Granulation of Natural Zeolite Powder Using Portland Cement
2007
Kim, S.J. (Kangwon National University, Chuncheon, Republic of Korea) | Zhang, Y.S. (National Institute of Highland Agriculture, RDA, Pyeongchang, Republic of Korea) | Yang, J.E. (Kangwon National University, Chuncheon, Republic of Korea), E-mail: [email protected] | Ok, Y.S. (Kangwon National University, Chuncheon, Republic of Korea) | Oh, S.E. (Kangwon National University, Chuncheon, Republic of Korea)
Enormous amount of zeolite by-products as a fine powder have been produced while manufacturing commercial zeolite products. Granulation of the zeolite by-products is necessary in order for them to be recycled as soil conditioners or absorbent for various environmental contaminants due to the limitations inherent from their physical properties. We granulated the zeolite powders using Portland cement as a cementing agent and characterized the physical and chemical properties of the granulated zeolite product. The experimental natural zeolite had a Si/Al ratio of 4.8 and CEC of 68.1 cmol∧c kg-¹. The X-ray diffractometry (XRD) revealed that clinoptilolite and mordenite were the major minerals of natural zeolite. Smectite, feldspar and quartz also existed as secondary minerals.
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