<i>In-Situ</i> Observation on the Agglomeration and Dispersion of Particles at the Interface of High-temperature Melts

Understanding the mechanism of particle aggregation and dispersion at a liquid surface is important for design fabrication novel materials. The behaviors particles with various compositions interface high-temperature melts, including rapid growth particles, linear or curvilinear motion, wetting separation processes, were observed in situ by confocal laser scanning microscopy (HT-CLSM). We experimentally investigated interaction force on pairs as function interparticle distance size, composition shape particles. experimental results indicate attractive between decreases increasing distance, it increases size guest increases. acting length order alumina-magnesia (30 µm)< calcium aluminate low CaO contents (80 µm)<alumina (110 µm). estimated based observation Al2O3·35%CaO< Al2O3·19%MgO < Al2O3·38%MgO Al2O3·15%CaO Al2O3. complex selective attraction has been experiments which attributed to polydirectional anisotropy morphology. relationship roundness acceleration rate indicates that spherical tends be less than irregular edges.