TNSN86145A1 - Separation de substances dissoutes de l'acide phosphorique de voie humide - Google Patents

Separation de substances dissoutes de l'acide phosphorique de voie humide

Info

Publication number
TNSN86145A1
TNSN86145A1 TNTNSN86145A TNSN86145A TNSN86145A1 TN SN86145 A1 TNSN86145 A1 TN SN86145A1 TN TNSN86145 A TNTNSN86145 A TN TNSN86145A TN SN86145 A TNSN86145 A TN SN86145A TN SN86145 A1 TNSN86145 A1 TN SN86145A1
Authority
TN
Tunisia
Prior art keywords
acid
phosphoric acid
separation
wet phosphoric
substances dissolved
Prior art date
Application number
TNTNSN86145A
Other languages
English (en)
Inventor
N Bauman A
Original Assignee
Internat Minerals & Chemicals Corp
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 Internat Minerals & Chemicals Corp filed Critical Internat Minerals & Chemicals Corp
Publication of TNSN86145A1 publication Critical patent/TNSN86145A1/fr

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
    • C01B25/237—Selective elimination of impurities

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Silicon Compounds (AREA)

Abstract

UN PROCEDE POUR SEPARER ET ELIMINER DES QUANTITES SUBSTANTIELLES DE MAGNESIUM ET AUTRES IMPURETES IONIQUES DE L'ACIDE PHOSPHORIQUE DE VOIE HUMIDE ,DONT LA TENRUR EN P2O5 EST 35-45% EST PROPOSE LES ETAPES DU PROCEDE COMPRENANT: (A) CHAUFFER L'ACIDE TOUT EN MAINTENANT L'ACIDE A UNE CONCENTRATION DE 35-45 % DE P2O5 PAR ADDITION D'EAU PENDANT UN TEMPS SUFFISANT POUR EFFECTUER L'ELIMINATION DU SILICIUM SOUS FORME D'ACIDE FLUOSILICIQUE ET/OU DE TETRAFLUORURE DE SILICIUM, EN FORMANT AINSI UN ACIDE LAVE ; (B) PRECIPITER DE LA RALSTONITE A PARTIR DE L'ACIDE LAVE CHAUFEE ; ET (C) SEPARER LA RALSTONITE PRECIPITEE DE L'ACIDE
TNTNSN86145A 1985-10-22 1986-10-21 Separation de substances dissoutes de l'acide phosphorique de voie humide TNSN86145A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/790,128 US4640828A (en) 1985-10-22 1985-10-22 Separation of dissolved substances from wet process phosphoric acid

Publications (1)

Publication Number Publication Date
TNSN86145A1 true TNSN86145A1 (fr) 1990-01-01

Family

ID=25149721

Family Applications (1)

Application Number Title Priority Date Filing Date
TNTNSN86145A TNSN86145A1 (fr) 1985-10-22 1986-10-21 Separation de substances dissoutes de l'acide phosphorique de voie humide

Country Status (3)

Country Link
US (1) US4640828A (fr)
MA (1) MA20771A1 (fr)
TN (1) TNSN86145A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5066471A (en) * 1990-11-26 1991-11-19 Imc Fertilizer, Inc. Lowering post-precipitation in merchant acid
TWI257915B (en) * 2004-06-29 2006-07-11 Yung-Hsiung Hsu Processes for purifying phosphoric acid

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987376A (en) * 1956-12-27 1961-06-06 Int Minerals & Chem Corp Method for defluorination of phosphoric acid
US3642439A (en) * 1969-10-15 1972-02-15 Allied Chem Method of separating magnesium from wet-process phosphoric acid
US4136199A (en) * 1977-06-27 1979-01-23 Occidental Chemical Company Metallic ion removal from phosphoric acid
US4248843A (en) * 1977-09-29 1981-02-03 Triomf Fertilizer (Proprietary) Ltd. Treatment of phosphoric acid
US4299804A (en) * 1978-03-09 1981-11-10 Agrico Chemical Company Removal of magnesium and aluminum impurities from wet process phosphoric acid
US4215098A (en) * 1978-04-26 1980-07-29 Albright & Wilson Limited Purification of wet process phosphoric acid
US4243643A (en) * 1978-10-25 1981-01-06 Occidental Chemical Company Metallic ion removal from phosphoric acid
US4409194A (en) * 1978-12-14 1983-10-11 Stauffer Chemical Company Method of separating magnesium from wet process superphosphoric acid
US4242198A (en) * 1979-03-12 1980-12-30 W. R. Grace & Co. Reduction of magnesium and other cations in phosphoric acid
US4376756A (en) * 1980-12-05 1983-03-15 Occidental Chemical Company Process for blending phosphoric acids of differing impurity content
US4379776A (en) * 1981-07-13 1983-04-12 Occidental Research Corporation Process for reducing aluminum and fluorine in phosphoric acids
US4377560A (en) * 1981-07-13 1983-03-22 Occidental Research Corporation Process for producing low aluminum content phosphoric acid from high aluminum matrix
US4435372A (en) * 1982-09-13 1984-03-06 Tennessee Valley Authority Production of purified strong wet-process phosphoric acid
US4554144A (en) * 1983-03-18 1985-11-19 Occidental Research Corporation Removal of magnesium and/or aluminum values from impure aqueous phosphoric acid

Also Published As

Publication number Publication date
US4640828A (en) 1987-02-03
MA20771A1 (fr) 1987-04-01

Similar Documents

Publication Publication Date Title
FR2603586A1 (fr) Composes derives de l'imidazoquinolinylether, et leur procede de preparation
BE874691A (fr) Procede d'elimination des impuretes de l'acide phosphorique
BE874308A (fr) Procede de recuperation d'oxyde d'ethylene contenant de faibles quantites d'impuretes aldehydiques
FI874466A (fi) Foerbaettrat hybridisationsfoerfarande, vid foerfarandet anvaent redskap och reagensfoerpackning.
MA21021A1 (fr) Procede pour eliminer les impuretes cationiques de l'acide phosphorique de voie humide
FR2310312A1 (fr) Procede pour la preparation de l'acide sulfurique
BE891130A (fr) Procede de recuperation de l'or a partir des boues anodiques resultant du raffinage electrolytique du cuivre
FR2275436A1 (fr) Procede pour la preparation de l'acide acrylique ou de l'acide methacrylique
TNSN87064A1 (fr) Procede de nettoyage de surfaces filtrantes
Klasen et al. PI (α 1-antitrypsin) subtypes: Frequency of PI* M4 in several populations
TNSN86145A1 (fr) Separation de substances dissoutes de l'acide phosphorique de voie humide
RO84661A (fr) Procede pour la preparation de l'acide oxazaphosphorin-4-thio-alcan-sulfonique ou des sels neutres
FR2376108A1 (fr) Procede de purification des diphenols
FR2548166B1 (fr) Procede pour eliminer les impuretes a partir de l'acide phosphorique obtenu par voie humide
PT75230A (fr) Procede pour la preparation de steres de l'acide 3-methylflavone-8-carboxylique
FR2447347A1 (fr) Procede de traitement d'un acide phosphorique impur
MA21046A1 (fr) Procede destine au traitement complementaire de solutions aqueuses d'acide fluosilicique .
MA21898A1 (fr) Procede de traitement de l'acide phosphorique pour en eliminer certains metaux lourds .
FR2316186A1 (fr) Procede pour la preparation de l'acide sulfurique
RO83707A (fr) Procede pour la preparation des esters chlormethyliques des derives de l'acide penycilanique
FR2560187B1 (fr) Procede de recuperation de l'acide methacrylique
FR2527598B1 (fr) Procede de preparation d'acide acetique en presence d'eau
MA19328A1 (fr) Procede de recuperation de l'uranium (vi) present dans des solutions d'acide phosphorique .
BE894090A (fr) Procede pour recuperer de l'uranium d'acide traite par voie humide
TNSN95069A1 (fr) Procede de reduction des teneurs en cadmium, en fluorure et en chlorure de l'acide phosphorique marchand