FR2454996A1 - Procede de production d'acide phosphorique concentre par decantation des matieres solides en suspension a l'aide d'un agent floculant - Google Patents

Procede de production d'acide phosphorique concentre par decantation des matieres solides en suspension a l'aide d'un agent floculant

Info

Publication number
FR2454996A1
FR2454996A1 FR8003791A FR8003791A FR2454996A1 FR 2454996 A1 FR2454996 A1 FR 2454996A1 FR 8003791 A FR8003791 A FR 8003791A FR 8003791 A FR8003791 A FR 8003791A FR 2454996 A1 FR2454996 A1 FR 2454996A1
Authority
FR
France
Prior art keywords
solid materials
phosphoric acid
decantation
flocculating agent
suspended solid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8003791A
Other languages
English (en)
Other versions
FR2454996B1 (fr
Inventor
Andrew Chris Poulos
Michael John Thibodeau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of FR2454996A1 publication Critical patent/FR2454996A1/fr
Application granted granted Critical
Publication of FR2454996B1 publication Critical patent/FR2454996B1/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/234—Purification; Stabilisation; Concentration
    • C01B25/235—Clarification; Stabilisation to prevent post-precipitation of dissolved impurities

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

LA PRESENTE INVENTION EST RELATIVE A L'UTILISATION DANS LA FABRICATION D'ACIDE PHOSPHORIQUE, AFIN DE DECANTER LES MATIERES SOLIDES EN SUSPENSION, D'UN COPOLYMERE DE 95MOLES DE MONOMERE D'ACRYLATE ET DE 5MOLES DE MONOMERE D'ACRYLAMIDE QUI S'EST AVERE PERMETTRE D'ELIMINER PLUS DE MATIERES SOLIDES QUE LES AGENTS FLOCULANTS DE LA TECHNIQUE ANTERIEURE LORSQU'IL EST UTILISE A DES DOSES EQUIVALENTES ET D'ELIMINER DES QUANTITES DE MATIERES SOLIDES EQUIVALENTES LORSQU'IL EST UTILISE A DES DOSES BIEN INFERIEURES.
FR8003791A 1979-04-23 1980-02-21 Procede de production d'acide phosphorique concentre par decantation des matieres solides en suspension a l'aide d'un agent floculant Expired FR2454996B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/032,594 US4291005A (en) 1979-04-23 1979-04-23 Settling out suspended solids in phosphoric acid product solutions

Publications (2)

Publication Number Publication Date
FR2454996A1 true FR2454996A1 (fr) 1980-11-21
FR2454996B1 FR2454996B1 (fr) 1985-10-25

Family

ID=21865757

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8003791A Expired FR2454996B1 (fr) 1979-04-23 1980-02-21 Procede de production d'acide phosphorique concentre par decantation des matieres solides en suspension a l'aide d'un agent floculant

Country Status (7)

Country Link
US (1) US4291005A (fr)
AU (1) AU533190B2 (fr)
BR (1) BR8002220A (fr)
CA (1) CA1125474A (fr)
FR (1) FR2454996B1 (fr)
GB (1) GB2047218B (fr)
MA (1) MA18820A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4437997A (en) 1977-03-28 1984-03-20 Standard Oil Company (Indiana) Clarification of ammonium polyphosphate solutions
US4354944A (en) * 1978-10-13 1982-10-19 Standard Oil Company (Indiana) Clarification of ammonium polyphosphate solutions
US4800071A (en) * 1988-05-03 1989-01-24 Nalco Chemical Company Filtration aids for removal of calcium solids from aqueous phosphoric acid
US5009873A (en) * 1990-01-29 1991-04-23 Nalco Chemical Company Crystal modification in wet process phosphoric acid production
US5211928A (en) * 1991-10-15 1993-05-18 Calgon Corporation Method of improving gypsum slurry filtration in the production of phosphoric acid
US5173280A (en) * 1991-10-15 1992-12-22 Calgon Corporation Method of clarifying phosphoric acid using high charge sulfonic-type polymers
US5120519A (en) * 1991-11-04 1992-06-09 Nalco Chemical Company Scale control in phosphoric acid manufacture
US5318707A (en) * 1992-08-28 1994-06-07 Calgon Corporation Method of clarifying phosphoric acid
US7396474B2 (en) * 2005-11-08 2008-07-08 Arr-Maz Products, Lp Dual injection of two polymeric filtration aids for gypsum removal from phosphoric acid/gypsum slurry
US7563378B2 (en) * 2005-11-08 2009-07-21 Arr-Max Products, LP Dual injection of two polymeric filtration aids for gypsum removal from phosphoric acid/gypsum slurry
US9187327B2 (en) 2011-01-04 2015-11-17 Nalco Company Phosphoric acid production gypsum filtration flocculant pre-dilution (make down) with post-filtration phosphoric acid
TN2018000068A1 (en) 2015-09-01 2019-07-08 Cytec Ind Inc Polymeric microparticles as filtration and/or clarifying aids in phosphoric acid production

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1336816A (fr) * 1962-07-25 1963-09-06 Progil Clarification de solutions d'acide phosphorique
FR2405897A1 (fr) * 1974-03-29 1979-05-11 Quimica Organomex Sa Composition amelioree pour floculer les matieres organiques et les impuretes minerales contenues dans l'acide phosphorique
FR2447347A1 (fr) * 1979-01-24 1980-08-22 Rhone Poulenc Ind Procede de traitement d'un acide phosphorique impur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928551A (en) * 1970-07-27 1975-12-23 American Cyanamid Co Leaching polyelectrolyte fluidized solids

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1336816A (fr) * 1962-07-25 1963-09-06 Progil Clarification de solutions d'acide phosphorique
FR2405897A1 (fr) * 1974-03-29 1979-05-11 Quimica Organomex Sa Composition amelioree pour floculer les matieres organiques et les impuretes minerales contenues dans l'acide phosphorique
FR2447347A1 (fr) * 1979-01-24 1980-08-22 Rhone Poulenc Ind Procede de traitement d'un acide phosphorique impur

Also Published As

Publication number Publication date
BR8002220A (pt) 1980-12-02
CA1125474A (fr) 1982-06-15
GB2047218B (en) 1983-03-16
US4291005A (en) 1981-09-22
MA18820A1 (fr) 1980-12-31
GB2047218A (en) 1980-11-26
FR2454996B1 (fr) 1985-10-25
AU5515180A (en) 1980-10-30
AU533190B2 (en) 1983-11-10

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Legal Events

Date Code Title Description
ST Notification of lapse