DE3066353D1 - A method of purifying phosphoric acid of heavy metal - Google Patents

A method of purifying phosphoric acid of heavy metal

Info

Publication number
DE3066353D1
DE3066353D1 DE8080850070T DE3066353T DE3066353D1 DE 3066353 D1 DE3066353 D1 DE 3066353D1 DE 8080850070 T DE8080850070 T DE 8080850070T DE 3066353 T DE3066353 T DE 3066353T DE 3066353 D1 DE3066353 D1 DE 3066353D1
Authority
DE
Germany
Prior art keywords
phosphoric acid
alkali
heavy metals
sulphide
heavy metal
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.)
Expired
Application number
DE8080850070T
Other languages
German (de)
English (en)
Inventor
Hans Arne Lennart Berglund
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.)
Boliden AB
Original Assignee
Boliden AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20338025&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3066353(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Boliden AB filed Critical Boliden AB
Application granted granted Critical
Publication of DE3066353D1 publication Critical patent/DE3066353D1/de
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
    • C01B25/237—Selective elimination of impurities
    • C01B25/238—Cationic impurities, e.g. arsenic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Processing Of Solid Wastes (AREA)
DE8080850070T 1979-05-10 1980-05-08 A method of purifying phosphoric acid of heavy metal Expired DE3066353D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7904135A SE418845B (sv) 1979-05-10 1979-05-10 Forfarande for rening av vatprocessfosforsyra

Publications (1)

Publication Number Publication Date
DE3066353D1 true DE3066353D1 (en) 1984-03-08

Family

ID=20338025

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080850070T Expired DE3066353D1 (en) 1979-05-10 1980-05-08 A method of purifying phosphoric acid of heavy metal

Country Status (10)

Country Link
US (1) US4378340A (OSRAM)
EP (1) EP0023195B2 (OSRAM)
JP (1) JPH021086B2 (OSRAM)
AT (1) ATE6050T1 (OSRAM)
DE (1) DE3066353D1 (OSRAM)
DK (1) DK151216C (OSRAM)
FI (1) FI66162C (OSRAM)
NO (1) NO152505C (OSRAM)
SE (1) SE418845B (OSRAM)
WO (1) WO1980002418A1 (OSRAM)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3134847A1 (de) * 1981-09-03 1983-03-17 Hoechst Ag, 6000 Frankfurt "verfahren zur gewinnung cadmium-freier rohphosphorsaeure"
FR2520342A1 (fr) * 1982-01-25 1983-07-29 Rhone Poulenc Chim Base Procede de purification d'acide phosphorique de voie humide
DE3202658A1 (de) * 1982-01-28 1983-08-04 Hoechst Ag, 6230 Frankfurt Verfahren zur entfernung von schwermetallionen aus nassverfahrensphosphorsaeure
EP0087065B1 (de) * 1982-02-12 1985-09-25 Hoechst Aktiengesellschaft Verfahren zur Verminderung des Schwermetallgehaltes im Rohphosphat
DE3218599A1 (de) * 1982-05-18 1983-12-01 Chemische Fabrik Budenheim Rudolf A. Oetker, 6501 Budenheim Verfahren zum entfernen von cadmium aus sauren, insbesondere p(pfeil abwaerts)2(pfeil abwaerts)0(pfeil abwaerts)5(pfeil abwaerts)-haltigen loesungen
DE3604483A1 (de) * 1986-02-13 1987-08-20 Hoechst Ag Verfahren zum entfernen von schwermetallen aus mineralsaeuren
DE3604920A1 (de) * 1986-02-17 1987-08-20 Hoechst Ag Verfahren zur herstellung von rohphosphorsaeure
DE3622597A1 (de) * 1986-07-04 1988-01-07 Budenheim Rud A Oetker Chemie Verfahren zur faellung und abtrennung von cadmiumsulfid aus den raffinaten der phosphorsaeurereinigung
NL8601846A (nl) * 1986-07-15 1988-02-01 Stamicarbon Werkwijze voor het verwijderen van zware metalen uit zure fosfaathoudende waterige media.
DE3631290A1 (de) * 1986-09-13 1988-03-24 Budenheim Rud A Oetker Chemie Verfahren zur behandlung von nassverfahrensphosphorsaeure
NO164768C (no) * 1988-03-04 1990-11-14 Norsk Hydro As Fremgangsmaate for fjerning av tungmetaller, spesielt kadmium, fra fosforsyreholdige loesninger.
DE4327401A1 (de) * 1993-08-14 1995-02-16 Hoechst Ag Verfahren zur Entfernung von Blei und Cadmium aus Phosphorsäure
US20040179984A1 (en) * 2003-03-13 2004-09-16 Nagaraj D. R. Process for removing metal impurities from wet process phosphoric acid and compositions thereof
TW200944535A (en) * 2008-03-20 2009-11-01 Sigma Aldrich Co Purification and preparation of phosphorus-containing compounds
JP6099737B2 (ja) * 2012-06-21 2017-03-22 オウトテック（フィンランド）オーワイ リン含有出発原料から重金属を分離するためのプロセス及びプラント
DE102014006278B3 (de) * 2014-05-02 2015-02-26 Remondis Aqua Gmbh & Co. Kg Verfahren zur Reinigung von Roh-Phosphorsäure (z.B. MGA-Säure) durch Zugabe von Aschen aus Abfall-Verbrennungsanlagen umfassend die Gewinnung von reiner Phosphorsäure, Kalziumsulfat, wasserlöslichen Kalziumhydrogenphosphaten und Metallsalz-Lösung
FR3039830B1 (fr) 2015-08-03 2018-09-07 Ocp Sa Procede de fabrication d'un engrais a base de phosphate d'ammonium presentant une teneur reduite en cadmium
PL3691992T3 (pl) 2017-10-08 2022-10-24 Cytec Industries Inc. Sposoby usuwania metali ciężkich z roztworów kwasu fosforowego
MY207665A (en) 2020-06-16 2025-03-11 Yara Int Asa Process for the removal of heavy metals from a phosphoric acid containing composition using an ionic polymeric surfactant and use of said surfactant in the precipitation of heavy metals in a phosphoric acid containing composition
AU2021294256B2 (en) 2020-06-16 2024-01-04 Yara International Asa Process for the removal of heavy metals from a phosphoric acid containing composition
AU2021294255A1 (en) 2020-06-16 2023-02-02 Yara International Asa Process for the removal of heavy metals from a phosphoric acid containing composition using a flocculating agent
EP3964477A1 (en) 2020-09-08 2022-03-09 Yara International ASA Process for the removal of heavy metals from a phosphoric acid containing composition using an ionic polymeric surfactant
EP3964476A1 (en) 2020-09-08 2022-03-09 Yara International ASA Process for the removal of heavy metals from a phosphoric acid containing composition using a flocculating agent
EP3964478A1 (en) 2020-09-08 2022-03-09 Yara International ASA Process for the removal of heavy metals from a phosphoric acid containing composition
EP4015452A1 (en) 2020-12-21 2022-06-22 Técnicas Reunidas, S.A. Process for producing technical grade phosphoric acid from sewage sludge ash
AU2023332203A1 (en) 2022-09-02 2025-03-06 Cytec Industries Inc. Reagents and processes for removing heavy metals from phosphoric acid solutions
PL442462A1 (pl) * 2022-10-07 2024-04-08 Politechnika Wrocławska Sposób oczyszczania surowców fosforowych przez kalcynację z dodatkiem soli nieorganicznych
CN120322408A (zh) 2022-11-17 2025-07-15 塞特工业公司 用于从含磷酸的流中去除重金属的组合物和方法
WO2024256668A1 (en) 2023-06-15 2024-12-19 Cytec Industries Inc. Heavy metals removal from phosphoric acid containing streams

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE37857C1 (OSRAM) 1914-11-18
SE190035C1 (OSRAM) 1964-01-01
US935337A (en) * 1908-07-08 1909-09-28 John Herbert Thwaites Wet method of separating metallic compounds.
US1473641A (en) * 1921-08-24 1923-11-13 Pohl Otto Process of dry distilling and carbonizing crude peat
US1783757A (en) * 1927-12-14 1930-12-02 Ig Farbenindustrie Ag Dehydration of moist fuels
US1787192A (en) * 1928-08-11 1930-12-30 Rumford Chemical Works Method of purifying phosphoric acid and the like
US2183924A (en) * 1938-04-13 1939-12-19 Eugene P Schoch Lignite and process of producing the same
DE817590C (de) 1948-10-02 1951-10-18 Paul Hoppe Verfahren zum Herstellen von hochwertigem Brennstoff
US3124419A (en) * 1961-04-20 1964-03-10 Purification of phosphoric acid
US3205589A (en) * 1961-09-27 1965-09-14 West Wood Proc Corp Process of drying wood by oil immersion and vacuum treatment to selected moisture content with oil recovery
US3685964A (en) * 1970-12-09 1972-08-22 Fmc Corp Purification of alkali phosphate solution
SE393676B (sv) 1972-02-22 1977-05-16 B O Heger Forfarande for torkning av tre och andra liknande fiberprodukter
JPS5018388A (OSRAM) 1973-06-21 1975-02-26
JPS5651123B2 (OSRAM) * 1973-11-07 1981-12-03
DE2447390C3 (de) 1974-10-04 1983-11-17 Hoechst Ag, 6230 Frankfurt Verfahren zur Reinigung von Naßphosphorsäure
DE2608029C2 (de) * 1976-02-27 1984-02-23 Hoechst Ag, 6230 Frankfurt Verfahren zur Herstellung einer Alkaliphosphatlösung aus Naßverfahrensphosphorsäuren
JPS5375196A (en) * 1976-12-15 1978-07-04 Central Glass Co Ltd Removing method for heavy metals from phosphoric acid solution

Also Published As

Publication number Publication date
EP0023195B2 (en) 1988-09-21
NO152505B (no) 1985-07-01
SE7904135L (sv) 1980-11-11
DK547780A (da) 1980-12-22
US4378340A (en) 1983-03-29
EP0023195A2 (en) 1981-01-28
NO810039L (no) 1981-01-07
EP0023195B1 (en) 1984-02-01
EP0023195A3 (en) 1981-09-09
DK151216C (da) 1988-07-18
DK151216B (da) 1987-11-16
FI66162C (fi) 1984-09-10
FI801521A7 (fi) 1980-11-11
FI66162B (fi) 1984-05-31
JPS56500492A (OSRAM) 1981-04-16
ATE6050T1 (de) 1984-02-15
JPH021086B2 (OSRAM) 1990-01-10
SE418845B (sv) 1981-06-29
WO1980002418A1 (en) 1980-11-13
NO152505C (no) 1985-10-09

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Legal Events

Date Code Title Description
8366 Restricted maintained after opposition proceedings
8339 Ceased/non-payment of the annual fee