J. Korean Ceram. Soc. > Volume 51(5); 2014 > Article
 Journal of the Korean Ceramic Society 2014;51(5): 492. doi: https://doi.org/10.4191/kcers.2014.51.5.492
 The Fabrication of Artificial Fine Aggregates Using Stone Sludge and Spent Bleaching Clay Kangduk Kim Department of Advanced Materials Engineering, Kyonggi University ABSTRACT Artificial fine aggregates (denoted AFA) were fabricated using spent bleaching clay (denoted SBC) generated from processed vegetable oil and stone sludge (denoted SS) produced from crushed aggregate manufacturing materials for use as functional construction materials. Each raw material was crushed to particle size finer than $150{mu}m$, and fine spherical pellets of approximately 1 ~ 4 mm in diameter were prepared by a pelletizing process. The physical properties of the AFA were measured with different types of sintering equipment. A new type of vertical furnace that sinters fine aggregates in a fluidized bed at high temperatures was designed and tested. AFA sintered in a rotary kiln at $1125^{circ}C$ showed a bulk density of $1.5g/cm^3$ and a water absorption of 16%. AFA sintered in the vertical furnace at $1125^{circ}C$ showed a bulk density of $1.9g/cm^3$ and water absorption of 8.5%. The bulk density of the AFA sintered in the vertical furnace showed a bulk density 27% higher and water absorption 47% lower than those of AFA sintered in the rotary kiln. Key words: Artificial fine aggregate, Rotary kiln, Vertical furnace, Fluidized bed, Pelletizing
TOOLS
Full text via DOI
CrossRef TDM
E-Mail
Share:
METRICS
 1 Crossref
 1 Scopus
 1,084 View