JPH0222630Y2 - - Google Patents
Info
- Publication number
- JPH0222630Y2 JPH0222630Y2 JP3836784U JP3836784U JPH0222630Y2 JP H0222630 Y2 JPH0222630 Y2 JP H0222630Y2 JP 3836784 U JP3836784 U JP 3836784U JP 3836784 U JP3836784 U JP 3836784U JP H0222630 Y2 JPH0222630 Y2 JP H0222630Y2
- Authority
- JP
- Japan
- Prior art keywords
- quartz tube
- furnace
- furnace body
- elevating
- fired
- 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
- 239000010453 quartz Substances 0.000 claims description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 230000003028 elevating effect Effects 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は加熱時に腐食性ガスを発生する窯業原
料を脱硝、脱酸の目的で仮焼成する場合等に使用
される電気炉に関するものである。[Detailed description of the invention] (Field of industrial application) The present invention relates to an electric furnace used for calcining ceramic raw materials that generate corrosive gas when heated for the purpose of denitrification and deoxidation. .
(従来技術)
従来、加熱時に腐食性ガスを発生するジルコニ
アのような窯業原料の仮焼成には炉体内部に耐腐
食性に優れた石英管を水平に配置した電気炉が用
いられており、さやと呼ばれる容器に入れた窯業
原料をこの石英管の内部に収納して電気加熱し、
発生する腐食性ガスを石英管の端面に連通させた
煙突から炉外へ排出するようになつている。とこ
ろが石英管の下側面には大きい重量が作用するた
めに石英管にクラツクが入り易いこと、円筒形の
石英管に直方体のさやを入れるために石英管内に
無駄なスペースが生じて収容量が小さいこと、炉
体の腐食を防止する目的で石英管の端部を炉体か
ら突出させる必要があるため石英管の内部の温度
分布が不均一となること、石英管の内部へのさや
の出し入れが行いにくく作業性が悪いこと等の多
くの問題点があるうえ、作業員がさやを取出す際
に石英管内部の腐食性のガスを吸込み易いという
衛生上の問題点もあつた。(Prior art) Conventionally, an electric furnace with a quartz tube with excellent corrosion resistance placed horizontally inside the furnace body has been used to pre-sinter ceramic raw materials such as zirconia, which generate corrosive gas when heated. Ceramic raw materials in a container called a pod are stored inside this quartz tube and heated electrically.
The corrosive gas generated is discharged outside the furnace through a chimney that communicates with the end face of the quartz tube. However, because a large weight acts on the lower surface of the quartz tube, cracks are likely to occur in the quartz tube, and since a rectangular sheath is inserted into a cylindrical quartz tube, wasted space is created inside the quartz tube, resulting in a small storage capacity. In addition, the end of the quartz tube needs to protrude from the furnace body in order to prevent corrosion of the furnace body, so the temperature distribution inside the quartz tube becomes uneven, and it is difficult to put the pod in and out of the quartz tube. In addition to many problems such as being difficult to perform and poor workability, there was also a sanitary problem in that workers were likely to inhale corrosive gas inside the quartz tube when removing the pods.
(考案の目的)
本考案はこのような従来の問題点を解決し、寿
命が長く、収容量が大で作業性が良好で衛生上の
問題を生ずることもない電気炉を目的として完成
されたものである。(Purpose of the invention) This invention was completed with the aim of solving these conventional problems and creating an electric furnace that has a long life, has a large capacity, has good workability, and does not cause hygiene problems. It is something.
(考案の構成)
本考案は上端に耐腐食性の蓋体を備えた被焼成
物収納用の石英管を炉体内に該石英管の下端を昇
降式台車により封鎖される炉底に臨ませて垂直に
立設したことを特徴とするものであり、以下、図
示の実施例により詳細に説明する。(Structure of the invention) The invention consists of a quartz tube with a corrosion-resistant lid at the upper end for storing the materials to be fired, which is placed inside the furnace body so that the lower end of the quartz tube faces the furnace bottom, which is closed off by an elevating trolley. It is characterized by being vertically installed, and will be described in detail below with reference to illustrated embodiments.
図中1はSiC発熱体のようなヒータ2によつて
電気加熱される炉体であり、3は該炉体1の内部
に垂直に立設された被焼成物収納用の石英管であ
る。石英管3の下端は炉底4に透設された透孔5
に臨ませて固定されており、また、石英管3の上
端にはアルミナ耐火物のような耐腐食性、非通気
性材料から成る煙突6付きの蓋体7が備付けてあ
つて石英管3の内部を炉体1の内部と隔離してい
る。炉体1の下方部には昇降式台車8が設けられ
ており、シリンダその他の適宜の昇降機構9によ
り昇降式台車8をその上面が炉底4を封鎖する高
さまで持上げることができる。昇降式台車8の上
面には各石英管3に対応する位置にさや置台10
が突設されており、石英管3の内部に収納され得
る大きさの円筒状のさや11がその内部に被焼成
物を充填されたうえ該さや置台10上に複数段積
上げられる。なお、12は最上段のさや11に被
冠されるさや蓋、13は昇降式台車8の上面に配
設された炉底閉塞用の炉材、14は台車引出し用
のレールである。 In the figure, 1 is a furnace body electrically heated by a heater 2 such as a SiC heating element, and 3 is a quartz tube erected vertically inside the furnace body 1 for storing the object to be fired. The lower end of the quartz tube 3 is a through hole 5 made in the hearth bottom 4.
In addition, the top end of the quartz tube 3 is equipped with a lid 7 with a chimney 6 made of a corrosion-resistant, non-breathable material such as alumina refractory. The inside is isolated from the inside of the furnace body 1. An elevating type truck 8 is provided in the lower part of the furnace body 1, and the elevating type truck 8 can be lifted by a cylinder or other suitable elevating mechanism 9 to a height where its upper surface closes the furnace bottom 4. On the top surface of the elevating cart 8, there is a sheath stand 10 at a position corresponding to each quartz tube 3.
A cylindrical sheath 11 of a size that can be housed inside the quartz tube 3 is filled with a material to be fired, and then stacked in multiple stages on a sheath table 10. In addition, 12 is a sheath lid that is placed on the uppermost sheath 11, 13 is a furnace material for closing the bottom of the hearth disposed on the upper surface of the elevating truck 8, and 14 is a rail for pulling out the truck.
このように構成されたものは、昇降式台車8を
レール14上に引出し被焼成物が充填されたさや
11を昇降式台車8のさや置台10の上面に複数
段積上げたうえ炉体1の直下から昇降式台車8と
ともに昇降機構9により上昇させれば、さや11
は炉体1の内部に垂直に立設された上端に耐腐食
性の蓋体7を備えた被焼成物収納用の石英管3の
内部に収納されるとともに昇降式台車8の炉底閉
塞用の炉材13が炉底4を封鎖して石英管3の下
端を密封する。このようにして被焼成物は電気加
熱される炉体1の石英管3の内部に封入された状
態で仮焼成され、この際に生ずる腐食性ガスは耐
腐食性に優れた石英管3により炉体1との接触を
防止されつつ煙突6からガス処理装置へ導かれて
処理される。この焼成中、石英管3には全く荷重
が作用することがないのでクラツク発生の虞がな
く、また石英管3は全体が炉体1内に収容されて
いるので温度分布の不均一を生ずることもなく、
従つて、有効な均熱領域を広くとれる。このよう
にして仮焼成が終了後は昇降式台車8を降下させ
ればさや11は容易に炉体1の下方へ取出され、
この際に作業員が腐食性ガスを吸い込む虞れがな
い。また、この際に外気が急激に炉体1の内部に
流入するが石英管3は耐熱衝撃性にも優れている
ために破壊することもない。 In this structure, the elevating cart 8 is pulled out onto the rail 14, the pods 11 filled with the materials to be fired are stacked in multiple stages on the upper surface of the sheath stand 10 of the elevating cart 8, and then placed directly under the furnace body 1. If it is raised by the lifting mechanism 9 together with the lifting trolley 8, the sheath 11
is housed inside a quartz tube 3 for storing the objects to be fired, which is vertically installed inside the furnace body 1 and has a corrosion-resistant lid 7 at the upper end, and is also used for closing the bottom of the furnace with an elevating cart 8. The furnace material 13 seals the furnace bottom 4 and the lower end of the quartz tube 3. In this way, the object to be fired is temporarily fired while being sealed inside the quartz tube 3 of the electrically heated furnace body 1, and the corrosive gas generated at this time is removed from the furnace by the quartz tube 3, which has excellent corrosion resistance. The gas is guided from the chimney 6 to the gas treatment device and treated while being prevented from coming into contact with the body 1. During this firing, no load is applied to the quartz tube 3, so there is no risk of cracking, and since the quartz tube 3 is entirely housed within the furnace body 1, there is no possibility of uneven temperature distribution. Without any
Therefore, the effective soaking area can be widened. After the preliminary firing is completed in this way, by lowering the elevating cart 8, the pod 11 can be easily taken out below the furnace body 1.
There is no risk of workers inhaling corrosive gas at this time. Further, at this time, outside air suddenly flows into the interior of the furnace body 1, but the quartz tube 3 has excellent thermal shock resistance, so it does not break.
(考案の効果)
本考案は以上の説明からも明らかなように、炉
体内に石英管を垂直に立設したので石英管に荷重
が作用せずクラツク発生の虞れがないものである
うえ均一な温度分布領域が広くとれ、また、挿入
及び取出し作業が容易で作業員が腐食性ガスを吸
込む虞れもないものである。更にまた、本考案は
石英管の断面形状とさやの断面形状とを相似形と
することにより石英管内の無駄なスペースを無く
して被焼成物の収納容量を約2倍に増大されるこ
とができるものであり、従来のこの種電気炉の問
題点を一掃したものとしてその実用的価値は極め
て大なものである。(Effects of the invention) As is clear from the above explanation, this invention has a quartz tube vertically installed inside the furnace body, so no load is applied to the quartz tube, so there is no risk of cracks occurring, and it is uniform. It has a wide temperature distribution area, is easy to insert and remove, and there is no risk of workers inhaling corrosive gas. Furthermore, by making the cross-sectional shape of the quartz tube and the cross-sectional shape of the sheath similar, the present invention eliminates wasted space within the quartz tube and can approximately double the storage capacity of the materials to be fired. Its practical value is extremely great as it eliminates the problems of conventional electric furnaces of this type.
第1図は本考案の実施例を示す一部切欠正面
図、第2図は同じく一部切欠平面図である。
1……炉体、3……石英管、4……炉底、7…
…蓋体、8……昇降式台車。
FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway plan view. 1... Furnace body, 3... Quartz tube, 4... Hearth bottom, 7...
...Lid body, 8...Elevating trolley.
Claims (1)
用の石英管3を炉体1内に該石英管3の下端を昇
降式台車8により封鎖される炉底4に臨ませて垂
直に立設したことを特徴とする電気炉。 A quartz tube 3 for storing objects to be fired, which is equipped with a corrosion-resistant lid 7 at the upper end, is vertically placed in the furnace body 1 with the lower end of the quartz tube 3 facing the furnace bottom 4 which is closed by an elevating trolley 8. An electric furnace characterized by being installed vertically.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3836784U JPS60151092U (en) | 1984-03-16 | 1984-03-16 | Electric furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3836784U JPS60151092U (en) | 1984-03-16 | 1984-03-16 | Electric furnace |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60151092U JPS60151092U (en) | 1985-10-07 |
JPH0222630Y2 true JPH0222630Y2 (en) | 1990-06-19 |
Family
ID=30545308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3836784U Granted JPS60151092U (en) | 1984-03-16 | 1984-03-16 | Electric furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60151092U (en) |
-
1984
- 1984-03-16 JP JP3836784U patent/JPS60151092U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60151092U (en) | 1985-10-07 |
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