{"title":"用于多组分球形颗粒混合物密度预测的统一非主要方程模型","authors":"Jinshun Lei , Dewen Zeng , Zhongwei Zhao","doi":"10.1016/j.powtec.2024.119975","DOIUrl":null,"url":null,"abstract":"<div><p>The conventional packing models generally rely on the dominant particle component assumption, where the structure of the particle mixture is dictated by the dominant particle skeleton. However, this assumption is not effective when applied to particle mixtures with multiple significant components, leading to a noticeable discrepancy between model predictions and experimental results. In this study, we draw from solution thermodynamics to introduce two new concepts, “ideal specific volume” and “excess specific volume,” for modeling packing density. Based on this new approach, we derived an equation which is capable of accurately describing the nonlinear packing behavior of these mixtures, named the Unified Non-Dominant Equation Model (UNDEM). This model does not depend on the dominant particle component assumption and employs a unified continuous function to represent changes in packing density. The UNDEM requires no additional parameters and exhibits broad applicability, particularly showing high accuracy in predicting the packing densities of multi-component particle mixtures. Its reliability has been validated against experimental data, showing that the UNDEM is generally more accurate than existing models and can accurately describe most experimental results.</p></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":null,"pages":null},"PeriodicalIF":4.5000,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A unified non-dominant equation model for density prediction of multi-component spherical particle mixtures\",\"authors\":\"Jinshun Lei , Dewen Zeng , Zhongwei Zhao\",\"doi\":\"10.1016/j.powtec.2024.119975\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The conventional packing models generally rely on the dominant particle component assumption, where the structure of the particle mixture is dictated by the dominant particle skeleton. However, this assumption is not effective when applied to particle mixtures with multiple significant components, leading to a noticeable discrepancy between model predictions and experimental results. In this study, we draw from solution thermodynamics to introduce two new concepts, “ideal specific volume” and “excess specific volume,” for modeling packing density. Based on this new approach, we derived an equation which is capable of accurately describing the nonlinear packing behavior of these mixtures, named the Unified Non-Dominant Equation Model (UNDEM). This model does not depend on the dominant particle component assumption and employs a unified continuous function to represent changes in packing density. The UNDEM requires no additional parameters and exhibits broad applicability, particularly showing high accuracy in predicting the packing densities of multi-component particle mixtures. Its reliability has been validated against experimental data, showing that the UNDEM is generally more accurate than existing models and can accurately describe most experimental results.</p></div>\",\"PeriodicalId\":407,\"journal\":{\"name\":\"Powder Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.5000,\"publicationDate\":\"2024-06-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Powder Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0032591024006181\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0032591024006181","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
A unified non-dominant equation model for density prediction of multi-component spherical particle mixtures
The conventional packing models generally rely on the dominant particle component assumption, where the structure of the particle mixture is dictated by the dominant particle skeleton. However, this assumption is not effective when applied to particle mixtures with multiple significant components, leading to a noticeable discrepancy between model predictions and experimental results. In this study, we draw from solution thermodynamics to introduce two new concepts, “ideal specific volume” and “excess specific volume,” for modeling packing density. Based on this new approach, we derived an equation which is capable of accurately describing the nonlinear packing behavior of these mixtures, named the Unified Non-Dominant Equation Model (UNDEM). This model does not depend on the dominant particle component assumption and employs a unified continuous function to represent changes in packing density. The UNDEM requires no additional parameters and exhibits broad applicability, particularly showing high accuracy in predicting the packing densities of multi-component particle mixtures. Its reliability has been validated against experimental data, showing that the UNDEM is generally more accurate than existing models and can accurately describe most experimental results.
期刊介绍:
Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests:
Formation and synthesis of particles by precipitation and other methods.
Modification of particles by agglomeration, coating, comminution and attrition.
Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces).
Packing, failure, flow and permeability of assemblies of particles.
Particle-particle interactions and suspension rheology.
Handling and processing operations such as slurry flow, fluidization, pneumatic conveying.
Interactions between particles and their environment, including delivery of particulate products to the body.
Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters.
For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.