Advances in clinkering technology of calcium sulfoaluminate cement

A new method for producing calcium sulfoaluminate ([Formula: see text]) 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...

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Bibliographic Details
Published in:Advances in cement research 2017-11, Vol.29 (10), p.405-417
Main Authors: Galan, Isabel, Elhoweris, Ammar, Hanein, Theodore, Bannerman, Marcus N., Glasser, Fredrik P.
Format: Article
Language:English
Subjects:
Calcium
Dicalcium silicate
Gehlenite
Hazardous materials
Hazardous wastes
Partial pressure
Sulfoaluminate cement
Sulfur
Sulfur dioxide
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Summary:A new method for producing calcium sulfoaluminate ([Formula: see text]) 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 [Formula: see text] cements, is shown to be successful.
ISSN:0951-7197
1751-7605
DOI:10.1680/jadcr.17.00028