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Fabrication of Calcined Clay Granule Comprising Zeolite  

Kim, Byoung-Gon (Korea Institute of Geoscience and Mineral Resources (KIGAM), Minerals and Materials Processing Division)
Lee, Gye-Seung (Korea Institute of Geoscience and Mineral Resources (KIGAM), Minerals and Materials Processing Division)
Park, Chong-Lyuck (Korea Institute of Geoscience and Mineral Resources (KIGAM), Minerals and Materials Processing Division)
Jeon, Ho-Seok (Korea Institute of Geoscience and Mineral Resources (KIGAM), Minerals and Materials Processing Division)
Jeong, Soo-Bok (Korea Institute of Geoscience and Mineral Resources (KIGAM), Minerals and Materials Processing Division)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.41, no.4, 2008 , pp. 239-246 More about this Journal
Abstract
This research tried to find out the optimum fabrication method of calcined clay granules comprising zeolite. Kaolin clay and natural zeolite powder were used as raw materials of calcined clay, and silica stone powder was used for controlling the porosity of the granules. The granulation was performed with two kinds of granulators: a pan granulator and a high-shear mixer granulator. Various granules were fabricated by the mixing ratios and the rotation speeds of the granulators, and were heated from 400 to $700^{\circ}C$ at $100^{\circ}C$ interval. The crushing strength, pore size distribution, and CEC of the granules were measured. The evaluation method for the resistance of granules to human treading was created and the tests were conducted at dry and wet conditions. The resistance and crushing strength improved in proportion to the rotation speed of the granulator and the heating temperature, but the CEC decreased. The pellet made by the pan granulator did not have the strength against treading upon heating to below $700^{\circ}C$, but the pellet made by the high-shear mixer granulator endured the treading test upon heating to over $500^{\circ}C$
Keywords
Calcined clay; Granulation; Zeolite; Cation exchange capacity; Treading test;
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1 Choi, J., Hur, N.-H., Lee, D.-H. 1993. The study on the CEC increase and granulation of natural zeolite, 2. Effects of temperature and time on the recrystallization of natural zeolite, J. Korean Soc. Soil Sci. Fert.26(3):151-154.
2 Salman, A.D., Hounslow, M.J., Seille, J.P.K. 2007. Handbook of powder technology, vol. 11 Granulation, ELSEVIER, ISBN:978- 0-444-51871-2.
3 Jin, S.-W. 1995. Neutralization for acid soils and calcium carbonate, J. Korean Prof. Eng. Association, 28(4):33-40.
4 Knight, P.C., Johansen, A., Kristensen, H.G., Schaefer, T., Seville, J.P.K. 2000. An investigation of the effects on agglomeration of changing the speed of a mechanical mixer. Powder tech. 110: 204-209   DOI   ScienceOn
5 Jeong, G.-Y, Kim, S.-J. 1989. 7A phase in the Sancheong kaolin: 7 A-halloysite or kaolinite ?, J. Miner. Soc. Korea, 2(1):18-25.
6 Kim, S.-J., Jeong, G.-Y., Lee, S.-J., Kwon, S.-K. 1989. Mineralogy of kaolin from Hadong-Sancheong area, Korea, J. Miner. Soc. Korea, 2(1):11-17.
7 Seo, G.-Y. 2000. Sustainment and improvement method for soil resources, Soil and fertilizer, ISSN 1226-2935, 4:3-16.
8 Bartake, P.P., Singh, D. N. 2007. A generalized methodology for determination of crushing strength of granular materials, Geotech Geol. Eng. 25: 203-213.   DOI
9 Choi, J., Hur, N.-H. 1995. The study on the CEC increase and granulation of natural zeolite, 3. Effects of alkali treatment on the ammonium and potassium ion adsorption of natural zeolite, J. Korean Soc. Soil Sci. Fert.2(1):22-27.
10 Ramaker, J.S. 2001. Fundamentals of the high-shear pelletisation process. Ph.D. Thesis, Rijksuniversiteit Groningen, The Netherlands:2-3
11 Jeong, G.-Y, Kim, S.-J., Kim, Y. -H., Cho, H. -G. 1995. Kaolinite formation by weathering of biotite in Sancheong kaolin, J. Miner. Soc. Korea, 8(1):37-45.
12 Choi, J., Hur, N.-H. 1993. The study on the CEC increase and granulation of natural zeolite, 1 The effect of NaOH concentration and $Na_2O/Al_2O_3$ ratio, J. Korean Soc. Soil Sci. Fert.26(2): 67-71.
13 Kim, B.-G., Park, C.-L., Lee, G.-S., Jeon, H.-S. 2007. Preparation of PZSC pellets with triple layered structure for the use of growing media (I), KIGAM Bulletin, 12(1):20-34
14 Schaefer, T., Taagegaard, B. Thomsen, L.J., Kristensen, h.G. 1993. Melt pelletization in a high shear mixer. V. Effects of apparatus variables, Eur. J. Pharm. Sci. 1:133-141   DOI   ScienceOn