Effect of Delamination on Physico-Chemical Properties of Kaolin

2021
Authors
Mihajlović, Slavica
Vlahović, Milica

Vušović, Nenad M.

Đorđević, Nataša

Jovanović, Marina N.
Article (Published version)
Metadata
Show full item recordAbstract
To provide the quality required for its use, raw kaolin must be subjected to certain processing procedures like delamination which is applied to the layered structure materials. The aim of this research is to determine the possibility of performing delamination in the extruder and to estimate the effects of this process on the physico-chemical properties of kaolin. The results showed that delamination can be efficiently realized in the extruder by shearing densely packed layers under the influence of friction force and added Na2CO3 electrolyte. The crystal structure of the system was thus disrupted. This was confirmed by the Hinckley index (HI) decrease and by the dilatometric characteristics changes during heating. The particle size was reduced and, furthermore, new adsorption centers were formed, which led to an increase in the total cation exchange capacity (CEC). The plasticity of kaolin decreased with the increasing delamination degree, as well as the amount of water required for ...plastic processing, which is favorable in drying ceramic products.
Keywords:
Plasticity / Kaolin / Hinckley index / Dilatometric properties / DelaminationSource:
Science of Sintering, 2021, 53, 2, 253-266Publisher:
- Međunarodni Institut za nauku o sinterovanju, Beograd
Funding / projects:
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200023 (Institute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade) (RS-200023)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200131 (University of Belgrade, Technical Faculty, Bor) (RS-200131)
DOI: 10.2298/SOS2102253M
ISSN: 0350-820X
WoS: 000691836600009
Scopus: 2-s2.0-85110477193
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Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Mihajlović, Slavica AU - Vlahović, Milica AU - Vušović, Nenad M. AU - Đorđević, Nataša AU - Jovanović, Marina N. PY - 2021 UR - https://ritnms.itnms.ac.rs/handle/123456789/565 AB - To provide the quality required for its use, raw kaolin must be subjected to certain processing procedures like delamination which is applied to the layered structure materials. The aim of this research is to determine the possibility of performing delamination in the extruder and to estimate the effects of this process on the physico-chemical properties of kaolin. The results showed that delamination can be efficiently realized in the extruder by shearing densely packed layers under the influence of friction force and added Na2CO3 electrolyte. The crystal structure of the system was thus disrupted. This was confirmed by the Hinckley index (HI) decrease and by the dilatometric characteristics changes during heating. The particle size was reduced and, furthermore, new adsorption centers were formed, which led to an increase in the total cation exchange capacity (CEC). The plasticity of kaolin decreased with the increasing delamination degree, as well as the amount of water required for plastic processing, which is favorable in drying ceramic products. PB - Međunarodni Institut za nauku o sinterovanju, Beograd T2 - Science of Sintering T1 - Effect of Delamination on Physico-Chemical Properties of Kaolin EP - 266 IS - 2 SP - 253 VL - 53 DO - 10.2298/SOS2102253M UR - conv_914 ER -
@article{ author = "Mihajlović, Slavica and Vlahović, Milica and Vušović, Nenad M. and Đorđević, Nataša and Jovanović, Marina N.", year = "2021", abstract = "To provide the quality required for its use, raw kaolin must be subjected to certain processing procedures like delamination which is applied to the layered structure materials. The aim of this research is to determine the possibility of performing delamination in the extruder and to estimate the effects of this process on the physico-chemical properties of kaolin. The results showed that delamination can be efficiently realized in the extruder by shearing densely packed layers under the influence of friction force and added Na2CO3 electrolyte. The crystal structure of the system was thus disrupted. This was confirmed by the Hinckley index (HI) decrease and by the dilatometric characteristics changes during heating. The particle size was reduced and, furthermore, new adsorption centers were formed, which led to an increase in the total cation exchange capacity (CEC). The plasticity of kaolin decreased with the increasing delamination degree, as well as the amount of water required for plastic processing, which is favorable in drying ceramic products.", publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd", journal = "Science of Sintering", title = "Effect of Delamination on Physico-Chemical Properties of Kaolin", pages = "266-253", number = "2", volume = "53", doi = "10.2298/SOS2102253M", url = "conv_914" }
Mihajlović, S., Vlahović, M., Vušović, N. M., Đorđević, N.,& Jovanović, M. N.. (2021). Effect of Delamination on Physico-Chemical Properties of Kaolin. in Science of Sintering Međunarodni Institut za nauku o sinterovanju, Beograd., 53(2), 253-266. https://doi.org/10.2298/SOS2102253M conv_914
Mihajlović S, Vlahović M, Vušović NM, Đorđević N, Jovanović MN. Effect of Delamination on Physico-Chemical Properties of Kaolin. in Science of Sintering. 2021;53(2):253-266. doi:10.2298/SOS2102253M conv_914 .
Mihajlović, Slavica, Vlahović, Milica, Vušović, Nenad M., Đorđević, Nataša, Jovanović, Marina N., "Effect of Delamination on Physico-Chemical Properties of Kaolin" in Science of Sintering, 53, no. 2 (2021):253-266, https://doi.org/10.2298/SOS2102253M ., conv_914 .