De Beer, Marinda; Maree, Johannes Philippus; Liebenberg, L.; Doucet, F.J.
(Elsevier, 2014-11)
The production of elemental sulphur and calcium carbonate (CaCO3) from gypsum waste can be achieved
by thermally reducing the waste into calcium sulphide (CaS), which is then subjected to a direct aqueous
carbonation ...