index decreases with increasing confining pressure, due to the enhancing effect of confining pressure on rock toughness. A comparison among drilling efficiency, production capacity and specific cutting energy confirmed its practical applicability. The innovation of this study is to provide a method to evaluate rock breaking efficiency and to determine fragment size by considering drilling response.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"469 ","pages":"Article 121712"},"PeriodicalIF":4.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264702","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
A modified Johnson-Kendall-Roberts contact model for pavement engineering: Consideration of time-dependent surface energy 一种改进的路面工程Johnson-Kendall-Roberts接触模型:考虑时变表面能
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-09-30 DOI: 10.1016/j.powtec.2025.121701
Dong Feng, Chaoliang Fu, Pengfei Liu
{"title":"A modified Johnson-Kendall-Roberts contact model for pavement engineering: Consideration of time-dependent surface energy","authors":"Dong Feng,&nbsp;Chaoliang Fu,&nbsp;Pengfei Liu","doi":"10.1016/j.powtec.2025.121701","DOIUrl":"10.1016/j.powtec.2025.121701","url":null,"abstract":"<div><div>The Johnson-Kendall-Roberts (JKR) contact model is widely used in the discrete element method to simulate the dynamic behavior of particulate materials by assuming constant surface energy. However, under typical pavement conditions, such as asphalt mixture compaction and moist subgrade drying, particle surface energy varies with temperature and moisture content. This limits the accuracy of the traditional JKR model in capturing the evolution of inter-particle adhesion. To address this limitation, a time-dependent modified JKR contact model was proposed for pavement engineering applications. The modified model's performance was evaluated through a ball–ball pull-off test and validated via a ball gravity loading test based on the conservation of energy. Further, the case studies of pre-compaction and particle dewatering in pavement engineering were conducted using the modified JKR contact model. Results show that, under four different conditions, the compaction impulse increased by 15.57 %, 14.54 %, 13.04 %, and 14.87 %, indicating that the traditional model underestimates the additional compaction energy caused by enhanced adhesion and fails to accurately guide temperature control during compaction. For particle dewatering, the angle of repose decreased from 48.4° to 37.7°, reflecting the transition from a flowable to a stable particle structure. This enables better identification of the optimal construction window during the drying of subgrade materials. Overall, this study enhances the accuracy and applicability of the JKR contact model in pavement engineering by capturing dynamic adhesive behavior more realistically.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121701"},"PeriodicalIF":4.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217203","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
Synergistic cavitation-milling for cement groutability enhancement: Particle fragmentation mechanisms and parameter optimization 提高水泥可注浆性的协同空化磨粉:颗粒破碎机制和参数优化
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-09-30 DOI: 10.1016/j.powtec.2025.121700
Peizhi Cao , Guijin Zhang , Jie Liu , Lifeng Chen , Canghai Hu
{"title":"Synergistic cavitation-milling for cement groutability enhancement: Particle fragmentation mechanisms and parameter optimization","authors":"Peizhi Cao ,&nbsp;Guijin Zhang ,&nbsp;Jie Liu ,&nbsp;Lifeng Chen ,&nbsp;Canghai Hu","doi":"10.1016/j.powtec.2025.121700","DOIUrl":"10.1016/j.powtec.2025.121700","url":null,"abstract":"<div><div>The limited groutability of conventional cement grouts in narrow fractures and micropore networks remains a major challenge for effective seepage control in grouting engineering. This study proposes a novel cavitation-milling synergy processing methodology (CMSP) to enhance cement groutability through particle fragmentation. By integrating theoretical analysis, computational fluid dynamics (CFD) simulations, and experimental validation, the cavitation-driven mechanisms of particle fragmentation and optimal parameters were systematically investigated. Theoretical analysis revealed that the critical conditions for cavitation-driven fragmentation become more stringent with decreasing particle size and water-cement (<em>W/C</em>) ratio, requiring higher wall-impact velocities, reduced effective dimensionless distances, and smaller critical maximum cavitation bubble radius. Numerical simulations demonstrated that cavitation intensity is positively correlated with inlet pressure (<em>P</em><sub>in</sub>) and <em>W/C</em> ratio, with an optimal jet stand-off distance (<em>D</em> = 15 mm) identified for maximizing the cavitation effect. Experimental results confirmed that the CMSP system effectively suppresses cement particle agglomeration and enhances size reduction efficiency, achieving remarkable comminution performance under optimal condition: <em>D</em><sub>90</sub> &lt; 30 μm, <em>D</em><sub>50</sub> &lt; 10 μm, and nano-scale particle fraction (&lt;1 μm) increased to 8.72 % after 60 min treatment. Parametric analysis indicated that <em>P</em><sub>in</sub> is the dominant control factor, followed by <em>W/C</em> ratio, with optimal fragmentation efficiency achieved at a grinding media filling rate (<em>FR</em>) of 20 %. This research provides fundamental insights into cavitation-driven cement fragmentation mechanisms and establishes practical guidelines for enhancing cement groutability in engineering applications through CMSP.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"469 ","pages":"Article 121700"},"PeriodicalIF":4.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264708","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
Improving screening efficiency: a novel dual-drive cooperative screening system based on flexible rebound baffle and vibrating flip-flow screen coupling 提高筛分效率:一种基于柔性回弹挡板和振动转流筛耦合的新型双驱动协同筛分系统
IF 4.6 2区 工程技术
Powder Technology Pub Date : 2025-09-30 DOI: 10.1016/j.powtec.2025.121696
Yixin Wang , Xiaoling Fan , Guofeng Zhao , Dongdong Lin , Runhui Geng , Ningning Xu , Xinwen Wang
{"title":"Improving screening efficiency: a novel dual-drive cooperative screening system based on flexible rebound baffle and vibrating flip-flow screen coupling","authors":"Yixin Wang ,&nbsp;Xiaoling Fan ,&nbsp;Guofeng Zhao ,&nbsp;Dongdong Lin ,&nbsp;Runhui Geng ,&nbsp;Ningning Xu ,&nbsp;Xinwen Wang","doi":"10.1016/j.powtec.2025.121696","DOIUrl":"10.1016/j.powtec.2025.121696","url":null,"abstract":"<div><div>Screening plays a critical role in particle separation during coal processing. However, the screening efficiency of vibrating flip-flow screens (VFFSs) in processing sticky fine materials remains to be further improved. In this study, an innovative dual-drive cooperative screening system (DDCSS) is presented, which integrates flexible rebound baffles with VFFSs. The influence of the baffle installation height (<em>H</em> value) on the motion characteristics and screening efficiency of the materials on the screen is systematically investigated. Additionally, we explore the potential for reducing screen length through <em>H</em> value optimization. The findings demonstrate that the DDCSS significantly enhances screening performance through two key mechanisms: first, by increasing the utilization rate of the screen plates, and second, by intensifying the jumping motion of the materials on the screen. With the optimization of screening efficiency as the primary objective, the system attains a maximum efficiency gain of 11.01 %. Moreover, when the primary objective is to optimize the screen length, an <em>H</em> value of 120 mm enables the system to achieve the same screening performance as a screen length of 2624 mm without baffles, using only 64.96 % of the original screen length. This discovery offers critical insights for the enhancement of energy utilization efficiency.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"469 ","pages":"Article 121696"},"PeriodicalIF":4.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264600","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
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