Browse > Article
http://dx.doi.org/10.5345/JKIBC.2017.17.6.517

Evaluation of Dispersion Characteristics for Liquefied Red Mud by Viscosity and Sediment Index  

Kang, Suk-Pyo (Department of Architecture, Woosuk University)
Kang, Hye-Ju (Department of Construction Engineering, Woosuk University)
Publication Information
Journal of the Korea Institute of Building Construction / v.17, no.6, 2017 , pp. 517-525 More about this Journal
Abstract
Red mud is an industrial by-product produced during the manufacturing aluminum hydroxide ($Al(OH)_3$) and aluminum oxide($Al_2O_3$) from Bauxite ores. In Korea, approximately 2 tons of red mud in a sludge form with 50% moisture content is produced when 1ton of $Al_2O_3$ is produced through the Bayer process. In the paper, dispersion characteristics of liquefied red mud that does not require heating and grinding process for recycling were investigated through viscosity and sediment index. The results showed that the sediment index of liquefied red mud increased but viscosity of that decreased with a higher W/R ratio. Also we proposed the range of initial viscosity from 2000cP to 8000cP and target sedimentation index below 20% at elapsed time 180days for stable dispersion of liquefied red mud.
Keywords
red-mud; viscosity; liquefied; sediment index; particle size distribution;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kim HS. A study of the space planning applying up-cycling resource circulation process [master's thesis]. [Seoul (Korea)]: Sungkyunkwan University; 2017. 121 p.
2 Daniel VR, Joao AL, Marcio RM. Potential use of natural red mud as pozzolan for portland cement. Materials Research. 2011 Jan;14(1):60-6.   DOI
3 Kang SP, Kwon SJ. Effects of red mud and alkali-activated slag cement on efflorescence in cement mortar. Construction and Building Materials. 2017 Feb;133:459-67.   DOI
4 Pan Z, Cheng L, Lu Y, Yang N. Hydration products of alkali-activated slag-red mud cementitious material. Cement and Concrete Research. 2002 Sep;32(3):357-62.   DOI
5 Kang SP, Kang HJ. Pore and efflorescence characteristics of alkali activated slag-red mud cement mortar depending on red mud. Journal of Korea Institute of Building Construction. 2017 Jan;17(3):261-8.   DOI
6 Chu YS, Park YA, Lee HJ. An Experimental study on flocculation and settling of fine-grained suspended sediments. Journal of the Korea Society of Oceanography. 1999 Feb;4(1):40-9.
7 Myeonggyu Sang, Analysis of sludge settling characteristics in sbr(sequencing batch reactor) process [master's thesis]. [Seoul (Korea)]: University of Seoul; 2008. 64 p.
8 Pontikes Y, Angelopoulos GN. Bauxite residue in cement and cementitious applications : Current status and a possible way forward, Resources. Conservation and Recycling. 2013 Apr;73(8):53-63.   DOI