Abstract
The study evaluates the energy consumption of both wet and dry processes cement manufacturing plant in Nigeria. Enrgy consumption data collected for the period 2003 to 2011 were used to estimate the energy consumption of the crushing, milling, agitation, burning, grinding and bagging operations. The total energy evaluation was based on the three primary energy sources which include electrical, combustion and human. The total estimated energy intensities were 6545 MJ/ton and 4197 MJ/ton for wet and dry processes respectively. The percentage consumption of energy in each operation is 93.68 and 90.34% (burning), 2.11 and 4.33% (milling), 0.43 and 0.67% (crushing), 1.39 and 0% (agitation), 2.12 and 3.90% (grinding), and 0.27 and 0.75% (bagging) of the total energy inputs for the wet and dry processes respectively. Furthermore, the average total energy cost of production showed that wet process is approximately 40% more cost intensive in cement production than the dry process while at the same time it is cost effective to run production on energy through gas powered plant than the national grid.
Highlights
Cement and/or clinker is a commodity being produced in over 150 countries of the world [1]
In Nigeria, cement production grew rapidly from 2 million tonnes in 2002 to 17 million in 2011 [4]. This has led to the Nigeria cement industry accounting for 63.6% of the West African region’s cement output in 2011
Production is in excess of sales having recorded a zero importation from January 2012 to date and in the process of formalizing the exportation of cement to Economic Community of West African States (ECOWAS)
Summary
Cement and/or clinker (cement primary input) is a commodity being produced in over 150 countries of the world [1]. It is an essential input into the production of concrete needed for building purposes and other construction related activities. In Nigeria, cement production grew rapidly from 2 million tonnes in 2002 to 17 million in 2011 [4]. This has led to the Nigeria cement industry accounting for 63.6% of the West African region’s cement output in 2011. Production is in excess of sales having recorded a zero importation from January 2012 to date and in the process of formalizing the exportation of cement to Economic Community of West African States (ECOWAS)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
