Abstract: A flow enhanced calcium sulfate product includes a calcium sulfate source material, such as a flue gas desulphurization by-product, is pre-blended with a granular feedstock exhibiting good cementitious properties. The flow enhanced calcium sulfate is fed to a cement mill where it is combined with clinker during a finishing grinding process for portland cement. The flow enhanced calcium sulfate exhibits good flowability without changing the properties of the cement.

Abstract: A flow enhanced calcium sulfate product includes a calcium sulfate source material, such as a flue gas desulphurization by-product, is pre-blended with a granular feedstock exhibiting good cementitious properties. The flow enhanced calcium sulfate is fed to a cement mill where it is combined with clinker during a finishing grinding process for portland cement. The flow enhanced calcium sulfate exhibits good flowability without changing the properties of the cement.

Abstract: A method of manufacturing gypsum board includes applying compressed air to an input end of a tube, wherein the tube includes the input end, an output end, and a venturi located between the input end and the output end; admitting a foaming agent to the input end of the tube so as to form a mixture of the compressed air and the diluted foaming agent; passing the mixture through the venturi and out the output end; combining the mixture with gypsum and water to form a gypsum slurry; and casting the gypsum slurry onto a continuous web for forming a gypsum board.