GB781721A - Improvements in or relating to extraction of uranium compounds - Google Patents

Improvements in or relating to extraction of uranium compounds

Info

Publication number
GB781721A
GB781721A GB1113948A GB1113948A GB781721A GB 781721 A GB781721 A GB 781721A GB 1113948 A GB1113948 A GB 1113948A GB 1113948 A GB1113948 A GB 1113948A GB 781721 A GB781721 A GB 781721A
Authority
GB
United Kingdom
Prior art keywords
dihydropyran
tetrahydropyran
washed
solution
nitric acid
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
GB1113948A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1113948A priority Critical patent/GB781721A/en
Publication of GB781721A publication Critical patent/GB781721A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B60/00Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
    • C22B60/02Obtaining thorium, uranium, or other actinides
    • C22B60/0204Obtaining thorium, uranium, or other actinides obtaining uranium
    • C22B60/0217Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes
    • C22B60/0252Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries
    • C22B60/026Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries liquid-liquid extraction with or without dissolution in organic solvents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

Uranyl nitrate is separated from aqueous solutions thereof by extraction with an organic compound containing a cyclic ether group and especially such a compound having a 5- or 6-membered ring. Preferred compounds have a furane of pyran nucleus, for example tetrahydrofurane, tetrahydropyran and dihydropyran. The organic compounds preferably contain only carbon and hydrogen besides the cyclic ether group. According to examples: (1) aqueous uranyl nitrate solution containing ammonium nitrate and nitric acid was extracted with an equal volume of tetrahydrosylvane, the partition coefficient being 38. The uranium compound is recoverable by evaporation of the organic compound which may be condensed and used for further extractions; (5) Monazite sand was heated with concentrated sulphuric acid at 200 DEG C., the mixture cooled, centrifuged and the supernatant liquid separated. The residual sulphates were washed with concentrated sulphuric acid and the liquid removed. The solids were dissolved in water and caustic soda added to a pH of 8 whereupon the precipitated solids were filtered, washed and dissolved in nitric acid to yield a solution having a pH of 1.5. This nitric acid solution was extracted with 2-methyltetrahydrofurane and the organic solvent extract was washed with water to bring the uranium into an aqueous solution which aqueous solution was evaporated to dryness and calcined to U3O8. Further examples compare the extractions with tetrahydropyran, dihydropyran and the conventional extraction solvent, diethyl ether. Further cyclic ethers which are referred to are 2 - methyl - tetrahydrofurane (tetrahydrosylvane), 1 - methyl - 3 - (21 - tetrahydrofuryl) propyl ether, tetrahydropyran, dihydropyran, di - (21 - tetrahydrofuryl) - 1 : 5 - pentane, 2 - n - butyltetrahydrofurane, 2 - n - butyl furane.
GB1113948A 1948-04-22 1948-04-22 Improvements in or relating to extraction of uranium compounds Expired GB781721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1113948A GB781721A (en) 1948-04-22 1948-04-22 Improvements in or relating to extraction of uranium compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1113948A GB781721A (en) 1948-04-22 1948-04-22 Improvements in or relating to extraction of uranium compounds

Publications (1)

Publication Number Publication Date
GB781721A true GB781721A (en) 1957-08-21

Family

ID=9980747

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1113948A Expired GB781721A (en) 1948-04-22 1948-04-22 Improvements in or relating to extraction of uranium compounds

Country Status (1)

Country Link
GB (1) GB781721A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011087841A1 (en) * 2009-12-22 2011-07-21 Bridgestone Corporation Improved vinyl modifier composition and processes for utilizing such composition
CN105525102A (en) * 2015-12-11 2016-04-27 中国科学院近代物理研究所 Extraction method of uranium in salt lake brine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011087841A1 (en) * 2009-12-22 2011-07-21 Bridgestone Corporation Improved vinyl modifier composition and processes for utilizing such composition
CN102770418A (en) * 2009-12-22 2012-11-07 株式会社普利司通 Improved vinyl modifier composition and processes for utilizing such composition
US9062017B2 (en) 2009-12-22 2015-06-23 Bridgestone Corporation Vinyl modifier composition and processes for utilizing such composition
CN102770418B (en) * 2009-12-22 2015-09-23 株式会社普利司通 The vinyl modifier composition improved and the technique utilizing said composition
US9309330B2 (en) 2009-12-22 2016-04-12 Bridgestone Corporation Vinyl modifier composition and processes for utilizing such composition
US9868795B2 (en) 2009-12-22 2018-01-16 Bridgestone Corporation Vinyl modifier composition and processes for utilizing such composition
US10723817B2 (en) 2009-12-22 2020-07-28 Bridgestone Corporation Vinyl modifier composition and processes for utilizing such composition
CN105525102A (en) * 2015-12-11 2016-04-27 中国科学院近代物理研究所 Extraction method of uranium in salt lake brine
CN105525102B (en) * 2015-12-11 2018-08-03 中国科学院近代物理研究所 The extracting method of uranium in salt lake bittern

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