ammonium sulphate from gypsum production process
Manufacture of ammonium sulfate fertilizer from FGDgypsum article{osti_460120, title = {Manufacture of ammonium sulfate fertilizer from FGDgypsum}, author = {Chou, M and Bruinius, J A and Li, Y C}, abstractNote = {The goal of this study is to assess the technical and economic feasibility of producing marketable products, namely fertilizergrade ammonium sulfate and calcium