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Recycling Coal Gangue as Raw Material for Portland Cement Production in Dry Rotary Kiln | IEEE Conference Publication | IEEE Xplore

Recycling Coal Gangue as Raw Material for Portland Cement Production in Dry Rotary Kiln


Abstract:

Coal gangue (CG) is one of industrial solid wastes with biggest discharging. The disposal of such a large quantity of this solid waste requires lots of land and many seri...Show More

Abstract:

Coal gangue (CG) is one of industrial solid wastes with biggest discharging. The disposal of such a large quantity of this solid waste requires lots of land and many serious environmental problems have been occurred. In this paper, CG as one of cement raw materials, and production experiments were performed in a 5000t-d-1 dry process rotary kiln to calcinations Portland cement clinker. The thermo gravimetric analyses, ash melting point test, X-ray diffraction (XRD), chemical composition of CG were measured. Utilization CG as clay for cement raw meal preparations, and a study was done for calcinations clinkers and test their performance and so on. The results revealed that CG can replace clay for Portland cement. The average output of clinker per day was increased 8.23%, and the usage of the standard coal was decreased 3.94%. The technology reference provide for CG can widely use in cement industry.
Date of Conference: 18-20 December 2010
Date Added to IEEE Xplore: 24 January 2011
Print ISBN:978-0-7695-4286-7
Conference Location: Changcha, China

I. Introduction

Coal gangue (CG) is one of industrial solid wastes with biggest discharging. It is come from when coal is excavated and washed in the production course [1]. CG has been the biggest wastes in China. The disposal of such a large quantity of this solid waste requires lots of land and many serious environmental problems have been occurred [2], [3]. How to recycle the CG and improve the quantity of recycled resources have become very important to our environment. Its major chemical composition is SiO2 and Al2O3, and its major mineralogical composition is quartz and kaolinite and so on. One kind of effective method is used widely the waste as one of cement raw materials for product Portland cement.

References

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