EP 1771378 A1 20070411 - METHOD FOR PRODUCING PHOSPHORIC ACID
Title (en)
METHOD FOR PRODUCING PHOSPHORIC ACID
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PHOSPHORSÄURE
Title (fr)
PROCEDE DE PRODUCTION D'ACIDE PHOSPHORIQUE
Publication
Application
Priority
- EP 2005052495 W 20050601
- BE 200400273 A 20040601
Abstract (en)
[origin: WO2005118470A1] The invention relates to a method for producing phosphoric acid involving: a formation of a first aqueous slurry containing calcium sulfate dihydrate and phosphoric acid; a formation of a second aqueous slurry containing calcium sulfate hemihydrate and phosphoric acid; a filtering of a mixture comprised of the two slurries through a filter while forming a filter cake simultaneously containing calcium sulfate dihydrate and hemihydrate, and; separating an aqueous phase containing the phosphoric acid.
IPC 8 full level
C01B 25/225 (2006.01); C01B 25/226 (2006.01)
CPC (source: EP)
C01B 25/225 (2013.01); C01B 25/226 (2013.01)
Citation (search report)
See references of WO 2005118470A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005118470 A1 20051215; BE 1016065 A3 20060207; BR PI0510525 A 20071030; CN 1960941 A 20070509; CN 1960941 B 20100908; EA 010973 B1 20081230; EA 200602217 A1 20070427; EP 1771378 A1 20070411; MA 28704 B1 20070601; TN SN06394 A1 20080222
DOCDB simple family (application)
EP 2005052495 W 20050601; BE 200400273 A 20040601; BR PI0510525 A 20050601; CN 200580017914 A 20050601; EA 200602217 A 20050601; EP 05756810 A 20050601; MA 29591 A 20061229; TN SN06394 A 20061130