CN101264514B - Preparation of238Powder metallurgy process of Pu source - Google Patents
Preparation of238Powder metallurgy process of Pu source Download PDFInfo
- Publication number
- CN101264514B CN101264514B CN2007100870052A CN200710087005A CN101264514B CN 101264514 B CN101264514 B CN 101264514B CN 2007100870052 A CN2007100870052 A CN 2007100870052A CN 200710087005 A CN200710087005 A CN 200710087005A CN 101264514 B CN101264514 B CN 101264514B
- Authority
- CN
- China
- Prior art keywords
- source
- mixing
- sintering
- powder
- puo
- 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 - Fee Related
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000005272 metallurgy Methods 0.000 title 1
- 239000000843 powder Substances 0.000 claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 3
- 239000012717 electrostatic precipitator Substances 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- FLDALJIYKQCYHH-UHFFFAOYSA-N plutonium(IV) oxide Inorganic materials [O-2].[O-2].[Pu+4] FLDALJIYKQCYHH-UHFFFAOYSA-N 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 11
- 239000000047 product Substances 0.000 description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 7
- 239000004332 silver Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 239000000941 radioactive substance Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000011149 active material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention provides a radiation-free electrostatic precipitator with small radiation dose, long service life and good electrostatic elimination effect238A preparation process of Pu source. The process comprises the steps of mixing, molding, sintering, rolling, preparing a secondary block and a secondary active band, preparing a tertiary block, rolling a finished source band and the like, wherein the mixing is to mix238PuO2Mixing with Au powder according to the proportion of 1: 14-1: 20, mixing in a mass ratio; the molding is carried out under the molding pressure of 1.5-2 t/cm2Under the conditions of (a); the sintering is carried out at 650-1000 ℃.
Description
Technical field
The present invention relates to the manufacturing field of metal dust, particularly a kind of preparation
238The powder metallurgical technique in Pu source.
Background technology
In recent years, because being extensive use of of new and high technology electronic product produces a large amount of static inevitably in the electronic product production process, seriously influence product quality, so it is more urgent to offset the requirement that destatics in the industrial production.There is many enterprises' production and sales Xelminator on ground such as domestic Wuxi, Shandong, Jilin, comprise kinds such as electrion formula, induction discharge formula, charcoal fiber formula, are mainly used in industries such as electronics, weaving, plastics, bag, printing, slitting paper.But these Xelminator results of use are desirable not to the utmost, and ion fan-type radioactivity arrester serviceability is preferable, the core component of this arrester is a radioactive source, the ray that utilization is sent comes the ionization air to produce negative ions to offset negative ions on the object, reach the purpose of eliminating static, this kind radioactivity arrester mostly is imported product, and its radioactive source uses nucleic
210Po, the half-life is 138 days, and service life, and the 210Po nucleic mostly was military only one year, and preparation technology is comparatively complicated, domestic shortage; The 241Am source operating period is longer, but the γ radiation level is higher, can not satisfy the requirement of using in public places.
Summary of the invention
The present invention has overcome the deficiency that existing static is eliminated the source, provides that a kind of to have a dose of radiation little, long service life, and static is eliminated effective
238The preparation technology in Pu source.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
This technology comprises steps such as mixing, moulding, sintering, rolling, secondary piece and the preparation of secondary active zone, three piece preparations and finished product source band be rolling, described mixing be with
238PuO
2Mix by 1:14～1:20 mass ratio with the Au powder; Described moulding is to be 1.5～2t/cm in briquetting pressure
2Condition under carry out; Described sintering is to carry out under 650～1000 ℃ condition;
For fastness and the ductility of an active zone and the sealing requirements in source that better meets active piece, the present invention realizes by technology once: described
238PuO
2Mix by the 1:17 mass ratio with the Au powder.Wet-mixing is adopted in described mixing.Described rolling before active piece being sealed between silver-colored groove and the goldleaf.Described sintering carries out under 850～900 ℃ condition.
Compared with prior art, the invention has the beneficial effects as follows: adopt powder metallurgical technique system source, active material is combined closely between basalis (silver) and surface coating (goldleaf), guaranteed the seal request of radioactive source, development
238The Pu source has prolonged the service life of arrester, has reached the level of international like product.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described in further detail:
Embodiment 1
The device that present embodiment is used: glove box, high temperature sintering furnace, hydraulic press, milling train, a particle measurement instrument, pollution instrument.
Take by weighing respectively
238PuO
210g and Au powder 140g use nitric acid dissolve
238PuO
2, when precipitating, adds radioactive substance carrier A u powder, will precipitate oven dry back grinding under given conditions, be pressurized to 1.5t/cm with particular manufacturing craft then
3Back base, carry out 650 ℃ of high temperature sinterings after the compression moulding, the active piece behind the sintering is sealed between silver-colored groove and the goldleaf, extend into an active zone of suitable length after the high temperature sintering forging and pressing, after an active zone is cut into once active bar, is sealed in once more and is fired into the secondary piece between silver bullion and goldleaf.The secondary piece is extended into the secondary active zone of suitable length.The secondary active zone is cut into the active bar of secondary, is sealed in and is fired into piece between silver bullion and goldleaf three times, three pieces are rolled down to suitable length, obtain finished product source band after the shearing.
Embodiment 2
Take by weighing respectively
238PuO
210g and Au powder 170g use nitric acid dissolve
238PuO
2, when precipitating, adds radioactive substance carrier A u powder, will precipitate oven dry back grinding under given conditions, be pressurized to 1.8t/cm with particular manufacturing craft then
3Back base, carry out 900 ℃ of high temperature sinterings after the compression moulding, the active piece behind the sintering is sealed between silver-colored groove and the goldleaf, extend into an active zone of suitable length after the high temperature sintering forging and pressing, after an active zone is cut into once active bar, is sealed in once more and is fired into the secondary piece between silver bullion and goldleaf.The secondary piece is extended into the secondary active zone of suitable length.The secondary active zone is cut into the active bar of secondary, is sealed in and is fired into piece between silver bullion and goldleaf three times, three pieces are rolled down to suitable length, obtain finished product source band after the shearing.
Embodiment 3
Take by weighing respectively
238PuO
210g and Au powder 200g use nitric acid dissolve
238PuO
2, when precipitating, adds radioactive substance carrier A u powder, will precipitate oven dry back grinding under given conditions, be pressurized to 2t/cm with particular manufacturing craft then
3Back base, carry out 1000 ℃ of high temperature sinterings after the compression moulding, the active piece behind the sintering is sealed between silver-colored groove and the goldleaf, extend into an active zone of suitable length after the high temperature sintering forging and pressing, after an active zone is cut into once active bar, is sealed in once more and is fired into the secondary piece between silver bullion and goldleaf.The secondary piece is extended into the secondary active zone of suitable length.The secondary active zone is cut into the active bar of secondary, is sealed in and is fired into piece between silver bullion and goldleaf three times, three pieces are rolled down to suitable length, obtain finished product source band after the shearing.
Claims (4)
1. one kind prepares
238The powder metallurgical technique in Pu source comprises mixing, moulding, sintering, rolling, secondary piece and the preparation of secondary active zone, three pieces preparations and the rolling step of finished product source band, it is characterized in that,
Described mixing be with
238PuO
2Mix by 1: 14～1: 20 mass ratio with the Au powder;
Described moulding is to be 1.5～2t/cm in briquetting pressure
2Condition under carry out;
Described sintering is to carry out under 650～1000 ℃ condition.
2. preparation according to claim 1
238The powder metallurgical technique in Pu source is characterized in that, and is described
238PuO
2Mix by 1: 17 mass ratio with the Au powder.
3. preparation according to claim 1
238The powder metallurgical technique in Pu source is characterized in that, wet-mixing is adopted in described mixing.
4. preparation according to claim 1
238The powder metallurgical technique in Pu source is characterized in that, described sintering carries out under 850～900 ℃ condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100870052A CN101264514B (en) | 2007-03-14 | 2007-03-14 | Preparation of238Powder metallurgy process of Pu source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100870052A CN101264514B (en) | 2007-03-14 | 2007-03-14 | Preparation of238Powder metallurgy process of Pu source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101264514A CN101264514A (en) | 2008-09-17 |
| CN101264514B true CN101264514B (en) | 2010-09-22 |
Family
ID=39987327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100870052A Expired - Fee Related CN101264514B (en) | 2007-03-14 | 2007-03-14 | Preparation of238Powder metallurgy process of Pu source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101264514B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785783B (en) * | 2015-04-02 | 2016-09-14 | 中国原子能科学研究院 | A kind of self-cradling type61the preparation method of Ni isotopic target |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099961A (en) * | 1976-12-21 | 1978-07-11 | The United States Of America As Represented By The United States Department Of Energy | Closed cell metal foam method |
| CN2537196Y (en) * | 2002-03-15 | 2003-02-19 | 孟至和 | Electrostatic eliminator |
| CN1539149A (en) * | 2001-08-08 | 2004-10-20 | 法玛通Anp有限公司 | Method for producing mixed oxide nuclear fuel powder and mixed oxide nuclear fuel sintered compact |
-
2007
- 2007-03-14 CN CN2007100870052A patent/CN101264514B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099961A (en) * | 1976-12-21 | 1978-07-11 | The United States Of America As Represented By The United States Department Of Energy | Closed cell metal foam method |
| CN1539149A (en) * | 2001-08-08 | 2004-10-20 | 法玛通Anp有限公司 | Method for producing mixed oxide nuclear fuel powder and mixed oxide nuclear fuel sintered compact |
| CN2537196Y (en) * | 2002-03-15 | 2003-02-19 | 孟至和 | Electrostatic eliminator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101264514A (en) | 2008-09-17 |
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