SE412658B - SET IN CEMENT BEDDING ACID OR BORATE-RADIOACTIVE WASTE - Google Patents
SET IN CEMENT BEDDING ACID OR BORATE-RADIOACTIVE WASTEInfo
- Publication number
- SE412658B SE412658B SE7707770A SE7707770A SE412658B SE 412658 B SE412658 B SE 412658B SE 7707770 A SE7707770 A SE 7707770A SE 7707770 A SE7707770 A SE 7707770A SE 412658 B SE412658 B SE 412658B
- Authority
- SE
- Sweden
- Prior art keywords
- cement
- radioactive waste
- weight
- borate
- parts
- Prior art date
Links
- 239000004568 cement Substances 0.000 title claims description 16
- 239000002901 radioactive waste Substances 0.000 title claims description 10
- 239000002253 acid Substances 0.000 title description 2
- 239000000203 mixture Substances 0.000 claims description 8
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004327 boric acid Substances 0.000 claims description 6
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 5
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 3
- 239000011698 potassium fluoride Substances 0.000 claims description 3
- 235000003270 potassium fluoride Nutrition 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229910001515 alkali metal fluoride Inorganic materials 0.000 claims description 2
- 229910001615 alkaline earth metal halide Inorganic materials 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- -1 hydroxyl compound Chemical class 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005342 ion exchange Methods 0.000 description 5
- 238000004078 waterproofing Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 description 2
- 150000001642 boronic acid derivatives Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910001618 alkaline earth metal fluoride Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical class [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
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
- G21F9/302—Processing by fixation in stable solid media in an inorganic matrix
- G21F9/304—Cement or cement-like matrix
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
15 25 1707770-9 2 med synnerligen god hâllfasthet. Enligt uppfinningen åstadkommas detta genom att avfallet före blandningen med cementen behandlas med ett ämne, som neutra- lieerar den retarderande verkan, som borsyra och borater har på. cementens stelnsnde. 170 25707770-9 2 with extremely good strength. According to the invention, this is achieved by treating the waste before mixing with the cement with a substance which neutralises the retarding effect of boric acid and borates. cement setting.
Närmare bestämt avser den föreliggande uppfinningen ett sätt att i cement bädda in borsyra- eller borathaltigt radioaktivt avfall, varvid avfallet blandas med cement och blandningen bringas att stelna i en behållare, t e: en betongkokill, som kännetecknas av att det radioaktiva avfallet före bland- ningen med cementen behandlas med ett ämne 'som med borsyran respektiveboratet ger en 'i vatten svårlöslig eller komplexbunden förening. och består av kalcium- klorid eller annan, jordalkalimetallhalogenid, av kaliumfluorid eller annan galkalimetallfluorid såsom natrizmfluorid eller av en flervärd organisk hydroxyl- förening såsom polyvinylalkohol och mannit. Bland flervärda organiska hydroxyl- föreningar föredragee specielltsådana med fler än tre hydroxylgrupper. liamet tillsättes företrädesvis i fast form, om det radioaktiva avfallet, såsom är normalt för jonbytarmassor och indunstarkoncentrat, är vattenhaltigt.More particularly, the present invention relates to a method of embedding boric acid or borate-containing radioactive waste in cement, wherein the waste is mixed with cement and the mixture is made to solidify in a container, te: a concrete mold, which is characterized in that the radioactive waste before mixing with the cement is treated with a substance 'which with the boric acid and the borate, respectively, gives a' water-insoluble or complex-bound compound. and consists of calcium chloride or other, alkaline earth metal halide, of potassium fluoride or other alkaline earth metal fluoride such as sodium fluoride or of a polyhydric organic hydroxyl compound such as polyvinyl alcohol and mannit. Among polyhydric organic hydroxyl compounds, those with more than three hydroxyl groups are especially preferred. The laminate is preferably added in solid form if the radioactive waste, as is normal for ion exchange compositions and evaporator concentrates, is aqueous.
Den tillsatta. mängden av ämnet uppgår lämpligen till minut en med borsyrs- eller boratmängden ungefär stökiometrisk mängd. överskott på upp till i varje fall 25 9š har ingen negativ inverkan.The appointed. the amount of the substance suitably amounts to minute one with the amount of boric oxygen or borate approximately stoichiometric. surplus of up to at least 25 9š has no negative impact.
Av de nämnda ämnena ger jordalkalimetallklorider vid behandlingen av det bor- syra- eller borathaltiga radioaktiva avfallet svår-lösliga borater, alkalimetall- fluorider ger svårlösliga alkalimetallfluoborater och de fler-värda hydroxyl- föreningarna ger didiolkomplexer.Of the substances mentioned, alkaline earth metal chlorides in the treatment of the boric acid or borate-containing radioactive waste give sparingly soluble borates, alkali metal fluorides give sparingly soluble alkali metal fluoroborates and the polyhydric hydroxyl compounds give didiol complexes.
Före blandningen av det med ämnet behandlade radioaktiva avfallet med cement justeras pE-värdet vid användningen av jordalkalimetallklorider till omlnfing 11 och i övriga fall till omkring 8 eller däröver.Prior to mixing the radioactive waste treated with the substance with cement, the pE value in the use of alkaline earth metal chlorides is adjusted to around 11 and in other cases to about 8 or more.
I blandningen av radioaktivt avfall och cement inkorporeras lämpligen på. känt sätt ett vattsntätande medel, som hindrar vattentransport inom det stelnsde cementblocket. Exempel på. sådana medel är vattenglas, polymera material med förmåga att blockera vatteninträngzzing till det radioaktiva avfallet samt metalltvålar av högre fettsyror. längden vattentätande medel uppgår lämpligen till 1-20 viktsdelar per 100 viktsdelar cement. 10 15 25 '7707770-9 Uppfinningen skall beslmivas ytterligare i nedanstående exempel.The mixture of radioactive waste and cement is suitably incorporated on. known method a waterproofing agent which prevents water transport within the solidified cement block. Examples of. such agents are water glass, polymeric materials capable of blocking water penetration into the radioactive waste, and metal soaps of higher fatty acids. the length of waterproofing agent suitably amounts to 1-20 parts by weight per 100 parts by weight of cement. The invention will be further elucidated in the following examples.
Ehcemgl 1.Ehcemgl 1.
En jonbytarmassa av styrendivinvlbensentyp innehållande en blandning av korn med sulfonsyregwnipper och korn med kvartära amoniumgrxzpper, 'vilken an- vänts i primärloretsen i en tryckvattenreaktor och därvid absorberat box-syra. och natriumborater så att halten av dessa räknat som borsyra uppgår till 12 viktsprooent och dessutom radioaktiva ämnen, innehåller 35 viktsprooent torr- substans och 65 viktsprocent vatten. Till 1000 viktsdelar av denna jonbytar- massa sättas 125 viktsdelar pulverformig kaloiumklorid. Efter blandning av komponenterna nöjes pil-värdet till omkring.11 genom tillsats av natriumhydroxid.A styrene-divinylbenzene-type ion exchange mass containing a mixture of granules with sulfonic acid groups and grains with quaternary ammonium groups, which is used in the primary chlorine etch in a pressurized water reactor and thereby absorbed box acid. and sodium borates so that their content, calculated as boric acid, amounts to 12% by weight and, in addition, radioactive substances, contain 35% by weight of dry matter and 65% by weight of water. To 1000 parts by weight of this ion exchange mass is added 125 parts by weight of powdered potassium chloride. After mixing the components, the arrow value is satisfied to about 11 by the addition of sodium hydroxide.
Den så. erhållna. blandningen som omfattar omkring 1125 viktsdelar blandas med. 1600 viktsdelar cement och vidare med 32 viktsdeler vattenglas bestående ev lika delar silikat och vatten som vattentätande tillsats till oementen. Efter något dygn är massan stelnad och förblir sedan intakt. ' ggyel 2 1000 viktsdelar av en Jonbytarmassa av same slag som i Exempel 1 försättes med 460 viktsdelar kaïlitmfluoridpulver, varvid pH-värdet blir omkring 8. Efter blandning av komponenterna tillsättes till den erhållna blandningen 1300 vikte- delar cement och videre 26 viktsdelar av ett vattentätande medium bestående av sin: er (ingenjören-inse Per mgvalz, sverige). Liksom 1 föregående fall erhålles en stelnad produkt som är intakt. hångel 2 1000 viktsdelar av en jonbytarmassa av same slag som i Exempel 1 försättes med 820 viktsdslar mannit i pulverform. pil-värdet justeras med natriumbydroxid till 8. Blandningelx, som omfattar omkring 1820 viktsdelar blandas med 1000 viktsdslar cement och vidare med 20 viktsdelar vattenglas bestående av lika delar siliket och vatten. Liksom i föregående fall erhålles en stelnad produkt som är intakt.It saw. obtained. the mixture comprising about 1125 parts by weight is mixed with. 1600 parts by weight of cement and further with 32 parts by weight of water glass consisting of possibly equal parts of silicate and water as a waterproofing additive to the elements. After a few days, the mass solidifies and then remains intact. ggyel 2 1000 parts by weight of an ion exchange mass of the same kind as in Example 1 is added with 460 parts by weight of potassium fluoride powder, the pH value being about 8. After mixing the components, 1300 parts by weight of cement and a further 26 parts by weight of a waterproofing are added to the resulting mixture. medium consisting of sin: er (engineer-inse Per mgvalz, sweden). As in the previous case, a solidified product is obtained which is intact. hångel 2 1000 parts by weight of an ion exchange mass of the same kind as in Example 1 is added with 820 parts by weight of mannit in powder form. The arrow value is adjusted with sodium hydroxide to 8. Mixture elx, which comprises about 1820 parts by weight, is mixed with 1000 parts by weight of cement and further with 20 parts by weight of water glass consisting of equal parts of silica and water. As in the previous case, a solidified product is obtained which is intact.
Claims (1)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7707770A SE412658B (en) | 1977-07-05 | 1977-07-05 | SET IN CEMENT BEDDING ACID OR BORATE-RADIOACTIVE WASTE |
| CH616078A CH638922A5 (en) | 1977-07-05 | 1978-06-06 | Method for embedding in cement radioactive waste containing boric acid or borate |
| DE2827030A DE2827030C2 (en) | 1977-07-05 | 1978-06-20 | Method for embedding radioactive waste containing boric acid or borate in cement |
| FI781993A FI66095C (en) | 1977-07-05 | 1978-06-21 | SAETT ATT I CEMENT BAEDDA IN BORSYRA ELLER BORATHALTIGT RADIOACTIVE AVFALL |
| JP8082178A JPS5434000A (en) | 1977-07-05 | 1978-07-03 | Method of sealing up radioactive waste containing boric acid or borate in cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7707770A SE412658B (en) | 1977-07-05 | 1977-07-05 | SET IN CEMENT BEDDING ACID OR BORATE-RADIOACTIVE WASTE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7707770L SE7707770L (en) | 1979-01-06 |
| SE412658B true SE412658B (en) | 1980-03-10 |
Family
ID=20331786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7707770A SE412658B (en) | 1977-07-05 | 1977-07-05 | SET IN CEMENT BEDDING ACID OR BORATE-RADIOACTIVE WASTE |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5434000A (en) |
| CH (1) | CH638922A5 (en) |
| DE (1) | DE2827030C2 (en) |
| FI (1) | FI66095C (en) |
| SE (1) | SE412658B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4416810A (en) * | 1981-07-30 | 1983-11-22 | Noakes John E | Disposal of radioactive aromatic liquid wastes |
| US4504317A (en) * | 1983-03-07 | 1985-03-12 | Westinghouse Electric Corp. | Encapsulation of boric acid slurries |
| US4620947A (en) * | 1983-10-17 | 1986-11-04 | Chem-Nuclear Systems, Inc. | Solidification of aqueous radioactive waste using insoluble compounds of magnesium oxide |
| FR2565851B1 (en) * | 1984-06-14 | 1994-02-11 | Innovations Meca Alimentaires | MECHANICAL SEPARATION HEAD, ESPECIALLY FOR THE TREATMENT OF CRUSHED CARCASES AND MACHINE EQUIPPED THEREWITH |
| JPS6118898A (en) * | 1984-07-06 | 1986-01-27 | 株式会社日立製作所 | Radioactive waste solidified body and manufacture thereof |
| JPS61239197A (en) * | 1985-04-17 | 1986-10-24 | ウエスチングハウス エレクトリック コ−ポレ−ション | Radioacitve waste containing fixed cesium and fixing method thereof |
| US5143653A (en) * | 1987-05-15 | 1992-09-01 | Societe Anonyme: Societe Generale Pour Les Techniques Nouvelles-Sgn | Process for immobilizing radioactive ion exchange resins by a hydraulic binder |
| FR2615315B1 (en) * | 1987-05-15 | 1989-08-25 | Sgn Soc Gen Tech Nouvelle | METHOD FOR IMMOBILIZING RESINS EXCHANGING RADIOACTIVE IONS BY A HYDRAULIC BINDER |
| FR3080112B1 (en) * | 2018-04-17 | 2020-05-01 | Onet Technologies Cn | PROCESS FOR CONDITIONING BORATE WASTE BY CEMENT |
| FI129112B (en) * | 2018-12-16 | 2021-07-15 | Fortum Power & Heat Oy | Method for treating and solidifying liquid waste |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2553569C2 (en) * | 1975-11-28 | 1985-09-12 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Process for the solidification of radioactive aqueous waste materials by spray calcination and subsequent embedding in a matrix made of glass or glass ceramic |
| DE2603116C2 (en) * | 1976-01-28 | 1983-01-27 | Nukem Gmbh, 6450 Hanau | Process for the solidification of radioactive borate-containing aqueous solutions and suspensions |
-
1977
- 1977-07-05 SE SE7707770A patent/SE412658B/en not_active IP Right Cessation
-
1978
- 1978-06-06 CH CH616078A patent/CH638922A5/en not_active IP Right Cessation
- 1978-06-20 DE DE2827030A patent/DE2827030C2/en not_active Expired
- 1978-06-21 FI FI781993A patent/FI66095C/en not_active IP Right Cessation
- 1978-07-03 JP JP8082178A patent/JPS5434000A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2827030C2 (en) | 1984-01-26 |
| FI66095C (en) | 1984-08-10 |
| SE7707770L (en) | 1979-01-06 |
| FI66095B (en) | 1984-04-30 |
| JPS5434000A (en) | 1979-03-13 |
| CH638922A5 (en) | 1983-10-14 |
| DE2827030A1 (en) | 1979-01-11 |
| FI781993A7 (en) | 1979-01-06 |
| JPS6333118B2 (en) | 1988-07-04 |
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