GB1012511A - A process for the production of therium oxide and of mixed oxides which are rich in thorium oxide - Google Patents

A process for the production of therium oxide and of mixed oxides which are rich in thorium oxide

Info

Publication number
GB1012511A
GB1012511A GB2465862A GB2465862A GB1012511A GB 1012511 A GB1012511 A GB 1012511A GB 2465862 A GB2465862 A GB 2465862A GB 2465862 A GB2465862 A GB 2465862A GB 1012511 A GB1012511 A GB 1012511A
Authority
GB
United Kingdom
Prior art keywords
thorium
oxide
mixed oxides
suspension
oxalate
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
GB2465862A
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.)
Pechiney SA
Original Assignee
Pechiney SA
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
Priority claimed from FR866337A external-priority patent/FR1301365A/en
Priority claimed from FR866338A external-priority patent/FR1524952A/en
Application filed by Pechiney SA filed Critical Pechiney SA
Publication of GB1012511A publication Critical patent/GB1012511A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/51—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on compounds of actinides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14—Methods for preparing oxides or hydroxides in general
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F15/00—Compounds of thorium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Formation Of Insulating Films (AREA)
  • Catalysts (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

Thorium hydroxy-oxalate, having a composition from <FORM:1012511/C2/1> to <FORM:1012511/C2/2> , is obtained by treating thorium oxalate with aqueous ammonia solution and heating the resultant suspension to 65 DEG C.ALSO:Thorium oxide is prepared by treating thorium exalate with aqueous ammonia to obtain thorium hydroxy-oxalate, adding aqueous acid thereto at pH below 5 to form an aqueous suspension thereof and heating it at 80-100 DEG C. for a time sufficient to modify the crystalline shape, treating the crystals in aqueous suspension with a sufficient amount of ammonia solution to raise the pH of the suspension to 6-9, the suspension being agitated at above room temperature for a time sufficient to stabilize the pH within the above range, collecting the crystals, washing them with water, drying, and calcining them to thorium oxide. Thorium-rich mixed oxides are prepared by the addition of a solution of one or more water-soluble salts of at least one metal selected from any of Group II to VIII of Mendeleef's Periodic Table to the acidic aqueous suspension of modified thorium hydroxy-oxalate crystals. The metal content of the mixed oxides other than thorium comprises up to 10% by weight based on the thorium present. The products have a specific surface of 5 m.2g. to 20 m.2g. The preparations of thorium-rich mixed oxides containing thorium oxide together with uranium oxide; uranium oxide and calcium oxide; and cobalt oxide and calcium oxide are exemplified. Ternary mixed oxides containing thorium oxide, 0.1-1% by weight of one or more alkaline earth metal oxides, e.g. Ca, Mg, or Sr oxides, and 5% by weight uranium dioxide are also described and stated to be of use as nuclear fuels. Both thorium oxide and the thorium-rich mixed oxides may be used in ceramics and refractories.
GB2465862A 1961-06-28 1962-06-27 A process for the production of therium oxide and of mixed oxides which are rich in thorium oxide Expired GB1012511A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR866337A FR1301365A (en) 1961-06-28 1961-06-28 Process for obtaining thorium oxides
FR866338A FR1524952A (en) 1961-06-28 1961-06-28 Mixed oxide of thorium and uranium

Publications (1)

Publication Number Publication Date
GB1012511A true GB1012511A (en) 1965-12-08

Family

ID=26191250

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2465862A Expired GB1012511A (en) 1961-06-28 1962-06-27 A process for the production of therium oxide and of mixed oxides which are rich in thorium oxide

Country Status (3)

Country Link
ES (1) ES278684A1 (en)
GB (1) GB1012511A (en)
LU (1) LU41951A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384687A (en) * 1966-08-02 1968-05-21 Herbert P. Flack Microsphere forming process for aqueous salt soultions using dissolved ammonia in a dehydrating solvent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384687A (en) * 1966-08-02 1968-05-21 Herbert P. Flack Microsphere forming process for aqueous salt soultions using dissolved ammonia in a dehydrating solvent

Also Published As

Publication number Publication date
LU41951A1 (en) 1962-12-27
ES278684A1 (en) 1963-02-16

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