SE7809656L - PROCEDURE FOR PURIFICATION OF VAT PROCESS PHOSPHORIC ACID IN CONNECTION WITH NEUTRALIZATION - Google Patents

PROCEDURE FOR PURIFICATION OF VAT PROCESS PHOSPHORIC ACID IN CONNECTION WITH NEUTRALIZATION

Info

Publication number
SE7809656L
SE7809656L SE7809656A SE7809656A SE7809656L SE 7809656 L SE7809656 L SE 7809656L SE 7809656 A SE7809656 A SE 7809656A SE 7809656 A SE7809656 A SE 7809656A SE 7809656 L SE7809656 L SE 7809656L
Authority
SE
Sweden
Prior art keywords
neutralization
phosphoric acid
purification
procedure
connection
Prior art date
Application number
SE7809656A
Other languages
Swedish (sv)
Other versions
SE417814B (en
Inventor
H A L Berglund
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
Application filed by Boliden Ab filed Critical Boliden Ab
Priority to SE7809656A priority Critical patent/SE417814B/en
Publication of SE7809656L publication Critical patent/SE7809656L/en
Publication of SE417814B publication Critical patent/SE417814B/en

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)
  • Removal Of Specific Substances (AREA)

Abstract

The invention relates to a process for the purification of phosphoric acid by the elimination of magnesium in conjunction with the neutralization of phosphoric acid in two stages. The first neutralization stage gives a precipitate, which is separated off. The ratio by weight between fluorine and magnesium in the filtrate is then controlled until the F:Mg ratio lies in the range between 1.5:1 and 0.5:1. The second stage of neutralization is then carried out in the conventional manner, and the precipitate thus formed is separated off.
SE7809656A 1978-09-13 1978-09-13 Process for the purification of phosphoric acid by the elimination of magnesium SE417814B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE7809656A SE417814B (en) 1978-09-13 1978-09-13 Process for the purification of phosphoric acid by the elimination of magnesium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7809656A SE417814B (en) 1978-09-13 1978-09-13 Process for the purification of phosphoric acid by the elimination of magnesium

Publications (2)

Publication Number Publication Date
SE7809656L true SE7809656L (en) 1980-03-14
SE417814B SE417814B (en) 1981-04-13

Family

ID=20335818

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7809656A SE417814B (en) 1978-09-13 1978-09-13 Process for the purification of phosphoric acid by the elimination of magnesium

Country Status (1)

Country Link
SE (1) SE417814B (en)

Also Published As

Publication number Publication date
SE417814B (en) 1981-04-13

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