Patented FGD Gypsum Conversion Process
Sparstane employs a carefully designed, patented method for converting FDG gypsum. Our conversion process involves the use of a unique crystal polymorph to produce the by-products of ammonium sulfate and calcium carbonate from the FGD Gypsum. Our first official U.S. patent was awarded in June of 2014, and our second in June of 2017.
Click below to read our patents and learn more about our unique collection process.
Sparstane has added the capability of addressing the challenges of calcium sulfite disposal in addition to synthetic gypsum.
The American Coal Ash Association, established in 1968, is a nonprofit trade association devoted to recycling the materials created when we burn coal to generate electricity. Our members comprise the world’s foremost experts on coal ash (fly ash and bottom ash), and boiler slag, flue gas desulfurization gypsum (FGD or “synthetic” gypsum), and other flue gas materials captured by emissions controls.