Phosphohemihydrate process for purification of gypsum

Details Phosphohemihydrate process for purification of gypsum Phosphohemihydrate process for purification of gypsum

C - Chemistry, Metallurgy

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C01B 25/226 (2006.01) C01B 25/225 (2006.01) C01B 25/229 (2006.01) C01F 11/46 (2006.01)

Patent

CA 1181925

PHOSPHOHEMIHYDRATE PROCESS FOR PURIFICATION OF GYPSUM Abstract of the Disclosure A wet process for producing phosphoric acid and phospho- hemihydrate by acidulation of phosphate rock. A strong phos- phoric acid is obtained with concomitant production of an improved calcium sulfate that is extremely low in radioactivity.

431425

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