A method for producing cement

(22) 30.04.2014

(45) 09.03.2016

(57) Summary of corresponding patent WO2014177858 A1: A method for producing calcium sulfoaluminate cement comprises the steps of providing thermal energy by combustion of sulphur and/or a sulphurcontaining compound, reacting sulphur oxides produced by combustion of the sulphur and/or sulphur-containing compound with a mixture of calcium oxide and/or carbonate, and alumina and/or its hydrates to form a sulphur-containing mixture, heating the sulphur-containing mixture using the thermal energy to produce a clinker, and reacting remaining sulphur oxides produced by combustion of the sulphur and/or sulphur-containing compound with lime. The sulphur and/or sulphur-containing compound preferably comprises elemental sulphur, sour crude, sour gas or calcium sulfate.

(73) Gulf Organisation for Research and Development