The ammonium sulfate plant with a production capacity of 250,000 tons/year is planned to be established in 2035 in Gresik Regency, East Java Province, which is estimated to have an area of 10 hectares. The raw materials are Phosphogypsum (Calcium Dihydrate) and Ammonium Carbonate. The process occurs in a Continuous Stirred Tank Reactor, at a temperature of 45 oC and a pressure of 1 atm. This fa…