ANALYSIS OF WAYS TO INTENSIFY FLOCCULATION OF FINELY DISPERSED SLIME
Abstract
The object of research is the process of the slime cleaning of the coal preparation plant from suspended solids by flocculation. The process of flocculation is multifactorial and depends on the concentration of the solid phase in the slime, the dispersed composition, the salinity, the pH of the medium, the concentration and degree of dilution of the flocculant and many other factors that have not been adequately studied in the current literature. Based on previous studies, it was suggested that the flocculant was introduced into the slime in two portions in an amount of 40 % and 60 % of the total flow. The aim of research is an experimental check of the influence of methods of dispersing and introducing the first portion of the flocculant onto the efficiency of sedimentation of the slime on the real slime. For this, in the diluted slime with water in a ratio of 1:1, the first portion of the flocculant is introduced in two ways: after diluting the slime with water and into the water before mixing it with the slime. It is established that the preliminary dispersion of the flocculant in a large volume of water leads to a significant increase (above 80-85 %) in the sedimentation rate of the formed floccules, as well as their strength to mechanical action
Downloads
References
Radovenchyk, Ya., Kostrytsia, A., Radovenchyk, V. (2013). Flocculants for natural water clarification. Eastern-European Journal of Enterprise Technologies, 4 (6 (64)), 23–26. Available at: http://journals.uran.ua/eejet/article/view/16696
Homelia, M., Radovenchyk, Ya., Tymoshenko, V., Koval, O. S. (2012). Sludge settling processes with use of different flocculants. Eastern-European Journal of Enterprise Technologies, 1 (6 (55)), 31–34. Available at: http://journals.uran.ua/eejet/article/view/3396
Sun, Y. Y., Xu, C. Y., Nie, R. C., Zheng, J. H. (2013). Application of Flocculant and Coagulant to Coal Slime Water. Advanced Materials Research, 781–784, 2170–2173. doi:10.4028/www.scientific.net/amr.781-784.2170
Sabah, E., Erkan, Z. E. (2006). Interaction mechanism of flocculants with coal waste slurry. Fuel, 85 (3), 350–359. doi: 10.1016/j.fuel.2005.06.005
Sun, W., Long, J., Xu, Z., Masliyah, J. H. (2008). Study of Al(OH)3−Polyacrylamide-Induced Pelleting Flocculation by Single Molecule Force Spectroscopy. Langmuir, 24 (24), 14015–14021. doi: 10.1021/la802537z
Veitser, Yu. Y., Mynts, D. M. (1984). Vysokomolekuliarnye flokulianty v protsessakh ochistki prirodnykh i stochnykh vod. Moscow: Stroiyzdat, 200.
Baran, A. A. (1986). Polymersoderzhashchye dyspersnye systemy. Kyiv: Naukova dumka, 204.
Ji, Y., Lu, Q., Liu, Q., Zeng, H. (2013). Effect of solution salinity on settling of mineral tailings by polymer flocculants. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 430, 29–38. doi: 10.1016/j.colsurfa.2013.04.006
Boylu, F., Ateşok, G., Dinçer, H. (2005). The effect of carboxymethyl cellulose (CMC) on the stability of coal-water slurries. Fuel, 84 (2–3), 315–319. doi:10.1016/j.fuel.2003.12.016
Golberg, G. Yu., Lavrinenko, A. A. (2015). Formation, existence and breakup of flocculation structures this work presents the results of investigation of the structures formed by flocculation of fine coal preparation products suspensions. Mining Informational and Analytical Bulletin, 11, 47–54.
Golberg, G. Yu. (2006). Fyzyko-khymycheskye problemу flokuliatsyy tonkodyspersnуkh produktov obohashchenyia uhlei. Mining Informational and Analytical Bulletin, 1, 346–348.
Shkop, A., Tseitlin, M., Shestopalov, O. (2016). Exploring the ways to intensify the dewatering process of polydisperse suspensions. Eastern-European Journal of Enterprise Technologies, 6 (10 (84)), 35–40. doi: 10.15587/1729-4061.2016.86085
Shkop, A., Tseitlin, M., Shestopalov, O., Raiko, V. (2017). A study of the flocculs strength of polydisperse coal suspensions to mechanical influences. EUREKA: Physics and Engineering, 1, 13–20. doi:10.21303/2461-4262.2017.00268
Shkop, A., Tseitlin, M., Shestopalov, O., Raiko, V. (2017). Study of the strength of flocculated structures of polydispersed coal suspensions. Eastern-European Journal of Enterprise Technologies, 1( 10 (85)), 20–26. doi: 10.15587/1729-4061.2017.91031
Shkop, A., Briankin, O., Shestopalov, O., Ponomareva, N. (2017). Investigation of flocculation efficiency in treatment of wet gas treatment slime of ferroalloys production. Technology Audit and Production Reserves, 5 (3 (37)), 29–39. doi:10.15587/2312-8372.2017.112792
Copyright (c) 2017 Oleksii Shestopalov, Nataliia Ponomarova
This work is licensed under a Creative Commons Attribution 4.0 International License.
Our journal abides by the Creative Commons CC BY copyright rights and permissions for open access journals.
Authors, who are published in this journal, agree to the following conditions:
1. The authors reserve the right to authorship of the work and pass the first publication right of this work to the journal under the terms of a Creative Commons CC BY, which allows others to freely distribute the published research with the obligatory reference to the authors of the original work and the first publication of the work in this journal.
2. The authors have the right to conclude separate supplement agreements that relate to non-exclusive work distribution in the form in which it has been published by the journal (for example, to upload the work to the online storage of the journal or publish it as part of a monograph), provided that the reference to the first publication of the work in this journal is included.
