KONA Powder and Particle Journal最新文献_第3页

Review and Further Validation of a Practical Single-particle Breakage Model 一个实用的单颗粒断裂模型的回顾与进一步验证

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/KONA.2022012

L. M. Tavares

引用次数: 11

The 8th APT (Asian Particle Technology Symposium) 2021 Held in Osaka 2021第八届亚洲粒子技术研讨会在大阪举行

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/kona.2022023

引用次数: 0

The KONA Award 2020 2020年KONA奖

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/kona.2022024

引用次数: 0

Correlating Granule Surface Structure Morphology and Process Conditions in Fluidized Bed Layering Spray Granulation 流化床分层喷雾造粒过程中颗粒表面结构形态与工艺条件的关系

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/kona.2022016

Maik Orth, P. Kieckhefen, Swantje Pietsch, S. Heinrich

引用次数: 5

Grain-size Effects on Mechanical Behavior and Failure of Dense Cohesive Granular Materials 晶粒尺寸对致密粘性颗粒材料力学行为和破坏的影响

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/kona.2022001

P. Poorsolhjouy, A. Misra

{"title":"Grain-size Effects on Mechanical Behavior and Failure of Dense Cohesive Granular Materials","authors":"P. Poorsolhjouy, A. Misra","doi":"10.14356/kona.2022001","DOIUrl":"https://doi.org/10.14356/kona.2022001","url":null,"abstract":"The grain sizes can significantly influence the granular mechano-morphology, and consequently, the macro-scale mechanical response. From a purely geometric viewpoint, changing grain size will affect the volumetric number density of grain-pair interactions as well as the neighborhood geometry. In addition, changing grain size can influence initial stiffness and damage behavior of grain-pair interactions. The granular micromechanics approach (GMA), which provides a paradigm for bridging the grain-scale to continuum models, has the capability of describing the grain size influence in terms of both geometric effects and grain-pair deformation/dissipation effects. Here the GMA based Cauchy-type continuum model is enhanced using simple power laws to simulate the effect of grain size upon the volumetric number density of grain-pair interactions, and the parameters governing grain-pair deformation and dissipation mechanisms. The enhanced model is applied to predict the macroscopic response of cohesive granular solids under conventional triaxial tests. The results show that decreasing grain-sizes can trigger brittle-to-ductile transition in failure. Grain size is found to affect the compression/dilatation behavior as well as the post-peak softening/hardening of granular materials. The macro-scale failure/yield stress is also found to have an inverse relationship with grain-sizes in consonance with what has been reported in the literature.","PeriodicalId":17828,"journal":{"name":"KONA Powder and Particle Journal","volume":"8 1","pages":"2022001"},"PeriodicalIF":4.1,"publicationDate":"2022-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89939753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Verification of Polyhedral DEM with Laboratory Grinding Mill Experiments 多面体DEM的室内磨机实验验证

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/KONA.2022013

Alberto M. Puga, N. Govender, R. Rajamani

{"title":"Verification of Polyhedral DEM with Laboratory Grinding Mill Experiments","authors":"Alberto M. Puga, N. Govender, R. Rajamani","doi":"10.14356/KONA.2022013","DOIUrl":"https://doi.org/10.14356/KONA.2022013","url":null,"abstract":"The simulation of grinding mills with the discrete element method (DEM) has been advancing. First, it emerged as a method for studying charge motion with spherical balls and predicting the power draw of the mill. Subsequently, studies on liner wear, charge motion with ellipsoidal and polyhedral shaped particles simulated with three dimensional DEM followed. Further, the impact energy spectra computed in the DEM algorithm is leading to the development of models for the breakage of brittle particles in mills. The core elements in such simulations are the shape of particles in the mill charge and the power draw of the mill due to operating variables. To advance the field, we present a set of experimental data and the corresponding DEM validation results for a 90 × 13 cm mill. The DEM algorithm uses the volume-overlap method which is more realistic for multifaceted irregular particle collisions. Further, we use the scanned shape of the rock media and multifaceted spherical shape for the grinding media to represent as close as possible the actual charge in the mill. First, we present DEM validation for spherical grinding media-only experiments, rock-only experiments, and a mixture of spherical grinding media and rocks, as well as aluminum cubes only to represent the theme of particle shape. Finally, a discussion of the contact mechanics parameters in the four modes of experiments is given. Since the feed ore to plant scale mills can vary in shape, mill simulations with scanned shape of typical particles are the future for more accurate results.","PeriodicalId":17828,"journal":{"name":"KONA Powder and Particle Journal","volume":"35 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2022-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81855839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Editor’s Preface 编者前言

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/kona.2022021

W. Tanthapanichakoon

引用次数: 0

Carbonation Kinetics of Fine CaO Particles in a Sound-Assisted Fluidized Bed for Thermochemical Energy Storage 声助流化床热化学储能中细小CaO颗粒的碳化动力学

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/KONA.2022007

F. Raganati, P. Ammendola

{"title":"Carbonation Kinetics of Fine CaO Particles in a Sound-Assisted Fluidized Bed for Thermochemical Energy Storage","authors":"F. Raganati, P. Ammendola","doi":"10.14356/KONA.2022007","DOIUrl":"https://doi.org/10.14356/KONA.2022007","url":null,"abstract":"The calcium-looping process, relying on the reversible calcination/carbonation of CaCO 3 , is one of the most promising solution to perform thermochemical energy storage (TCES) for concentrating solar power (CSP) plants. Indeed, CaO precursors such as limestone can rely on the high energy density, low cost, large availability and nontoxicity. In this work, the study of the sound-assisted carbonation of fine CaO particles (< 50 μm) for TCES-CSP has been furthered. In particular, a kinetic study has been performed to analyse the effect of the particular carbonation conditions to be used in TCES-CSP applications, i.e. involving carbonation under high CO 2 partial pressure and at high temperature. All the experimental tests have been performed in a lab-scale sound-assisted fluidized bed reactor applying high intensity acoustic field with proper frequency (150 dB–120 Hz). The carbonation kinetics has been analysed by applying a simple kinetic model, able to properly describe the fast (under kinetic control) and slow (under diffusion control) stage of the of the reaction. In particular, the reaction rate, the intrinsic carbonation kinetic constant and the characteristic product layer thickness have been evaluated, also highlighting their dependence on the temperature between 800 and 845 °C; a value of 49 kJ mol –1 has been obtained for the activation energy. Finally, a good agreement between the conversion-time profiles, evaluated from the applied kinetic models, and the experimental data has been obtained.","PeriodicalId":17828,"journal":{"name":"KONA Powder and Particle Journal","volume":"26 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2022-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84805471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Continuous Synthesis of Precision Gold Nanoparticles Using a Flow Reactor 用流动反应器连续合成精密金纳米颗粒

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/KONA.2022011

Jiaqi Dong, J. Lau, S. Svoronos, B. Moudgil

引用次数: 3

High Performance Nickel Based Electrodes in State-of-the-Art Lithium-ion Batteries: Morphological Perspectives 高性能镍基电极在最先进的锂离子电池:形态学的观点

IF 4.1 4区材料科学

KONA Powder and Particle Journal Pub Date : 2022-01-10 DOI: 10.14356/kona.2022015

A. Purwanto, S. S. Nisa, I. P. Lestari, M. Ikhsanudin, C. Yudha, H. Widiyandari

引用次数: 4