| Title |
Characteristics of Redmud Ceramics by Sintering Temperature and Raw Materials of Clay Bricks |
| Authors |
Kang, Suk-Pyo ; Kang, Hye-Ju |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.10.199 |
| Keywords |
Redmud; Sintering; Ceramic; Clay brick; Compressive strength |
| Abstract |
This study aims to recycle redmud which is a byproduct in the alumina industry. Redmud ceramics were prepared according to the type of
raw materials by blending redmud with the raw materials used in the conventional clay bricks. In this paper, the compressive strength, water
absorption ratio, and shrinkage of redmud ceramics prepared by mixing clay bricks were evaluated. Compressive strength and absorption ratio
of redmud ceramics were compared with the clay brick criteria of KS L 4201. At the firing temperature of 1200 ℃, the specimens
containing redmud only and the redmud with sandy loam and black clay were found to satisfy the 1st class of clay brick. The quality
standard of compressive strength and absorption ratio was obtained by firing redmud with black clay and sandy loam at 1200 ℃. Also, when
the redmud was mixed with black clay and feldspar, the 2nd class was satisfied when the sample was fired at 1100 ℃. |