BG49095A1 - Method for processing of worked- off vanadic catalysts - Google Patents

Method for processing of worked- off vanadic catalysts

Info

Publication number
BG49095A1
BG49095A1 BG71366A BG7136685A BG49095A1 BG 49095 A1 BG49095 A1 BG 49095A1 BG 71366 A BG71366 A BG 71366A BG 7136685 A BG7136685 A BG 7136685A BG 49095 A1 BG49095 A1 BG 49095A1
Authority
BG
Bulgaria
Prior art keywords
vanadium
solution
treated
ammonium
extraction
Prior art date
Application number
BG71366A
Inventor
Askar M Kunaev
Vladillen A Kozlov
Larisa Kh Batrakova
Bulat B Bejsembaev
Andrej M Aleshin
Julija V Azhikina
Ljudmila G Berezkina
Sauk T Takezhanov
Klara Z Kuanysheva
Gennadij L Pashkov
Dmitrij V Ilinkov
Aleksandr P Voloshkin
Pavel I Volpin
Vasilij M Morozov
Vitalij N Balak
Vladimir A Gusarenko
Nikolaj M Chechulin
Jurij I Ogorodnikov
Boris M Maslennikov
Anatolij I Manokhin
Tamerlan S Shishkhanov
Gennadij K Tarabrin
Vladimir L Besman
Aleksandr Ja Bakaev
Tamara V Mulina
Tamara V Borokovskikh
Viktor G Kuzmin
Original Assignee
Inst Metallurg I Obogashchenij
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 Inst Metallurg I Obogashchenij filed Critical Inst Metallurg I Obogashchenij
Priority to BG71366A priority Critical patent/BG49095A1/en
Publication of BG49095A1 publication Critical patent/BG49095A1/en

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Catalysts (AREA)

Abstract

The method is applied in the chemical industry for extraction of vanadium from treated catalysts and derivation of pure divanadim pentoxide, vanadium catalysts and other useful products. It ensures a high level of vanadium extraction of vanadium in the finished product and an overall utilization of the treated catalyst along with the regeneration of the holder. The method: the treated vanadium catalyst is treated in a water solution of sulphuric acid in the presence of a reductor ions of vanadium (II) and the derived pulp is divided into a solution containing vanadium (IV), and a solid holder, vanadium (IV) in the solution is oxidized to vanadium (V). The latter is extracted with aliphatic amines into a non-soluble in water organic solvent, which in advance is treated with sulphuric acid with concentration of 60 to 70%, at volumetric proportion of 35-40:1. Vanadium (V) is reextracted with a water solution of ammonium in the presence of ammonium persulphate, where the effect is an organic and water phases containing a solid ammonium vanadate, while the organic phase is sent to the stage of extraction, while the water phase is filtered to residual humidity of the ammonium vanadate 50-60% and in the derived layer of ammonium vanadate is passed a solution of sulphuric acid until extraction of divanadium pentoxide and a solution of ammonium sulphate, which is subject to evaporation and crystallization.
BG71366A 1985-08-06 1985-08-06 Method for processing of worked- off vanadic catalysts BG49095A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BG71366A BG49095A1 (en) 1985-08-06 1985-08-06 Method for processing of worked- off vanadic catalysts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG71366A BG49095A1 (en) 1985-08-06 1985-08-06 Method for processing of worked- off vanadic catalysts

Publications (1)

Publication Number Publication Date
BG49095A1 true BG49095A1 (en) 1991-08-15

Family

ID=3916032

Family Applications (1)

Application Number Title Priority Date Filing Date
BG71366A BG49095A1 (en) 1985-08-06 1985-08-06 Method for processing of worked- off vanadic catalysts

Country Status (1)

Country Link
BG (1) BG49095A1 (en)

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