RU98120684A - METHOD FOR MANUFACTURING TUBULATED TABLET FUEL FOR HEAT FUEL ELEMENTS AND DEVICE FOR ITS IMPLEMENTATION - Google Patents
METHOD FOR MANUFACTURING TUBULATED TABLET FUEL FOR HEAT FUEL ELEMENTS AND DEVICE FOR ITS IMPLEMENTATIONInfo
- Publication number
- RU98120684A RU98120684A RU98120684/06A RU98120684A RU98120684A RU 98120684 A RU98120684 A RU 98120684A RU 98120684/06 A RU98120684/06 A RU 98120684/06A RU 98120684 A RU98120684 A RU 98120684A RU 98120684 A RU98120684 A RU 98120684A
- Authority
- RU
- Russia
- Prior art keywords
- tablets
- unit
- tablet
- powder
- sintering
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims 16
- 239000000446 fuel Substances 0.000 title claims 6
- 238000004519 manufacturing process Methods 0.000 title claims 4
- 239000000843 powder Substances 0.000 claims 18
- 238000005245 sintering Methods 0.000 claims 10
- OOAWCECZEHPMBX-UHFFFAOYSA-N oxygen(2-);uranium(4+) Chemical compound [O-2].[O-2].[U+4] OOAWCECZEHPMBX-UHFFFAOYSA-N 0.000 claims 9
- FCTBKIHDJGHPPO-UHFFFAOYSA-N uranium dioxide Inorganic materials O=[U]=O FCTBKIHDJGHPPO-UHFFFAOYSA-N 0.000 claims 9
- WZECUPJJEIXUKY-UHFFFAOYSA-N [O-2].[O-2].[O-2].[U+6] Chemical compound [O-2].[O-2].[O-2].[U+6] WZECUPJJEIXUKY-UHFFFAOYSA-N 0.000 claims 8
- 229910000439 uranium oxide Inorganic materials 0.000 claims 8
- 239000011230 binding agent Substances 0.000 claims 7
- 238000002156 mixing Methods 0.000 claims 7
- ZAASRHQPRFFWCS-UHFFFAOYSA-P diazanium;oxygen(2-);uranium Chemical compound [NH4+].[NH4+].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[U].[U] ZAASRHQPRFFWCS-UHFFFAOYSA-P 0.000 claims 6
- 239000011159 matrix material Substances 0.000 claims 6
- 238000001238 wet grinding Methods 0.000 claims 6
- 230000002950 deficient Effects 0.000 claims 5
- 229910003460 diamond Inorganic materials 0.000 claims 5
- 239000010432 diamond Substances 0.000 claims 5
- 238000000227 grinding Methods 0.000 claims 5
- 238000003825 pressing Methods 0.000 claims 5
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims 5
- 238000001035 drying Methods 0.000 claims 4
- 239000007789 gas Substances 0.000 claims 3
- 239000011261 inert gas Substances 0.000 claims 3
- 239000000203 mixture Substances 0.000 claims 3
- 238000003860 storage Methods 0.000 claims 3
- 238000009475 tablet pressing Methods 0.000 claims 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 239000002706 dry binder Substances 0.000 claims 2
- 239000000314 lubricant Substances 0.000 claims 2
- 238000003032 molecular docking Methods 0.000 claims 2
- 230000001590 oxidative effect Effects 0.000 claims 2
- 239000011701 zinc Substances 0.000 claims 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 206010052428 Wound Diseases 0.000 claims 1
- 208000027418 Wounds and injury Diseases 0.000 claims 1
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- 239000012298 atmosphere Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- 238000005056 compaction Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 238000011068 loading method Methods 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 239000012299 nitrogen atmosphere Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 238000005498 polishing Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- JFALSRSLKYAFGM-OIOBTWANSA-N uranium-235 Chemical compound [235U] JFALSRSLKYAFGM-OIOBTWANSA-N 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
Claims (16)
L=L1+H,
где L - ширина алмазной поверхности;
L1 - ширина ведущего круга;
H - высота таблетки, а в агрегате шлифования поверхности таблеток верхнюю и нижнюю опоры устанавливают по формуле
X = ⌀+A+0,1 мм,
где X - высота нижней кромки верхней опоры до верхней кромки нижней опоры;
⌀ - диаметр таблетки, мм;
А - максимальный припуск снимаемой за один проход при шлифовании и
Х1=N-М+а-М1,
где X1 - высота нижней опоры;
N - расстояние от базовой плоскости суппорта до линии центров кругов, мм;
М - расстояние от базовой плоскости суппорта до опорной поверхности опоры;
M1 - расстояние от линии центров таблеток до линии центров кругов;
а - величина, равная разнице между 1/2 диаметра таблетки и расстоянием от линии движения таблеток по опорной поверхности нижней опоры до кромки опоры нижней,
после чего сушку таблеток проводят в инертной газовой среде.1. A method of manufacturing a sleeve tablet fuel for fuel elements, including the preparation of a pre-powder of uranium dioxide UO 2 enriched with uranium 235 to 2-5%, mixing with a dry binder - zinc stearate [Zn (C 17 H 35 COO) 2 ] and with an oxide powder U 3 O 8 , pressing with a lubricant in a matrix with a needle with the application of two-sided pressing forces, thermal removal of the binder, sintering of tablets in a gaseous reducing medium, wet grinding with a diamond wheel, drying, rejection, processing of defective tablets and return t into a presowder powder, characterized in that as a powder of uranium dioxide UO 2, a powder of uranium dioxide UO 2 obtained by the method of wet conversion with reduction from ammonium diuranate (ADU process), which is used without compaction operations (pressing briquettes, crushing, grinding, sifting), the mixing of UO 2 dioxide (ADU process) with a dry binder - zinc stearate [Zn (C 17 H 35 COO) 2 ] is carried out step by step in an inert gas medium, where in the first stage 5-10 parts of a batch of uranium dioxide powder are mixed UO 2 (received ADU- percent Essom) with the total amount of zinc stearate required per batch, in the second stage the mixture is mixed with 5-10 parts of uranium dioxide powder UO 2 (obtained by the ADU process) from the batch, in the third stage the mixture is mixed with the rest of the powder of uranium dioxide UO 2 (obtained by the ADU process and with the return of the recycled marriage of tablets, which are previously thermally oxidized with air from uranium dioxide UO 2 (obtained by the ADU process) to uranium oxide U 3 O 8 , zinc stearate, wounds are used as a lubricant for pressing tablets its introduced into the presowder powder, after pressing the tablets out of the matrix, the matrix needle is cleaned by idling the punch, wet grinding of the tablet surface after sintering in a reducing medium is carried out by a set of circles, the diamond coating of which is selected from rough grinding to fine grinding, the width of the surface of all circles is determined by the formula
L = L 1 + H,
where L is the width of the diamond surface;
L 1 - the width of the driving circle;
H is the height of the tablet, and in the unit grinding the surface of the tablets, the upper and lower supports are set by the formula
X = ⌀ + A + 0.1 mm,
where X is the height of the lower edge of the upper support to the upper edge of the lower support;
⌀ is the diameter of the tablet, mm;
And - the maximum allowance removed in one pass during grinding and
X 1 = N-M + a-M 1 ,
where X 1 - the height of the lower support;
N is the distance from the base plane of the caliper to the line of the centers of the circles, mm;
M is the distance from the base plane of the caliper to the support surface of the support;
M 1 is the distance from the line of centers of tablets to the line of centers of circles;
a is a value equal to the difference between 1/2 of the diameter of the tablet and the distance from the line of movement of the tablets along the supporting surface of the lower support to the edge of the lower support,
after which the tablets are dried in an inert gas atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU98120684/06A RU2158030C2 (en) | 1998-11-18 | 1998-11-18 | Method and apparatus for fabrication of tabletted fuel for heat- generating elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU98120684/06A RU2158030C2 (en) | 1998-11-18 | 1998-11-18 | Method and apparatus for fabrication of tabletted fuel for heat- generating elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU98120684A true RU98120684A (en) | 2000-09-20 |
| RU2158030C2 RU2158030C2 (en) | 2000-10-20 |
Family
ID=20212348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU98120684/06A RU2158030C2 (en) | 1998-11-18 | 1998-11-18 | Method and apparatus for fabrication of tabletted fuel for heat- generating elements |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2158030C2 (en) |
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| RU2360308C1 (en) * | 2007-11-27 | 2009-06-27 | Открытое акционерное общество "Новосибирский завод химконцентратов" | Method of fuel pellet production for nuclear fuel elements |
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