Browse > Article
http://dx.doi.org/10.3740/MRSK.2011.21.12.679

Leaching Properties of Water-Soluble Hexavalent Chromium by Manufacturing Condition of Cement Clinker  

Lee, Jong-Kyu (Green Ceramics Division, Korea Institute of Ceramic Eng. & Tech.)
Chu, Yong-Sik (Green Ceramics Division, Korea Institute of Ceramic Eng. & Tech.)
Song, Hun (Green Ceramics Division, Korea Institute of Ceramic Eng. & Tech.)
Publication Information
Korean Journal of Materials Research / v.21, no.12, 2011 , pp. 679-684 More about this Journal
Abstract
One of the trace constituents included in cement clinker, chromium, has become prominent and highly noticed lately as a social issue both inside and outside of this country because it affects the human body negatively. The purpose of the present study was to investigate leaching properties of water-soluble hexavalent chromium by different manufacturing conditions of cement clinker. Raw materials were prepared to add different $SiO_2$, $Al_2O_3$ and $Fe_2O_3$ sources. After the raw materials, such as limestone, sand and clay, iron ore was pulverized and mixed, and the raw meal was burnt at $1450^{\circ}C$ in a furnace with an oxidizing atmosphere. Leaching of soluble hexavalent chromium showed a tendency to decrease with an increasing LSF and IM. However, leaching of soluble hexavalent chromium increased with an increasing S.M. Alkali contents of iron source minerals is closely related to the leaching properties of soluble hexavalent chromium. Green sludge has the highest content of alkali added; leaching of water-soluble hexavalent chromium was mostly high. In order to reduce the water-soluble hexavalent chromium in cement, reducing the alkali content in raw materials is important.
Keywords
cement; modulus; chromium; hexavalent chromium; alkali;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
연도 인용수 순위
1 G. -C. Yum, S. -K. Lee and J. -S. Rho, J. Kor. Inst. Resources Recycling, 6(4), 17 (1997) (in Korean).
2 S. -S. Hong, T. -H. Lee, G. -G. Lim, H. -K. Oh and B. -H. Lee, J. Korean Ind. Eng. Chem., 10(5), 696 (1999) (in Korean).
3 K. Svinning and K. A. Datu, in Proceedings of the 11th International Congress on the Chemistry of Cement (Durban, South Africa, May 2003) Vol. 2, p. 1080.
4 S. Wang and C. Vipulanandan, Cement Concr. Res., 30, 385 (2000).   DOI   ScienceOn
5 J. O Eckert Jr., Q. Guo, J. Hazard. Mater., 59, 55 (1998).   DOI   ScienceOn
6 S. S Potgieter, N. Panichev, J. H. Potgieter, S. Panicheva, Cement Concr. Res., 33, 1589 (2003).   DOI   ScienceOn
7 J. -H. Lee, Y. -S. Chu, H. Song and J. -K. Lee, Kor. J. Mater. Res., 20(4), 181 (2010) (in Korean).   DOI   ScienceOn
8 D. Stephan, R. Mallmann, D. Knofel and R. Hardtl, Cement Concr. Res., 29, 1949 (1999).   DOI   ScienceOn
9 D Stephan, H Maleki, D Knofel, B Eber and R Hardtl, Cement Concr. Res., 29, 545 (1999).   DOI   ScienceOn
10 S. Sinyoung, P. Songsiriritthigul, S. Asavapisit and P. Kajitvichyanukul, J. Hazard. Mater., 191, 296 (2011).   DOI   ScienceOn
11 R. Roskovic, I. S. Oslakovic, J. Radic and M. Serdar, Cement Concr. Compos., 33, 1020 (2011).   DOI   ScienceOn
12 S. Hanehara and O. Yamaguich, World Cement, March, 23 (2006).
13 K.Kolovos, S. Tsivilis and G. Kakali, Cement Concr. Compos., 27, 163 (2005).   DOI   ScienceOn
14 N. Jain and M. Garg, Construct. Build. Mater., 22, 1851 (2008).   DOI   ScienceOn
15 S. H. Lee, in Proceedings of the Korean Ceramic Society; Cement Symposium (Sorak, Korea, July 2005) p. 5 (in Korean).
16 R. Roskovic, I. S. Oslakovic, J. Radic and M. Serdar, Cement Concr. Compos., 33, 1020 (2011).   DOI   ScienceOn