EP0124825A2 - Einkapseln von radioaktiven Abfällen - Google Patents

Einkapseln von radioaktiven Abfällen Download PDF

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Publication number
EP0124825A2
EP0124825A2 EP84104619A EP84104619A EP0124825A2 EP 0124825 A2 EP0124825 A2 EP 0124825A2 EP 84104619 A EP84104619 A EP 84104619A EP 84104619 A EP84104619 A EP 84104619A EP 0124825 A2 EP0124825 A2 EP 0124825A2
Authority
EP
European Patent Office
Prior art keywords
water
emulsion
radioactive waste
resin
monomer
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.)
Withdrawn
Application number
EP84104619A
Other languages
English (en)
French (fr)
Other versions
EP0124825A3 (de
Inventor
Pierre Albert Syncrete S.A. Crouzet
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.)
WR Grace and Co
Original Assignee
WR Grace and Co
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 WR Grace and Co filed Critical WR Grace and Co
Publication of EP0124825A2 publication Critical patent/EP0124825A2/de
Publication of EP0124825A3 publication Critical patent/EP0124825A3/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • G21F9/301—Processing by fixation in stable solid media
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/16—Processing by fixation in stable solid media
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/16—Processing by fixation in stable solid media
    • G21F9/162—Processing by fixation in stable solid media in an inorganic matrix, e.g. clays, zeolites
    • G21F9/165—Cement or cement-like matrix
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • G21F9/301—Processing by fixation in stable solid media
    • G21F9/302—Processing by fixation in stable solid media in an inorganic matrix
    • G21F9/304—Cement or cement-like matrix

Definitions

  • radioactive waste includes, in addition to the materials containing radioactive products and which are, for example, in the form of beads of ion exchange resins charged with rare, radioactive chemicals mixed with water (approximately 50%) practically in saturation, also radioactive sludge containing for example uranium fluorates or fluorides.
  • Radioactive waste preferably first in the form of small beads or pearls respectively, with glass or synthetic cement.
  • the coating procedure is as follows: Boric acid, sand and lithium hydroxide are added to the radioactive waste, preferably in the form of beads or pearls. This mass is then heated to more than 1000 ° C. before allowing it to cool in the form of cylindrical bodies. These bodies are finally enclosed in metal containers.
  • this method is not with certainty safe at the moment or water could penetrate in one way or another in the vitrified mass.
  • the problem which arises in connection with the invention is the blocking, inside a concrete, of balls of ion exchange resins charged with rare chemicals, radioactive and mixed with water (about 50%) almost in saturation.
  • the present invention relates to a new type of coating of radioactive waste.
  • the coating process according to the invention is characterized in that a mixture is produced comprising the radioactive waste in saturation in their storage water, a resin and a monomer to form an emulsion with the radioactive waste, their water, the resin and the monomer and that a hydraulic binder is added to this emulsion to make a concrete.
  • the resin used is preferably an unsaturated polyester.
  • the coating process according to the invention therefore consists in fact of producing an emulsion, for example an emulsion according to American patents no. 4,115,336, 4,204,988 and Australians 513,486 and 515,778 by using the storage water for the beads, then with this emulsion, still according to the process, to make a concrete.
  • the micro-beads Only the free water from storage is used for the emulsion, the micro-beads remaining saturated. When the cement is added to the mixture, the emulsion is destroyed. The polymer coats the microbeads and their internal water, while the water is absorbed by the cement. The coated beads can no longer lose water and, since in the saturated state, no longer take up either.
  • the total weight of this mixture is 1,618 kg but in fact, the true emulsion is only 650 kg since in the 600 kg of the micro-ball mixture, there is in fact only 150 kg of water free usable to create the emulsion (Decomposition of 600 kg: 300 kg solid beads, 150 kg of internal water, 150 kg of free water.)
  • Aggregates can be added to the concrete thus produced, such as for example baryte sulfate or colemanite, which due to their high molecular weight can also be used for blocking certain radiations.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Paints Or Removers (AREA)
  • Fertilizers (AREA)
EP84104619A 1983-04-29 1984-04-25 Einkapseln von radioaktiven Abfällen Withdrawn EP0124825A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2329/83 1983-04-29
CH2329/83A CH654436A5 (fr) 1983-04-29 1983-04-29 Procede d'enrobage de dechets radioactifs.

Publications (2)

Publication Number Publication Date
EP0124825A2 true EP0124825A2 (de) 1984-11-14
EP0124825A3 EP0124825A3 (de) 1986-03-26

Family

ID=4231268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104619A Withdrawn EP0124825A3 (de) 1983-04-29 1984-04-25 Einkapseln von radioaktiven Abfällen

Country Status (12)

Country Link
EP (1) EP0124825A3 (de)
JP (1) JPS6040998A (de)
CA (1) CA1226380A (de)
CH (1) CH654436A5 (de)
DE (1) DE3415433A1 (de)
FR (1) FR2545258B1 (de)
GB (1) GB2140194B (de)
IL (1) IL71682A (de)
IT (1) IT1213161B (de)
NL (1) NL8401345A (de)
SE (1) SE8402303L (de)
ZA (1) ZA843148B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607957A1 (fr) * 1986-12-05 1988-06-10 Commissariat Energie Atomique Bloc contenant des dechets en vue de leur stockage et procede de realisation d'un tel bloc
FR2678761A1 (fr) * 1991-07-03 1993-01-08 Commissariat Energie Atomique Bloc contenant des resines echangeuses d'ions contaminees et son procede de preparation.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6266198A (ja) * 1985-09-19 1987-03-25 動力炉・核燃料開発事業団 放射性廃溶媒の固化処理方法
FR3002866B1 (fr) * 2013-03-08 2018-02-02 Noe Jacquier Energie Dispositif et procede de desamiantage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2644472A1 (de) * 1975-10-03 1977-04-14 Dow Chemical Co Verfahren zum einkapseln von radioaktiven abfaellen
FR2361724A1 (fr) * 1976-08-12 1978-03-10 Commissariat Energie Atomique Procede de stockage de resines echangeuses d'ions contaminees
FR2366234A1 (fr) * 1976-04-27 1978-04-28 Crouzet Pierre Procede de fabrication d'un produit a base d'une emulsion et d'un agent de prise, et produit obtenu par application de ce procede
DE2717656A1 (de) * 1977-04-21 1978-10-26 Nukem Gmbh Verfahren zur herstellung auslaugfester und salzlaugebestaendiger bloecke aus zement und radioaktiven abfaellen
WO1980000047A1 (en) * 1978-06-08 1980-01-10 Bp Chem Int Ltd Encapsulating wastes
FR2505539A1 (fr) * 1981-05-11 1982-11-12 Snial Resine Poliestere Spa Procede de solidification des dechets radio-actifs contenus dans des resines echangeuses d'ions, articles solides ainsi obtenus et composition contenant une matiere radioactive a base de resines echangeuses d'ions

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2644472A1 (de) * 1975-10-03 1977-04-14 Dow Chemical Co Verfahren zum einkapseln von radioaktiven abfaellen
FR2366234A1 (fr) * 1976-04-27 1978-04-28 Crouzet Pierre Procede de fabrication d'un produit a base d'une emulsion et d'un agent de prise, et produit obtenu par application de ce procede
FR2361724A1 (fr) * 1976-08-12 1978-03-10 Commissariat Energie Atomique Procede de stockage de resines echangeuses d'ions contaminees
DE2717656A1 (de) * 1977-04-21 1978-10-26 Nukem Gmbh Verfahren zur herstellung auslaugfester und salzlaugebestaendiger bloecke aus zement und radioaktiven abfaellen
WO1980000047A1 (en) * 1978-06-08 1980-01-10 Bp Chem Int Ltd Encapsulating wastes
FR2505539A1 (fr) * 1981-05-11 1982-11-12 Snial Resine Poliestere Spa Procede de solidification des dechets radio-actifs contenus dans des resines echangeuses d'ions, articles solides ainsi obtenus et composition contenant une matiere radioactive a base de resines echangeuses d'ions

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607957A1 (fr) * 1986-12-05 1988-06-10 Commissariat Energie Atomique Bloc contenant des dechets en vue de leur stockage et procede de realisation d'un tel bloc
EP0274927A1 (de) * 1986-12-05 1988-07-20 Commissariat à l'Energie Atomique Block mit Abfällen zur Endlagerung derselben und Verfahren zur Herstellung eines solchen Blocks
US4839102A (en) * 1986-12-05 1989-06-13 Commissariat A L'energie Atomique Block for containing and storing radioactive waste and process for producing such a block
FR2678761A1 (fr) * 1991-07-03 1993-01-08 Commissariat Energie Atomique Bloc contenant des resines echangeuses d'ions contaminees et son procede de preparation.
EP0522931A1 (de) * 1991-07-03 1993-01-13 Commissariat A L'energie Atomique Block kontaminierte Ionenaustauschharze enthaltend und Herstellung davon

Also Published As

Publication number Publication date
DE3415433A1 (de) 1984-10-31
IT1213161B (it) 1989-12-14
IL71682A (en) 1987-09-16
FR2545258B1 (fr) 1988-10-14
FR2545258A1 (fr) 1984-11-02
GB2140194A (en) 1984-11-21
GB8410843D0 (en) 1984-06-06
GB2140194B (en) 1987-05-07
SE8402303D0 (sv) 1984-04-26
NL8401345A (nl) 1984-11-16
EP0124825A3 (de) 1986-03-26
CA1226380A (en) 1987-09-01
ZA843148B (en) 1984-11-28
SE8402303L (sv) 1984-10-30
JPS6040998A (ja) 1985-03-04
CH654436A5 (fr) 1986-02-14
IT8420746A0 (it) 1984-04-30

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Inventor name: CROUZET, PIERRE ALBERT SYNCRETE S.A.

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Owner name: SYNCRETE S.A.

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Effective date: 19860915

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Owner name: W.R. GRACE & CO.

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Effective date: 19880415

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18D Application deemed to be withdrawn

Effective date: 19880826

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Inventor name: CROUZET, PIERRE ALBERTSYNCRETE S.A.