Life Cycle Assessment of Cement Clinker Production Using Coal Gangue as Alternative Raw Material and Fuel

Abstract:

Life cycle assessment (LCA) was carried out to quantify and analyze the environmental impact and benefit caused by the utilization of coal gangue as alternative raw material and fuel in cement clinker production. The optimal dosage of coal gangue was determined by comparing among different mixing amount scenarios and Portland cement clinker (clinker without adding any waste) considering the phases of coal gangue disposal, transportation, and raw meal grinding and clinker calcination. The results showed that: 1) After adding coal gangue to the raw meal, almost all the considered environmental impacts of cement clinker including human toxicity potential, photochemical smog potential, especially abiotic depletion potential decreased significantly. However, global warming potential and acidification potential increased slightly in comparison with Portland cement clinker. 2) Compared with the Portland cement clinker, the single environmental indicator reduced after adding coal gangue and the indicator decreased gradually with the dosage increasing.

• Periodical: Materials Science Forum (Volume 814)
• Pages: 435-440
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.814.435
• Online since: March 2015
• Authors: Jia Ping Cui, Yu Liu*, Zhi Hong Wang, Xian Zheng Gong, Feng Gao, Li Li Zhao, Li Wei Hao
• Keywords: Cement Clinker, Coal Gangue, Life Cycle Assessment

References

[1] G. H. Qiu, Y. Xu, Z. l. Shi, Feasibility Analysis of cement using coal gangue to replace clay. Journal of Zhejiang University, 44(2010) 1004-1008.

[2] J. G. An. Practices of cement clinker using unburned coal gangue to batch, Cement. (2011) 43-49.

[3] S. Hui, L. Yuan, Development of eco-cement of protecting the environment, Environment protection (2002) 39-41.

[4] Anne Solgard, Bas de Leuw. UNEP/SETAC life cycle initiative: Promoting a life-cycle approach. The International Journal of Life cycle Assessment, 7(2002) 199-202.

DOI: 10.1007/bf02978874

[5] D.W. Pennington, J. Potting, Life cycle assessment part 2: current impact assessment practice. Environmental International, 30(2004) 721-739.

DOI: 10.1016/j.envint.2003.12.009

[6] B. G. Ma, X. R. Cao, The study of using coal gangue to produce low environment load and high performance cement, Cement (2004) 69-74.

[7] Eco-invent Centre．Eco-invent data v2. 0 Final Reports Eco-invent 2000．Swiss Centre for Life Cycle Inventories, (2007) 1-23.

[8] X. H. Di, The research of several basic problems of life cycle analysis of resources and material. Beijing University of Technology, (2005) 67-70.

[9] B. R. Yuan, Measurement method and application of sustainable development of the chemical industry. Beijing University of Technology, (2006) 77-80.

[10] Editorial Committee, China Transportation Yearbook, Beijing, (2010).

[11] H. Li. Analysis of development situation of Twelve Five, of China Coal Transportation, J. Integrated transport, (2011) 13-18.

[12] L. P. Ma, X. Z. Gong, Life Cycle Inventory analysis of urban road trucking. New Progress in Materials Science and Engineering, (2006) 3-8.

[13] D. Q. Chen, G. H. Jiang, Using coal gangue to replace sandstone to produce cement clinker. Cement, (2013) 23-24.

[14] State Power Environmental Protection Research Institute. The manual of pollutant emission coefficient of 411 thermal power industry.

[15] F. Gao, Life cycle assessment and its application in China magnesium industry, Beijing University of Technology PhD thesis, (2005).

[16] Y. Lu, The environmental impact assessment model and application of land use of materials production, Beijing University of Technology, PhD thesis, (2012).

[17] B. Jeroen. Guinee, Reinout Heijungs, et al, Life cycle assessment: An operational guide to the ISO standards. Dordrecht: Kluwer Academic Publisher, (2001) 48-50.