| Characteristics of lightweight diatomite‑based insulating firebricks |
Serkan Dal1
, Mucahit Sutcu2
, Mustafa Sabri Gok3, Osman Gencel4 |
1Department of Metallurgical and Materials Engineering, Nevsehir Haci Bektas Veli University, 50300 Nevşehir, Turkey
2Department of Materials Science and Engineering, Izmir Katip Celebi University, 35620 Izmir, Turkey
3Department of Mechanical Engineering, Bartin University, 74100 Bartın, Turkey
4Department of Civil Engineering, Bartin University, 74100 Bartın, Turkey |
|
|
|
Received: October 11, 2019; Revised: December 22, 2019 Accepted: December 23, 2019. Published online: February 29, 2020. |
|
|
|
| ABSTRACT |
|
This study covers the physical, thermal, mechanical, and microstructural properties of porous ceramic materials produced from mixtures containing refractory clay and diatomite in different proportions. The raw materials were characterized by chemical (X-ray fluorescence), thermal (thermogravimetry), morphological (scanning electron microscopy), and phase (X-ray diffraction) analysis techniques. The prepared samples were sintered at different firing temperatures between 900 and 1100 °C in an electrical furnace. The bulk densities, apparent porosities, linear dimensional shrinkages, compression strengths, thermal conductivities, and microstructural properties of the sintered samples were investigated. The porosity of the sample with 90% diatomite content increased to 55.4%, density decreased to 1.02 g/cm3, and thermal conductivity coefficient decreased to 0.32 W/mK. |
| Key words:
Diatomite · Sintering · Porosity · Thermal conductivity · Microstructure |
|
PDF Links 
Full text via DOI
Download Citation 
