C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/76
C01B 25/22 (2006.01) C01B 25/223 (2006.01) C01B 25/225 (2006.01) C01B 25/226 (2006.01)
Patent
CA 2017101
Abstract of the Invention A wet process production of phosphoric acid in which phosphate rock is digested, whereby phosphoric acid is released and calcium sulfate crystals are formed, employs a polymeric crystal modifier in the digestion stage of the process to improve the separation of the raw phosphoric acid product from the calcium sulfate crystals and to increase the concentration of phosphoric acid in the raw phosphoric acid product.
Connelly Lawrence J.
Kerr E. Michael
Roe William J.
Vallowe Robert M.
Connelly Lawrence J.
Kerr E. Michael
Nalco Chemical Company
Roe William J.
Smart & Biggar
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