Universal Characteristics of the Structure, Properties and Dispersion Behavior of Fine-Particle Clusters

本文将对流体动力应力作用下颗粒材料团簇的结构、破碎和分散进行实验和理论研究。三种具有相似宏观分散行为的材料，炭黑，二氧化钛和二氧化硅团簇，将被考虑用于实验。将研究固体和载体流体的物理和化学特性，组成团簇的单个单元的界面特性，以及团簇组合的总体特性及其凝聚力，包括对流体渗入团簇、团簇间键和断裂、凝聚力、分散过程、流体流动速率的影响。小颗粒聚集体的分散在化学、矿物和食品工业的许多工业过程中是重要的。如果成功，该项目将提高对混合液固系统设计的理解。

ABSTRACT CTS-9402682 I. Manas-Zloczower An experimental and theoretical study on the structure, breakage and dispersion of clusters of particulate materials by hydrodynamics stresses will be undertaken. Three materials with similar macroscopic behavior in dispersion, carbon black, titanium dioxide, and silica clusters, will be considered for experiments. The physical and chemical characteristics of solids and carrier fluid, interfacial properties of individual units comprising the clusters, and overall properties of the clusters assemblies and their cohesivity will be investigated, including the effect on the fluid infiltration into the agglomerates, inter-aggregate bonds and breakage, cohesivity, dispersion processes, fluid flow rates of deformation. The dispersion of small particle aggregates is important in many industrial processes in chemical, minerals and food industries. If successful, the project will improve understanding for the design of mixing liquid-solids systems.