Floc characteristics and sedimentation effected by particle size
LIU Yunxia
DONG Xianshu
FAN Yuping
MA Xiaomin
CHANG Ming
Abstract：Abstraet:In order to study the microscopic characteristics and sedimentation effect of different particle size of raw coal after adding flocculants,slime floes structure were observed by optical microscope,the area and perimeter were extracted by Image J software,and the floc size,fractal dimension,floc density and flocculation strength were valued.The settling velocity and the supematant transmittance were taken as macroscopic factors to compare the effect of different flocs.The results show that the maximum sedimentation velocity of coal particles with particle size of 0.250～0.125 mm is 78.40 cm / min and the maximum of supematant is 83.6％ under the condition of 200 g/t dry coal flocculant.The maximum floc strength is 280.01 x10-19 N,the minimum density of floc is 1 033.95 kg.m3,and the minimum value of ftoc fractal dimension is 1.361.
Keywords：floc sizefractal dimensionfloc densityfloc strengthsedimentation
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 59-63 )