Physical, Chemical and Electrical Analysis of Dust Generated from Cement Plants for Dust Removal with an Electrostatic Precipitator

Young-Chull Ahn; Jae-Min Cho; Gil-Tae Kim; Seung-Ryong Cha; Jae-Keun Lee; Young-Ok Park; Sang-Do Kim; Sang-Hoon Lee

Korean Journal of Chemical Engineering, Vol.21, No.1, 182-186, January, 2004

Young-Chull Ahn^†, Jae-Min Cho, Gil-Tae Kim, Seung-Ryong Cha, Jae-Keun Lee, Young-Ok Park¹, Sang-Do Kim¹, and Sang-Hoon Lee²

Department of Mechanical Engineering, Pusan National University, San 30, Jangjeon-Dong, Keumjeong-Ku, Busan 609-735, Korea
¹Clean Air Technology Research Center, Korea Institute of Energy Research, 71-2 Jang-Dong, Yusung-Ku, Daejeon 305-343, Korea
²Department of Project Management, Korea Institute of Environmental Science and Technology, 613-2, Bulgwang-Dong, Eunpyeong-Gu, Seoul 122-706, Korea

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The physical, chemical and electrical characteristics of cement dust generated from a cement plant have been investigated by using a dust analyzer and a high voltage conductivity cell based on JIS B 9915. Major constituents of raw material cement dust generated from the first grinding process are CaO (41.77%), SiO₂ (11.72%), Al₂O₃ (3.45%), and Fe₂O₃ (1.47%), while the cement clinker dust generated from the second grinding process consists of mainly CaO (48.09-65.50%), SiO₂ (14.02-21.56%), Al₂O₃ (2.86-3.76%), and Fe₂O₃ (1.77-2.66%). Size distribution of the raw material cement dust is bi-modal in shape and the mass median diameter (MMD) is 3.68 μm, whereas the cement clinker dust also displays bi-modal distribution and the MMD of the cement clinker dust is in the range of 7.89-58.78 μm. The resistivity of raw material cement dust is so high as 10¹⁴ ohm·cm at 300 ℃, that cement dust would not precipitate well by the electrostatic precipitator.

Keywords:Resistivity;Electrostatic Precipitator;Cement Dust;Size Distribution;Chemical Composition

[References]

Beachler SD, Jahnke JA, APTI Course 4/3 Control of Particulate Emissions Student Manual (1981)
Bickelhaupt RE, "A Technique for Predicting Fly Ash Resistivity," Interagency Energy/Environment R&D Program Report, U.S. EPA (1979)
Bickelhaupt RE, J. Air. Pollution Control Assoc., 27(2), 114 (1974)
Cho JM, Kim SC, Shin JH, Noh HS, Lee JK, "Characteristics of Fine Dusts Generated from Industrial Plants," The 3rd Conference on Aerosol and Particle Technology, 157 (2002)
Choi HK, Park SJ, Lim JH, Kim SD, Park HS, Park YO, Korean J. Chem. Eng., 19(2), 342 (2002)
Japanese Standards Association, "Measuring Methods for Dust Resistivity (with Parallel Electrodes) JIS B 9915," Japanese Industrial Standard (1989)
Ku JH, Lee JE, Lee JK, Trans. Korean Soc. Mech. Eng., 24(4), 526 (2000)
Lee JK, Hyun OC, Lee JE, KSME Int. J., 15(5), 630 (2001)
Masuda S, "Electrostatic Precipitation in Japanese Steel Industries," Symposium on the Transfer and Utilization of Particulate Control Technology: Volume II, 309 (1979)
Steelhammer JC, Nogash DR, Pollizzotti DM, "Laboratory Electrostatic Precipitator Studies Relating to the Steel Industry," Proceedings: Particulate Collection Problems Using ESP's in the Metallurgical Industry, 54 (1977)
Walker AB, "Operating Principles of Air Pollution Control Equipment," Research Cottrell, Inc., Somerville, N.J. (1968)
Yoa SJ, Cho YS, Choi YS, Baek JH, Korean J. Chem. Eng., 18(4), 539 (2001)

[Referenced By]

[Related Articles]

[1] Beachler SD, Jahnke JA, APTI Course 4/3 Control of Particulate Emissions Student Manual (1981)

[2] Bickelhaupt RE, "A Technique for Predicting Fly Ash Resistivity," Interagency Energy/Environment R&D Program Report, U.S. EPA (1979)

[3] Bickelhaupt RE, J. Air. Pollution Control Assoc., 27(2), 114 (1974)

[4] Cho JM, Kim SC, Shin JH, Noh HS, Lee JK, "Characteristics of Fine Dusts Generated from Industrial Plants," The 3rd Conference on Aerosol and Particle Technology, 157 (2002)

[5] Choi HK, Park SJ, Lim JH, Kim SD, Park HS, Park YO, Korean J. Chem. Eng., 19(2), 342 (2002)

[6] Japanese Standards Association, "Measuring Methods for Dust Resistivity (with Parallel Electrodes) JIS B 9915," Japanese Industrial Standard (1989)

[7] Ku JH, Lee JE, Lee JK, Trans. Korean Soc. Mech. Eng., 24(4), 526 (2000)

[8] Lee JK, Hyun OC, Lee JE, KSME Int. J., 15(5), 630 (2001)

[9] Masuda S, "Electrostatic Precipitation in Japanese Steel Industries," Symposium on the Transfer and Utilization of Particulate Control Technology: Volume II, 309 (1979)

[10] Steelhammer JC, Nogash DR, Pollizzotti DM, "Laboratory Electrostatic Precipitator Studies Relating to the Steel Industry," Proceedings: Particulate Collection Problems Using ESP's in the Metallurgical Industry, 54 (1977)

[11] Walker AB, "Operating Principles of Air Pollution Control Equipment," Research Cottrell, Inc., Somerville, N.J. (1968)

[12] Yoa SJ, Cho YS, Choi YS, Baek JH, Korean J. Chem. Eng., 18(4), 539 (2001)