Powder Technology最新文献_第10页

Discrete element simulation of discharge behavior in an asymmetric hopper: Insights on particle flow pattern, jamming and mass flow rate 非对称料斗卸料行为的离散元模拟：关于颗粒流型、堵塞和质量流量的见解

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-22 DOI: 10.1016/j.powtec.2025.121059

Dianyu E , Bin Zhao , Jiaxin Cui , Zongyan Zhou , Weifu Sun , Yinxuan Qiu , Chao Yang , Lei Yang

引用次数: 0

Numerical modelling on the ultra-low emission of NOx in hot blast stove-parametric study, optimization, mechanism, and solutions 热风炉超低NOx排放数值模拟——参数研究、优化、机理及解决方案

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-18 DOI: 10.1016/j.powtec.2025.121041

Deyu Yue , Zhong Li , Guangchao Wei , Meng Li , Chao Li , Guanyin Wu , Peng Han , Xizhong An , Hao Zhang , Haitao Fu , Xiaohong Yang , Qingchuan Zou

{"title":"Numerical modelling on the ultra-low emission of NOx in hot blast stove-parametric study, optimization, mechanism, and solutions","authors":"Deyu Yue , Zhong Li , Guangchao Wei , Meng Li , Chao Li , Guanyin Wu , Peng Han , Xizhong An , Hao Zhang , Haitao Fu , Xiaohong Yang , Qingchuan Zou","doi":"10.1016/j.powtec.2025.121041","DOIUrl":"10.1016/j.powtec.2025.121041","url":null,"abstract":"<div><div>Aiming at the problem of ultra-low NOx emission from hot blast stoves in the ironmaking process, this paper takes the external combustion hot blast stove that used in a domestic steel plant as the research object. Through systematic numerical simulations, the influences of process parameters (e.g., the air excess coefficient <em>α</em>, preheating temperature of gas <em>T</em><sub>gas</sub> and air <em>T</em><sub>air</sub>, and gas flow rate <em>V</em><sub>gas</sub>) on the generation of NOx during the combustion process in the stove and the change of the composition of NOx in the flue gas were investigated. The mechanism of thermal NOx generation and the effective control scheme for high temperature combustion conditions are discussed. The NOx emission prediction model is established on this basis. The results show that when <em>α</em> is 1.02, the combustion effect is better, the gas is completely burnt out, and the NO emission is less. When <em>α</em> is about 1.60, the NO concentration is maximum. Increasing the preheating temperature can effectively increase the temperature in the stove. For every incremental preheating temperature with 100 K, the average temperature at the top of the regenerative chamber can be increased by about 20 K. When <em>α</em> is fixed, <em>V</em><sub>gas</sub> can reduce the retention time of the gas in the stove and the total amount of NO generation. It is proved that the prediction model based on the numerical results can achieve low NO emission under the condition of higher temperature in the stove, which will provide effective references for the research and industrial production of different types of hot blast stoves.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"460 ","pages":"Article 121041"},"PeriodicalIF":4.5,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855818","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

Simulation-based characterization of alginate aerogel packed bed compaction via DEM-BPM 基于DEM-BPM的海藻酸盐气凝胶充填床压实模拟表征

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-18 DOI: 10.1016/j.powtec.2025.121048

C.L. Alves , L. Gibowsky , B. Schroeter , I. Smirnova , S. Heinrich

{"title":"Simulation-based characterization of alginate aerogel packed bed compaction via DEM-BPM","authors":"C.L. Alves , L. Gibowsky , B. Schroeter , I. Smirnova , S. Heinrich","doi":"10.1016/j.powtec.2025.121048","DOIUrl":"10.1016/j.powtec.2025.121048","url":null,"abstract":"<div><div>The global demand for aerogels is constantly growing, thus, optimizing and scaling up the production processes have become increasingly important in the last decade. The utilization of millimeter-sized aerogel particles for such purposes is typically preferred due to inherent advantages in handling and production compared to other geometries. The production of these particles is most commonly accomplished using a particle packed bed (autoclave). This process presents, however, several challenges, including the impact of mechanical loads on the quality of the product. Therefore, this work focuses on deepening the understanding of mechanical properties and deformation mechanisms of aerogel particles in packed beds under uniaxial compaction. The investigated alginate aerogel particles are characterized by a spherical shape (circularity of 0.96), a specific surface area of ∼352 m<sup>2</sup>/g, an average diameter of ∼3.3 mm, and a bulk density of ∼0.05 g/cm<sup>3</sup>. In addition, this study extends a DEM-BPM model to capture the mechanical deformation of biopolymer aerogels, both as individual particles and within packed beds. The simulations were calibrated and validated using experimental data from uniaxial compaction tests. An optimization methodology was implemented to reduce reliance on traditional trial-and-error methods and improve the model's accuracy. The results demonstrate that the proposed DEM-BPM model effectively replicates the mechanical behavior of alginate aerogels, showing strong agreement between experimental data and minimal deviations for both single particles and packed beds (R<sup>2</sup><span><math><mo>≥</mo></math></span> 0.93). This model serves as a promising tool for gaining deeper insights into the mechanical properties of aerogels and improving production efficiency. Additionally, the DEM-BPM model can be expanded to incorporate intermediate products, such as hydrogels and alcogels, enabling process optimization at every stage of aerogel manufacturing.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"460 ","pages":"Article 121048"},"PeriodicalIF":4.5,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882600","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

Mechanical blending and microscopic image processing for evaluating homogeneity in nano- and micron-sized powder mixtures 用于评价纳米和微米级粉末混合物均匀性的机械混合和显微图像处理

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-18 DOI: 10.1016/j.powtec.2025.121047

Ella L. Dzidziguri , Andrey A. Vasilev , Roman A. Vakhrushev , Konstantin N. Krestnikov , Evgeny A. Kolesnikov , Sergey A. Eremin , Leonid V. Fedorenko

{"title":"Mechanical blending and microscopic image processing for evaluating homogeneity in nano- and micron-sized powder mixtures","authors":"Ella L. Dzidziguri , Andrey A. Vasilev , Roman A. Vakhrushev , Konstantin N. Krestnikov , Evgeny A. Kolesnikov , Sergey A. Eremin , Leonid V. Fedorenko","doi":"10.1016/j.powtec.2025.121047","DOIUrl":"10.1016/j.powtec.2025.121047","url":null,"abstract":"<div><div>This paper presents the results of mechanically blending AlSi<sub>10</sub>Mg micropowder with Co<sub>3</sub>O<sub>4</sub> nanoparticles, resulting in the formation of a nanoparticle coating on the surface of the coarse particles. An automated computer program was developed using Python's OpenCV library to process EDX elemental mapping images and evaluate the homogeneity of a mixture of nano- and micron-sized powders through surface analysis of sample images. The proposed methodology employs Otsu's thresholding technique to segment images into regions of interest and calculates quantitative data on the areas occupied by micron- and nanoscale components, which are key indicators for assessing powder mixture homogeneity. The developed technique is cost-effective and demonstrated its efficacy in measuring the homogeneity distribution of nanoparticles within a micropowder using a set of microscopy images. The only requirement for the method's applicability is a difference in the elemental composition of the powders. In this work, the homogeneity of micron-sized AlSi<sub>10</sub>Mg powder mixed with varying concentrations of cobalt oxide nanoparticles was analyzed using the processing of elemental mapping images. The results showed that 8 h of blending in a planetary ball mill with grinding balls was sufficient to achieve a homogeneous powder mixture.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"460 ","pages":"Article 121047"},"PeriodicalIF":4.5,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855817","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 and analysis of the influence of the pipe diameter on pressure fluctuations in pneumatic conveying systems with fine bulk solids 细粒散装固体物料气力输送系统中管径对压力波动影响的实验研究与分析

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-18 DOI: 10.1016/j.powtec.2025.121031

M. Dikty

{"title":"Experimental investigation and analysis of the influence of the pipe diameter on pressure fluctuations in pneumatic conveying systems with fine bulk solids","authors":"M. Dikty","doi":"10.1016/j.powtec.2025.121031","DOIUrl":"10.1016/j.powtec.2025.121031","url":null,"abstract":"<div><div>When reducing the conveying gas velocity during the pneumatic transport of fine-grained bulk materials, the process goes through a wide variety of flow modes. If the conveying gas velocity is reduced to such an extent that a blockage occurs, the system-specific pressure limit has been exceeded. Along this reduction in velocity, there are pressure fluctuations of varying degrees, the so-called pressure pulsations. These have been intensively studied over the past 30 years, mainly about the associated flow mode. In this paper, the pressure pulsation is systematically investigated in dependence on the pipe diameter. For this purpose, conveying tests were carried out with different conveying air mass flows, starting with the dilute mode, and ending with the pipe blockage. Two different pipe diameters, 76.3 mm and 101.7 mm were investigated. The pressure values were sampled and evaluated at 5000 Hz. Criteria for assessing pressure pulsation are systematically related to the solid loading ratio (SLR), the Froude number and the Euler number based on a dimensional analysis. The resulting dependencies are evaluated qualitatively and quantitatively.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"460 ","pages":"Article 121031"},"PeriodicalIF":4.5,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855819","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

Design and evaluation of abrasive wear testing device for scraper conveyor middle plates 刮板输送机中间板磨料磨损试验装置的设计与评价

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-18 DOI: 10.1016/j.powtec.2025.121042

Shuan Huang , Bo Li , Haozhou Ma , Rui Xia , Xuewen Wang , Weixiu Cui , Peng Zhang , Hongzhang Jiao

{"title":"Design and evaluation of abrasive wear testing device for scraper conveyor middle plates","authors":"Shuan Huang , Bo Li , Haozhou Ma , Rui Xia , Xuewen Wang , Weixiu Cui , Peng Zhang , Hongzhang Jiao","doi":"10.1016/j.powtec.2025.121042","DOIUrl":"10.1016/j.powtec.2025.121042","url":null,"abstract":"<div><div>Conducting realistic wear tests on the middle plates of scraper conveyors is challenging.</div><div>This paper uses middle plate wear as an example to introduce a versatile abrasive wear test device. The device considers frictional relationships and motion forms between mechanical structures to replicate actual conditions and allows for single-factor comparative analysis.</div><div>Using this test device, orthogonal testing was conducted to establish that the abrasive hardness are the principal determinants of wear. From the perspective of three-body wear, the rationality of rock pretreatment to reduce wear was verified. An optimal abrasive particle size was identified that minimizes wear, and two novel methods were proposed to reduce the wear of the middle plate. A predictive model for middle plate wear was developed with limited test data, showing that <em>R</em><sup>2</sup> and <em>R</em><sup>2</sup><sub>adj</sub> are above 89 %. A tool was provided to facilitate the rapid development of materials with enhanced wear resistance.</div><div>This study provides tools and theoretical guidance for investigating wear mechanisms and enhancing material wear resistance.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"460 ","pages":"Article 121042"},"PeriodicalIF":4.5,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878889","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

Quantitative characterization of hydrophobic agglomeration at different mixing intensities using a copula-based probabilistic modeling approach 使用基于copula的概率建模方法定量表征不同混合强度下的疏水团聚

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-17 DOI: 10.1016/j.powtec.2025.120907

Niklas Eiermann , Orkun Furat , Jan Nicklas , Urs A. Peuker , Volker Schmidt

{"title":"Quantitative characterization of hydrophobic agglomeration at different mixing intensities using a copula-based probabilistic modeling approach","authors":"Niklas Eiermann , Orkun Furat , Jan Nicklas , Urs A. Peuker , Volker Schmidt","doi":"10.1016/j.powtec.2025.120907","DOIUrl":"10.1016/j.powtec.2025.120907","url":null,"abstract":"<div><div>The agglomeration of small poorly wetted alumina particles in a stirred tank is investigated. For different experimental conditions, two bivariate probability densities for the area-equivalent diameter and aspect ratio of primary particles and agglomerates, respectively, are determined, using 2D image data from an inline camera system. Throughout each experiment, these densities do not change since the geometries of primary particles are unaffected by the experimental conditions, while large agglomerates fragment into multiple smaller ones, which results in an equilibrium state regarding the distribution of agglomerate descriptors. Mixtures of these densities are used to model the contents of the stirred tank at each time step of the experiments. Analytical functions, whose parameters characterize the agglomeration dynamics, are fitted to the time-dependent weights of these mixtures. This enables a quantitative comparison of agglomeration processes, highlighting the impact of mixing intensity on the joint distribution of agglomerate descriptors.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"460 ","pages":"Article 120907"},"PeriodicalIF":4.5,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863542","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

Performance enhancement of cyclone deoiling for oily sludge based on BP neural network model and genetic algorithm 基于BP神经网络模型和遗传算法的油泥旋风除油性能提升

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-17 DOI: 10.1016/j.powtec.2025.121029

Shifan Zhang , Jiwei Wu , Bin Gong , Shiqi Yu , Zelin Qiao , Qianyu Liu , Zhihao Su , Jianqiang Sun , Xuehai Wang , Haocheng Sun

{"title":"Performance enhancement of cyclone deoiling for oily sludge based on BP neural network model and genetic algorithm","authors":"Shifan Zhang , Jiwei Wu , Bin Gong , Shiqi Yu , Zelin Qiao , Qianyu Liu , Zhihao Su , Jianqiang Sun , Xuehai Wang , Haocheng Sun","doi":"10.1016/j.powtec.2025.121029","DOIUrl":"10.1016/j.powtec.2025.121029","url":null,"abstract":"<div><div>Performance enhancement in cyclone deoiling systems plays a critical role in improving oily sludge treatment efficiency and cutting energy consumption. This paper delved into the mechanism of cyclone deoiling, constructed Back Propagation (BP) neural networks to analyze the predictive performance of average shear rate and pressure drop, and achieved collaborative optimization of the cyclone structure by using the Nondominated Sorting Genetic Algorithm II (NSGA-II), aiming to balance deoiling efficiency and energy consumption. Through a combination of Computational Fluid Dynamics (CFD) simulations and experimental validation, the study systematically revealed the changes in particle dynamics and properties of oil-based mud (OBM) cuttings before and after optimization. The results demonstrated that the BP model outperformed the response surface model, Support Vector Machine (SVM), and Random Forest (RF) methods in predicting the average shear rate and pressure drop. The optimal cyclone structure corresponded to an average shear rate of 3111.23 s<sup>−1</sup> (an increase of 24.62 %) and a pressure drop of 992.54 Pa (an increase of 5.64 %), with prediction errors reduced to 0.80 % and 0.56 %, respectively. CFD simulations showed that the radial coupling centrifugal separation factor increased to 3.49 times that before optimization, and the pressure drop increased by 5.05 %. In the experiment, at an inlet velocity of 19 m/s, the oil content dropped to 0.49 %, the deoiling efficiency increased to 95.07 %, and the pressure drop increased by only 66.67 Pa, which was highly consistent with the predicted and simulated results. This study's intelligent optimization method provides an efficient, low-energy solution for oily sludge treatment, supporting sustainable oilfield development.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"460 ","pages":"Article 121029"},"PeriodicalIF":4.5,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878891","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

Dispersion and secondary explosion model of propylene oxide droplets/aluminum powder under explosion driving: Considering the initial flow field 爆炸驱动下环氧丙烷液滴/铝粉的分散及二次爆炸模型：考虑初始流场

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-16 DOI: 10.1016/j.powtec.2025.121045

Linghui Zeng , Jiafan Ren , Zhongqi Wang , Han Li , Xing Chen , Shenghua Fu

{"title":"Dispersion and secondary explosion model of propylene oxide droplets/aluminum powder under explosion driving: Considering the initial flow field","authors":"Linghui Zeng , Jiafan Ren , Zhongqi Wang , Han Li , Xing Chen , Shenghua Fu","doi":"10.1016/j.powtec.2025.121045","DOIUrl":"10.1016/j.powtec.2025.121045","url":null,"abstract":"<div><div>The dispersion and explosion characteristics of multiphase particles under explosion-driving hold significant importance for safety design and accident prevention in the chemical industry field. In order to solve the problems of discontinuity, incompleteness of flow field conditions and significant near-field errors in the existing numerical models, a dispersion and secondary explosion model of propylene oxide droplets/ aluminum powder under explosion driving is built. The model performs continuous computations for the four stages of initial dispersion, cloud development, concentration distribution, and secondary explosion. The model considers the initial flow field conditions, effectively reducing the near-field computational error to within 10 %. The dispersion and explosion processes of mixed fuel under three conditions (static, with wind speed and with falling speed) are studied through experiments and numerical models. The results show that under the initial wind speed, the dispersion radius of the downwind area extends by 16.8 %. The burnout rate increases by 15.0 %, and the peak overpressure of the secondary explosion rises by 4.2 %. Under the initial falling speed effect, the concentration distribution of the fuel cloud becomes more uniform. The proportion of the gas phase increases. It has been verified that the velocity change of the initial flow field can influence the stripping and evaporation effects of droplets, thereby strengthening the explosive properties of the cloud.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"459 ","pages":"Article 121045"},"PeriodicalIF":4.5,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848648","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

Pore network modeling of iron ore agglomerates: Development of a methodology based on X-ray microtomography 铁矿团块孔隙网络建模：基于x射线微层析成像方法的发展

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-04-16 DOI: 10.1016/j.powtec.2025.121046

Igor Nogueira Lima , Karen Soares Augusto , Marcos Henrique de Pinho Mauricio , Francisco José Rodrigues da Silva Junior , Richard Bryan Magalhães Santos , Bernardo Amaral Pascarelli Ferreira , Alei Leite Alcantara Domingues , Valdirene Gonzaga de Resende , Sidnei Paciornik

{"title":"Pore network modeling of iron ore agglomerates: Development of a methodology based on X-ray microtomography","authors":"Igor Nogueira Lima , Karen Soares Augusto , Marcos Henrique de Pinho Mauricio , Francisco José Rodrigues da Silva Junior , Richard Bryan Magalhães Santos , Bernardo Amaral Pascarelli Ferreira , Alei Leite Alcantara Domingues , Valdirene Gonzaga de Resende , Sidnei Paciornik","doi":"10.1016/j.powtec.2025.121046","DOIUrl":"10.1016/j.powtec.2025.121046","url":null,"abstract":"<div><div>One of the most relevant characteristics of iron ore agglomerates is their porosity, which strongly impacts their performance in the steelmaking processes. This performance depends on a porous network allowing the gas to flow through its interior without compromising its integrity. However, there is a noticeable lack of research on the relationship between flow properties, absolute permeability, and the porous structure of agglomerates, especially for cold agglomerated iron ore. This work presents a methodology for characterizing iron ore agglomerates by identifying their pore network structure using X-ray microtomography (MicroCT) and Pore Network Modeling (PNM). The methodology was applied to iron ore pellets and cold agglomerates. Thus, the influence of the microstructure of these agglomerates on the variation of their porosity and permeability was evaluated. MicroCT provided a 3D visualization of the agglomerates' microstructure, allowing the pore space's discrimination. PNM was used to simulate the absolute permeability of the samples, correlating it with porosity, pore connectivity, and pore diameters and connections. The images were acquired with a 2 μm voxel size, and the obtained porosity was around 20 %. In addition, consistent results of the agglomerates' absolute permeability were found, ranging from 0.03 to 2.4 mD. From the developed methodology, it is possible to explore the relationship between porosity, permeability, and reducibility of agglomerates. Future research can use this approach to optimize process parameters and improve the efficiency of steel production by deepening the understanding of the influence of microstructure on the physical properties and performance of the reduction process.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"460 ","pages":"Article 121046"},"PeriodicalIF":4.5,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855815","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