African Journal of Pure and Applied Chemistry
Subscribe to AJPAC
Full Name*
Email Address*

Article Number - 935CD2E1102

Vol.7(8), pp. 280-290 , August 2013
ISSN: 1996-0840

 Total Views: 0
 Downloaded: 0

Full Length Research Paper

Investigation of some factors that affect jakura limestone burning

P. C. Okonkwo* and S. S. Adefila

Department of Chemical Engineering, Ahmadu Bello University Zaria, Nigeria.

Email: [email protected]

 Accepted: 08 August 2013  Published: 31 August 2013

Copyright © 2013 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Limestone calcination reaction seems to be a very simple and straight-forward reaction. However, there are numerous critical variables that exert profound effect on lime burning operations. The factors and variables that affect the burning of limestones must be considered in the selection, design and optimization of the calcininig equipment. Limestone burning in a vertical kiln often presents complex problems which can be solved from the conception by consideration of the prevailing factors that determine the progress of calcinations reactions. The evaluation of the influence of these factors on the progress of the burning of Jakura limestone in a vertical shaft lime kiln is the thrust of this work. Basic kinetic parameters such as: diffusivity, mass transfer coefficient, conductivity, heat transfer coefficient, convective parameter, and diffusive parameter of the lime layer of the calcining limestone particle were obtained from the calcinations tests. Computer programs were developed to evaluate the effects of these factors for typical burning conditions. The shrinking core kinetic model of the reaction limited by heat and mass transfer was employed in the evaluation. The effects of chemical kinetics, stone size and gradation, calcination tempera ture, calcination time, effect of pressure and flow conditions in the kiln were evaluated.


Key words: Limestone, calcination, vertical shaft lime kiln, shrinking core kinetics, calcining equipment.

Abdullahi A (1996). Potentials of Solid Minerals Industry in Nigeria. Mufadenic Press, Nigeria p. 34.
Agnieska B (2006). PhD Dissertation Otton-von- Guericks Universitat Magdeburg
Almerinda D (1998). Modeling attrition of lomestone during calcinations and sulfation in a fluidized bed reactor. Powder Technol. 95(2):119-128.
Borgwardt RH (1989). Sintering of nascent calcium oxide. Chem. Eng. Sci. 44:53-60.
Borgwardt RH (1989). Calcination kinetics and surface area of dispersed limestone particles. AIChE J. 31(1):103-111
Borke H, Gizer O, Ipekoglu B., Ugurlu E, Serifaki K, Toprak G (2008). Characteristics of lime produced from limestone containing diatoms. Constr. Build. Mater. 22:866-874.
Boynton RS (1980). Chemistry and Technology of Lime and Limestone Wiley Inter science Pub. London, p. 56.
Dennis JS, Hayhurst AN (1987). The effect of CO2 on the kinetics and extent of calcinations of limestone and dolomite particles in fluidized- beds. Chem. Eng. Sci. 42(10):2361-2372.
Fuertes AB, Marban G, Rubiera F (1993). Kinetics of Thermal Decomposition of Limestone particles in a fluidized bed reactor, Trans. I. Chem. E:421-428.
Fuertes AB, Abad A, de Diego LF, Andanez J (2002). Calcination of Calcium based- sorbents at pressure in a broad range of CO2 concentration. Chem. Eng. Sci. 57:2387-2393.
Gilchrist JD (1989). Extraction metallurgy 3rd Ed, Oxford. Pergamon Press 145 ISBN 0-08-0366120.
Hai D, Specht E (2011). Determination of Reaction Coefficient, Thermal conductivity and Pore Diffusion in Decomposition of limestone of Different Origin. Proceedings of World Congress on Engineering and Computer Science, Vol. II WCECS 2011 October 19-21, San Francisco, USA.
Hills AWD (1968). Kinetics of Calcination of Limestone. Chem. Eng. Sci. 23:297.
Hu N, Scaroni AW (1996). Calcination of pulverized limestone particles under furnace injection condition. Fuel 75:177-186.
Kainer H, Spetch R, Jeschar R (1986). Pore diffusion, reaction and thermal conduction coefficients of various limestone and their
influence on decomposition time. Cement – Lime- Gypsum. 39:2387-2393.
Khinast J, Krammer GF, Brunner Ch, Staudinger G (1996). Decomposition of Limestone the influence of CO2 and particle size on the reaction rate. Chem. Eng. Sci. 51:373-377.
Kilic O, Aril M (2006). Effect of limestone characteristic properties and temperature on lime quality. Asian J. Chem. 18(1):655-666.
Lu D, Hughes R, Anthony E, Manovic V (2009). Sintering and Reactivity of CaCO3 – based solvents for In Situ CO2 capture in Fluidized Beds under realistic calcinations condition. J. Environ. Eng. 135:404 -410.
Moffat W, Wamsley MR (2006). Understanding Lime calcinations kinetics for Energy cost reduction. Appita Conference, New Zealand pp. 210-218.
Okonkwo PC (1991). Unpublished MSc Thesis Ahmadu Bello University Zaria.
Szekely J, Evans IW, Sohn HY (1976). Solid- Reactions, Academic Press New York.
Takkien S, Saastomoinen J, Hyppanen T (2012). Heat and mass transfer in calcinations of limestone particles. AIChE J. 58:2563-2572.
Wei R, Chen H, Yan J, Gao J (2010). Simulation on pore size distribution of calcined product from calcium based sorbents. ICDMA Proc. 2010 Int. Conf. Digital Manuf. Autom. 2:387-390.


APA (2013). Investigation of some factors that affect jakura limestone burning. African Journal of Pure and Applied Chemistry, 7(8), 280-290.
Chicago P. C. Okonkwo and S. S. Adefila. "Investigation of some factors that affect jakura limestone burning." African Journal of Pure and Applied Chemistry 7, no. 8 (2013): 280-290.
MLA P. C. Okonkwo and S. S. Adefila. "Investigation of some factors that affect jakura limestone burning." African Journal of Pure and Applied Chemistry 7.8 (2013): 280-290.

Subscription Form