FI894965A0 - Foerfarande foer avlaegsning av tungmetaller fraon fosforsyra. - Google Patents

Foerfarande foer avlaegsning av tungmetaller fraon fosforsyra.

Info

Publication number
FI894965A0
FI894965A0 FI894965A FI894965A FI894965A0 FI 894965 A0 FI894965 A0 FI 894965A0 FI 894965 A FI894965 A FI 894965A FI 894965 A FI894965 A FI 894965A FI 894965 A0 FI894965 A0 FI 894965A0
Authority
FI
Finland
Prior art keywords
tungmetaller
fosforsyra
fraon
foerfarande foer
avlaegsning
Prior art date
Application number
FI894965A
Other languages
English (en)
Other versions
FI83863B (fi
FI83863C (fi
Inventor
Esko Kari
Matti Kivioja
Original Assignee
Kemira Oy
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 Kemira Oy filed Critical Kemira Oy
Priority to FI894965A priority Critical patent/FI83863C/fi
Publication of FI894965A0 publication Critical patent/FI894965A0/fi
Priority to MA22248A priority patent/MA21979A1/fr
Priority to NL9002270A priority patent/NL9002270A/nl
Publication of FI83863B publication Critical patent/FI83863B/fi
Application granted granted Critical
Publication of FI83863C publication Critical patent/FI83863C/fi

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
    • C01B25/22—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
    • C01B25/225—Dihydrate 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
    • C01B25/234—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)
  • Manufacture And Refinement Of Metals (AREA)
  • Extraction Or Liquid Replacement (AREA)
FI894965A 1989-10-18 1989-10-18 Foerfarande foer avlaegsning av tungmetaller fraon fosforsyra. FI83863C (fi)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI894965A FI83863C (fi) 1989-10-18 1989-10-18 Foerfarande foer avlaegsning av tungmetaller fraon fosforsyra.
MA22248A MA21979A1 (fr) 1989-10-18 1990-10-16 Procede pour l'eloignement des metaux lourds de l'acide phosphorique .
NL9002270A NL9002270A (nl) 1989-10-18 1990-10-18 Werkwijze voor het verwijderen van zware metalen uit fosforzuur.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI894965 1989-10-18
FI894965A FI83863C (fi) 1989-10-18 1989-10-18 Foerfarande foer avlaegsning av tungmetaller fraon fosforsyra.

Publications (3)

Publication Number Publication Date
FI894965A0 true FI894965A0 (fi) 1989-10-18
FI83863B FI83863B (fi) 1991-05-31
FI83863C FI83863C (fi) 1991-09-10

Family

ID=8529187

Family Applications (1)

Application Number Title Priority Date Filing Date
FI894965A FI83863C (fi) 1989-10-18 1989-10-18 Foerfarande foer avlaegsning av tungmetaller fraon fosforsyra.

Country Status (3)

Country Link
FI (1) FI83863C (fi)
MA (1) MA21979A1 (fi)
NL (1) NL9002270A (fi)

Also Published As

Publication number Publication date
FI83863B (fi) 1991-05-31
FI83863C (fi) 1991-09-10
MA21979A1 (fr) 1991-07-01
NL9002270A (nl) 1991-05-16

Similar Documents

Publication Publication Date Title
FI890552A0 (fi) Maetning av blodets sammansaettning.
FI906189A (fi) Braenslepatron foer en kaernereaktor av laettvattentyp.
FI890429A (fi) Foerfarande foer framstaellning av vaeteperoxid.
FI83359B (fi) Foerfarande foer framstaellning av en takskiva.
FI890463A (fi) Foerfarande foer detektering av metallstycken.
FI890765A (fi) Nytt foerfarande foer framstaellning av en polymeriseringskatalysatorkomponent foer olefiner.
FI890428A (fi) Foerfarande foer framstaellning av vaeteperoxid.
FI890963A0 (fi) Foerfarande foer behandling av braenngas producerad av avlutar fraon alkaliska cellulosaprocesser.
FI890397A (fi) Industriell framstaellning av torrkoett.
FI890546A0 (fi) Anordning foer tillverkning av en katsa.
FI890222A (fi) Foerfarande foer framstaellning av granulerade peroxidfoereningar.
FI890330A0 (fi) Foerfarande foer framstaellning av laminatmaterial.
FI890360A (fi) Anlaeggning foer roekning av livsmedel.
FI890371A (fi) Gripanordning foer en gaffeltruck foer lyftning av en rullpall.
FI890378A (fi) Knivarrangemang foer framstaellning av granultorv.
FI890597A0 (fi) Foerfarande foer framstaellning av terapeutiskt anvaendbara lipofiliska oxadiazoler.
FI890212A (fi) Anordning foer odling av mikroorganismer.
FI890061A0 (fi) Foerfarande foer styrning av en mekanisk resonanshand.
FI890057A0 (fi) Anordning foer vaendning av buntar.
FI890025A0 (fi) Anordning foer lottning av lottonummer.
FI890023A0 (fi) Stroemkrets foer aostadkommande av stroembegraensad spaenningstillfoersel.
FI890596A (fi) Foerfarande foer framstaellning av terapeutiskt anvaendbara oxadiazolyl-azabicykloheptaner.
FI890016A (fi) Foerfarande foer framstaellning av raotallolja.
FI890610A (fi) Anordning foer lyftande av fiskar.
FI890680A (fi) Aong- och kondensatkoppling foer torkningscylindern av en pappersmaskin.

Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: KEMIRA OY