Binder and the use thereof for conditioning waste containing aluminium metal
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-028/34
G21F-009/30
C04B-040/00
G21F-009/36
C04B-111/00
출원번호
US-0774650
(2014-03-11)
등록번호
US-9711248
(2017-07-18)
우선권정보
FR-13 52233 (2013-03-13)
국제출원번호
PCT/EP2014/054712
(2014-03-11)
국제공개번호
WO2014/140018
(2014-09-18)
발명자
/ 주소
Cau Dit Coumes, Celine
Lambertin, David
Antonucci, Pascal
Charlot, Maryline
출원인 / 주소
COMMISSARIAT A L'ENERGIE ATOMIQUE AUX ENERGIES ALTERNATIVES
대리인 / 주소
Miles & Stockbridge P.C.
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
The present invention relates to a binder composition comprising (i) a phospho-magnesium cement; (ii) a boron source; (iii) a lithium salt; and (iv) water and to its preparation method. The present invention also relates to the use of such a binder for confining wastes and notably nuclear wastes con
The present invention relates to a binder composition comprising (i) a phospho-magnesium cement; (ii) a boron source; (iii) a lithium salt; and (iv) water and to its preparation method. The present invention also relates to the use of such a binder for confining wastes and notably nuclear wastes containing aluminum metal.
대표청구항▼
1. A binder composition comprising: (i) a phospho-magnesium cement;(ii) a boron source;(iii) a lithium salt; and(iv) water. 2. The composition according to claim 1, wherein said phospho-magnesium cement consists of a magnesium source in the oxidized state and of a phosphate source. 3. The compositio
1. A binder composition comprising: (i) a phospho-magnesium cement;(ii) a boron source;(iii) a lithium salt; and(iv) water. 2. The composition according to claim 1, wherein said phospho-magnesium cement consists of a magnesium source in the oxidized state and of a phosphate source. 3. The composition according to claim 2, wherein said magnesium source in the oxidized state is selected from the group consisting of magnesium oxide (MgO), magnesium hydroxide (Mg(OH)2), magnesium carbonate (MgCO3), magnesium hydroxycarbonate (4MgCO3.Mg(OH)2.5H2O) and one of their mixtures. 4. The composition according to claim 2, wherein said phosphate source is selected from the group consisting of phosphoric acid, aluminium phosphate, sodium phosphate, potassium phosphate, aluminium monohydrogenphosphate, sodium monohydrogenphosphate, potassium monohydrogenphosphate, aluminium dihydrogenphosphate, sodium dihydrogenphosphate, potassium dihydrogenphosphate and one of their mixtures. 5. The composition according to claim 1, wherein said boron source is selected from the group consisting of boric acid, metaboric acid, borax, a borate salt, a monohydrogenborate salt, a dihydrogenborate salt, a metaborate salt, a polyborate salt and one of their mixtures. 6. The composition according claim 1, wherein said lithium salt is selected from the group consisting of lithium nitrate, lithium carbonate, lithium sulfate, lithium phosphate, lithium triazole, lithium borate, lithium monohydrogenborate, lithium dihydrogenborate, lithium metaborate, lithium polyborate and one of their mixtures. 7. The composition according to claim 1, wherein in said composition: the molar ratio between the elements Mg and P is between 0.5 and 1.5;the molar ratio between the elements B and Mg is between 0.03 and 0.3;the molar ratio between the elements Li and Mg is between 0.02 and 0.12; andthe molar ratio between water and the element Mg is between 4 and 7. 8. The composition according to claim 1, wherein said composition comprises a filler. 9. The composition according to claim 8, wherein said filler a siliceous filler. 10. The composition according to claim 1, wherein said composition further comprises sand and optionally granulates. 11. The composition according to claim 7, wherein the molar ratio between the elements Mg and P is between 0.8 and 1. 12. The composition according to claim 7, wherein the molar ratio between the elements B and Mg is between 0.05 and 0.15. 13. The composition according to claim 7, wherein the molar ratio between the elements Li and Mg is between 0.05 and 0.10. 14. The composition according to claim 7, wherein the molar ratio between water and the element Mg is between 5 and 6. 15. The composition according to claim 9, wherein said siliceous filler is an alumino-siliceous filler. 16. The composition according to claim 15, wherein said alumino-siliceous filler is a filler, either natural or not, stemming from pozzolan, illite, opaline, cherts, volcanic ashes, pumice stone, schistous clays, calcined diatomaceous earths, baked clay, silica fume or fly ash. 17. A binder composition, comprising: (i) a phospho-magnesium cement;(ii) a boron source;(iii) a lithium salt; and(iv) water, wherein said binder composition is selected from among a grout composition formed with (i) a phospho-magnesium cement formed with magnesium oxide calcined between 1,000 and 1,500° C., with a specific surface area of less than 1 m2/g and with potassium dihydrogenphosphate;(ii) boric acid;(iii) lithium nitrate;(iv) a filler consisting of alumino-siliceous fly ash; and(v) water;a mortar composition formed with (i) a phospho-magnesium cement formed with magnesium oxide calcined between 1,000 and 1,500° C., with a specific surface area of less than 1 m2/g and with potassium dihydrogenphosphate;(ii) boric acid;(iii) lithium nitrate;(iv) a filler consisting of alumino-siliceous fly ash;(v) water; and(vi) siliceous sand with a grain size of less than 2 mm; anda concrete composition formed with: (i) a phospho-magnesium cement formed with magnesium oxide calcined between 1,000 and 1,500° C., with a specific surface area of less than 1 m2/g and with potassium dihydrogenphosphate;(ii) boric acid;(iii) lithium nitrate;(iv) a filler consisting of alumino-siliceous fly ash;(v) water;(vi) siliceous sand with a grain size of less than 2 mm; and(vii) a siliceous granulate. 18. A method for preparing a binder composition, comprising the steps of: a) preparing a mixture comprising water, a boron source, a lithium salt, phosphorus-magnesium cement, and a filler; andb) kneading the obtained mixture subsequently to said step (a). 19. The method according to claim 18, wherein sand and optionally granulates are added during said step (a), subsequent to said step (a) or subsequent to said step (b). 20. The method of claim 18, further comprising confining nuclear wastes containing aluminium metal. 21. Packages of wastes confined in a binder with a composition comprising water, a boron source, a lithium salt, and phosphorus-magnesium cement, and conditioned in barrels or caissons.
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이 특허에 인용된 특허 (13)
Guillou Bruno Le,FRX ; Orange Giiies,FRX, Binding phase for phosphomagnesium cements and their use for the preparation of mortars.
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