期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2016
卷号：6
期号：10
页码：35-40
DOI：10.15587/1729-4061.2016.86085
语种：English
出版社：PC Technology Center
摘要：The influence of concentration and disperse composition on the process of flocculation of polydisperse coal slime is examined. It is established that the rate of deposition of the formed aggregates of floccules at constant consumption of flocculant is reduced with an increase in the concentration of solid phase in slime exceeding 30 g/dm3. This is explained by the fact that with an increase in the concentration of finely dispersed solid particles, the interphase surface increases, which leads to the non-uniform distribution of polymer at the surface of the particles and decreases the effectiveness of its adsorption. With an increase in the content of solid phase with coarseness exceeding 40 μm, the effectiveness of flocculation (settling velocity and strength of floccules) grows. We proposed a criterion of effectiveness of the process of formation of durable aggregates, which is the residual speed after mechanical action. This indicator characterizes the size of floccules and their strength. Dependences obtained in the course of experimental studies make it possible to intensify the process of forming durable floccules at the minimum consumption of flocculant, as well as to control the process of flocculation by regulating the concentration and disperse composition of polydisperse suspensions.
关键词：flocculation;polydisperse slimes;development of aggregation;strength of floccules;rate of deposition;intensification
