JP2000147188A - Sintering furnace for nuclear fuel - Google Patents
Sintering furnace for nuclear fuelInfo
- Publication number
- JP2000147188A JP2000147188A JP10316164A JP31616498A JP2000147188A JP 2000147188 A JP2000147188 A JP 2000147188A JP 10316164 A JP10316164 A JP 10316164A JP 31616498 A JP31616498 A JP 31616498A JP 2000147188 A JP2000147188 A JP 2000147188A
- Authority
- JP
- Japan
- Prior art keywords
- zone
- burn
- sintering
- sintering furnace
- gas
- 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.)
- Granted
Links
- 238000005245 sintering Methods 0.000 title claims abstract description 42
- 239000003758 nuclear fuel Substances 0.000 title claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 3
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 238000001816 cooling Methods 0.000 description 13
- 238000010583 slow cooling Methods 0.000 description 5
- 238000009770 conventional sintering Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000011449 brick Substances 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Powder Metallurgy (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水素ガスを主成分
とする還元ガスを雰囲気ガスとして使用し原子燃料用ペ
レットの焼結を行う原子燃料用焼結炉に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nuclear fuel sintering furnace for sintering nuclear fuel pellets using a reducing gas mainly composed of hydrogen gas as an atmospheric gas.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】一般
に、原子燃料用ペレットの焼結は、水素ガスを主成分と
する還元ガス雰囲気中で行われている。図４及び図５
は、上記原子燃料用ペレットの焼結を行う焼結炉の概略
構成を示す平断面概略図であって、その焼結炉は、機能
的に、被処理物である成形体内の添加物を除去するバー
ンオフゾーン１、成形体を焼結する高温焼結ゾーン２、
焼結体を室温近くまで冷却する冷却ゾーン３の３つに大
きく分けられ、上記高温焼結ゾーン２と冷却ゾーン３と
の間に徐冷ゾーン４が設けられている。2. Description of the Related Art Generally, sintering of nuclear fuel pellets is performed in a reducing gas atmosphere containing hydrogen gas as a main component. 4 and 5
FIG. 2 is a schematic plan sectional view showing a schematic configuration of a sintering furnace for sintering the nuclear fuel pellets. The sintering furnace functionally removes additives in a molded body which is an object to be processed. Burn-off zone 1 for sintering, high-temperature sintering zone 2 for sintering the compact,
The sintered body is roughly divided into three cooling zones 3 for cooling the sintered body to near room temperature. An annealing zone 4 is provided between the high-temperature sintering zone 2 and the cooling zone 3.
【０００３】上記バーンオフゾーン１は、粉末時に添加
された物質を除去し且つＯ／Ｕの調整を行うゾーンであ
って、炉壁がアルミナレンガによって構築され、その内
面に加熱用ヒータ５を設けた内熱方式（図４）と、バー
ンオフゾーン用金属マッフル１９を使用し雰囲気が充填
される炉室の外に加熱用ヒータ６を設けた外熱方式（図
５）とがある。そして、そのいずれの場合においても、
加熱温度は６００〜８００℃程度とされている。The burn-off zone 1 is a zone for removing substances added at the time of powdering and adjusting O / U. The furnace wall is made of alumina brick, and a heating heater 5 is provided on the inner surface thereof. An internal heat method (FIG. 4) and an external heat method (FIG. 5) using a metal muffle 19 for a burn-off zone and providing a heater 6 outside the furnace chamber filled with the atmosphere. And in either case,
The heating temperature is about 600 to 800 ° C.
【０００４】また、高温焼結ゾーン２は、添加物が除去
されＯ／Ｕが調整された成形体を高温度で緻密化するゾ
ーンであって、炉壁がアルミナレンガにより構築され、
その内面に加熱用ヒータ７を設けた内熱方式によって１
７００℃以上の温度に加熱される。[0004] The high-temperature sintering zone 2 is a zone for densifying a compact having a removed additive and an adjusted O / U at a high temperature. The furnace wall is made of alumina brick.
An internal heating system having a heating heater 7 on its inner surface
Heated to a temperature of 700 ° C. or higher.
【０００５】さらに、冷却ゾーン３は高温焼結ゾーンで
緻密化した焼結体を炉外に排出するため室温近くまで冷
却するゾーンであって、炉壁がアルミナレンガで構築さ
れた徐冷ゾーン４に続いて冷却ゾーン用金属マッフル２
０によって構築されており、その外面には冷却水槽８が
設けられている。Further, a cooling zone 3 is a zone for cooling the sintered compact densified in the high-temperature sintering zone to near room temperature in order to discharge the sintered body outside the furnace, and a slow cooling zone 4 in which the furnace wall is made of alumina brick. Followed by metal muffle 2 for cooling zone
0, and a cooling water tank 8 is provided on the outer surface thereof.
【０００６】上記冷却ゾーン３には雰囲気ガス入口管９
が設けられており、その雰囲気ガス入口管９から水素ガ
スを主成分とする還元ガスが雰囲気ガスとして炉内に供
給され、高温焼結ゾーン２を通り、その高温焼結ゾーン
２のバーンオフゾーン１寄りに設けられた雰囲気ガス出
口管１０から炉外に導出され、安全性を考慮して燃焼さ
せ、天蓋フードを介して排気される。The cooling zone 3 has an atmosphere gas inlet pipe 9.
A reducing gas containing hydrogen gas as a main component is supplied into the furnace as an atmosphere gas from the atmosphere gas inlet pipe 9, passes through the high-temperature sintering zone 2, and burn-off zone of the high-temperature sintering zone 2 The gas is drawn out of the furnace from an atmosphere gas outlet pipe 10 provided on the side, burned in consideration of safety, and exhausted through a canopy hood.
【０００７】一方、焼結される成形体は、バーンオフゾ
ーン１に搬入され、添加物が除去されるとともにＯ／Ｕ
が調整され、その後高温焼結ゾーン２で焼結された後、
徐冷ゾーン４及び冷却ゾーン３で順次室温近くまで冷却
され、炉外に取り出される。ところで、上述の如き焼結
炉においては、加熱は電気ヒータを使用するのが一般的
であり、高温焼結ゾーン２から排出される雰囲気ガスは
安全性から燃焼され、その燃焼ガスは天蓋フード等を介
して放出されている。On the other hand, the compact to be sintered is carried into the burn-off zone 1 where the additives are removed and the O / U is removed.
Is adjusted and then sintered in the high-temperature sintering zone 2,
In the slow cooling zone 4 and the cooling zone 3, it is cooled to near room temperature sequentially and taken out of the furnace. By the way, in the sintering furnace as described above, an electric heater is generally used for heating, the atmosphere gas discharged from the high-temperature sintering zone 2 is burned for safety, and the combustion gas is used for a canopy hood or the like. Has been released through.
【０００８】このように、雰囲気ガスとして使用したガ
スの燃焼熱は何ら再利用されることなく炉外に放出され
ているのが現状であり、エネルギの有効活用の点から問
題がある。本発明はこのような点に鑑み、雰囲気ガスの
燃焼熱を有効に利用するようにした焼結炉を得ることを
目的とする。As described above, the combustion heat of the gas used as the atmospheric gas is discharged out of the furnace without being reused at all, and there is a problem in terms of effective utilization of energy. SUMMARY OF THE INVENTION In view of the foregoing, an object of the present invention is to provide a sintering furnace which makes effective use of the combustion heat of atmospheric gas.
【０００９】[0009]
【課題を解決するための手段】本発明は、水素ガスを主
成分とする還元ガスを雰囲気ガスとして使用する原子燃
料用焼結炉において、成形体を高温度で緻密化する高温
焼結ゾーンから排出される雰囲気ガスを、粉末に添加さ
れた物質を除去し且つＯ／Ｕの調整を行うバーンオフゾ
ーンの金属マッフル外表面のバーナに導入して燃焼さ
せ、その燃焼熱によってバーンオフゾーンの金属マッフ
ルを外表面より加熱することを特徴とする。SUMMARY OF THE INVENTION The present invention relates to a sintering furnace for nuclear fuel using a reducing gas mainly composed of hydrogen gas as an atmospheric gas. The exhausted atmospheric gas is introduced into a burner on the outer surface of a metal muffle in a burn-off zone for removing substances added to the powder and adjusting O / U, and is burned. The muffle is heated from the outer surface.
【００１０】[0010]
【発明の実施の形態】以下、図１乃至図３を参照して、
本発明の実施の形態について説明する。なお、図中、図
４及び図５と同一部分には同一符号を付しその詳細な説
明は省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
An embodiment of the present invention will be described. In the drawings, the same portions as those in FIGS. 4 and 5 are denoted by the same reference numerals, and detailed description thereof will be omitted.
【００１１】図１及び図２は、本発明に係る焼結炉の概
略構成を示す平断面図および側面図であって、焼結炉は
従来と同様にバーンオフゾーン１、高温焼結ゾーン２、
冷却ゾーン３及び徐冷ゾーン４から構成されている。FIGS. 1 and 2 are a plan view and a side view, respectively, showing a schematic configuration of a sintering furnace according to the present invention. ,
It comprises a cooling zone 3 and a slow cooling zone 4.
【００１２】ところで、特に図２に示すように、高温焼
結ゾーン２のバーンオフゾーン側から排出される雰囲気
ガスを燃焼させ外気中に放散させるため天蓋フード１１
の下方に開口している雰囲気ガス出口管１０から、バル
ブ１２の上流側において３本の導管１３ａ，１３ｂ，１
３ｃが分岐導出され、その導管１３ａ，１３ｃがバーン
オフゾーン１のバーンオフゾーン用金属マッフル１９の
側壁の外表面に設けられた側面加熱バーナ１４に接続さ
れ、導管１３ｂがバーンオフゾーン１のバーンオフゾー
ン用金属マッフル１９の頂壁の外表面に設けられた上面
加熱バーナ１５が接続されている。上記各導管１３ａ，
１３ｂ，１３ｃにはそれぞれ流量調節バルブ１６ａ，１
６ｂ，１６ｃが設けられるとともに、上記バーンオフゾ
ーン１には、そのバーンオフゾーン１から排出される燃
焼ガスを天蓋フード１１の下方に放出する排気管１７が
接続されている。By the way, as shown in FIG. 2 in particular, a canopy hood 11 for burning atmospheric gas discharged from the burn-off zone side of the high-temperature sintering zone 2 and dispersing it into the outside air.
The three conduits 13a, 13b, 1 are connected upstream of the valve 12 from the atmosphere gas outlet pipe 10 opening below the
3c is branched and led out, and its conduits 13a and 13c are connected to the side heating burner 14 provided on the outer surface of the side wall of the burn-off zone metal muffle 19 in the burn-off zone 1. An upper surface heating burner 15 provided on the outer surface of the top wall of the off-zone metal muffle 19 is connected. Each of the conduits 13a,
13b and 13c have flow control valves 16a and 1 respectively.
6 b and 16 c are provided, and an exhaust pipe 17 for discharging combustion gas discharged from the burn-off zone 1 below the canopy hood 11 is connected to the burn-off zone 1.
【００１３】また、バーンオフゾーン１内の温度は、図
３に示すように、温度コントローラ１８に入力されてお
り、その温度コントローラ１８からの出力信号によって
前記バルブ１２、及び流量制御バルブ１６ａ，１６ｂ，
１６ｃの開度制御が行われるようにしてある。The temperature in the burn-off zone 1 is input to a temperature controller 18 as shown in FIG. 3, and the output signal from the temperature controller 18 causes the valve 12 and the flow control valves 16a, 16b to be output. ,
The opening degree control of 16c is performed.
【００１４】しかして、高温焼結ゾーン２から排出され
る雰囲気ガスは、雰囲気ガス出口管１０及び各導管１３
ａ，１３ｂ，１３ｃを経て、それぞれ側面加熱バーナ１
４或は上面加熱バーナ１５に供給され、各バーナにおい
て燃焼させられ、従来と同様にバーンオフゾーン１内が
例えば６００〜８００℃程度に加熱される。そして、上
記バーンオフゾーン２で燃焼した燃焼ガスは排気管１７
によって天蓋フード１１の下方に放出される。したがっ
て、バーンオフゾーン１には従来のように電気ヒータを
設ける必要がなく、雰囲気ガスの燃焼により加熱を行う
ことができ、雰囲気ガスの燃焼熱を有効に利用できる。The atmosphere gas discharged from the high-temperature sintering zone 2 is supplied to the atmosphere gas outlet pipe 10 and each of the conduits 13.
a, 13b, 13c, and then the side heating burner 1
4 or the upper surface heating burner 15, is burned in each burner, and the inside of the burn-off zone 1 is heated to, for example, about 600 to 800 ° C. as in the related art. Then, the combustion gas burned in the burn-off zone 2 is supplied to the exhaust pipe 17.
As a result, it is discharged below the canopy hood 11. Therefore, it is not necessary to provide an electric heater in the burn-off zone 1 as in the prior art, and heating can be performed by burning the atmosphere gas, and the combustion heat of the atmosphere gas can be used effectively.
【００１５】この場合、上記側面加熱バーナ１４及び上
面加熱バーナ１５への雰囲気ガスの流量は温度コントロ
ーラ１８を介して流量制御バルブ１６ａ，１６ｂ，１６
ｃによって制御され、炉内温度が所定値になるようにし
てある。また、雰囲気ガス出口管１０に設けられている
バルブ１２も上記温度コントローラ１８によって開閉制
御され、排気ガスの総流量がコントロールされ炉内圧が
一定値に保持される。In this case, the flow rate of the atmospheric gas to the side surface heating burner 14 and the upper surface heating burner 15 is controlled via flow rate control valves 16a, 16b, 16 via a temperature controller 18.
c, so that the furnace temperature becomes a predetermined value. The valve 12 provided in the atmosphere gas outlet pipe 10 is also controlled to open and close by the temperature controller 18 so that the total flow rate of the exhaust gas is controlled and the furnace pressure is maintained at a constant value.
【００１６】[0016]
【発明の効果】以上説明したように、本発明は、成形体
を高温度で緻密化する高温焼結ゾーンから排出される雰
囲気ガスを、バーンオフゾーンの金属マッフル外表面の
バーナに導入して燃焼させ、その燃焼熱によってバーン
オフゾーンの金属マッフルを外表面より加熱するように
したので、雰囲気ガスとして使用したガスの燃焼熱をバ
ーンオフゾーンの加熱に有効に利用することができ、エ
ネルギの有効活用を図ることができる。As described above, according to the present invention, the atmosphere gas discharged from the high-temperature sintering zone for densifying the compact at a high temperature is introduced into the burner on the outer surface of the metal muffle in the burn-off zone. Because the metal muffle in the burn-off zone is heated from the outer surface by the combustion heat, the combustion heat of the gas used as the atmosphere gas can be effectively used for heating the burn-off zone, and the energy Effective utilization can be achieved.
【図１】本発明の焼結炉の概略構成を示す平断面図。FIG. 1 is a plan sectional view showing a schematic configuration of a sintering furnace of the present invention.
【図２】本発明の焼結炉の概略構成を示す側面図。FIG. 2 is a side view showing a schematic configuration of a sintering furnace of the present invention.
【図３】本発明の焼結炉におけるバーンオフゾーンの温
度調節機構の概略構成図。FIG. 3 is a schematic configuration diagram of a temperature control mechanism of a burn-off zone in the sintering furnace of the present invention.
【図４】従来の焼結炉のうちバーンオフゾーン内熱型の
焼結炉の概略構成を示す平断面図。FIG. 4 is a plan sectional view showing a schematic configuration of a heat type sintering furnace in a burn-off zone among conventional sintering furnaces.
【図５】従来の焼結炉のうちバーンオフゾーン外熱型の
焼結炉の概略構成を示す平断面図。FIG. 5 is a plan sectional view showing a schematic configuration of a sintering furnace of a heat-off type outside a burn-off zone among conventional sintering furnaces.
１ バーンオフゾーン ２ 高温焼結ゾーン ３ 冷却ゾーン ４ 徐冷ゾーン ５，６，７ 加熱用ヒータ ９ 雰囲気ガス入口管 １０ 雰囲気ガス出口管 １１ 天蓋フード １２ バルブ １３ａ，１３ｂ，１３ｃ 導管 １４ 側面加熱バーナ １５ 上面加熱バーナ １６ａ，１６ｂ，１６ｃ 流量調節バルブ １８ 温度コントローラ １９ ハニンオフゾーン用金属マッフル ２０ 冷却ゾーン用金属マッフル DESCRIPTION OF SYMBOLS 1 Burn-off zone 2 High-temperature sintering zone 3 Cooling zone 4 Slow cooling zone 5, 6, 7 Heater 9 Atmospheric gas inlet pipe 10 Atmospheric gas outlet pipe 11 Canopy hood 12 Valve 13a, 13b, 13c Duct 14 Side heating burner 15 Top surface heating burner 16a, 16b, 16c Flow control valve 18 Temperature controller 19 Metal muffle for Hanin off zone 20 Metal muffle for cooling zone
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【手続補正書】[Procedure amendment]
【提出日】平成１１年２月１９日（１９９９．２．１
９）[Submission date] February 19, 1999 (1999.2.1
9)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Correction target item name] Brief description of drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の焼結炉の概略構成を示す平断面図。FIG. 1 is a plan sectional view showing a schematic configuration of a sintering furnace of the present invention.
【図２】本発明の焼結炉の概略構成を示す側面図。FIG. 2 is a side view showing a schematic configuration of a sintering furnace of the present invention.
【図３】本発明の焼結炉におけるバーンオフゾーンの温
度調節機構の概略構成図。FIG. 3 is a schematic configuration diagram of a temperature control mechanism of a burn-off zone in the sintering furnace of the present invention.
【図４】従来の焼結炉のうちバーンオフゾーン内熱型の
焼結炉の概略構成を示す平断面図。FIG. 4 is a plan sectional view showing a schematic configuration of a heat type sintering furnace in a burn-off zone among conventional sintering furnaces.
【図５】従来の焼結炉のうちバーンオフゾーン外熱型の
焼結炉の概略構成を示す平断面図。FIG. 5 is a plan sectional view showing a schematic configuration of a sintering furnace of a heat-off type outside a burn-off zone among conventional sintering furnaces.
【符号の説明】 １ バーンオフゾーン ２ 高温焼結ゾーン ３ 冷却ゾーン ４ 徐冷ゾーン ５，６，７ 加熱用ヒータ ９ 雰囲気ガス入口管 １０ 雰囲気ガス出口管 １１ 天蓋フード １２ バルブ １３ａ，１３ｂ，１３ｃ 導管 １４ 側面加熱バーナ １５ 上面加熱バーナ １６ａ，１６ｂ，１６ｃ 流量調節バルブ １８ 温度コントローラ １９ ハーンオフゾーン用金属マッフル ２０ 冷却ゾーン用金属マッフル[Description of Signs] 1 Burn-off zone 2 High-temperature sintering zone 3 Cooling zone 4 Slow cooling zone 5, 6, 7 Heater 9 Atmospheric gas inlet pipe 10 Atmospheric gas outlet pipe 11 Canopy hood 12 Valve 13a, 13b, 13c Conduit Reference Signs List 14 Side heating burner 15 Top heating burner 16a, 16b, 16c Flow control valve 18 Temperature controller 19 Metal muffle for hard off zone 20 Metal muffle for cooling zone
【手続補正３】[Procedure amendment 3]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図１[Correction target item name] Fig. 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図１】 FIG.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図５[Correction target item name] Fig. 5
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図５】 ─────────────────────────────────────────────────────
FIG. 5 ────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１１年１０月７日（１９９９．１０．
７）[Submission date] October 7, 1999 (1999.10.
7)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項２[Correction target item name] Claim 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
Claims (2)
ガスとして使用する原子燃料用焼結炉において、雰囲気
ガス出口管から排出し燃焼させる雰囲気ガスを、粉末に
添加された物質を除去し且つＯ／Ｕの調整を行うバーン
オフゾーンの金属マッフルの外表面のバーナに導入して
燃焼させ、その燃焼熱によって上記バーンオフゾーンの
金属マッフルを外表面より加熱することを特徴とする、
原子燃料用焼結炉。In a sintering furnace for nuclear fuel using a reducing gas mainly composed of hydrogen gas as an atmosphere gas, an atmosphere gas discharged from an atmosphere gas outlet pipe and burned is removed by removing a substance added to the powder. In addition, the burner is introduced into the burner on the outer surface of the metal muffle in the burn-off zone for adjusting the O / U and burned, and the heat of combustion burns the metal muffle in the burn-off zone from the outer surface.
Sintering furnace for nuclear fuel.
のバーナに導入される雰囲気ガスの流量を調整すること
によってバーンオフゾーンの温度コントロールを行うと
ともに、さらに別に設けた排気用パイプのバルブの制御
によって焼結路から排出する雰囲気の総流量をコントロ
ールし炉内圧を一定に保持することを特徴とする、請求
項１記載の原子燃料用焼結炉。2. The temperature control of the burn-off zone by adjusting the flow rate of the atmosphere gas introduced into the burner on the outer surface of the metal muffle in the burn-off zone, and the control of a valve of a separately provided exhaust pipe. 2. The sintering furnace for a nuclear fuel according to claim 1, wherein the total flow rate of the atmosphere discharged from the sintering path is controlled to maintain a constant furnace pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10316164A JP3017981B1 (en) | 1998-11-06 | 1998-11-06 | Sintering furnace for nuclear fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10316164A JP3017981B1 (en) | 1998-11-06 | 1998-11-06 | Sintering furnace for nuclear fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3017981B1 JP3017981B1 (en) | 2000-03-13 |
| JP2000147188A true JP2000147188A (en) | 2000-05-26 |
Family
ID=18074006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10316164A Expired - Fee Related JP3017981B1 (en) | 1998-11-06 | 1998-11-06 | Sintering furnace for nuclear fuel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3017981B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006145103A (en) * | 2004-11-19 | 2006-06-08 | Nuclear Fuel Ind Ltd | Heat treating furnace for manufacturing fuel compact of high-temperature gas furnace |
-
1998
- 1998-11-06 JP JP10316164A patent/JP3017981B1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006145103A (en) * | 2004-11-19 | 2006-06-08 | Nuclear Fuel Ind Ltd | Heat treating furnace for manufacturing fuel compact of high-temperature gas furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3017981B1 (en) | 2000-03-13 |
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