NL8601846A - Werkwijze voor het verwijderen van zware metalen uit zure fosfaathoudende waterige media. - Google Patents

Werkwijze voor het verwijderen van zware metalen uit zure fosfaathoudende waterige media. Download PDF

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Publication number
NL8601846A
NL8601846A NL8601846A NL8601846A NL8601846A NL 8601846 A NL8601846 A NL 8601846A NL 8601846 A NL8601846 A NL 8601846A NL 8601846 A NL8601846 A NL 8601846A NL 8601846 A NL8601846 A NL 8601846A
Authority
NL
Netherlands
Prior art keywords
calcium
phosphate
heavy metals
sulfate
phosphoric acid
Prior art date
Application number
NL8601846A
Other languages
English (en)
Dutch (nl)
Original Assignee
Stamicarbon
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 Stamicarbon filed Critical Stamicarbon
Priority to NL8601846A priority Critical patent/NL8601846A/nl
Priority to US07/069,512 priority patent/US4822582A/en
Priority to MA21270A priority patent/MA21033A1/fr
Priority to CA000541862A priority patent/CA1327113C/fr
Priority to IL83181A priority patent/IL83181A/xx
Priority to FI873107A priority patent/FI82827C/fi
Priority to EP87201356A priority patent/EP0253454B1/fr
Priority to ES87201356T priority patent/ES2019372B3/es
Priority to ZA875147A priority patent/ZA875147B/xx
Priority to AT87201356T priority patent/ATE58358T1/de
Priority to DE8787201356T priority patent/DE3766173D1/de
Priority to TNTNSN87088A priority patent/TNSN87088A1/fr
Publication of NL8601846A publication Critical patent/NL8601846A/nl
Priority to GR91400176T priority patent/GR3001466T3/el

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
    • 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
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
    • C01B25/226—Hemihydrate process
    • 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
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/228—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen one form of calcium sulfate being formed and then converted to another form
    • C01B25/229—Hemihydrate-dihydrate process
    • C01B25/2295—Hemihydrate-dihydrate process the conversion being performed in one or more vessels different from those used for reaction after separation of phosphoric acid
    • 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
    • C01B25/238—Cationic impurities, e.g. arsenic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
    • C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20—Organic substances
    • A62D2101/24—Organic substances containing heavy metals
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/40—Inorganic substances
    • A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Business, Economics & Management (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Geology (AREA)
  • Removal Of Specific Substances (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
NL8601846A 1986-07-15 1986-07-15 Werkwijze voor het verwijderen van zware metalen uit zure fosfaathoudende waterige media. NL8601846A (nl)

Priority Applications (13)

Application Number Priority Date Filing Date Title
NL8601846A NL8601846A (nl) 1986-07-15 1986-07-15 Werkwijze voor het verwijderen van zware metalen uit zure fosfaathoudende waterige media.
US07/069,512 US4822582A (en) 1986-07-15 1987-07-02 Process for the removal of heavy metals from acid, phosphate-containing, aqueous media
MA21270A MA21033A1 (fr) 1986-07-15 1987-07-13 Procede pour l'elimination des metaux lourds des milieux aqueux acides contenant du phosphate .
CA000541862A CA1327113C (fr) 1986-07-15 1987-07-13 Procede pour l'elimination de metaux lourds dans des media aqueux, acides, renfermant des phosphates
FI873107A FI82827C (fi) 1986-07-15 1987-07-14 Foerfarande foer avlaegsnande av tungmetaller fraon surt, fosfatinnehaollande, vattenhaltigt medium.
IL83181A IL83181A (en) 1986-07-15 1987-07-14 Process for the removal of heavy metals from acid,phosphate-containing,aqueous media
EP87201356A EP0253454B1 (fr) 1986-07-15 1987-07-14 Procédé d'élimination de métaux lourds à partir de milieux aqueux acides contenant du phosphate
ES87201356T ES2019372B3 (es) 1986-07-15 1987-07-14 Procedimiento para la separacion de metales pesados a partir de medios acuosos acidos que contienen fosfatos
ZA875147A ZA875147B (en) 1986-07-15 1987-07-14 Process for the removal of heavy from acid,phosphate-containing,aqueous media
AT87201356T ATE58358T1 (de) 1986-07-15 1987-07-14 Verfahren zur beseitigung von schwermetallen aus waessrigen, sauren, phosphat enthaltenden medien.
DE8787201356T DE3766173D1 (de) 1986-07-15 1987-07-14 Verfahren zur beseitigung von schwermetallen aus waessrigen, sauren, phosphat enthaltenden medien.
TNTNSN87088A TNSN87088A1 (fr) 1986-07-15 1987-07-15 Procede pour l'elimination des metaux lourd des milieux aqueux acides, contenant du phosphate
GR91400176T GR3001466T3 (en) 1986-07-15 1991-02-11 Process for the removal of heavy metals from acid, phosphate-containing aqueous media

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8601846A NL8601846A (nl) 1986-07-15 1986-07-15 Werkwijze voor het verwijderen van zware metalen uit zure fosfaathoudende waterige media.
NL8601846 1986-07-15

Publications (1)

Publication Number Publication Date
NL8601846A true NL8601846A (nl) 1988-02-01

Family

ID=19848319

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8601846A NL8601846A (nl) 1986-07-15 1986-07-15 Werkwijze voor het verwijderen van zware metalen uit zure fosfaathoudende waterige media.

Country Status (13)

Country Link
US (1) US4822582A (fr)
EP (1) EP0253454B1 (fr)
AT (1) ATE58358T1 (fr)
CA (1) CA1327113C (fr)
DE (1) DE3766173D1 (fr)
ES (1) ES2019372B3 (fr)
FI (1) FI82827C (fr)
GR (1) GR3001466T3 (fr)
IL (1) IL83181A (fr)
MA (1) MA21033A1 (fr)
NL (1) NL8601846A (fr)
TN (1) TNSN87088A1 (fr)
ZA (1) ZA875147B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649391B1 (fr) * 1989-07-04 1991-10-31 Pierre Becker Procede de traitement de l'acide phosphorique pour en eliminer certains metaux lourds
FR2652076B1 (fr) * 1989-09-20 1992-03-20 Rhone Poulenc Chimie Procede de recuperation des valeurs de terres rares dans les gypses.
US5102556A (en) * 1990-03-30 1992-04-07 Union Oil Company Of California Method for rendering ferric hydroxide sludges recyclable
TNSN92119A1 (fr) * 1992-02-07 1993-06-08 Ct D Etudes Et De Rech S Des Phosphates Mineraux Cerphos Procede de fabrication d'acide phosphorique marchand a tres basse teneur en cadmium
WO2008113403A1 (fr) * 2007-03-06 2008-09-25 Centre D'etudes Et De Recherches Des Phosphates Mineraux Procede de traitement de solides cadmiferes
WO2014027348A1 (fr) * 2012-08-16 2014-02-20 Rotem Amfert Negev Ltd. Procédé de fabrication d'acide phosphorique à teneur en cadmium réduite
FR3117476B1 (fr) 2020-12-10 2023-04-21 Ocp Sa Procede integre de decadmiation d’acide phosphorique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1601208A (en) * 1921-02-03 1926-09-28 Fed Phosphorus Co Process of purifying phosphoric acid
US2081351A (en) * 1934-09-13 1937-05-25 Monsanto Chemicals Process for the treatment of phosphoric acid
DE2218382C3 (de) * 1972-04-15 1975-08-21 Gebrueder Giulini Gmbh, 6700 Ludwigshafen Verfahren zur Herstellung von reinem Calciumsulfat beim Phosphorsäurenaßaufschluß
SE418845B (sv) * 1979-05-10 1981-06-29 Boliden Ab Forfarande for rening av vatprocessfosforsyra
JPS5933526B2 (ja) * 1980-07-28 1984-08-16 セントラル硝子株式会社 ウラン含有量の多い湿式リン酸の製造方法
US4388292A (en) * 1981-12-14 1983-06-14 United States Gypsum Company Process for reducing radioactive contamination in phosphogypsum

Also Published As

Publication number Publication date
FI82827C (fi) 1991-04-25
MA21033A1 (fr) 1988-04-01
TNSN87088A1 (fr) 1990-01-01
IL83181A0 (en) 1987-12-31
ES2019372B3 (es) 1991-06-16
US4822582A (en) 1989-04-18
DE3766173D1 (de) 1990-12-20
ATE58358T1 (de) 1990-11-15
FI873107A (fi) 1988-01-16
EP0253454A1 (fr) 1988-01-20
FI873107A0 (fi) 1987-07-14
CA1327113C (fr) 1994-02-22
IL83181A (en) 1991-04-15
ZA875147B (en) 1988-03-30
GR3001466T3 (en) 1992-10-08
EP0253454B1 (fr) 1990-11-14
FI82827B (fi) 1991-01-15

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BV The patent application has lapsed