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Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories

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2022
bitstream_1077.pdf (3.506Mb)
Authors
Vasić, Milica
Radovanović, Lidija
Pezo, Lato
Radojević, Zagorka
Article (Published version)
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Abstract
The usage possibility of 19 composites of raw refractory clays from Serbia containing approximately 53.29% of SiO2 and 26.73% of Al2O3 is presented. The sum of fluxing oxides was 57.74%, while these materials contained 32% of quartz, 29% of kaolinite and 26% of illite–mica. Dilatometry tests revealed a sudden shrinkage with the peak at approximately 1115 °C, owing to the formation of mullite. The refractoriness was in the range of 1581–1718 °C, which classifies the composites from low- to high-duty refractories. Based on correlation analysis, the refractoriness mostly depended on the content of alumina. The lightness of the fired test pieces was lower after firing when compared to the dry samples, and it decreased with the firing temperature from reddish to grayish. The study presents a novel attempt to define all the necessary properties of raw refractory clays and products fired at the 1100–1300 °C range on a laboratory level. Most of these clays can be used as natural refractory mat...erials for ceramic and glass furnace lining. The organic matter in some of the samples influences negatively the fast-firing process.

Keywords:
Raw kaolinitic / illitic clays / Refractories / Water absorption / Sintering range / L*a*b* color space
Source:
Journal of Thermal Analysis and Calorimetry, 2022, 147
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200012 (Istitute of Material Testing of Serbia - IMS, Belgrade) (RS-200012)

DOI: 10.1007/s10973-022-11848-w

[ Google Scholar ]
URI
http://rims.institutims.rs/handle/123456789/446
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Institut za ispitivanje materijala
TY  - JOUR
AU  - Vasić, Milica
AU  - Radovanović, Lidija
AU  - Pezo, Lato
AU  - Radojević, Zagorka
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/446
AB  - The usage possibility of 19 composites of raw refractory clays from Serbia containing approximately 53.29% of SiO2 and 26.73% of Al2O3 is presented. The sum of fluxing oxides was 57.74%, while these materials contained 32% of quartz, 29% of kaolinite and 26% of illite–mica. Dilatometry tests revealed a sudden shrinkage with the peak at approximately 1115 °C, owing to the formation of mullite. The refractoriness was in the range of 1581–1718 °C, which classifies the composites from low- to high-duty refractories. Based on correlation analysis, the refractoriness mostly depended on the content of alumina. The lightness of the fired test pieces was lower after firing when compared to the dry samples, and it decreased with the firing temperature from reddish to grayish. The study presents a novel attempt to define all the necessary properties of raw refractory clays and products fired at the 1100–1300 °C range on a laboratory level. Most of these clays can be used as natural refractory materials for ceramic and glass furnace lining. The organic matter in some of the samples influences negatively the fast-firing process.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories
VL  - 147
DO  - 10.1007/s10973-022-11848-w
ER  - 
@article{
author = "Vasić, Milica and Radovanović, Lidija and Pezo, Lato and Radojević, Zagorka",
year = "2022",
abstract = "The usage possibility of 19 composites of raw refractory clays from Serbia containing approximately 53.29% of SiO2 and 26.73% of Al2O3 is presented. The sum of fluxing oxides was 57.74%, while these materials contained 32% of quartz, 29% of kaolinite and 26% of illite–mica. Dilatometry tests revealed a sudden shrinkage with the peak at approximately 1115 °C, owing to the formation of mullite. The refractoriness was in the range of 1581–1718 °C, which classifies the composites from low- to high-duty refractories. Based on correlation analysis, the refractoriness mostly depended on the content of alumina. The lightness of the fired test pieces was lower after firing when compared to the dry samples, and it decreased with the firing temperature from reddish to grayish. The study presents a novel attempt to define all the necessary properties of raw refractory clays and products fired at the 1100–1300 °C range on a laboratory level. Most of these clays can be used as natural refractory materials for ceramic and glass furnace lining. The organic matter in some of the samples influences negatively the fast-firing process.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories",
volume = "147",
doi = "10.1007/s10973-022-11848-w"
}
Vasić, M., Radovanović, L., Pezo, L.,& Radojević, Z.. (2022). Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories. in Journal of Thermal Analysis and Calorimetry, 147.
https://doi.org/10.1007/s10973-022-11848-w
Vasić M, Radovanović L, Pezo L, Radojević Z. Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories. in Journal of Thermal Analysis and Calorimetry. 2022;147.
doi:10.1007/s10973-022-11848-w .
Vasić, Milica, Radovanović, Lidija, Pezo, Lato, Radojević, Zagorka, "Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories" in Journal of Thermal Analysis and Calorimetry, 147 (2022),
https://doi.org/10.1007/s10973-022-11848-w . .

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