GB647588A - Improvements in the extraction of vanadium and phosphorus from salt residues - Google Patents

Improvements in the extraction of vanadium and phosphorus from salt residues

Info

Publication number
GB647588A
GB647588A GB19470/47A GB1947047A GB647588A GB 647588 A GB647588 A GB 647588A GB 19470/47 A GB19470/47 A GB 19470/47A GB 1947047 A GB1947047 A GB 1947047A GB 647588 A GB647588 A GB 647588A
Authority
GB
United Kingdom
Prior art keywords
vanadium
mixed salts
vanadium pentoxide
salts
phosphorus
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
GB19470/47A
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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 Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montedison SpA
Publication of GB647588A publication Critical patent/GB647588A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G31/00—Compounds of vanadium
    • C01G31/02—Oxides
    • 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
    • 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
    • C01B25/26—Phosphates
    • C01B25/30—Alkali metal phosphates
    • C01B25/305—Preparation from phosphorus-containing compounds by alkaline treatment
    • C01B25/306—Preparation from phosphorus-containing compounds by alkaline treatment from phosphates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G31/00—Compounds of vanadium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

Vanadium and phosphorus are extracted from mixed salts, which separate during the preparation of alumina, e.g. from bauxite, by the alkaline method, by treating with an acid until the pH is 7.5-8.5 when disodium phosphate is separated on cooling and vanadium is separated from the mother liquor. Thus the mixed salts are washed and suspended, in wash water obtained subsequently, to form a viscous paste, which is steam heated to 30-40 DEG C. and treated with sulphuric acid until the pH is 8. Disodium phosphate is crystallized from the resulting solution, after filtering at above 35 DEG C., by cooling to 10 DEG C. The crystals are centrifuged, filtered and washed, these washings being used for dissolving further mixed salts. The mother liquor is, either treated with ammonium chloride until the pH is 7 when ammonium metavanadate is precipitated which may be roasted to vanadium pentoxide, or subjected to hydrolysis to obtain vanadium pentoxide. It is stated in the Specification to be known to neutralize the mixed salts with sulphuric acid to pH about 3 in the presence of oxidizing agents such as permanganate, oxygenated water, or peroxides to obtain vanadium pentoxide by hydrolysis, or to treat saturated solutions of the salts with ammonium chloride to precipitate ammonium vanadate.
GB19470/47A 1939-04-22 1947-07-21 Improvements in the extraction of vanadium and phosphorus from salt residues Expired GB647588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT647588X 1939-04-22

Publications (1)

Publication Number Publication Date
GB647588A true GB647588A (en) 1950-12-20

Family

ID=11297056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19470/47A Expired GB647588A (en) 1939-04-22 1947-07-21 Improvements in the extraction of vanadium and phosphorus from salt residues

Country Status (2)

Country Link
FR (1) FR957371A (en)
GB (1) GB647588A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114243042A (en) * 2021-12-09 2022-03-25 大连博融新材料有限公司 Method for preparing vanadium electrolyte by circularly extracting vanadium without ammonium and liquid and vanadium electrolyte

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2951541B1 (en) 2009-10-21 2011-11-04 Peugeot Citroen Automobiles Sa APPARATUS FOR EXHAUST GAS ANALYSIS OF AN ENGINE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114243042A (en) * 2021-12-09 2022-03-25 大连博融新材料有限公司 Method for preparing vanadium electrolyte by circularly extracting vanadium without ammonium and liquid and vanadium electrolyte

Also Published As

Publication number Publication date
FR957371A (en) 1950-02-18

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