Production of belite calcium sulfoaluminate cement using sulfur as a fuel and as a source of clinker sulfur trioxide: pilot kiln trial

Theodore Hanein, Isabel Galan, Ammar Elhoweris, Sameer Khare, Solon Skalamprinos, Gabriel Jen, Mark Whittaker, Mohammed S. Imbabi, Fredrik P. Glasser, Marcus N. Bannerman

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Abstract

A pilot-scale trial was undertaken in a 7·4 m kiln to demonstrate the production of belite calcium sulfoaluminate cement clinker using sulfur as a raw feed. The sulfur was introduced in its elemental form as fuel to the burner, thus partially offsetting fuel costs while providing sulfur trioxide which is incorporated in the clinker. The study demonstrates that sulfur trioxide is readily sequestered into cement clinker in a standard rotary kiln; however, some scrubbing of the exit gas may still be required. As the products of scrubbing (anhydrite or gypsum) are usually required to optimise the cement formulation, the recovered sulfur product can find an immediate use in the final cement product. This trial demonstrates the successful production of targeted belite calcium sulfoaluminate clinkers at scale using sulfur as both a fuel and sulfur trioxide source.
Original languageEnglish
Article number1600018
Pages (from-to)643-653
Number of pages11
JournalAdvances in Cement Research
Volume28
Issue number10
Early online date11 Oct 2016
DOIs
Publication statusPublished - Nov 2016

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