JPH0445040Y2 - - Google Patents
Info
- Publication number
- JPH0445040Y2 JPH0445040Y2 JP1986017285U JP1728586U JPH0445040Y2 JP H0445040 Y2 JPH0445040 Y2 JP H0445040Y2 JP 1986017285 U JP1986017285 U JP 1986017285U JP 1728586 U JP1728586 U JP 1728586U JP H0445040 Y2 JPH0445040 Y2 JP H0445040Y2
- Authority
- JP
- Japan
- Prior art keywords
- heating
- slag
- metal
- heating means
- removal
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 42
- 239000002184 metal Substances 0.000 claims description 42
- 239000002893 slag Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 16
- 230000008018 melting Effects 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 16
- 238000007654 immersion Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 description 54
- 239000000919 ceramic Substances 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- -1 aluminum and zinc Chemical class 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Furnace Charging Or Discharging (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
【考案の詳細な説明】
技術分野
本考案は、金属溶解炉におけるノロを除去する
ための構造に関する。[Detailed Description of the Invention] Technical Field The present invention relates to a structure for removing slag in a metal melting furnace.
背景技術
アルミニウムおよび亜鉛などの金属を溶解し、
あるいはまた溶解した金属を貯留して保持する金
属溶解炉では、その溶解した金属の液面の上下に
わたつて延びる棒状体である浸漬ヒータなどの加
熱手段が、溶解金属に浸漬される。この加熱手段
の外周面は耐久性に優れたセラミツク製である。Background technology Melting metals such as aluminum and zinc,
Alternatively, in a metal melting furnace that stores and holds molten metal, a heating means such as an immersion heater, which is a rod-shaped body extending above and below the liquid level of the molten metal, is immersed in the molten metal. The outer peripheral surface of this heating means is made of ceramic, which has excellent durability.
考案が解決すべき問題点
このように金属溶解炉では、加熱手段の外周面
に溶融金属表面で金属酸化物であるノロが付着す
る。このノロの加熱手段への付着量は徐々に増大
する。加熱手段の外周面にノロが付着している状
態で加熱手段を溶湯から上昇すると、その加熱手
段の外周面であるセラミツクとノロと、の熱膨張
率との違いに起因して、加熱手段のセラミツク製
外周面に亀裂を生じて破損する。Problems to be Solved by the Invention As described above, in the metal melting furnace, slag, which is a metal oxide, adheres to the surface of the molten metal on the outer peripheral surface of the heating means. The amount of this slag adhering to the heating means gradually increases. When the heating means is lifted out of the molten metal with slag attached to the outer circumferential surface of the heating means, the difference in thermal expansion coefficient between the ceramic that is the outer circumferential surface of the heating means and the slag causes the heating means to Cracks occur on the ceramic outer surface and damage occurs.
本考案の目的は、金属溶解炉において、加熱手
段などのような棒状体である浸漬ヒータにノロが
付着することを防ぐようにした金属溶解炉のノロ
除去構造を提供することである。 An object of the present invention is to provide a slag removal structure for a metal melting furnace that prevents slag from adhering to an immersion heater, which is a rod-shaped body such as a heating means, in a metal melting furnace.
問題点を解決するための手段
本考案は、溶融金属の液面の上下にわたつて延
びる浸漬ヒータを外囲し、その浸漬ヒータの外周
面に接触して液面に浮ぶ除去部材を設けたことを
特徴とする金属溶解炉のノロ除去構造である。Means for Solving the Problems The present invention surrounds an immersion heater that extends above and below the liquid level of molten metal, and provides a removal member that comes into contact with the outer peripheral surface of the immersion heater and floats on the liquid surface. This is a slag removal structure for a metal melting furnace that is characterized by:
作 用
本考案に従えば、除去部材は液面の上下の変動
に伴なつて浸漬ヒータの外周面に接触しつつ上下
に変位する。したがつて浸漬ヒータの外周面にノ
ロが付着することが防がれ、たとえ付着してもか
き落とされる。また溶解した金属に浸漬されてい
る浸漬ヒータを上方に取出す際に、除去部材は溶
湯の液面に浮かんでおり、したがつて浸漬ヒータ
の外周面にノロが付着して棒状体と一緒に上昇す
ることが避けられる。そのため、浸漬ヒータの外
周面の材料とノロとの熱膨張率の違いに起因して
浸漬ヒータの外周面に亀裂を生じるなどの破損が
防がれる。Function According to the present invention, the removal member is displaced up and down while contacting the outer circumferential surface of the immersion heater as the liquid level changes up and down. Therefore, slag is prevented from adhering to the outer peripheral surface of the immersion heater, and even if it does, it is scraped off. In addition, when the immersion heater immersed in molten metal is taken out upward, the removal member floats on the surface of the molten metal, and slag adheres to the outer peripheral surface of the immersion heater and rises together with the rod-shaped body. can be avoided. Therefore, damage such as cracking on the outer circumferential surface of the immersion heater due to the difference in coefficient of thermal expansion between the material of the outer circumferential surface of the immersion heater and the slag is prevented.
実施例
第１図は本考案の一実施例の断面図であり、第
２図はその平面図であり、第３図は第２図の切断
面線−から見た断面図である。第１図は第２
図の切断面線−から見た断面を示す。ダイキ
ヤストなどを行なうためにアルミニウムおよび亜
鉛などのような溶解した金属１は、本件金属溶解
炉２に保持される。この溶解炉２は、耐火物から
成り溶解された金属が注湯される注湯口３と、そ
の注湯された溶解した金属を導く注湯室４と、溶
融した金属を加熱して保持する加熱室５と、加熱
室５からの金属をくみ出すための汲出室６とを有
する。加熱室５と汲出室６とは、連通孔７によつ
て連通される。また注湯室４と加熱室５とは、ノ
ロなどの不純物を除去するためのフイルタを介し
て金属１の下部で連通している。Embodiment FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along the cutting plane line - in FIG. 2. Figure 1 is 2
A cross section viewed from the cutting plane line - in the figure is shown. Molten metals 1 such as aluminum and zinc are held in the metal melting furnace 2 for die casting or the like. The melting furnace 2 consists of a pouring port 3 made of refractory material into which molten metal is poured, a pouring chamber 4 for guiding the poured molten metal, and a heating chamber 4 for heating and holding the molten metal. It has a chamber 5 and a pumping chamber 6 for pumping out metal from the heating chamber 5. The heating chamber 5 and the pumping chamber 6 communicate with each other through a communication hole 7. Further, the pouring chamber 4 and the heating chamber 5 communicate with each other below the metal 1 through a filter for removing impurities such as slag.
加熱室５には、棒状の浸漬ヒータである加熱手
段８が浸漬される。この加熱手段８の上部は、加
熱室５を覆うカバー３９に固定される。加熱手段
８は、耐久性のあるセラミツクス製である有底直
円筒状加熱管９と、その加熱管９内に設けられる
同心の仕切筒１０と、仕切筒１０内に設けられる
ノズル１１とを有する。ノズル１１には、都市ガ
スなどのガス燃料が供給される。ノズル１１の外
周面と仕切筒１０の内周面との間の空間１２に
は、燃焼用空気が供給される。燃焼排ガスは、加
熱管９の内周面と仕切筒１０の外周面との間の空
間１３を介してカバー３９の上部の排気管１４か
ら外部に放散される。カバー３９の側部には、蓋
１５が設けられる。加熱管９は、金属１の液面１
ａの上下にわたつて鉛直に延びる。金属１の酸化
物であるノロが加熱管９および金属溶解炉２の加
熱室５の内周面に付着することを防ぐために、除
去部材１６〜１９が液面１ａに浮かんで設けられ
る。 A heating means 8, which is a rod-shaped immersion heater, is immersed in the heating chamber 5. The upper part of this heating means 8 is fixed to a cover 39 that covers the heating chamber 5. The heating means 8 includes a bottomed right cylindrical heating tube 9 made of durable ceramics, a concentric partition tube 10 provided within the heating tube 9, and a nozzle 11 provided within the partition tube 10. . Gas fuel such as city gas is supplied to the nozzle 11 . Combustion air is supplied to the space 12 between the outer peripheral surface of the nozzle 11 and the inner peripheral surface of the partition tube 10 . The combustion exhaust gas is radiated to the outside from the exhaust pipe 14 in the upper part of the cover 39 via the space 13 between the inner circumferential surface of the heating tube 9 and the outer circumferential surface of the partition tube 10 . A lid 15 is provided on the side of the cover 39. The heating tube 9 is connected to the liquid level 1 of the metal 1.
It extends vertically above and below a. In order to prevent slag, which is an oxide of the metal 1, from adhering to the heating tube 9 and the inner peripheral surface of the heating chamber 5 of the metal melting furnace 2, removal members 16 to 19 are provided floating on the liquid surface 1a.
第４図は、除去部材１６，１７の斜視図であ
る。除去部材１６は、板状の底部２０と、その底
部２０の外周に連なり上方に延びる立上り部２１
とを有する。もう１つの除去部材１７も同様にし
て、底部２２と、立上り部２３とを有する。除去
部材１６，１７、は加熱管９を外囲するために、
大略的に半円弧状の凹所２４，２５をそれぞれ有
する。この凹所２４，２５における立上り部２
１，２３は、加熱管９の外周面に接触することが
でき、この状態で除去部材１６，１７には間〓ｌ
が存在する。もう１つの加熱手段８に関する除去
部材１８，１９は、加熱室５の鉛直な面３１に関
して面対称に構成される。除去部材１７，１８の
相互間および除去部材１８，１９の相互間にもま
た間〓が存在する。これらの間〓によつて除去部
材１６〜１９の熱膨張が許容され、除去部材１６
〜１９および加熱管９における熱応力の発生が防
がれ、ひび割れなどの損傷が防がれる。 FIG. 4 is a perspective view of the removal members 16 and 17. The removal member 16 includes a plate-shaped bottom portion 20 and a rising portion 21 that extends upward from the outer periphery of the bottom portion 20.
and has. Similarly, the other removal member 17 has a bottom portion 22 and a rising portion 23. The removal members 16 and 17 are arranged to surround the heating tube 9.
It has roughly semicircular arc-shaped recesses 24 and 25, respectively. Rising portions 2 in these recesses 24 and 25
1 and 23 can come into contact with the outer peripheral surface of the heating tube 9, and in this state, the removal members 16 and 17 have a gap between them.
exists. The removal members 18 and 19 related to the other heating means 8 are configured symmetrically with respect to the vertical plane 31 of the heating chamber 5 . There is also a gap between the removal members 17, 18 and between the removal members 18, 19. Thermal expansion of the removal members 16 to 19 is allowed by the space between them, and the removal members 16 to 19 are allowed to expand thermally.
-19 and heating tube 9 are prevented from generating thermal stress, and damage such as cracking is prevented.
除去部材１６，１７は、加熱管９に前述のよう
に接触することができ、また金属溶解炉２の加熱
室５における内周面に接触することができ、しか
もこの除去部材１６，１７は溶解した金属１の液
面１ａ上に浮かんで、その液面１ａの上下の変動
に伴なつて変動する。したがつて加熱管９の外周
面および金属溶解炉２の加熱室５における内周面
にノロが付着することが防がれるとともに、たと
え付着しても除去される。そのため加熱管９と加
熱室５との耐久性が向上される。またこの除去部
材１６，１７は、溶融金属１の液面１ａ上に浮か
んでいるので、その液面１ａが空気と接触して酸
化することが防がれ、ノロの発生が抑制されると
ともに、除去部材１６，１７の断熱作用によつて
熱放散を防ぎ、金属溶解炉を小形化し、省エネル
ギ効果を達成することができる。また加熱手段８
を液面１ａから上方に取出す際に、その加熱管９
の外周面にノロが付着することが防がれ、したが
つて加熱管９の外周面からのノロの除去作業をす
る必要がなくなる。除去部材１６，１７をばねに
よつて相互の近接方向に付勢し、加熱管９の外周
面に接触させてもよい。 The removal members 16 and 17 can contact the heating tube 9 as described above, and can also contact the inner circumferential surface of the heating chamber 5 of the metal melting furnace 2, and these removal members 16 and 17 The metal 1 floats on the liquid level 1a and fluctuates as the liquid level 1a changes up and down. Therefore, slag is prevented from adhering to the outer peripheral surface of the heating tube 9 and the inner peripheral surface of the heating chamber 5 of the metal melting furnace 2, and even if it does, it is removed. Therefore, the durability of the heating tube 9 and the heating chamber 5 is improved. In addition, since the removal members 16 and 17 float on the liquid surface 1a of the molten metal 1, the liquid surface 1a is prevented from contacting air and being oxidized, and the generation of slag is suppressed. The adiabatic effect of the removal members 16 and 17 prevents heat dissipation, making it possible to downsize the metal melting furnace and achieve an energy saving effect. In addition, the heating means 8
When taking the liquid upward from the liquid level 1a, the heating tube 9
This prevents slag from adhering to the outer circumferential surface of the heating tube 9, thereby eliminating the need to remove slag from the outer circumferential surface of the heating tube 9. The removal members 16 and 17 may be urged toward each other by a spring and brought into contact with the outer circumferential surface of the heating tube 9.
このことは除去部材１８，１９に関しても同様
である。 This also applies to the removal members 18 and 19.
除去部材１６〜１９の材料は、セラミツクであ
り、溶解した金属１の湯ばなれの良い材料であ
り、比重量は金属１の比重量に近似した値であつ
て、たとえば2000Kg／m3程度である。 The material of the removal members 16 to 19 is ceramic, which is a material that allows the molten metal 1 to evaporate easily, and its specific weight is close to that of the metal 1, for example, about 2000 kg/m3. be.
第５図は、本考案の他の実施例の斜視図であ
る。加熱手段８の加熱筒９を外囲する一対の除去
部材２６，２７が設けられる。この除去部材２
６，２７はその平面形状が大略的に半円状であ
り、底部と、その底部の外周縁から上方に立上る
立上り部とを有する。除去部材２６，２７の加熱
管９に対応する凹所２８，２９がその加熱管９に
ごく近接し、または接触することを確実にするた
めに、ばね３０によつて除去部材２６，２７を相
互の近接方向に爆発的に付勢する。このような構
成によれば、加熱管９の外周面におけるイロの付
着が防がれる。 FIG. 5 is a perspective view of another embodiment of the present invention. A pair of removal members 26 and 27 are provided to surround the heating cylinder 9 of the heating means 8. This removal member 2
6 and 27 have a generally semicircular planar shape, and have a bottom and a rising portion rising upward from the outer peripheral edge of the bottom. The removal members 26, 27 are held together by a spring 30 to ensure that the recesses 28, 29 corresponding to the heating tubes 9 of the removal members 26, 27 are in close proximity to or in contact with the heating tubes 9. Explosively energizes in the direction of proximity. According to such a configuration, it is possible to prevent corrosion from adhering to the outer circumferential surface of the heating tube 9.
第１図〜第４図示の実施例における除去部材１
６〜１９の相互の間〓において溶解した金属１の
液面１ａが空気に接触することを可及的に防ぐた
めに、その間〓において液面１ａ上に浮遊する砂
を設けてもよい。また同様にして第５図の実施例
において除去部材２６，２７によつて覆われてい
ない溶解した金属の液面上に、砂を浮遊してその
液面１ａの酸化を防ぐようにしてもよい。 Removal member 1 in the embodiment shown in FIGS. 1 to 4
In order to prevent the liquid surface 1a of the molten metal 1 from coming into contact with air as much as possible between the points 6 to 19, sand may be provided to float on the liquid surface 1a between them. Similarly, in the embodiment shown in FIG. 5, sand may be suspended on the surface of the molten metal that is not covered by the removal members 26 and 27 to prevent the surface 1a from being oxidized. .
上述の実施例では、加熱手段８はガス燃料を燃
焼するバーナ構造を有しているけれども、本考案
の他の実施例として、加熱手段８は電気ヒータを
内蔵して金属１を加熱する構成としてもよく、そ
の他の構成であつても良い。本考案は、固体の金
属を加熱手段８によつて溶解し、その溶解した状
態に保つ金属溶解炉に関連してもまた実施するこ
とができる。本考案はまた、加熱手段８に関連し
て実施されるだけでなく、溶解した金属の液面の
上下にわたつて延びる熱電対、およびその他の構
造を有する棒状体に関連して広範囲に実施するこ
とができる。 In the above embodiment, the heating means 8 has a burner structure that burns gas fuel, but in another embodiment of the present invention, the heating means 8 may have a built-in electric heater to heat the metal 1. It is also possible to have other configurations. The invention can also be implemented in connection with a metal melting furnace in which solid metal is melted by heating means 8 and kept in the molten state. The invention is also widely practiced not only in connection with the heating means 8, but also in connection with rods having thermocouples and other structures extending above and below the level of the molten metal. be able to.
効 果
以上のように本考案によれば、棒状体の外周面
にノロが付着することが防がれ、たとえ付着して
も除去される。そのため棒状体の外周面の材料と
ノロとの熱膨張率の違いによる破損を防ぐことが
できる。またノロを棒状体の外周面から取除く作
業を行なう必要がなくなる。このようにして棒状
体の寿命を長くすることができる。Effects As described above, according to the present invention, slag is prevented from adhering to the outer peripheral surface of the rod-shaped body, and even if it does, it is removed. Therefore, damage due to the difference in coefficient of thermal expansion between the material of the outer peripheral surface of the rod-shaped body and the slag can be prevented. Further, there is no need to remove the slag from the outer peripheral surface of the rod-shaped body. In this way, the life of the rod can be extended.
第１図は本考案の一実施例の断面図、第２図は
第１図に示された実施例の平面図、第３図は第２
図の切断面線−から見た断面図、第４図は加
熱手段８付近の除去部材１６，１７を示す斜視
図、第５図は本考案の他の実施例の除去部材２
６，２７を示す斜視図である。
１……溶融金属、２……金属溶融炉、３……注
湯口、４……注湯室、５……加熱室、６……汲出
室、８……加熱手段、９……加熱管、１６〜１
９，２６，２７……除去部材、３９……カバー。
Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is a plan view of the embodiment shown in Fig. 1, and Fig. 3 is a sectional view of the embodiment shown in Fig. 1.
4 is a perspective view showing the removal members 16 and 17 near the heating means 8, and FIG. 5 is a removal member 2 of another embodiment of the present invention.
6 and 27. FIG. 1... Molten metal, 2... Metal melting furnace, 3... Pouring port, 4... Pouring chamber, 5... Heating chamber, 6... Pumping chamber, 8... Heating means, 9... Heating tube, 16-1
9, 26, 27...removal member, 39...cover.
Claims (1)
ータを外囲し、その浸漬ヒータの外周面に接触し
て液面に浮ぶ除去部材を設けたことを特徴とする
金属溶解炉のノロ除去構造。 A slag removal structure for a metal melting furnace, characterized in that a removal member is provided that surrounds an immersion heater that extends above and below the liquid level of molten metal, and that floats on the liquid surface in contact with the outer peripheral surface of the immersion heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986017285U JPH0445040Y2 (en) | 1986-02-08 | 1986-02-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986017285U JPH0445040Y2 (en) | 1986-02-08 | 1986-02-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62130400U JPS62130400U (en) | 1987-08-18 |
| JPH0445040Y2 true JPH0445040Y2 (en) | 1992-10-22 |
Family
ID=30809900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986017285U Expired JPH0445040Y2 (en) | 1986-02-08 | 1986-02-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0445040Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002357387A (en) * | 2001-06-04 | 2002-12-13 | Meichuu:Kk | Structure for immersion type molten metal preserving furnace |
-
1986
- 1986-02-08 JP JP1986017285U patent/JPH0445040Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62130400U (en) | 1987-08-18 |
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