Powder Technology最新文献_第10页

Evaluating energy evolution and damage in rice kernels under compressive loadings 压缩载荷作用下米粒能量演化与损伤的评价

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-11 DOI: 10.1016/j.powtec.2025.121644

Weronika Kruszelnicka , Kingsly Ambrose , Janusz Kowal , Patrycja Walichnowska , Andrzej Tomporowski

{"title":"Evaluating energy evolution and damage in rice kernels under compressive loadings","authors":"Weronika Kruszelnicka , Kingsly Ambrose , Janusz Kowal , Patrycja Walichnowska , Andrzej Tomporowski","doi":"10.1016/j.powtec.2025.121644","DOIUrl":"10.1016/j.powtec.2025.121644","url":null,"abstract":"<div><div>Rice processing is characterized by high energy consumption and significant product losses due to kernel mechanical damage in the form of fissuring and breakage. The dependance of grain properties on many inherent and external factors makes it difficult to predict material damage. For this reason, detailed descriptions of the mechanisms of rice kernel breakage is scarce. The aim of this study is to deepen the knowledge about the rice kernel breakage mechanism under single and repeated compressive loadings, as affected by moisture content and grain size. Based on the experimental results, the mechanism of kernel weakening as the evolution of damage and the strain energy were identified. For damage evolution, a power function was proposed to describe the change in damage with the number of loading cycles. It was found that the rice kernel breakage behavior, especially the damage accumulation, resulting breakage probability and fatigue life, is dependent on the moisture content and kernel thickness. The presented study shows that the breakage of rice kernels can be predicted from the change in strain energy. The results from this work can be applied to improvement in rice processing and can significantly contribute to the reduction of material and energy losses.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121644"},"PeriodicalIF":4.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096791","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 analysis of scree slope behaviour: The influence of particle morphology 碎石边坡特性的实验分析：颗粒形态的影响

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-11 DOI: 10.1016/j.powtec.2025.121627

Bei-Bing Dai , Wei-Tao Zhong , Feng-Tao Liu

{"title":"Experimental analysis of scree slope behaviour: The influence of particle morphology","authors":"Bei-Bing Dai , Wei-Tao Zhong , Feng-Tao Liu","doi":"10.1016/j.powtec.2025.121627","DOIUrl":"10.1016/j.powtec.2025.121627","url":null,"abstract":"<div><div>This study conducts a series of physical model tests to investigate the effect of particle morphology on the scree slope characteristics which mainly refer to the particle sorting and slope angle. Granular-mixture release tests show that the greater the morphological disparity — i.e., the differences in particle size and shape—between two constituent materials, the more prominent the particle sorting becomes. The sorting degree increases with the relative particle size and shape factors (<em>SF</em><sub>r</sub> and <em>OR</em><sub>r</sub>). A larger size disparity tends to result in a smaller slope angle and a more stable structure, while a greater shape discrepancy leads to a larger slope angle and a less stable structure. Single-particle release tests indicate that large, regular-shaped particles tend to travel farther, whereas small, irregular ones travel less. Compared to deposits of regular-shaped particles, deposits of irregular-shaped particles exhibit a higher resistance to impact and a lower energy absorption capacity due to a less notable impact deformation, allowing released particles to retain more kinetic energy and move further. Conceptual models are proposed to illustrate how particle morphology influences particle sorting from the perspective of particle motion. The influence of particle morphology on slope angle is further explained through its effect on the packing state and interlocking of deposited particles. Finally, a correlation between particle sorting and maximum slope angle is explored via a new concept of relative flowability, defined as the ratio of the angle of repose between constituent materials.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121627"},"PeriodicalIF":4.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096868","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 comparative study of bionic method, impactor and in silico method: Evaluation of DPI in specific airway models 仿生法、冲击器法和计算机模拟法的比较研究：特定气道模型DPI的评价

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-10 DOI: 10.1016/j.powtec.2025.121637

Xudong Zhou , Fen Huang , Aibing Yu , Ya Zhang , Hao Miao , Renjie Li , Yaning Li , Zhenbo Tong , Changhui Li

{"title":"A comparative study of bionic method, impactor and in silico method: Evaluation of DPI in specific airway models","authors":"Xudong Zhou , Fen Huang , Aibing Yu , Ya Zhang , Hao Miao , Renjie Li , Yaning Li , Zhenbo Tong , Changhui Li","doi":"10.1016/j.powtec.2025.121637","DOIUrl":"10.1016/j.powtec.2025.121637","url":null,"abstract":"<div><div>The main objective of this work is to develop a novel bionic experimental platform for evaluating orally inhaled drug delivery and to conduct a comparative study among the platform, cascade impactor and <em>in silico</em> methods. A reliable experimental platform fully considering environment, human factors and inhaled drugs was developed to evaluate the pulmonary regional deposition directly. Bionic experimental results were compared to <em>in silico and in vivo</em> data to gain a more comprehensive understanding of their correlation. The findings indicate that inhalation conditions, mouth-throat geometric variation and mass median aerodynamic diameter (MMAD) affected delivery and deposition patterns. Underestimated MMAD obtained by the cascade impactor led to lower <em>in silico</em> MT deposition and discrepancy between bionic experimental and <em>in silico</em> results. Furthermore, modified prediction methods based on cascade impactor and <em>in silico</em> method were proposed to improve the accuracy of prediction results and better consistency was observed by comparing with bionic experimental results. Overall, Bionic experimental platform and modified prediction methods were developed to better predict pulmonary drug deposition distribution and to further our understanding of the aerosol dynamics and optimization of inhaled drug delivery. Bionic experimental platform based on realistic models offers a powerful tool to predict the pulmonary drug deposition accurately and directly prior to <em>in vivo</em> testing. Modified prediction methods can indirectly predict the deposition results based on a combination of cascade impactor and <em>in silico</em> data.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121637"},"PeriodicalIF":4.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046421","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

Surface chemistry analysis of aluminum powders through triboelectric charging: Effect of composition, particle size distribution and moisture adsorption 摩擦电荷作用下铝粉的表面化学分析：成分、粒度分布和水分吸附的影响

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-10 DOI: 10.1016/j.powtec.2025.121636

Ali N. Alagha , Emilio Galindo , Martin Conlon , José Muñiz , Kamran Azari , Evan Butler-Jones , Mathieu Brochu

{"title":"Surface chemistry analysis of aluminum powders through triboelectric charging: Effect of composition, particle size distribution and moisture adsorption","authors":"Ali N. Alagha , Emilio Galindo , Martin Conlon , José Muñiz , Kamran Azari , Evan Butler-Jones , Mathieu Brochu","doi":"10.1016/j.powtec.2025.121636","DOIUrl":"10.1016/j.powtec.2025.121636","url":null,"abstract":"<div><div>This work explores the interactions between particle size distribution (PSD), specific surface area (SSA), and relative humidity levels (RH; as received, 20–60 % RH) on the triboelectric charging behavior of two aluminum alloys, namely AlSi10Mg and AlSi9Cu3. The results, validated via X-ray photoelectron spectroscopy (XPS), demonstrate that the SSA strongly influences surface chemical composition and its evolution under humid conditions through the newly developed triboelectric charging methodology. Higher SSA promoted moisture adsorption and surface hydroxylation. In the as-received condition, WF values varied between 4.43 and 4.64 eV, with Si-rich powders exhibiting higher values than those richer in Al₂O₃. Higher RH progressively lowered the WF due to moisture-driven surface dipoles and led to up to 51 % reduction in charge density. Compositional differences between AlSi10Mg and AlSi9Cu3 produced distinct surface species under humid conditions. In AlSi10Mg, the formation of the surface hydroxides (AlO(OH) and SiO(OH)<sub>2</sub>) promoted faster triboelectric charge dissipation. In contrast, besides the hydroxides present in AlSi10Mg, the copper content in AlSi9Cu3 powders resulted in reduced charge density due to the formation of an additional surface hydroxide specie (Cu(OH)<sub>2</sub>), contributing to localized charge retention. Modeling the charging behavior showed that the n-exponent decreased with RH for AlSi10Mg (from ∼1.04 to 0.92) but increased for AlSi9Cu3 (from ∼0.72 to 0.91) at equivalent SSA, underscoring the distinct effects of Si- and Cu-hydroxides on charge relaxation. These findings highlight that triboelectric charging is influenced by surface chemistry and particle size distribution, variables to be considered in the analysis.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121636"},"PeriodicalIF":4.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046419","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

Interaction between viscous fluids and media balls in wet ball milling 湿式球磨中粘性流体与介质球的相互作用

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-10 DOI: 10.1016/j.powtec.2025.121634

Tomoya Taguchi (田口友也) , Tetsuro Yanaseko (柳迫徹郎) , Masaki Hiratsuka (平塚将起) , Koji Hasegawa (長谷川浩司)

{"title":"Interaction between viscous fluids and media balls in wet ball milling","authors":"Tomoya Taguchi (田口友也) , Tetsuro Yanaseko (柳迫徹郎) , Masaki Hiratsuka (平塚将起) , Koji Hasegawa (長谷川浩司)","doi":"10.1016/j.powtec.2025.121634","DOIUrl":"10.1016/j.powtec.2025.121634","url":null,"abstract":"<div><div>An experimental study was conducted on the interaction between a viscous fluid and solid spheres in a ball mill to elucidate and optimize the slurry preparation process for ceramics. In ceramic manufacturing, the grinding and mixing of raw materials are critical because they form the most upstream process and directly influence product quality. However, this process significantly relies on empirical rules and the tacit knowledge of engineers, and a detailed understanding—particularly through slurry-mixing visualization and optimization—remaining largely unexplored. Slurry-mixing conditions in a ball mill were replicated using a 90 wt% glycerin solution as a Newtonian fluid and a 0.92 wt% carboxy methyl cellulose aqueous solution as a non-Newtonian fluid, which are transparent fluids with viscosities similar to that of actual slurry, enabling visualization of the mixing process. The effects of the number of balls in the rotating cylindrical vessel and the rotational speed of the vessel on the mixing process were visualized. The results showed that oscillation and falling of media balls became more pronounced at rotation speeds between 65 and 85 rpm, enhancing the mixing efficiency. The ball-filling ratio, <em>J</em>, significantly influenced mixing: <em>J</em> = 0.2 induced frequent sliding and falling of balls, leading to effective energy transfer, whereas <em>J</em> = 0.3 suppressed dynamic motion. In addition, the effects of the viscous fluid and solid spheres on mixing dynamics were analyzed in detail using particle image velocimetry. The findings of this study are expected to provide practical guidance on the optimization of ball mill operations.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121634"},"PeriodicalIF":4.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096978","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 energy balance model for predicting agglomerate size during the fluidization reduction of CuO with the assistance of Fe microspheres 铁微球辅助下CuO流化还原过程中团聚体粒径预测的能量平衡模型

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-10 DOI: 10.1016/j.powtec.2025.121635

Da Li , Xue Xue , Qingshan Zhu , Jun Li , Hongzhong Li

引用次数: 0

Enhancing copper–molybdenum separation: The role of DMTD in flotation processes 促进铜钼分离：DMTD在浮选过程中的作用

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-10 DOI: 10.1016/j.powtec.2025.121642

Qiming Zhuo , Decheng Chen , Zenan Wang , Wei Han , Yongming Song , Wenli Liu , Peng Xi

{"title":"Enhancing copper–molybdenum separation: The role of DMTD in flotation processes","authors":"Qiming Zhuo , Decheng Chen , Zenan Wang , Wei Han , Yongming Song , Wenli Liu , Peng Xi","doi":"10.1016/j.powtec.2025.121642","DOIUrl":"10.1016/j.powtec.2025.121642","url":null,"abstract":"<div><div>The separation of chalcopyrite and molybdenite in porphyry copper–molybdenum ores is challenging owing to their similar floatabilities, making the use of depressants necessary. Inorganic depressants are commonly employed in the flotation industry to increase the difference in hydrophobicity between chalcopyrite and molybdenite; however, these depressants pose significant environmental risks. Recently, novel organic depressants have attracted considerable interest because of their abundance and low toxicity. This study investigated the use of 2,5-dimercapto-1,3,4-thiadiazole (DMTD), an activator recently employed in copper oxide flotation, as a depressant for the separation of chalcopyrite and molybdenite. Micro–flotation experiments demonstrated that DMTD exhibits a notable selective depression effect, significantly suppressing the flotation of chalcopyrite without adversely affecting the flotation of molybdenite. Furthermore, DMTD maintained its depression effect on chalcopyrite flotation even in the presence of xanthate. Contact angle measurements were used to analyze changes in hydrophobicity, corroborating the micro–flotation results, while SEM-EDS elemental distribution maps further confirmed the selective adsorption of DMTD on the chalcopyrite surface. XPS and AFM analyses were conducted to elucidate the microscale interaction mechanism between DMTD and chalcopyrite. The specific interaction sites on the chalcopyrite surface were identified through changes in elemental binding energies, while the evolution of surface morphology revealed how DMTD interacts with chalcopyrite in the xanthate system.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121642"},"PeriodicalIF":4.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046427","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 surface modification of silver powder: Mechanisms for tapped density enhancement and low-temperature sintering 银粉的协同表面改性：增强密度和低温烧结的机理

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-10 DOI: 10.1016/j.powtec.2025.121641

Wei Wang , Jia Liu , Yapeng Jia , Jun Yin , Lianzhou Zhang , Xuefei Zhou , Junpeng Li , Jianqiang Wang , Guoping Yang , Wenyan Zhang

{"title":"Synergistic surface modification of silver powder: Mechanisms for tapped density enhancement and low-temperature sintering","authors":"Wei Wang , Jia Liu , Yapeng Jia , Jun Yin , Lianzhou Zhang , Xuefei Zhou , Junpeng Li , Jianqiang Wang , Guoping Yang , Wenyan Zhang","doi":"10.1016/j.powtec.2025.121641","DOIUrl":"10.1016/j.powtec.2025.121641","url":null,"abstract":"<div><div>Silver powder, as a pivotal material in electronics and new energy applications, critically depends on its tapped density and sintering activity. This study systematically optimizes the physical properties and sintering performance of micron silver powder through a synergistic surface modification strategy integrating jet milling classification and high-speed shear shaping. Results demonstrate that the modified silver powder exhibits a 40–45 % enhancement in tapped density (5.91 g/cm<sup>3</sup>), a 50–56 % increase in apparent density (4.01 g/cm<sup>3</sup>), a narrowed particle size distribution span (reduced from 2.93 to 0.52), and significantly improved flowability (angle of repose: 28.97°). The conductive silver paste formulated with modified powder achieves optimized rheological properties, including a 41.8 % higher 17-s recovery rate (84.5 %) and a 79.08 % reduction in static viscosity. Sintering experiments revealed that the modified silver powder achieved a maximum reduction in sintering temperature of 100 °C, with a relative density exceeding 97.3 % at 650 °C, with grain boundary diffusion and defect density modulation identified as the core mechanisms for densification. This work elucidates the synergistic regulatory mechanisms of surface modification on the sintering behavior of silver powders, aligning with the principles of tapped density enhancement and low-temperature sintering.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121641"},"PeriodicalIF":4.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046321","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

Deep learning-based reconstruction of three-dimensional particle volume fraction fields in solid-liquid two-phase pipe flow from single cross-sectional data 基于深度学习的固液两相管流单截面数据三维颗粒体积分数场重建

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-09 DOI: 10.1016/j.powtec.2025.121616

Shengpeng Xiao , Chuyi Wan , Hongbo Zhu , Dai Zhou , Juxi Hu , Yan Bao , Kai Cao , Ke Zhao

{"title":"Deep learning-based reconstruction of three-dimensional particle volume fraction fields in solid-liquid two-phase pipe flow from single cross-sectional data","authors":"Shengpeng Xiao , Chuyi Wan , Hongbo Zhu , Dai Zhou , Juxi Hu , Yan Bao , Kai Cao , Ke Zhao","doi":"10.1016/j.powtec.2025.121616","DOIUrl":"10.1016/j.powtec.2025.121616","url":null,"abstract":"<div><div>Accurate acquisition of the particle volume fraction (PVF) field of solid–liquid two-phase flow in vertical lift pipes in deep-sea mining is crucial for system transport efficiency and operational safety. However, existing measurements provide only localized information while numerical simulations are computationally intensive, creating the challenge of reconstructing global fields from minimal measurement information. This study developed a deep learning model to reconstruct the global three-dimensional instantaneous Particulate Volume Fraction (PVF) field from single cross-section data. It employs a two-stage architecture, featuring an upsampling module and an enhanced autoencoder with skip connections and multi-head cross-attention, to accurately capture complex particle distributions. The results indicate that the model achieves excellent reconstruction performance with a coefficient of determination R<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span> = 0.962 and a mean square error = <span><math><mrow><mn>3</mn><mo>.</mo><mn>98</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup></mrow></math></span>, accurately capturing irregular particle aggregation patterns. Robustness analysis demonstrates stable reconstruction performance across varying input cross-section positions and acceptable accuracy under severe input noise. Furthermore, when the pipe length is extended to 50 times its diameter, a slight performance decrease alongside a linear increase in cost indicates strong potential for application to lengths hundreds of times diameter. Transfer learning evaluation shows efficient adaptation to new particle concentrations using only 10% of training samples, reducing training time by over 90% while maintaining acceptable accuracy.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121616"},"PeriodicalIF":4.6,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119031","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 study on static horizontal pressure of three-compartment silo wall and dynamic overpressure characteristics of material discharge 三室筒仓壁静水平压力及出料动超压特性试验研究

IF 4.6 2区工程技术

Powder Technology Pub Date : 2025-09-09 DOI: 10.1016/j.powtec.2025.121639

Haiyan Liu , Xiaoxuan Fan , Lingyu Wu , Ying Li , Hongbo Qu , Xianmei He

{"title":"Experimental study on static horizontal pressure of three-compartment silo wall and dynamic overpressure characteristics of material discharge","authors":"Haiyan Liu , Xiaoxuan Fan , Lingyu Wu , Ying Li , Hongbo Qu , Xianmei He","doi":"10.1016/j.powtec.2025.121639","DOIUrl":"10.1016/j.powtec.2025.121639","url":null,"abstract":"<div><div>The three-compartment silo with a fan-shaped cross-section has caused problems in accurately calculating the depth of the silo based on the traditional height-to-diameter ratio. This paper designed a three-compartment acrylic silo model with a height of 2000 mm and a diameter of 1000 mm, and completed six different storage height feeding-settling-discharging experiments. Combining the deep and shallow silo theories in Chinese standards, this paper analyzed the distribution patterns and influencing factors of static and dynamic horizontal pressure.The criteria for classifying three-compartment silos into deep and shallow silos are provided. When the height of the silo is greater than or equal to its diameter, a three-compartment silo with a sector-shaped cross-section should be considered a deep silo design. When the height of the silo is less than its diameter, it should be considered a shallow silo design.Static horizontal pressure increases with increasing storage height, and the static pressure value of cement is higher than that of ceramic beads. The deviation between the test values and the standard deep silo calculation values is within 30 %, verifying the safety of the standard. Dynamic horizontal pressure reaches its peak at the beginning of discharge, and the overpressure coefficient of ceramic beads is significantly higher than that of cement.The study revised the horizontal pressure calculation formula based on experimental data and the classification criteria for deep and shallow warehouses, introduced correction factors of 1.1 and 1.45, and proposed a revised formula.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"468 ","pages":"Article 121639"},"PeriodicalIF":4.6,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046426","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