Advances in clinkering technology of calcium sulfoaluminate cement

Isabel Galan, Ammar Elhoweris, Theodore Hanein, Marcus N. Bannerman, Fredrik P. Glasser

Research output: Contribution to journalArticle


A new method for producing calcium sulfoaluminate (CS¯A) clinkers is described. Sulfur is introduced from the
gas phase as sulfur dioxide and oxygen and reacts with solids during clinkerisation. In this paper, the laboratory
experiments are described and thermodynamic calculations are presented. The sulfur-containing phases ye’elimite
and ternesite were stabilised together with belite to produce clinkers with various mineralogies. The influences
of temperature and sulfur dioxide partial pressure were analysed and their effect on the formation of undesirable
anhydrite and gehlenite was examined. The process by which a potentially hazardous waste material such as sulfur
can be used as raw material, and possibly as fuel, to form CS¯A cements, is shown to be successful.
Original languageEnglish
JournalAdvances in Cement Research
Issue number10
Publication statusPublished - 2017


  • cement clinkering


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