ES328255A1 - 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
ES328255A1
ES328255A1 ES328255A ES328255A ES328255A1 ES 328255 A1 ES328255 A1 ES 328255A1 ES 328255 A ES328255 A ES 328255A ES 328255 A ES328255 A ES 328255A ES 328255 A1 ES328255 A1 ES 328255A1
Authority
ES
Spain
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
ES328255A
Other languages
Spanish (es)
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 ES328255A1 publication Critical patent/ES328255A1/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.
ES328255A 1965-06-23 1966-06-22 Method of preparation of pollucite and its application to the production of radioactive sources Expired ES328255A1 (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
ES328255A1 true ES328255A1 (en) 1968-01-01

Family

ID=26164292

Family Applications (1)

Application Number Title Priority Date Filing Date
ES328255A Expired ES328255A1 (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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (1)

* 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE1567418B2 (en) 1972-05-04
SE300944B (en) 1968-05-13
BE682573A (en) 1966-11-14
CH470323A (en) 1969-03-31
LU51374A1 (en) 1966-08-22
GB1119768A (en) 1968-07-10
IL25985A (en) 1970-02-19
NL6608566A (en) 1966-12-27
DE1567418A1 (en) 1970-08-13

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