CN103386398A - Method and device for sorting uranium dioxide core microspheres - Google Patents
Method and device for sorting uranium dioxide core microspheres Download PDFInfo
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- CN103386398A CN103386398A CN2013103064782A CN201310306478A CN103386398A CN 103386398 A CN103386398 A CN 103386398A CN 2013103064782 A CN2013103064782 A CN 2013103064782A CN 201310306478 A CN201310306478 A CN 201310306478A CN 103386398 A CN103386398 A CN 103386398A
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Abstract
The invention discloses a method for sorting uranium dioxide core microspheres. The method comprises the following steps of rough sorting, primarily sorting the uranium dioxide core microspheres; vibration sorting, carrying out vibration sorting on the roughly sorted uranium dioxide core microspheres to remove the abnormal-shaped particles with a poor degree of sphericity; fine sorting, finely sorting the vibration-sorted uranium dioxide core microspheres with a good degree of sphericity; proportion mixing, mixing the finely sorted uranium dioxide core microspheres according to the proportion. The invention also discloses a device for sorting the uranium dioxide core microspheres. The device comprises a rough sorting module, a vibration sorting module, a fine sorting module and a proportion mixing module, wherein the rough sorting module is used for primarily sorting the uranium dioxide core microspheres, the vibration sorting module is used for carrying out vibration sorting on the roughly sorted uranium dioxide core microspheres to remove the abnormal-shaped particles with the poor degree of sphericity, the fine sorting module is used for finely sorting the vibration-sorted uranium dioxide core microspheres with the good degree of sphericity, and the proportion mixing module is used for mixing the finely sorted uranium dioxide core microspheres according to the proportion.
Description
Technical field
The present invention relates to microballoon material sieving technology field, particularly a kind of method for separating of uranium dioxide core core microballoon.
Background technology
After the eighties in 20th century, the HTGR that various countries' design, construction and plan are built all uses the TRISO type to coat fuel particle ，Qi center and is generally the uranium dioxide core core of low enrichment, by sol-gel process, prepares.One of most important functions of coated particle is to stop fission product.This just directly requires coated particle to have uniform coating thickness and good sphericity, correspondingly requires to coat the core core and has uniform diameter and good sphericity.Therefore, the selection of diameter and sphericity has become one of research topic important in uranium dioxide core core preparation technology and equipment research.
The method of screening uranium dioxide core core microballoon is first screening at present, then the choosing of shaking, or the choosing of first shaking, and then screening, perhaps uses and manually screens.
The method of first screening the choosing of shaking afterwards easily sticks in lopsided particle and chip in uranium dioxide core core microballoon on screen cloth, and then sneaks in finished product.The choosing of first shaking, and then the method for screening easily makes the larger uranium dioxide core core microballoon of diameter stop up to shake to select the machine feed pipe.The artificial screening cost is high, and uranium dioxide core core microballoon has injury with radiation to human body.
Summary of the invention
The technical problem that (one) will solve
The object of the invention is to solve in traditional uranium dioxide core core microballoon method for separating in urania core core microballoon lopsided particle and chip sticks on screen cloth or uranium dioxide core core microballoon stops up to shake and selects the problem of machine feed pipe.
(2) technical scheme
The present invention adopts following technical scheme:
A kind of method for separating for uranium dioxide core core microballoon comprises following steps:
1) coarse sizing, carry out preliminary screening to uranium dioxide core core microballoon;
2) choosing of shaking, shake and select the bad lopsided particle of sphericity the uranium dioxide core core microballoon through coarse sizing;
3) fine screening, the screen cloth that is no less than 2 layers to passing through uranium dioxide core core microballoon process choosing, good sphericity of shaking is carefully analysed sieve;
4) ratio is mixed, and the uranium dioxide core core microballoon through fine screening is mixed in proportion.
Preferably, described coarse sizing method is to filter out diameter greater than the uranium dioxide core core microballoon of 1 millimeter.
Preferably, the described choosing amount of shaking is 90-100 gram per hour.
Preferably, described fine screening feeding quantity is each 100-150 gram.
Further, each time of described fine screening is 5 minutes.
Preferably, described fine screen mesh is 3 layers of screening net.
Further, the screening screen distance of described 3 layers of standard screen network selection is descending is arranged in order from top to bottom.
Further, the bore of described 3 layers of standard screen network selection is followed successively by 560 μ m, 500 μ m, 450 μ m from top to bottom.
Preferably, mix in proportion uranium dioxide core core microballoon for mixing the online uranium dioxide core core microballoon that descends most on the two layer screen network selection of fine screening.
A kind of sorting unit for uranium dioxide core core microballoon comprises with lower module:
1) coarse sizing module, carry out preliminary screening to uranium dioxide core core microballoon;
2) the modeling piece that shakes, shake and select the bad lopsided particle of sphericity the uranium dioxide core core microballoon through coarse sizing;
3) fine screening module, the screen cloth that is no less than 2 layers to passing through uranium dioxide core core microballoon process choosing, good sphericity of shaking is carefully analysed sieve;
4) ratio mixing module, mix in proportion to the uranium dioxide core core microballoon through fine screening.
(3) beneficial effect
The present invention adopts first coarse sizing, in the choosing of shaking, and then the method for fine screening, can reduce in urania core core microballoon lopsided particle during the sorting of uranium dioxide core core microballoon and chip sticks on screen cloth or uranium dioxide core core microballoon stops up to shake and selects the probability of machine feed pipe.
Description of drawings
Fig. 1 is the schematic diagram of a kind of uranium dioxide core core microballoon method for separating of the present invention;
Fig. 2 is the schematic diagram of a kind of uranium dioxide core core microballoon sorting unit of the present invention;
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described further.Following examples only are used for explanation the present invention, but are not used for limiting the scope of the invention.
The schematic diagram of the schematic diagram of a kind of uranium dioxide core core microballoon method for separating as shown in Figure 1 and a kind of uranium dioxide core core microballoon sorting unit as shown in Figure 2, the present invention adopts method and the device shown in Figure 2 explanation of carrying out the sorting of uranium dioxide core core microballoon as shown in Figure 1.
First the uranium dioxide core core microballoon after high temperature sintering is added coarse sizing module as shown in Figure 2, the aperture of scalping network selection is set to 1mm, crossing aperture is the standard analysis sieve of 1mm, filter out diameter greater than the uranium dioxide core core microballoon of 1mm and weigh, the uranium dioxide core core microballoon of diameter less than 1mm collected and weigh.
Whole diameters are put into to shake less than the uranium dioxide core core microballoon of 1mm select the machine module, select machine to shake through shaking and select the bad lopsided particle of sphericity, shake and select capability control to be 90-100g per hour, the uranium dioxide core core microballoon of good sphericity and the bad uranium dioxide core core microballoon of sphericity are collected respectively and weighed.
The uranium dioxide core core microballoon of good sphericity is put into the fine screening module.Through three layers of standard sub-sieve, mesh size reduces from top to bottom successively, being followed successively by from top to bottom and adopting diameter is the aperture screen cloth of 560 μ m, 500 μ m, 450 μ m, feeding quantity is controlled to be each 100～150g, each screening time is controlled to be 5 minutes, after each screening finishes, the particle on each layer screen cloth is collected respectively and is weighed.
The online particle of aperture sieve of all 500 μ m and 450 μ m is put into the batch mixing module in proportion evenly mix, weigh after mixing stand-by, and sampling detects.
All diameters greater than 1mm, deformity, diameter all is recovered as discarded particle less than the uranium dioxide core core microballoon of 450 μ m.
Above embodiment only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification, so all technical schemes that are equal to also belong to protection category of the present invention.
Claims (10)
1. a method for separating that is used for uranium dioxide core core microballoon, is characterized in that, described method for separating comprises following steps:
1) coarse sizing, carry out preliminary screening to uranium dioxide core core microballoon;
2) choosing of shaking, shake and select the bad lopsided particle of sphericity the uranium dioxide core core microballoon through coarse sizing;
3) fine screening, the screen cloth that is no less than 2 layers to passing through uranium dioxide core core microballoon process choosing, good sphericity of shaking is carefully analysed sieve;
4) ratio is mixed, and the uranium dioxide core core microballoon through fine screening is mixed in proportion.
2. the method for separating of uranium dioxide core core microballoon according to claim 1, is characterized in that, the coarse sizing method of described step 1) is to filter out diameter greater than the uranium dioxide core core microballoon of 1 millimeter.
3. the method for separating of uranium dioxide core core microballoon according to claim 1, is characterized in that described step 2) in the choosing amount of shaking be 90-100 gram per hour.
4. the method for separating of uranium dioxide core core microballoon according to claim 1, is characterized in that, the fine screening feeding quantity in described step 3) is each 100-150 gram.
5. the method for separating of uranium dioxide core core microballoon according to claim 4, is characterized in that, each time of described fine screening is 5 minutes.
6. the method for separating of uranium dioxide core core microballoon according to claim 1, is characterized in that, the screen cloth of 2 layers of being no less than in described step 3) is 3 layers of screening net.
7. the method for separating of uranium dioxide core core microballoon according to claim 6, is characterized in that, the screening screen distance of described 3 layers of standard screen network selection is descending to be arranged in order from top to bottom.
8. the method for separating of uranium dioxide core core microballoon according to claim 7, is characterized in that, the bore of described 3 layers of standard screen network selection is followed successively by 560 μ m, 500 μ m, 450 μ m from top to bottom.
9. the method for separating of uranium dioxide core core microballoon according to claim 1, is characterized in that, mixes in proportion uranium dioxide core core microballoon in described step 4) for mixing the online uranium dioxide core core microballoon that descends most on the two layer screen network selection of fine screening.
10. a sorting unit that is used for uranium dioxide core core microballoon, is characterized in that, described device comprises with lower module:
1) coarse sizing module, carry out preliminary screening to uranium dioxide core core microballoon;
2) the modeling piece that shakes, shake and select the bad lopsided particle of sphericity the uranium dioxide core core microballoon through coarse sizing;
3) fine screening module, the screen cloth that is no less than 2 layers to passing through uranium dioxide core core microballoon process choosing, good sphericity of shaking is carefully analysed sieve;
4) ratio mixing module, mix in proportion to the uranium dioxide core core microballoon through fine screening.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306478.2A CN103386398B (en) | 2013-07-19 | 2013-07-19 | The method for separating of uranium dioxide core microballoon and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306478.2A CN103386398B (en) | 2013-07-19 | 2013-07-19 | The method for separating of uranium dioxide core microballoon and device |
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| CN103386398A true CN103386398A (en) | 2013-11-13 |
| CN103386398B CN103386398B (en) | 2016-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936076A (en) * | 2014-01-16 | 2014-07-23 | 中国科学院高能物理研究所 | Uranium oxide micro-sphere and preparation method thereof |
Citations (6)
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| US4002462A (en) * | 1974-12-31 | 1977-01-11 | Maddox Chesford M | Ore beneficiation method and apparatus |
| JPS6471090A (en) * | 1987-09-10 | 1989-03-16 | Fujitsu Ltd | Pressure-connecting method |
| JP2006300639A (en) * | 2005-04-19 | 2006-11-02 | Nuclear Fuel Ind Ltd | Coated fuel particle recovery method from fuel for high-temperature gas-cooled reactor |
| US7390934B1 (en) * | 2004-01-06 | 2008-06-24 | Areva Np Inc. | Apparatus and method for aiding in the removal of enriched uranium from soils |
| CN102851489A (en) * | 2012-08-30 | 2013-01-02 | 北京矿冶研究总院 | Method for comprehensively recovering valuable metals in limonite type laterite-nickel ore |
| CN202962830U (en) * | 2012-09-27 | 2013-06-05 | 清华大学 | Spherical particle continuous screening machine |
-
2013
- 2013-07-19 CN CN201310306478.2A patent/CN103386398B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002462A (en) * | 1974-12-31 | 1977-01-11 | Maddox Chesford M | Ore beneficiation method and apparatus |
| JPS6471090A (en) * | 1987-09-10 | 1989-03-16 | Fujitsu Ltd | Pressure-connecting method |
| US7390934B1 (en) * | 2004-01-06 | 2008-06-24 | Areva Np Inc. | Apparatus and method for aiding in the removal of enriched uranium from soils |
| JP2006300639A (en) * | 2005-04-19 | 2006-11-02 | Nuclear Fuel Ind Ltd | Coated fuel particle recovery method from fuel for high-temperature gas-cooled reactor |
| CN102851489A (en) * | 2012-08-30 | 2013-01-02 | 北京矿冶研究总院 | Method for comprehensively recovering valuable metals in limonite type laterite-nickel ore |
| CN202962830U (en) * | 2012-09-27 | 2013-06-05 | 清华大学 | Spherical particle continuous screening machine |
Non-Patent Citations (1)
| Title |
|---|
| 杨志军等: "高温气冷堆UO2燃料芯核振动分选设备", 《原子能科学技术》, vol. 37, no. 2, 31 March 2003 (2003-03-31) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936076A (en) * | 2014-01-16 | 2014-07-23 | 中国科学院高能物理研究所 | Uranium oxide micro-sphere and preparation method thereof |
| CN103936076B (en) * | 2014-01-16 | 2015-11-25 | 中国科学院高能物理研究所 | Uranium oxide micron ball and preparation method thereof |
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| Publication number | Publication date |
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| CN103386398B (en) | 2016-03-30 |
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