Modelling and Simulation of Air Classification in Cement Manufacturing

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In cement manufacturing, the finish grinding circuit consumes more energy from the raw grinding circuit. Thus, it is necessary for the system to have an efficient air classifier in order to reduce the energy consumption of the cement production. A mathematical model was developed for describing the air classification in the air classifier, in the finish grinding circuit. Samples were collected around the air classifier feed, product and reject. In the laboratory, particle size analysis was done to the samples. Modelling and simulation studies were carried out using JKSimMet software. In order to verify the validity of the model, extensive surveys were performed at different operating conditions. The product and reject of the air classifier for the extensive surveys were predicted by using simulation based on the model that has been developed. The observed and predicted data for particle size distribution agreed closely for the new conditions.

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272-282

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November 2013

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] Norholm A., Notes on energy conservation, FL Smidth and Co. a/s, seminar in lstanbul, Turkey, Sep. (1995).

Google Scholar

[2] Dundar, H., Benzer, H., Aydogan N.A., Altun O., Toprak N.A., Azcan O., Eksi D., Sargin A., 2011. Simulation assisted capacity improvement of cement grinding circuit: Case study cement plant. Mineral Engineering, 24 (2011), pp.205-210.

DOI: 10.1016/j.mineng.2010.08.003

Google Scholar

[3] Benzer, H., Ergun L., Oner M., Lynch A.J., 2001. Simulation of open circuit clinker grinding, Mineral Engineering, Vol 14 (7), 701-710.

DOI: 10.1016/s0892-6875(01)00066-8

Google Scholar

[4] LV Technology (2007). Available at: http: /lv-technology. com/index. php (Accessed: 28 July 2013).

Google Scholar

[5] Lynch A.J., Mineral crushing and grinding, circuits: their simulation, optimization, design and control, 1977, Elsevier, p.340.

Google Scholar

[6] Austin L. G., Luckie P. T., Shoji K., Rogers R. S. C. and Brame K., A simulation model for an air-swept ball mill grinding coal, 1984, Powder Technology, 38, pp.255-266.

DOI: 10.1016/0032-5910(84)85007-x

Google Scholar

[7] Viswanathan K., Narang K. C., Computer simulation and optimization of ball mills/circuits, World Cement, 1988, April, pp.143-148.

Google Scholar

[8] Benzer, H. 2005. Modeling and Simulation of a Fully Air Swept Ball Mill in a Raw Material Grinding Circuit. Powder Technology, 150 (2005), pp.145-154.

DOI: 10.1016/j.powtec.2004.11.009

Google Scholar

[9] Napier-Munn, T.J., Morrell, S., Morrison, R.D., Kojovic T., Mineral Comminution Circuit Their Operation and Optimisation, 1996, JKMRC, 413p.

Google Scholar

[10] Lynch, A.J., Rao, T.C., Modelling and Scale-up of Hydrocyclone Classifiers, Proceedings XI Int. Min, Proc. Congress, Cagliari, 1975, Paper 9.

Google Scholar

[11] Zhang Y. M., Napier-Munn, T.J., Kavetsky, A., Application of comminution and classification modelling to grinding of cement clinker, Transactions of Institution of Mining and Metallurgy, Sect C, 1988, 97, 207-213.

Google Scholar