Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis
Abstract
The impact of the mechanical processing parameters on the alumina grain-size distribution affiliated characteristics and on the gamma to alpha phase transformation rate was investigated. The moderation in the alumina samples behavior has been correlated to the granulometric and mineralogical changes induced by activation via an ultra-centrifugal mill. The assessment of the activation process variables influence on the final quality of the product parameters was conveyed in order to optimize the mechanical treatment of the alumina, which otherwise could be regarded as either energetically or economically unsustainable procedure. The Response Surface Method, Standard Score Analysis and Principal Component Analysis were applied as means of the mechanical activation optimization. The r(2) values obtained by developed models were in range from 0.816 to 0.988. The established mathematical models were able to precisely predict the quality parameters in a broad range of processing parameters. ...The Standard Score Analysis emphasized that the optimal output sample was obtained using a sieve mesh of 120 mu m set of processing parameters (SS=0.96). Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of gamma-alumina samples immanent properties on the final score, and furthermore to enhance the rate of gamma to alpha transition which would improve energetic and economic sustainability of the alumina phase transformation procedure.
Keywords:
Thermal applications / Response Surface Analysis / Refractories / Milling / Grain size / Electron microscopy / Al2O3Source:
Ceramics International, 2015, 41, 9, 11908-11917Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Directed synthesis, structure and properties of multifunctional materials (RS-MESTD-Basic Research (BR or ON)-172057)
- Development and application of multifunctional materials using domestic raw materials in upgraded processing lines (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45008)
- Osmotic dehydration of food - energy and ecological aspects of sustainable production (RS-MESTD-Technological Development (TD or TR)-31055)
- Implementation of new technical, technological and environmental solutions in the mining and metallurgical operations RBB and RBM (RS-MESTD-Technological Development (TD or TR)-33007)
DOI: 10.1016/j.ceramint.2015.05.158
ISSN: 0272-8842
WoS: 000359165300042
Scopus: 2-s2.0-84930911382
Collections
Institution/Community
Institut za ispitivanje materijalaTY - JOUR AU - Terzić, Anja AU - Pezo, Lato AU - Andrić, Ljubiša AU - Mitić, Vojislav PY - 2015 UR - http://rims.institutims.rs/handle/123456789/271 AB - The impact of the mechanical processing parameters on the alumina grain-size distribution affiliated characteristics and on the gamma to alpha phase transformation rate was investigated. The moderation in the alumina samples behavior has been correlated to the granulometric and mineralogical changes induced by activation via an ultra-centrifugal mill. The assessment of the activation process variables influence on the final quality of the product parameters was conveyed in order to optimize the mechanical treatment of the alumina, which otherwise could be regarded as either energetically or economically unsustainable procedure. The Response Surface Method, Standard Score Analysis and Principal Component Analysis were applied as means of the mechanical activation optimization. The r(2) values obtained by developed models were in range from 0.816 to 0.988. The established mathematical models were able to precisely predict the quality parameters in a broad range of processing parameters. The Standard Score Analysis emphasized that the optimal output sample was obtained using a sieve mesh of 120 mu m set of processing parameters (SS=0.96). Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of gamma-alumina samples immanent properties on the final score, and furthermore to enhance the rate of gamma to alpha transition which would improve energetic and economic sustainability of the alumina phase transformation procedure. PB - Elsevier Sci Ltd, Oxford T2 - Ceramics International T1 - Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis EP - 11917 IS - 9 SP - 11908 VL - 41 DO - 10.1016/j.ceramint.2015.05.158 ER -
@article{ author = "Terzić, Anja and Pezo, Lato and Andrić, Ljubiša and Mitić, Vojislav", year = "2015", abstract = "The impact of the mechanical processing parameters on the alumina grain-size distribution affiliated characteristics and on the gamma to alpha phase transformation rate was investigated. The moderation in the alumina samples behavior has been correlated to the granulometric and mineralogical changes induced by activation via an ultra-centrifugal mill. The assessment of the activation process variables influence on the final quality of the product parameters was conveyed in order to optimize the mechanical treatment of the alumina, which otherwise could be regarded as either energetically or economically unsustainable procedure. The Response Surface Method, Standard Score Analysis and Principal Component Analysis were applied as means of the mechanical activation optimization. The r(2) values obtained by developed models were in range from 0.816 to 0.988. The established mathematical models were able to precisely predict the quality parameters in a broad range of processing parameters. The Standard Score Analysis emphasized that the optimal output sample was obtained using a sieve mesh of 120 mu m set of processing parameters (SS=0.96). Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of gamma-alumina samples immanent properties on the final score, and furthermore to enhance the rate of gamma to alpha transition which would improve energetic and economic sustainability of the alumina phase transformation procedure.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Ceramics International", title = "Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis", pages = "11917-11908", number = "9", volume = "41", doi = "10.1016/j.ceramint.2015.05.158" }
Terzić, A., Pezo, L., Andrić, L.,& Mitić, V.. (2015). Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis. in Ceramics International Elsevier Sci Ltd, Oxford., 41(9), 11908-11917. https://doi.org/10.1016/j.ceramint.2015.05.158
Terzić A, Pezo L, Andrić L, Mitić V. Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis. in Ceramics International. 2015;41(9):11908-11917. doi:10.1016/j.ceramint.2015.05.158 .
Terzić, Anja, Pezo, Lato, Andrić, Ljubiša, Mitić, Vojislav, "Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis" in Ceramics International, 41, no. 9 (2015):11908-11917, https://doi.org/10.1016/j.ceramint.2015.05.158 . .