JPS633643B2 - - Google Patents
Info
- Publication number
- JPS633643B2 JPS633643B2 JP55016504A JP1650480A JPS633643B2 JP S633643 B2 JPS633643 B2 JP S633643B2 JP 55016504 A JP55016504 A JP 55016504A JP 1650480 A JP1650480 A JP 1650480A JP S633643 B2 JPS633643 B2 JP S633643B2
- Authority
- JP
- Japan
- Prior art keywords
- ferromagnetic
- ferromagnetic object
- metal
- nitric acid
- tube
- 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
Links
- 230000005294 ferromagnetic effect Effects 0.000 claims description 39
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 10
- 239000006148 magnetic separator Substances 0.000 claims description 10
- 229910017604 nitric acid Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 description 7
- 239000011343 solid material Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000005291 magnetic effect Effects 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000003758 nuclear fuel Substances 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 229910052778 Plutonium Inorganic materials 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/28—Magnetic plugs and dipsticks
- B03C1/286—Magnetic plugs and dipsticks disposed at the inner circumference of a recipient, e.g. magnetic drain bolt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Electroplating Methods And Accessories (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Description
【発明の詳細な説明】
本発明は液体から粒子を除去する磁気セパレー
タに用いる収集体に係り、特に、核燃料物質の再
処理中に液体から粒子を除去する磁気セパレータ
に用いる収集体に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to collectors for use in magnetic separators for removing particles from liquids, and more particularly to collectors for use in magnetic separators for removing particles from liquids during the reprocessing of nuclear fuel material.
核燃料は、原子炉において照射を受けた後、核
分裂生成物からウラニウム及びプルトニウムを分
離するために処理される。この工程の前に、上記
照射された燃料は溶解器において硝酸で溶解さ
れ、そしてそれにより生じたウラニウム、プルト
ニウム及び核分裂生成物の溶液に対し、溶媒抽出
技術を用いて前記処理が行われる。上記溶液中に
溶解しない固体物質があると、上記処理の妨げに
なり、従つてこの溶解しない固体物質を上記溶液
から除去することが望ましい。 After nuclear fuel is irradiated in a nuclear reactor, it is processed to separate uranium and plutonium from the fission products. Prior to this step, the irradiated fuel is dissolved with nitric acid in a dissolver and the resulting solution of uranium, plutonium and fission products is subjected to the treatment using solvent extraction techniques. Any undissolved solid material in the solution will interfere with the process and it is therefore desirable to remove this undissolved solid material from the solution.
溶解器からの流出液を磁気セパレータに通し
て、溶解器に残された溶液から強磁性及び常磁性
固体粒子を除去することにより、溶解しなかつた
固体物質を除去することが知られている。溶解器
からの流出液は侵食性が強いので、固体粒子を収
集するための物質は、これが有用な寿命を持つた
めには侵食に耐えねばならないことになる。 It is known to remove undissolved solid material by passing the effluent from the dissolver through a magnetic separator to remove ferromagnetic and paramagnetic solid particles from the solution left in the dissolver. Since the effluent from the dissolver is highly erosive, it follows that the material for collecting solid particles must resist erosion if it is to have a useful life.
固体粒子は磁界内に配置された一般的に球状の
強磁性物体に収集することができるが、硝酸によ
る侵食に耐える白金や金の様な物質を個々の強磁
性物体に被着乃至はメツキして強磁性物体を保護
し且つその寿命を延ばすことが知られている。 Solid particles can be collected on generally spherical ferromagnetic objects placed in a magnetic field, but individual ferromagnetic objects can be coated or plated with a material such as platinum or gold that resists attack by nitric acid. It is known to protect ferromagnetic objects and extend their lifetime.
本発明の目的は、強磁性物体に耐酸性の保護物
質を被着する方法を提供することである。 It is an object of the present invention to provide a method for applying acid-resistant protective substances to ferromagnetic objects.
本発明によれば、磁気セパレータに用いる収集
体を形成する方法は、硝酸による侵食に耐える金
属を強磁性物体に対して均一にプレスして該強磁
性物体に上記金属を被せることより成る。 According to the invention, a method of forming a collector for use in a magnetic separator consists of uniformly pressing a metal resistant to attack by nitric acid against a ferromagnetic object and covering the ferromagnetic object with said metal.
上記強磁性物体は上記金属の管内に配置され、
次いでこの管は均一にプレスすることにより上記
強磁性物体に対して変形される。或いは又、上記
強磁性物体は２つの円筒間の環状ギヤツプに配置
され、次いでこれら円筒を均一に変形して上記強
磁性物体に被せてもよい。更に又、上記強磁性物
体は上記金属のプレート即ちシート間に配置さ
れ、次いでこれらプレートが上記強磁性物体に対
して均一にプレスされてもよい。 the ferromagnetic object is placed within the metal tube;
This tube is then deformed against the ferromagnetic body by uniform pressing. Alternatively, the ferromagnetic object may be placed in an annular gap between two cylinders, and then the cylinders are uniformly deformed over the ferromagnetic object. Furthermore, the ferromagnetic object may be placed between plates or sheets of metal, and the plates then pressed uniformly against the ferromagnetic object.
以下、添付図面を参照して本発明を１例として
説明する。 The invention will now be described by way of example with reference to the accompanying drawings.
第１図に示された収集体ユニツトは複数個の球
状強磁性物体１と、硝酸による侵食に耐える金属
の管２とで形成される。金属２はステンレススチ
ールである。球状の強磁性物体１は管の中へ落と
され、そして管の端３は空気を除くために排気さ
れた後シールされる。球状の強磁性物体を含むこ
のシールされた管は次いで液圧又は空気圧で行わ
れる均一プレスとして知られている例えば等方静
水圧圧縮技術によつて外部からの力を受け、管は
第１図に示された形状へと変形され、各個々の球
状強磁性物体１には上記耐酸性金属が個々に被着
される。球状の強磁性物体１はこの変形された管
の長さに沿つて離間される。この様な収集体ユニ
ツト複数個を磁気セパレータ内で組み立てゝ、溶
解器からの流出液に含まれた溶解しなかつた固体
物質を収集する収集体を形成することができる。 The collector unit shown in FIG. 1 is formed of a plurality of spherical ferromagnetic bodies 1 and a metal tube 2 that resists attack by nitric acid. Metal 2 is stainless steel. A spherical ferromagnetic object 1 is dropped into a tube and the end 3 of the tube is sealed after being evacuated to remove air. This sealed tube containing the spherical ferromagnetic object is then subjected to an external force, e.g. by an isostatic compression technique known as homogeneous pressing, which is carried out either hydraulically or pneumatically, and the tube is forced into the shape shown in FIG. Each individual spherical ferromagnetic object 1 is individually coated with the acid-resistant metal. Spherical ferromagnetic bodies 1 are spaced apart along the length of this deformed tube. A plurality of such collector units can be assembled within a magnetic separator to form a collector for collecting undissolved solid material contained in the effluent from the dissolver.
第２図に示された収集体ユニツトは耐酸性金属
で各々形成された内部及び外部管即ち円筒４及び
５を備えている。この様な収集体ユニツトを形成
するために、強磁性物体６は円筒４と５との間に
初めに存在するギヤツプ中に配置される。次いで
これらの管は均一にプレスされ、強磁性物体６に
対して変形されそして第２図に示された形状にな
る。強磁性物体６は円筒の金属内に埋め込まれ
る。円筒の両端はプレス作業中にシールされそし
て円筒は所要長さを持つことができる。磁気セパ
レータに用いられる収集体は第２図に示された様
な複数個のユニツトで構成することができる。 The collector unit shown in FIG. 2 includes inner and outer tubes or cylinders 4 and 5, each formed of acid-resistant metal. To form such a collector unit, a ferromagnetic object 6 is placed in the gap that initially exists between the cylinders 4 and 5. These tubes are then uniformly pressed and deformed against the ferromagnetic body 6 and take the shape shown in FIG. A ferromagnetic object 6 is embedded within the metal cylinder. Both ends of the cylinder are sealed during the pressing operation and the cylinder can have the required length. The collector used in the magnetic separator can be composed of a plurality of units as shown in FIG.
第３図に示された収集体ユニツトは２つのプレ
ート７及び８を強磁性物体９に対して均一にプレ
スすることによつて形成される。これらプレート
は耐酸性金属で作られ、そして強磁性物体９はこ
れらプレートの金属内に埋め込まれる。このユニ
ツトの周囲はプレス作業中にシールされる。磁気
セパレータに用いる収集体は複数個のこの様なプ
レートユニツトで形成することができる。 The collector unit shown in FIG. 3 is formed by uniformly pressing two plates 7 and 8 against a ferromagnetic body 9. The collector unit shown in FIG. The plates are made of acid-resistant metal and the ferromagnetic objects 9 are embedded within the metal of these plates. The perimeter of this unit is sealed during the pressing operation. A collector for use in a magnetic separator can be formed from a plurality of such plate units.
強磁性物体は金属性の鉄酸化物又は磁気性の鉄
酸化物の粒体であり、そしていかなる形状でもよ
く、必ずしも添付図面に示した様な球形でなくて
もよい。 The ferromagnetic bodies are particles of metallic iron oxide or magnetic iron oxide and may be of any shape, not necessarily spherical as shown in the accompanying drawings.
ステンレススチール以外の金属を用いて強磁性
物体を被着することもできる。例えば、硝酸によ
る侵食に耐えるその他の金属は金や、白金や、パ
ラジウムである。本明細書で使用する“金属”と
いう語は硝酸による侵食に耐える金属合金も含む
ものとする。 Metals other than stainless steel can also be used to deposit ferromagnetic objects. For example, other metals that resist attack by nitric acid are gold, platinum, and palladium. As used herein, the term "metal" is also intended to include metal alloys that resist attack by nitric acid.
以上に述べた収集体ユニツトが磁気セパレータ
に用いられる。磁気セパレータは、照射された核
燃料用の溶解器からの流出液に含まれた固体粒子
を収集するために磁界中に配置された一群の収集
体ユニツトを具備する。この目的のため、収集体
ユニツトは、(a)上記流出液に対して大きな収集表
面を与え、(b)粒体寸法の小さな強磁性物体を合体
し、(c)粒体寸法に対して被着の厚みが薄く、そし
て(d)磁界を除いた瞬間に、収集した固体物質を放
すことができねばならない。これらの要求は以上
に述べた収集体ユニツトによつて満たされる。 The collector unit described above is used in a magnetic separator. A magnetic separator comprises a group of collector units placed in a magnetic field to collect solid particles contained in the effluent from an irradiated nuclear fuel dissolver. For this purpose, the collector unit (a) provides a large collection surface for the effluent, (b) incorporates ferromagnetic objects of small grain size, and (c) The thickness of the deposit must be thin, and (d) the collected solid material must be able to be released the moment the magnetic field is removed. These requirements are met by the collector unit described above.
第１図は金属の管を球状の強磁性物体に対して
均一にプレスすることにより形成された収集体ユ
ニツトの１実施例を示す断面図、第２図は同心円
筒を強磁性物体に対して均一にプレスすることに
より形成された収集体ユニツトの別の実施例を示
す部分断面図、そして第３図はプレート型の収集
体ユニツトを示す図である。
１……球状の強磁性物体、２……金属の管、３
……管の端、４，５……円筒、６……強磁性物
体、７，８……プレート、９……強磁性物体。
Figure 1 is a cross-sectional view showing one embodiment of a collector unit formed by uniformly pressing a metal tube against a spherical ferromagnetic object, and Figure 2 is a cross-sectional view showing an embodiment of a collector unit formed by pressing a metal tube uniformly against a spherical ferromagnetic object. FIG. 3 is a partial cross-sectional view showing another embodiment of a collector unit formed by uniform pressing, and FIG. 3 shows a plate-shaped collector unit. 1... Spherical ferromagnetic object, 2... Metal tube, 3
... end of tube, 4, 5 ... cylinder, 6 ... ferromagnetic object, 7, 8 ... plate, 9 ... ferromagnetic object.
Claims (1)
レスして、その金属に強磁性物体を包み込むこと
を特徴とする磁気セパレータに用いる収集体の形
成方法。 ２ 強磁性物体１を耐硝酸性金属の管２に配置
し、管２を均一にプレスして強磁性物体を包み込
む特許請求の範囲１項に記載の収集体の形成方
法。 ３ 強磁性物体６を耐硝酸性金属の２つの同心円
筒４，５の間に配置し、これらの円筒４，５を均
一にプレスして変形することにより強磁性物体６
を包み込む特許請求の範囲１項に記載の収集体の
形成方法。 ４ 強磁性物体９を耐硝酸性金属の２枚の板７，
８の間に配置し、これらの板７，８を強磁性物体
９の周りに均一にプレスする特許請求の範囲１項
に記載の収集体の形成方法。[Scope of Claims] 1. A method for forming a collector for use in a magnetic separator, which comprises uniformly pressing a nitric acid-resistant metal around a ferromagnetic object so that the ferromagnetic object is wrapped in the metal. 2. The method of forming a collector according to claim 1, wherein the ferromagnetic object 1 is placed in a tube 2 made of nitric acid-resistant metal, and the tube 2 is pressed uniformly to enclose the ferromagnetic object. 3 A ferromagnetic object 6 is placed between two concentric cylinders 4 and 5 made of nitric acid-resistant metal, and the ferromagnetic object 6 is formed by uniformly pressing and deforming these cylinders 4 and 5.
A method of forming a collection body according to claim 1, which encloses. 4 Ferromagnetic object 9 is placed between two nitric acid-resistant metal plates 7,
8. A method as claimed in claim 1, in which the plates 7, 8 are pressed uniformly around the ferromagnetic body 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7904963 | 1979-02-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55109417A JPS55109417A (en) | 1980-08-22 |
| JPS633643B2 true JPS633643B2 (en) | 1988-01-25 |
Family
ID=10503147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1650480A Granted JPS55109417A (en) | 1979-02-13 | 1980-02-13 | Method of forming collecting body used for magnetic separator |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS55109417A (en) |
| DE (1) | DE3005158A1 (en) |
| FR (1) | FR2448938A1 (en) |
| IT (1) | IT1129063B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4400345C2 (en) * | 1994-01-07 | 1997-08-14 | Lambda Physik Gmbh | Device for cleaning laser gas |
| CN110180677B (en) * | 2019-06-25 | 2020-11-13 | 南京百夫雄图信息技术有限公司 | Energy-saving transformation method for high-gradient magnetic separator for mineral separation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3206657A (en) * | 1961-04-04 | 1965-09-14 | Moriya Saburo Miyata | Magnet assembly for filtering |
| FR2396592A1 (en) * | 1977-07-08 | 1979-02-02 | Commissariat Energie Atomique | MAGNETIC FILTER WITH PERMANENT MAGNETS |
-
1980
- 1980-02-12 DE DE19803005158 patent/DE3005158A1/en active Granted
- 1980-02-12 FR FR8003070A patent/FR2448938A1/en active Granted
- 1980-02-13 IT IT67215/80A patent/IT1129063B/en active
- 1980-02-13 JP JP1650480A patent/JPS55109417A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE3005158C2 (en) | 1988-10-27 |
| IT8067215A0 (en) | 1980-02-13 |
| DE3005158A1 (en) | 1980-08-21 |
| IT1129063B (en) | 1986-06-04 |
| JPS55109417A (en) | 1980-08-22 |
| FR2448938A1 (en) | 1980-09-12 |
| FR2448938B1 (en) | 1984-09-14 |
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