Research on manufacturing high alumina porous ceramic sheets for kiln lining materials

Authors

  • Nguyen Thanh Dong School of Chemical Engineering, Hanoi University of Science and Technology, 01 Dai Co Viet, Hai Ba Trung, Ha Noi, Viet Nam
  • Mai Van Vo School of Chemical Engineering, Hanoi University of Science and Technology, 01 Dai Co Viet, Hai Ba Trung, Ha Noi, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/16324

Keywords:

porous ceramic, kiln lining, high alumina, high temperature, combustible additive

Abstract

High alumina porous  ceramic sheets with  Al2O3 content  ≥  95 wt.%  have many excellent thermal properties such as high thermal resistance, good insulation and low shrinkage. Thus, they arevery suited for a kiln working at high temperature. Using combustibleadditive to create porous structure for materials is a method which has a lot of benefits such as being simple and  easy  to  adjust  pore  content.  This  study  has  designed  a  raw  meal  of  92.5 wt.% alumina powder and 7.5 wt.% kaolin (A mixture), selected sawdust (B) as a combustible additive with a volume ratio ofA/B = 55/45. The sample after pre-sintering at 1300oC has a volumetricdensityof  1.22 g/cm3,  shrinkage  of 1.36 %,  andacertain  level  of sintering.  This  resultsin  a  certain mechanical  strength with cold compressive  strength of 10.05 MPa,  which  is  convenient  for transport  as  well  as  sawing,  cutting  and  assembling  into  the  kiln  lining.  After  the  secondary heating at 1650oC, itsshrinkage increased slightly by approximately 1 %, volumetric density is 1.29 g/cm3, porosity is 55.49 % and cold compressive strength is 10.58 MPa. Theresult shows that  it  is  feasible  to  fabricate  a  large  size of  high  aluminaporous  ceramic sheets for  high temperature kiln lining materials.

Downloads

Download data is not yet available.

References

Nguyen D. H. - Refractory product technology, Bach Khoa Hanoi publisher, 2006, (in Vietnamese).

Werr U. - Porous ceramics manufacture – Properties – Applications, Ceramic Applications 2 (2014) 48-53. https://rauschert.com/wp-content/uploads/2017/12/TK_ Werkstoffe_Por%C3% B6se-Keramik_ Por%C3%B6se_Keramik_CFI2014_EN.pdf.

Luyten J., Mullens S., Cooymans J., De Wilde A.M., Thijs I., and Kemps R. - Different methods to synthesize ceramic foams, J. Eur. Ceram. Soc. 29 (2009) 829-832. https://doi.org/10.1016/j.jeurceramsoc.2008.07.039. DOI: https://doi.org/10.1016/j.jeurceramsoc.2008.07.039

She J.H., and Ohji T. - Fabrication and characterization of highly porous mullite ceramics, Mater. Chem. Phys. 80 (2003) 610–614. https://doi.org/10.1016/S0254-0584(03)00080-4. DOI: https://doi.org/10.1016/S0254-0584(03)00080-4

Meng G., Wang H., Zheng W., and Liu X. - Preparation of porous ceramics by gelcasting approach, Materials Letters 45 (2000) 224-227.

https://doi.org/10.1016/S0167-577X(00)00109-9. DOI: https://doi.org/10.1016/S0167-577X(00)00109-9

Yang F. K., Li C. W., Lin Y. M., Wang C. A. - Effects of sintering temperature on properties of porous mullite/corundum ceramics, Materials Letters 73 (2012) 36-39. https://doi.org/10.1016/j.matlet.2011.12.087 DOI: https://doi.org/10.1016/j.matlet.2011.12.087

Zake-Tiluga I., Svinka R., and Svinka V. - Highly porous corundum - mullite ceramics - Structure and properties, Ceramics International 40 (2014) 3071-3077.

https://doi.org/10.1016/j.ceramint.2013.09.139. DOI: https://doi.org/10.1016/j.ceramint.2013.09.139

Deng Z. Y., Fukasawa T., and Ando M. - Microstructure and Mechanical Properties of Porous Alumina Ceramics Fabricated by the Decomposition of Aluminum Hydroxide, J. Am. Ceram. Soc. 84 (2001) 2638-2644. DOI: https://doi.org/10.1111/j.1151-2916.2001.tb01065.x

https://doi.org/10.1111/j.11512916.2001.tb01065.x.

Nguyen Q. D. - Research on manufacturing technology of high-aluminum and chamotte lightweight refractory bricks, Vietnam Institute for Building Science and Technology, 2006. (in Vietnamese).

TCVN 6530-3:2016 Refractory products - Test methods Part 3: Densen shaped refractory products – Determination of volumetric density, apparent porosity, water absorption and true porosity (in Vietnamese).

TCVN 7637:2007 Refractory materials - High alumina insulating bricks (in Vietnamese).

Huynh D. M. and Nguyen T. D. - Ceramic technology, Scientific and Technical publisher, 2009. (in Vietnamese).

Poluboiarinop D. N., Balkevich V. L, and Papinxki R. Ia. - Refractory and high-aluminum ceramic, Construction publisher, Ha Noi, 1993. (in Vietnamese).

Nguyen D. H. - Ceramics and refractory kiln; Cement clinker and lime kiln; Glass and frit furnace, Bach Khoa Hanoi publisher, 2014 (in Vietnamese).

Downloads

Published

2022-03-22

How to Cite

[1]
N. T. Dong and M. V. Vo, “Research on manufacturing high alumina porous ceramic sheets for kiln lining materials”, Vietnam J. Sci. Technol., vol. 59, no. 6A, pp. 176–184, Mar. 2022.

Issue

Section

International Symposium on Materials Science and Engineering - ISMSE