Investigation on interaction behavior between coarse and fine particles in the coal flotation using focused beam reflectance measurement (FBRM) and particle video microscope (PVM)
Xuexia Wang, Shaoqi Zhou, Xiangning Bu, Chao Ni, Guangyuan Xie, Yaoli Peng
Abstract
In this study, interaction between coarse and fine coal particles during flotation was investigated with aid of FBRM and PVM, and explicated by the extended Derjaguin–Landau–Verwey–Overbeek (EDLVO).The flotation results showed that coarse coal particles could greatly improve the flotation of fine coal. Analyzing the results of FBRM and PVM revealed that the improvement in the flotation of fine particles was attributed to the fact that a portion of fine coal accumulated or adhered to coarse coal. This is because the total interaction between coarse and fine particles was attractive based on the theoretical calculation of EDLVO.
Topics & Concepts
CoalChemistryParticle (ecology)ReflectivityMineralogyVideo microscopyChemical engineeringOpticsGeologyPhysicsBiologyOceanographyCell biologyEngineeringOrganic chemistryMinerals Flotation and Separation TechniquesMineral Processing and GrindingMetallurgical Processes and Thermodynamics