This invention relates to the reductive decomposition of calcium sulfate and more particularly to a procedure by which calcium sulfate is reduced to produce lime and sulfur in. a readily convertible form, i.e., sulfur dioxide.
US 3,087,790 A
Iowa State College Research Foundation
Wheelock, Thomas D. and Boylan, David R., "Reductive decomposition of calium sulfate" (1963). Iowa State University Patents. 306.