Calcination of mega-crystalline calcite using microwave and electric furnaces

Dae Ju Hwang; Jae Yong Ryu; Jung Ho Park; Young Hwan Yu; Seung Kwan Lee; Kye Hong Cho; Choon Han; Jong Dae Lee

Journal of Industrial and Engineering Chemistry, Vol.18, No.6, 1956-1963, November, 2012

DOI10.1016/j.jiec.2012.05.011 Export Citation

Calcination of mega-crystalline calcite using microwave and electric furnaces

Dae Ju Hwang^{1, 2}, Jae Yong Ryu³, Jung Ho Park³, Young Hwan Yu¹, Seung Kwan Lee¹, Kye Hong Cho¹, Choon Han^{4, †}, and Jong Dae Lee²

¹Korea Institute of Limestone and Advanced Materials, 18-1, Udeok-gil, Maepo-up, Danyang-gun, Chungbuk 395-903, Republic of Korea
²Department of Chemical Engineering, Chungbuk National University, 361-763, 410-SungBong-Ro, HeungDuk-Gu, Cheongju, Chungbuk, Republic of Korea
³Ulimeng Co., Ltd., 373-809, 85-20, Chungbuk Provincial College Business Center 2 daehak-gil, Okcheon-eup, Okcheon-gun, Chungbuk, Republic of Korea
⁴Department of Chemical Engineering, Kwangwoon University, 447-1 Wolgyedong, Nowonku, 139-701 Seoul, Republic of Korea

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Mega-crystalline calcite (m-CC) breaks apart easily during calcination, and is converted to CaO with difficulty due to its thermal decomposing characteristics that necessitate large heat consumption. To overcome this problem, m-CC was calcined using either a microwave furnace or an electric furnace fo 15 min and 30 min at 950 ℃. Following 15 and 30 min calcinations of m-CC, almost all (96.6 wt%) and all (100%) of the calcite was calcined to CaO in the microwave furnace, compared to only 11.3 wt% and 11.0 wt% in the electric furnace, respectively. The excellent conversion rate in the microwave furnace was attributed to its internal heating method. Therefore, calcination of m-CC to CaO was optimized in the microwave furnace at 950 ℃ for 30 min. The results demonstrated the potential for the microwave furnace calcination of m-CC, previously known as a non-calcinable material, as a material source for CaO, Ca(OH)2 and CaCO3.

Keywords:Mega-crystalline calcite;TG/DTA;Calcinations;Microwave;Microwave furnace

[References]

Noh JH, Choi JH, Journal of Mineralogical Society of Korea (Mineral and Industry)., 15(1), 1 (2002)
Noh JH, Oh SJ, Kim KJ, Journal of Mineralogical Society of Korea (Mineral and Industry)., 17(4), 339 (2004)
Bes AM, Process simulation of limestone calcination in normal shaft kilns, PhD Thesis, Otto-von-Guericke University, Magdeburg, Germany (2006)
L'vov BV, Polzik LK, Ugolkov VL, Thermochim. Acta, 390(1-2), 5 (2002)
Escardino A, Garcia-Ten J, Feliu C, Journal of The European Ceramic Society., 28, 3011 (2008)
Wang Y, Thomson WJ, Thermochimica Acta., 225, 383 (1995)
Hedin R, Swedish Cement and Concrete Research Institute Bulletin., 23, 34 (1954)
Foster RS, M.I.T. Research report to the national lime association (1946)
Murry JA, Journal of the American Ceramic Society., 37(7), 323 (1954)
Linzell HK, Proceedings of American Institute of Chemical Engineering (1926)
Knibbs NVS, Benn E, London, 85 (1924)
Chatterjee A, Basak T, Ayappa KG, AIChE J., 44(10), 2302 (1998)
Kenkre VM, Skala L, Weiser MW, Journal of Materials Science., 26, 2483 (1991)
Clemens J, Saltiel C, Int. J. Heat Mass Transf., 39(8), 1665 (1996)
Schubring NW, Mich T, US patent, 4,541,729 (1985)
Kimrey HD, Jr., US patent, 4,963,709 (1990)
Bible DW, Lauf RJ, US patent, 5,321,222 (1994)
Tran HN, Mostaghimi J, US patent, 5,525,783 (1996)
Wroe FC, US patent, 6,172,346 (2001)
Marsh, John, WO patent, 099,315 (2007)
Rundel PF, WO patent, 025,055 (2008)
Kim BK, KR patent, 0,015,542 (2009)
Shin SD, KR patent, 0,645,948 (2006)
Panasonic Co., Ltd., KR patent, 0,102,181 (2010)
Brosnan KH, Messing GL, Agrawal DK, J. Am. Ceram. Soc., 86(8), 1307 (2003)
Sundaresan SG, Rao MV, Journal of Electronic Materials., 36(4), 331 (2007)
Zhao C, Vleugels J, Acta Materialia., 48, 3795 (2000)
Das S, Mukhopadhyay AK, Bulletin of Materials Science., 32(1), 1 (2009)

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[25] Brosnan KH, Messing GL, Agrawal DK, J. Am. Ceram. Soc., 86(8), 1307 (2003)

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