GB1119768A - Method of preparation of pollucite and its application to the production of radioactive sources - Google Patents

Method of preparation of pollucite and its application to the production of radioactive sources

Info

Publication number
GB1119768A
GB1119768A GB2794266A GB2794266A GB1119768A GB 1119768 A GB1119768 A GB 1119768A GB 2794266 A GB2794266 A GB 2794266A GB 2794266 A GB2794266 A GB 2794266A GB 1119768 A GB1119768 A GB 1119768A
Authority
GB
United Kingdom
Prior art keywords
pollucite
powder
sintering
preparation
production
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
GB2794266A
Inventor
Andre Olombel
Cecile Perebaskine
Albian Le Val D
Andre Raggenbass
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 FR21960A external-priority patent/FR1478340A/en
Priority claimed from FR21959A external-priority patent/FR1478339A/en
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1119768A publication Critical patent/GB1119768A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
    • C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
    • C01B33/40—Clays
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
    • C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
    • C01B33/42—Micas ; Interstratified clay-mica products
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
    • C01B33/46—Amorphous silicates, e.g. so-called "amorphous zeolites"
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
    • G21G4/00—Radioactive sources
    • G21G4/04—Radioactive sources other than neutron sources

Abstract

Crystalline pollucite, Cs2O, Al2O3, 4SiO2, H2O is prepared by mixing colloidal aqueous silica with aqueous caesium and aluminium nitrates, evaporating to dryness and heating to below 1000 DEG C. to decompose remaining nitrates and form an amorphous powder which is then compacted under a pressure of 2.5 tonnes per cm.2 and sintered at 1600 DEG C. In a modification, the calcination is at a temperature below 600 DEG C. (instead of 1000 DEG C.) and the sintering in two constant temperature stages at 970 DEG C. and 1200 DEG C. respectively. In this case, the calcined powder may be activated in a water vapour atmosphere at 100 DEG C. for 15 to 30 minutes. The powder may be ground to a mean particle size of 10m before compacting and sintering.
GB2794266A 1965-06-23 1966-06-22 Method of preparation of pollucite and its application to the production of radioactive sources Expired GB1119768A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR21960A FR1478340A (en) 1965-06-23 1965-06-23 Process for preparing sintered pollucite
FR21959A FR1478339A (en) 1965-06-23 1965-06-23 Sintered pollucite ceramic radioactive source

Publications (1)

Publication Number Publication Date
GB1119768A true GB1119768A (en) 1968-07-10

Family

ID=26164292

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2794266A Expired GB1119768A (en) 1965-06-23 1966-06-22 Method of preparation of pollucite and its application to the production of radioactive sources

Country Status (9)

Country Link
BE (1) BE682573A (en)
CH (1) CH470323A (en)
DE (1) DE1567418B2 (en)
ES (1) ES328255A1 (en)
GB (1) GB1119768A (en)
IL (1) IL25985A (en)
LU (1) LU51374A1 (en)
NL (1) NL6608566A (en)
SE (1) SE300944B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04367510A (en) * 1990-12-19 1992-12-18 Tosoh Corp Pollucite powder having low thermal expansion coefficient and its synthesis
CN109704351A (en) * 2019-03-05 2019-05-03 西南科技大学 A kind of low temperature of pollucite exempts to calcine preparation method

Also Published As

Publication number Publication date
SE300944B (en) 1968-05-13
BE682573A (en) 1966-11-14
IL25985A (en) 1970-02-19
NL6608566A (en) 1966-12-27
DE1567418B2 (en) 1972-05-04
CH470323A (en) 1969-03-31
ES328255A1 (en) 1968-01-01
DE1567418A1 (en) 1970-08-13
LU51374A1 (en) 1966-08-22

Similar Documents

Publication Publication Date Title
GB1342893A (en) Production of ceria
GB1119768A (en) Method of preparation of pollucite and its application to the production of radioactive sources
GB953636A (en) Process for preparing a polishing compound
GB1081730A (en) Ceramic materials
GB995930A (en) Method of freeze drying
US3340202A (en) Sintered pollucite radioactive source and method of production
GB1069455A (en) Process for the preparation of porous alumina
GB947492A (en) Improvements in or relating to a multiport extrusion die
GB967877A (en) Method of producing acrylonitrile and methacrylonitrile
ES319008A1 (en) Procedure for the manufacture of a radioactive source. (Machine-translation by Google Translate, not legally binding)
GB1168106A (en) Improvements in or relating to Granular Materials containing Anti-Caking Powders
CA956082A (en) Recovery of ammonium sulphate from aqueous solutions contaminated by organic substances
GB884577A (en) Improvements in methods of preparing sintered beryllium oxide products
JPS52133499A (en) Solidifying treatment for radioactive waste liquid with high level
GB1096314A (en) High density sintered ceramics
GB1028221A (en) Improvements in or relating to neutron absorber material
GB876640A (en) Improvements in or relating to the production of sintered compacts of beryllia
GB1138578A (en) Heat source material
GB1086247A (en) Improvements in dolomite sinter, and a process for its production
CA620035A (en) Method of reducing aqueous radioactive nuclear wastes to solid form
CA720840A (en) Process for converting ethylenically unsaturated hydrocarbons to carbonylic compounds
GB1114640A (en) Improvements in or relating to a method of impregnating sintered matrixes for electrodes
GB884806A (en) Improved method of producing alumina
ES356811A1 (en) Process for preparing sintered pellets of ceramic materials to be used as nuclear fuels and products obtained by the process
Zavadskaya et al. Calorimetric Study of Aluminate-Silicate Gel-Forming Solutions