JPH04124213A - Lance pipe - Google Patents
Lance pipeInfo
- Publication number
- JPH04124213A JPH04124213A JP24517290A JP24517290A JPH04124213A JP H04124213 A JPH04124213 A JP H04124213A JP 24517290 A JP24517290 A JP 24517290A JP 24517290 A JP24517290 A JP 24517290A JP H04124213 A JPH04124213 A JP H04124213A
- Authority
- JP
- Japan
- Prior art keywords
- lance
- heat insulating
- lance tube
- insulating layer
- steel pipe
- 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.)
- Pending
Links
- 239000000835 fiber Substances 0.000 claims abstract description 18
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 16
- 239000000853 adhesive Substances 0.000 abstract description 13
- 230000001070 adhesive effect Effects 0.000 abstract description 13
- 239000000377 silicon dioxide Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract description 4
- 229910019142 PO4 Inorganic materials 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 239000011490 mineral wool Substances 0.000 abstract description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 2
- 238000009628 steelmaking Methods 0.000 abstract description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 238000007654 immersion Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011823 monolithic refractory Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はランス管に係り、特に製鋼分野等で使用される
ランス管であって、その耐久性が大幅に改善されたラン
ス管に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to lance tubes, and particularly to lance tubes used in the steel manufacturing field, which have significantly improved durability. be.
［従来の技術］
ランス管は、電気炉等において製鋼を行なう際に酸素や
アルゴンガスを供給する用途の他に、受鋼鍋、連続鋳造
用タンデイツシュの残鋼の溶解除去、高炉或いは合金鉄
製錬炉の出銑口の開口など、多岐にわたって使用されて
いる。[Prior art] In addition to supplying oxygen and argon gas during steelmaking in electric furnaces, lance tubes are used to melt and remove residual steel from steel receiving ladle, continuous casting tundish, blast furnace or ferroalloy smelting. It is used in a wide variety of applications, such as opening the taphole of a furnace.
このランス管は通常、内径５〜５０ｍｍ、肉厚１〜５ｍ
ｍの、０．０４〜０．１０重量％の炭素を含有する低炭
素鋼管、或いはこの低炭素鋼管の内外面にアルミニウム
を拡散、浸透させることにより厚みが０．１〜１ｍｍの
Ｆｅ−ＡｆＬ合金層を形成させたものが用いられている
。This lance tube usually has an inner diameter of 5 to 50 mm and a wall thickness of 1 to 5 m.
m, low carbon steel pipe containing 0.04 to 0.10% by weight of carbon, or Fe-AfL alloy with a thickness of 0.1 to 1 mm by diffusing and infiltrating aluminum into the inner and outer surfaces of this low carbon steel pipe. A layered material is used.
このようなランス管を、温度が１４００〜１６００℃の
鉄溶湯中で酸素を供給する場合などに使用すると、急速
に酸化劣化し、ランス管自体が溶解、消耗し、ランス管
の破裂或いは閉塞が発生する。If such a lance tube is used to supply oxygen in molten iron at a temperature of 1,400 to 1,600 degrees Celsius, it will rapidly deteriorate due to oxidation, and the lance tube itself will melt and wear out, leading to rupture or blockage of the lance tube. Occur.
そこでランス管の主に外周面に耐火物を被覆して、直接
鉄溶湯に接触させないことで寿命を３〜１０倍に延長さ
せることが行なわれている。なお、耐火物としては、嵩
比重が３ｇ／ｃｍ’前後のシリカ、アルミナを主体とす
る焼結体が多く使用されている。具体的には、ランス管
本体の外周面に線材をラセン状に巻着したものを多数の
小孔を開設した施工枠内に挿入し、両者間に不定形耐火
物を流し込むことにより、耐溶損性に優れたランス管を
製造する方法が特開昭６１−１５９５０４号により報告
されている。Therefore, the life of the lance tube is extended by 3 to 10 times by coating the outer peripheral surface of the lance tube with a refractory material so that the lance tube does not come into direct contact with molten iron. Incidentally, as the refractory material, a sintered body mainly composed of silica or alumina with a bulk specific gravity of around 3 g/cm' is often used. Specifically, a piece of wire wrapped in a helical shape around the outer circumferential surface of the lance pipe body is inserted into a construction frame with many small holes, and a monolithic refractory is poured between the two to make it resistant to melting and corrosion. A method for manufacturing a lance tube with excellent properties has been reported in Japanese Patent Application Laid-open No. 159504/1983.
また、ランス管に窒化チタン、炭化チタン或いは両者の
混合物をコーティングすることにより、その耐久性を改
善する方法が特開昭６１−２９５３１３号に報告されて
いる。Furthermore, Japanese Patent Application Laid-Open No. 295313/1983 reports a method of improving the durability of a lance tube by coating it with titanium nitride, titanium carbide, or a mixture of both.
［発明が解決しようとする課題］
ランス管の外周面を耐火物で被覆する場合、ランス管の
寿命をより大幅に延長させるために、耐火物の被覆厚さ
を増加させると、ランス管の総重量も比例して増加する
ことになる。しかしながら、この場合、ランス管、特に
小径或いは薄肉のランス管においては、総重量が大きい
と腰が弱く曲がり易くなるため、ランス管の取り扱い作
業が非常に困難となるという不具合がある。[Problems to be Solved by the Invention] When the outer peripheral surface of a lance tube is coated with a refractory material, increasing the coating thickness of the refractory material in order to further extend the life of the lance tube will reduce the overall thickness of the lance tube. The weight will also increase proportionately. However, in this case, a lance tube, especially a small-diameter or thin-walled lance tube, has a problem in that when the total weight is large, the lance tube becomes weak and easy to bend, making it extremely difficult to handle the lance tube.
一方、ランス管に窒化チタンなどをコーティングしたも
のでは、長時間ランス管を溶湯中に浸漬した場合にコー
テイング材とランス管材との熱膨張差により眉間剥離が
発生し易く、ランス管の寿命が短いという欠点がある。On the other hand, when the lance tube is coated with titanium nitride or the like, when the lance tube is immersed in molten metal for a long time, the difference in thermal expansion between the coating material and the lance tube material tends to cause peeling, which shortens the life of the lance tube. There is a drawback.
本発明は上記従来の問題点を解決し、可使寿命が長く、
しかも総重量の小さいランス管を提供することを目的と
する。The present invention solves the above conventional problems, has a long usable life, and
Moreover, the object is to provide a lance tube with a small total weight.
［課題を解決するための手段］
本発明のランス管は、鋼管の内面及び外周面の少なくと
も一方に、セラミック系繊維からなる断熱層を形成して
なることを特徴とする。[Means for Solving the Problems] The lance tube of the present invention is characterized in that a heat insulating layer made of ceramic fibers is formed on at least one of the inner surface and outer peripheral surface of the steel tube.
［作用］
鋼管の内面及び／又は外周面に、セラミック系繊維から
なる断熱層を形成してなる本発明のランス管は、嵩比重
が０．１〜１．０ｇ／ｅｒｒ？と非常に軽量である上に
、熱伝導率も０．０５〜０．５Ｋｃａｕ／ｍ−ｈｒ・℃
と金属或いはセラミック焼結体に比較してかなり小さい
。[Function] The lance tube of the present invention, which is formed by forming a heat insulating layer made of ceramic fibers on the inner surface and/or outer peripheral surface of the steel tube, has a bulk specific gravity of 0.1 to 1.0 g/err? In addition to being extremely lightweight, the thermal conductivity is 0.05 to 0.5 Kcau/m-hr・℃
It is quite small compared to metal or ceramic sintered bodies.
本発明のランス管は、断熱層の優れた断熱性能によりラ
ンス管の可使寿命を大幅に延長することができると共に
、嵩比重が小さいためランス管の総重量が小さく、取り
扱い性、作業性が良好に保たれる。The lance tube of the present invention can greatly extend the usable life of the lance tube due to the excellent heat insulation performance of the heat insulation layer, and has a low bulk specific gravity, so the total weight of the lance tube is small, making it easy to handle and work. Well kept.
［実施例］
以下に本発明の実施例について図面を参照して詳細に説
明する。[Examples] Examples of the present invention will be described in detail below with reference to the drawings.
第１図は本発明のランス管の一実施例を示す縦断面図で
ある。FIG. 1 is a longitudinal sectional view showing an embodiment of the lance tube of the present invention.
本発明において、ランス管本体となる鋼管１としては、
低炭素鋼管又はＦｅ−Ａ２合金製鋼管等が挙げられる。In the present invention, the steel pipe 1 serving as the lance pipe body includes:
Examples include low carbon steel pipes and Fe-A2 alloy steel pipes.
また、このような鋼管の内面及び／又は外周面に断熱層
２．３を形成するセラミック系繊維のセラミックとして
は、ガラス、岩綿、シリカ、アルミナ、炭化ケイ素等が
挙げられる。Further, examples of the ceramic fibers forming the heat insulating layer 2.3 on the inner surface and/or outer peripheral surface of such a steel pipe include glass, rock wool, silica, alumina, silicon carbide, and the like.
これらのセラミック系繊維からなる断熱層２．３を鋼管
１の内面及び／又は外周面に形成するには、
■ これらのセラミック系繊維の長繊維を紡織したもの
や短繊維を適当なバインダーを用いて不織布状にしたも
のを鋼管にＳＳ−付ける。In order to form the heat insulating layer 2.3 made of these ceramic fibers on the inner and/or outer peripheral surface of the steel pipe 1, ■ Spun long fibers or short fibers of these ceramic fibers using an appropriate binder. The material is made into a non-woven fabric and attached to a steel pipe.
■ 予め鋼管の形状に合せた筒状体を、上記セラミック
系繊維により成形し、これを鋼管に取り付ける。(2) A cylindrical body that matches the shape of the steel pipe is formed in advance from the ceramic fibers described above, and this is attached to the steel pipe.
などの方法を採用することができる。この場合、断熱層
２．３は必要に応じて接着剤４にて鋼管１に接着する。Methods such as the following can be adopted. In this case, the heat insulating layer 2.3 is adhered to the steel pipe 1 with an adhesive 4 as required.
接着剤４としては、ケイ酸塩、リン酸塩、シリカゾル等
の無機接着剤が好適である。As the adhesive 4, inorganic adhesives such as silicates, phosphates, and silica sol are suitable.
なお、本発明において、ランス管本体となる鋼管１は、
通常、内径５〜５０ｍｍ、肉厚１〜５ｍｍ程度のバイブ
状であり、また、セラミック系繊維からなる断熱層２．
３の厚さは０．５ｍｍ〜５０ｍｍであることが望ましい
、断熱層２．３の厚さが０．５ｍｍ未満であると断熱性
能の低下が著しく、ランス管の寿命もそれほど延長はで
籾ない。また、断熱層２．３の厚さが５０ｍｍを超える
とランス管の総重量が増加し、取り扱い作業に支障をき
たすことになる。In addition, in the present invention, the steel pipe 1 serving as the lance pipe main body is
It is usually in the shape of a vibrator with an inner diameter of 5 to 50 mm and a wall thickness of about 1 to 5 mm, and also has a heat insulating layer made of ceramic fiber.
It is desirable that the thickness of 3 is between 0.5 mm and 50 mm. If the thickness of the heat insulating layer 2.3 is less than 0.5 mm, the insulation performance will drop significantly and the life of the lance tube will not be extended that much. . Furthermore, if the thickness of the heat insulating layer 2.3 exceeds 50 mm, the total weight of the lance tube will increase, which will hinder handling operations.
一般に、鋼管１の内面に形成する断熱層２は１〜５ｍｍ
程度、外周面に形成する断熱層３は１０〜５０ｍｍ程度
の厚さとなるようにするのが好ましい。Generally, the heat insulating layer 2 formed on the inner surface of the steel pipe 1 has a thickness of 1 to 5 mm.
It is preferable that the heat insulating layer 3 formed on the outer peripheral surface has a thickness of about 10 to 50 mm.
以下に具体的な実施例及び比較例を挙げて本発明をより
詳細に説明するが、本発明はその要旨を超えない限り、
以下の実施例に限定されるものではない。The present invention will be explained in more detail by giving specific examples and comparative examples below, but the present invention does not exceed the gist thereof.
The present invention is not limited to the following examples.
実施例１
内径２０ｍｍ、外径２５ｍｍのバイブ用鋼管の外周面に
３０ｍｍ厚さのシリカ・アルミナ系繊維の不織布製テー
プからなる断熱層を無機接着剤（ケイ酸ソーダ系接着剤
）で貼り付けたものを使用して、その耐久性をテストし
た。Example 1 A heat insulating layer made of a 30 mm thick silica/alumina fiber nonwoven tape was attached to the outer peripheral surface of a steel pipe for a vibrator with an inner diameter of 20 mm and an outer diameter of 25 mm using an inorganic adhesive (sodium silicate adhesive). I used it to test its durability.
テストは、直径２゜５ｍ、深さ３ｍの取鍋に１４６０℃
の鉄溶湯を約１０トン入れ、これにランス管を約８００
ｍｍ浸漬することを２分間行ない、次いで取り出して冷
却した後、再度浸漬するサイクルを１０回繰り返した。The test was conducted at 1460℃ in a ladle with a diameter of 2.5m and a depth of 3m.
Pour about 10 tons of molten iron into it, and add about 800 tons of lance pipes to it.
A cycle of dipping for 2 minutes, then taking out, cooling, and dipping again was repeated 10 times.
１０回の繰り返し浸漬テスト後、ランス管を取り出して
検査したところ、シリカ・アルミナ系繊維からなる断熱
層には数ケ所クラックが発生していたが、鋼管には大き
な破裂、孔明きなどは見られなかフた。After 10 repeated immersion tests, the lance tube was taken out and inspected. Although cracks had occurred in several places in the insulation layer made of silica and alumina fibers, there were no major ruptures or holes in the steel tube. Nakafuta.
実施例２
内径３５ｍｍ、外径５０ｍｍのバイブ用鋼管の外周面に
３０ｍｍ厚さ及び内周面に２ｍｍ厚さのシリカ・アルミ
ナ系繊維の筒状体からなる断熱層を無機接着剤（シリカ
ゾル系接着剤）で貼り付けたものを使用し、これを１４
６０℃の鉄溶湯中に約５００ｍｍ浸漬して断熱層の経時
変化を観察した。Example 2 A heat insulating layer consisting of a cylindrical body of silica/alumina fibers with a thickness of 30 mm on the outer circumferential surface of a steel pipe for a vibrator with an inner diameter of 35 mm and an outer diameter of 50 mm and an inorganic adhesive (silica sol adhesive) on the inner circumferential surface. 14.
The heat insulating layer was immersed approximately 500 mm into molten iron at 60° C. to observe changes over time.
その結果、外周面及び内周面とも１５分後までは大きな
変化は見られなかったものの、２０分後より内周面に微
小クラックが見られ、３０分後には内周面の一部で鋼管
が露出した。しかし、外周面には３０分後でも大きな変
化は見られなかった。As a result, although no major changes were observed on the outer and inner circumferential surfaces until 15 minutes later, microcracks were observed on the inner circumferential surface after 20 minutes, and after 30 minutes, a portion of the inner circumferential surface of the steel pipe was exposed. However, no significant change was observed on the outer peripheral surface even after 30 minutes.
比較例１
ランス管としてセラミック繊維からなる断熱層を設けて
いないバイブ用鋼管を使用したこと以外は、実施例１と
同様な条件で浸漬テストを行なった。その結果、浸漬テ
ストを３回繰り返した後、取り出して検査したところ、
先端部は約１００ｍｍが欠落しており、破裂部が２ケ所
克つかつた。Comparative Example 1 An immersion test was conducted under the same conditions as in Example 1, except that a vibrator steel pipe without a heat insulating layer made of ceramic fiber was used as the lance pipe. As a result, after repeating the immersion test three times, we took it out and inspected it.
Approximately 100 mm of the tip was missing, and two ruptures were made.
比較例２
内径２０ｍｍ、外径２５ｍｍのバイブ用鋼管の外周面に
０．２ｍｍ厚さのシリカ・アルミナ系繊維からなる薄い
シートを無機接着剤（ケイ酸ソーダ系接着剤）で貼り付
けたものを使用して、実施例１と同様な条件で、浸漬テ
ストを行なった。その結果、浸漬テストを５回繰り返し
た後、取り出して検査したところ、先端部が３０〜５０
ｍｍ欠落していた。Comparative Example 2 A thin sheet made of silica/alumina fibers with a thickness of 0.2 mm was attached to the outer peripheral surface of a steel pipe for a vibrator with an inner diameter of 20 mm and an outer diameter of 25 mm using an inorganic adhesive (sodium silicate adhesive). An immersion test was conducted under the same conditions as in Example 1. As a result, after repeating the immersion test 5 times, we took it out and inspected it, and found that the tip was 30 to 50
mm was missing.
実施例３
内径３５ｍｍ、外径５０ｍｍのバイブ用鋼管の外周面に
３０ｍｍ厚さのシリカ・アルミナ系繊維の筒状体からな
る断熱層を無機接着剤（シリカゾル系接着剤）で貼り付
けたものを使用して、実施例２と同一条件で経時変化を
観察した。その結果、内周面は５分後より一部で溶損が
始まり、１０分後には先端部から５〜１０ｍｍの部分で
鋼管の全周に溶損が見られたが、外周面は時間経通に伴
う大きな変化は見られなかった。Example 3 A heat insulating layer made of a cylindrical body of silica/alumina fibers with a thickness of 30 mm was attached to the outer peripheral surface of a steel pipe for a vibrator with an inner diameter of 35 mm and an outer diameter of 50 mm using an inorganic adhesive (silica sol adhesive). The changes over time were observed under the same conditions as in Example 2. As a result, melting damage started to occur in a part of the inner circumferential surface after 5 minutes, and melting damage was observed on the entire circumference of the steel pipe within 5 to 10 mm from the tip after 10 minutes, but the outer circumferential surface was damaged over time. No major changes were observed with the passage of time.
［発明の効果］
以上詳述した通り、本発明のランス管によれば、可使寿
命を大幅に延長できると共に、ランス管の重量を軽減し
て取り扱い性、作業性も向上させることが可能となる。[Effects of the Invention] As detailed above, according to the lance tube of the present invention, the usable life can be significantly extended, and the weight of the lance tube can be reduced to improve handling and workability. Become.
本発明のランス管は、その適用範囲が製鋼分野だけでも
多岐にわたるため、工業的な波及効果は極めて大きい。The lance tube of the present invention has a wide range of applications, even in the steel manufacturing field, and therefore has an extremely large industrial ripple effect.
第１図は本発明のランス管の一実施例を示す縦断面図で
ある。
１・・・鋼管、 ２．３・・・断熱層、４・・・接
着剤。FIG. 1 is a longitudinal sectional view showing an embodiment of the lance tube of the present invention. 1... Steel pipe, 2.3... Heat insulation layer, 4... Adhesive.
Claims (1)
ミック系繊維からなる断熱層を形成してなることを特徴
とするランス管。(1) A lance tube characterized in that a heat insulating layer made of ceramic fiber is formed on at least one of the inner and outer circumferential surfaces of the steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24517290A JPH04124213A (en) | 1990-09-14 | 1990-09-14 | Lance pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24517290A JPH04124213A (en) | 1990-09-14 | 1990-09-14 | Lance pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04124213A true JPH04124213A (en) | 1992-04-24 |
Family
ID=17129679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24517290A Pending JPH04124213A (en) | 1990-09-14 | 1990-09-14 | Lance pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04124213A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100879741B1 (en) * | 2007-09-20 | 2009-01-20 | 주식회사 포스코 | Apparatus for assembling and separating a pipe of paper |
| JP2009079260A (en) * | 2007-09-26 | 2009-04-16 | Jfe Steel Kk | Oxygen gas blowing lance, and desiliconization method of molten iron |
| WO2011018197A1 (en) | 2009-08-10 | 2011-02-17 | Sms Siemag Ag | Lance for a smelting vessel system or a metallurgical reaction vessel |
| DE102009060827A1 (en) | 2009-12-29 | 2011-06-30 | SMS Siemag Aktiengesellschaft, 40237 | Lance head for a lance with a ceramic nozzle insert |
| WO2012075980A1 (en) * | 2010-12-06 | 2012-06-14 | Sms Siemag Ag | Lance for a furnace crucible system or a metallurgical reaction vessel |
| DE102015013455A1 (en) * | 2015-10-16 | 2017-04-20 | Eisenmann Se | Lance for a plant for the thermal treatment of a good and plant for the thermal treatment of a good |
| EP3428534A1 (en) * | 2017-07-13 | 2019-01-16 | Steinmüller Engineering GmbH | Highly heat resistant, highly erosion resistant lance system, reaction space containing the lance system and method for reducing the concentration of pollutants in combustion gases |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5720370A (en) * | 1980-07-10 | 1982-02-02 | Ricoh Co Ltd | Production of thermal head |
-
1990
- 1990-09-14 JP JP24517290A patent/JPH04124213A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5720370A (en) * | 1980-07-10 | 1982-02-02 | Ricoh Co Ltd | Production of thermal head |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100879741B1 (en) * | 2007-09-20 | 2009-01-20 | 주식회사 포스코 | Apparatus for assembling and separating a pipe of paper |
| JP2009079260A (en) * | 2007-09-26 | 2009-04-16 | Jfe Steel Kk | Oxygen gas blowing lance, and desiliconization method of molten iron |
| WO2011018197A1 (en) | 2009-08-10 | 2011-02-17 | Sms Siemag Ag | Lance for a smelting vessel system or a metallurgical reaction vessel |
| DE102010024035A1 (en) | 2009-08-10 | 2011-02-17 | Sms Siemag Ag | Lance for a melting vessel or a metallurgical reaction vessel |
| DE102009060827A1 (en) | 2009-12-29 | 2011-06-30 | SMS Siemag Aktiengesellschaft, 40237 | Lance head for a lance with a ceramic nozzle insert |
| EP2341155A1 (en) | 2009-12-29 | 2011-07-06 | SMS Siemag AG | Lance head for a blowing lance comprising a ceramic nozzle insert |
| WO2012075980A1 (en) * | 2010-12-06 | 2012-06-14 | Sms Siemag Ag | Lance for a furnace crucible system or a metallurgical reaction vessel |
| DE102015013455A1 (en) * | 2015-10-16 | 2017-04-20 | Eisenmann Se | Lance for a plant for the thermal treatment of a good and plant for the thermal treatment of a good |
| EP3428534A1 (en) * | 2017-07-13 | 2019-01-16 | Steinmüller Engineering GmbH | Highly heat resistant, highly erosion resistant lance system, reaction space containing the lance system and method for reducing the concentration of pollutants in combustion gases |
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