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Başlık: Production of ultrapure bentonite clays through centrifugation techniques
Yazarlar: Boylu, Feridun
Ersever, Gafure
Çelik, Mehmet Sabri
Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.
0000-0002-2047-3169
Hojiyev, Rustam
Ulcay, Yusuf
36026524100
6601918936
Anahtar kelimeler: Chemistry
Engineering
Bentonite
Centrifuging
Decanter centrifuges
Falcon concentrator
Hydrocyclone
Response surface regression
Montmorillonite
Hydrocyclone
Centrifugation
Centrifuges
Clay minerals
Cyclone separators
Surface properties
Bentonite clay
Cation exchange capacities
Centrifugation technique
Centrifuging
Correlation coefficient
Cut size
Developed model
Falcon concentrators
G-values
Gravity separator
High response
Hydro-cyclone
Hydrocyclones
Residence time
Response surface
Response surface method
Running tests
Setpoints
Smectites
Solids content
Bentonite
Yayın Tarihi: 2012
Yayıncı: Taylor & Francis
Atıf: Boylu, F. vd. (2012). "Production of ultrapure bentonite clays through centrifugation techniques". Separation Science and Technology, 47(6), 842-849.
Özet: In this study, the production of ultrapure Na-bentonite by centrifuge based techniques for organo and nano composite bentonite industry was investigated. Various parameters including centrifuging time, solids content, and g force were studied to determine the set points (cut size) for theoretical CEC (cation exchange capacity) and recovery limits. The experimental results were modeled using Response Surface Method (RSM) with high responses (regression > 85% and correlation coefficients > 0.85). it is shown that the commercial centrifugation equipment operating with residence time of 10-15 seconds and g values lower than 300 g such as Multi Gravity separator (MGS), Hydrocyclones and Falcon/Knelson concentrators are not suitable for obtaining pure quality Na-bentonite, since the set point size (5-8 mu m) is higher than 2 mu m which is defined for bentonite of high smectite contents. The RSM models demonstrate that only the kind of separators such as decanter centrifuges with operational g forces higher than 600 may exhibit the closest set point to 2 lm and thus enable the achievement of an ultra pure quality bentonite product. These assumptions obtained from the developed model were confirmed by running tests on Falcon and Mozley hydrocyclone separators.
URI: https://doi.org/10.1080/01496395.2011.634475
https://www.tandfonline.com/doi/full/10.1080/01496395.2011.634475
http://hdl.handle.net/11452/23329
ISSN: 0149-6395
1520-5754
Koleksiyonlarda Görünür:Scopus
Web of Science

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