JPH073317A - Method for lining molten iron heating part in mixer car - Google Patents
Method for lining molten iron heating part in mixer carInfo
- Publication number
- JPH073317A JPH073317A JP14942393A JP14942393A JPH073317A JP H073317 A JPH073317 A JP H073317A JP 14942393 A JP14942393 A JP 14942393A JP 14942393 A JP14942393 A JP 14942393A JP H073317 A JPH073317 A JP H073317A
- Authority
- JP
- Japan
- Prior art keywords
- refractory
- box
- hot water
- frame body
- lining
- 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.)
- Withdrawn
Links
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、製鉄業に用いられる溶
銑輸送容器である混銑車の湯当たり部の施工方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a hot water contact portion of a hot metal truck, which is a hot metal transportation container used in the steel industry.
【０００２】[0002]
【従来の技術】混銑車（トーピードカー）は高炉で出銑
された溶銑を受け、転炉工場まで搬送し、転炉に溶銑を
供給するために使用されている。上記高炉から出銑され
た溶銑を混銑車に受銑するに際しては、高炉設備仕様に
よって若干異なるが、通常４〜６ｍの落差のもとで受銑
するため、混銑車のライニング、特に、湯当たり部のラ
イニングは受銑初期に溶銑流の落下衝撃及び熱衝撃によ
って損傷するので耐火ライニング全体の寿命を短くして
いた。2. Description of the Related Art A hot metal truck (torpedo car) is used to receive hot metal tapped in a blast furnace, convey the hot metal to a converter factory, and supply the hot metal to the converter. When the hot metal tapped from the above blast furnace is received by the hot metal mixer, it varies depending on the specifications of the blast furnace, but since it is usually received at a head of 4 to 6 m, the lining of the hot metal car, especially the hot water Since the lining of the part is damaged by the drop impact and the thermal impact of the hot metal flow in the early stage of the pig iron reception, the life of the entire refractory lining was shortened.
【０００３】図２に示すように、混銑車のライニングは
通常、パーマネントライニング１とウエアライニング２
を耐火煉瓦で築造しており、近年、ウエアライニングを
不定形耐火物で成形するアイディアが提案されている。
かかる混銑車のライニング損傷の激しい湯当たり部ライ
ニングの寿命を延長したり、あるいは、その損傷速度を
他の部位とほぼ同期させるために、例えば、当該部位に
耐食性に優れた耐火煉瓦を配置したり、耐食性を重視し
たＡｌ2 ０3 質の湯当たりブロック３を用い、厚いライ
ニング層を形成させることが、例えば、特開昭５５−０
１４８１１号等で知られている。As shown in FIG. 2, the lining of a towed car is usually a permanent lining 1 and a wear lining 2.
Has been built from refractory bricks, and in recent years, the idea of molding wear linings with amorphous refractory has been proposed.
In order to extend the life of the hot water contact part lining where the lining damage of such a tow car is severe, or to synchronize the damage rate with other parts almost completely, for example, a refractory brick with excellent corrosion resistance is arranged in the part. In order to form a thick lining layer by using a block 3 of Al 2 O 3 quality hot water, which emphasizes corrosion resistance, see, for example, JP-A-55-0.
It is known as No. 14811.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、湯当た
り部に耐食性を重視した大型プレキャストブロックを配
置する方式であると、該ブロックのコストが高いという
ことや、受銑初期のスポーリングによる割れを発生し易
く溶損以上に欠落損傷すること、また、例えば、厚みが
２５０〜３００mm、断面寸法０．６〜１．５ｍ×０．６
〜１．５ｍの大型プレキャストブロックであるとその重
量は約５００〜１２００kgと重いので、他の部位のライ
ニングに用いる耐火煉瓦の単重の１００〜１７０倍とな
り、施工が著しく煩雑となる。However, in the method of arranging a large precast block in which the corrosion resistance is important in the hot water contact portion, the cost of the block is high and cracking occurs due to spalling in the early stage of pig iron reception. It is easy to be damaged and is damaged more than melting loss. For example, the thickness is 250 to 300 mm, the cross-sectional dimension is 0.6 to 1.5 m × 0.6.
Since a large precast block of ~ 1.5 m has a heavy weight of about 500 to 1200 kg, the unit weight is 100 to 170 times the unit weight of the refractory brick used for lining other parts, which makes the construction considerably complicated.
【０００５】また、混銑車のライニング、例えば、スラ
グライン部、その他は受銑、搬送の回数に比例して損傷
するので所定期間毎に補修することが必要となり、ウエ
アライニングを耐火煉瓦で築造している場合、特に、損
傷の激しい部位の耐火煉瓦の張り替えのために混銑車内
を冷却して冷間補修することになる。混銑車のライニン
グ補修に際しては、特に、損傷の激しい部位の耐火煉瓦
の解砕とか解砕煉瓦の排出作業のために、しばしば混銑
車を回動し、時には逆さま状態にすることもあるが、冷
却されたライニング層の各耐火煉瓦はそれぞれ収縮して
セリ力が低下しており、混銑車を回動すると上記単重の
大きいプレキャストブロックが脱落するという問題点が
ある。Further, since the lining of a hot metal truck, for example, the slag line portion and the like are damaged in proportion to the number of times of pig iron and transportation, it is necessary to repair the lining at every predetermined period, and the wear lining is constructed of refractory bricks. In particular, in order to replace the refractory bricks in the severely damaged area, the inside of the hot metal car is cooled and cold repaired. When repairing the lining of a towed car, the towed car is often rotated and sometimes turned upside down, especially for the crushing of refractory bricks or the discharging work of crushed bricks in severely damaged areas. The refractory bricks in the lining layer are shrunk and the seri force is reduced, so that there is a problem that the precast block having a large unit weight falls off when the torch is rotated.
【０００６】本発明は、上記混銑車の湯当たりブロック
に起因する問題を解消し、寿命の長い湯当たり部とする
ことが可能な湯当たり部の施工方法を提供することを目
的とするものである。It is an object of the present invention to provide a method for constructing a hot water contact portion which solves the problem caused by the hot water contact block of the above-mentioned hot metal and can be a hot water contact portion having a long life. is there.
【０００７】[0007]
【課題を解決するための手段】本発明は、混銑車の受銑
時の湯当たり部に相当する範囲に、耐火煉瓦でウエアラ
イニング面より突出させて升状の枠体を構成し、該升状
枠体内に膨張・収縮量を調整した不定形耐火物を充填す
ることを特徴とする混銑車の湯当たり部の施工方法であ
る。また本発明は、上記升状の枠体を、肉厚が１００mm
〜２５０mmの耐火煉瓦で、不定形耐火物の充填深さ１０
０〜１５０mmに構成することを特徴とする請求項１記載
の混銑車の湯当たり部の施工方法である。また本発明
は、上記升状の枠体内に充填する不定形耐火物の充填表
面積を０．６〜１．５ｍ2 とすることを特徴とする請求
項１乃至２記載の混銑車の湯当たり部の施工方法であ
る。DISCLOSURE OF THE INVENTION According to the present invention, a box-shaped frame body is formed of a refractory brick so as to project from a wear lining surface in a range corresponding to a hot water contact portion of a piggyback car. A method for constructing a hot water contact portion of a mixed pig car, which is characterized in that an irregular shaped refractory material whose expansion / contraction amount is adjusted is filled in the frame body. In the present invention, the box-shaped frame body has a wall thickness of 100 mm.
~ 250mm refractory brick, filling depth of irregular refractory material 10
The method for constructing a hot water contact portion of a towed pig car according to claim 1, wherein the hot water contact portion is configured to be 0 to 150 mm. Further, according to the present invention, the filling surface area of the irregular refractory material to be filled in the box-shaped frame body is set to 0.6 to 1.5 m 2, and the hot water contact portion of the mixed pig car according to claim 1 or 2, Is the construction method.
【０００８】[0008]
【作用】本発明は、混銑車の受銑時の湯当たり部に相当
する範囲に、耐火煉瓦でウエアライニング面より突出さ
せて升状の枠体を構成し、該升状枠体内に膨張・収縮量
を調整した不定形耐火物を充填するので、升状枠体に囲
まれた不定形耐火物は、周囲の枠体の耐火煉瓦と自らの
熱膨張によって圧縮応力を受け、気孔率が減少し高強度
となる。また、不定形耐火物であるため高温でクリープ
特性を持つため、耐火煉瓦のようなスポーリングによる
剥離割れを起こすことなく徐々に溶損するので、長寿命
化が図られる。According to the present invention, a box-shaped frame body is formed of a refractory brick so as to project from the wear lining surface in a range corresponding to the hot water contact portion of the hot metal of the mixed piggy car, and the expanded frame body is expanded and expanded. Since the irregular refractory with the adjusted shrinkage is filled, the irregular refractory surrounded by the box-shaped frame receives compressive stress due to the thermal expansion of the refractory bricks of the surrounding frame and its own, and the porosity decreases. And high strength. Further, since it is an amorphous refractory, it has creep characteristics at high temperatures, and it gradually melts without causing peeling cracks due to spalling like refractory bricks, thus extending the life.
【０００９】また、ライニング補修に際して、ライニン
グ層を冷却することによって耐火煉瓦相互のセリ力は低
下するが、収縮量を調整した不定形耐火物を充填してあ
るので、不定形耐火物充填層の残存膨張特性によってセ
リ力が発現しており、湯当たり部位およびその周辺のラ
イニングの混銑車の回動による脱落が防止できる。Further, when the lining is repaired, the seriating force between the refractory bricks is reduced by cooling the lining layer, but since the irregular refractory having a controlled shrinkage amount is filled, the irregular refractory filled layer of the irregular refractory is filled. Due to the residual expansion characteristics, the seri force is exerted, and it is possible to prevent the lining of the hot water contact part and its periphery from falling off due to the rotation of the towed wheel.
【００１０】また本発明は、上記升状の枠体を、肉厚が
１００mm〜２５０mmの耐火煉瓦で構成するので不定形耐
火物の膨張力を充分に支持できる。また、不定形耐火物
の充填深さ１００〜１５０mmに構成するので、施工後の
乾燥昇温によって不定形耐火物中の水分を深部まで充分
に除去でき、乾燥時あるいは乾燥不足に起因する受銑時
の昇温における不定形耐火物中の水分から生成される水
蒸気による爆裂が解消される。Further, according to the present invention, since the box-shaped frame is made of refractory bricks having a wall thickness of 100 mm to 250 mm, it is possible to sufficiently support the expansive force of the amorphous refractory. Moreover, since the filling depth of the amorphous refractory is configured to be 100 to 150 mm, the moisture in the amorphous refractory can be sufficiently removed to the deep portion by the drying temperature rise after the construction, and the pig iron received during the drying or insufficient drying can be received. Explosion due to water vapor generated from the moisture in the amorphous refractory at the time of temperature rise is eliminated.
【００１１】また本発明は、上記升状の枠体内に充填す
る不定形耐火物の充填表面積を０．６〜１．５ｍ2 とし
たので、出銑樋（傾注樋）と混銑車の相対位置を合わせ
た状態で受銑する際に、出銑樋の出銑口部のノロ付等に
よる溶銑落下流の乱れ、あるいは、傾注樋の傾動操作ミ
ス等による溶銑落下位置の変動等があったとしても、湯
当たり部位に受銑できる。Further, according to the present invention, since the filling surface area of the irregular refractory material to be filled in the box-shaped frame body is set to 0.6 to 1.5 m 2 , the relative position of the tapping gutter (tilting gutter) and the mixed piggy wheel When the hot metal is received in the combined state, there is turbulence in the hot metal drop flow due to sloping of the tap hole of the hot metal gutter, or fluctuations in the hot metal drop position due to an error in the tilting gutter tilting operation, etc. Also, the hot water can be received at the part.
【００１２】以下、本発明を図面にもとづいて具体的に
説明する。図１は本発明の施工方法による湯当たり部の
ライニング構造の側面と平面図である。混銑車のパーマ
ネントライニング１を築造した後のウエアライニング２
の築造に際して、湯当たり部位に長尺煉瓦４を用いて升
状の枠体５を構成する。該枠体５の形状としては円形、
楕円形等種々の形状が考えられるが、煉瓦築造の容易
さ、膨張・収縮時のセリ力発現効果の点から四角形状、
即ち、升状が適している。The present invention will be specifically described below with reference to the drawings. FIG. 1 is a side view and a plan view of a lining structure of a hot water contact part according to the construction method of the present invention. Wear lining 2 after building permanent lining 1 for towed cars
At the time of building, the box-shaped frame body 5 is formed by using the long bricks 4 in the hot water contacting portion. The frame 5 has a circular shape,
Various shapes such as ellipse are conceivable, but in terms of easiness of brick construction and the effect of developing auctioning force when expanding and contracting, a square shape,
That is, a box shape is suitable.
【００１３】耐火物を構成する各組成物の物理特性、例
えば、耐火温度、膨張率、収縮率等の値はそれぞれ異な
ることはよく知られている。上記升状枠体５内に充填す
る不定形耐火物としてはその耐食性に優れたものである
が、更に、膨張・収縮量を調整した不定形耐火物を使用
する。特に、冷却した際に残存膨張性を発現する組成と
なるように配合調整した不定形耐火物を用いる。具体的
にはアルミナとマグネシアを組み合わせてスピネルを生
成させる不定形耐火物、例えば、Ａｌ2 ０3 ：４５〜９
０重量％、ＳｉＯ2 ：３〜２０重量％、ＭｇＯ：５〜２
０重量％に配合した材料が望ましい。It is well known that the physical properties of the constituents of the refractory material, such as the refractory temperature, the expansion coefficient and the contraction coefficient, are different. The amorphous refractory to be filled in the box-shaped frame body 5 has excellent corrosion resistance, but an amorphous refractory having a controlled expansion / contraction amount is used. In particular, an amorphous refractory material whose composition is adjusted so that it has a composition that exhibits residual expansion when cooled is used. Monolithic refractory in particular to produce a spinel in combination with alumina and magnesia, for example, Al 2 0 3: 45~9
0% by weight, SiO 2 : 3 to 20% by weight, MgO: 5 to 2
A material blended at 0% by weight is desirable.
【００１４】上記不定形耐火物に添加するバインダーと
しては、焼成後の残存炭素量が相対的に多いフェノール
樹脂が好適である。また、耐食性、耐酸化性を向上させ
るために、Ａｌ、Ｓｉ、Ｍｇ等の金属粉、ガラス物質等
を添加でき、生成した金属酸化物は上記スピネル生成源
としても機能する。As a binder to be added to the above-mentioned amorphous refractory material, a phenol resin having a relatively large amount of residual carbon after firing is suitable. Further, in order to improve the corrosion resistance and the oxidation resistance, a metal powder such as Al, Si and Mg, a glass substance or the like can be added, and the generated metal oxide also functions as the spinel generation source.
【００１５】上記升状枠体５を構成する耐火煉瓦４とし
ては、耐食性に優れた煉瓦が好ましく、例えば、Ａｌ2
０3 ：７０〜９０重量％、ＳｉＣ：５〜１５重量％、
Ｃ：５〜２５重量％が使用できる。また、升状枠体５の
肉厚は１００mm〜２５０mmとするものである。図示した
ように一つの煉瓦あるいは複数の煉瓦の組み合わせで必
要厚みを確保する。上記枠体５の肉厚は、１００mm未満
では、充填した不定形耐火物６の膨張による対応に勝て
ず、ウエアライニング２から突出した部分で煉瓦４が割
れる場合がある。逆に、２５０mmを越えると煉瓦４の単
重が大きくなってしまい、施工が煩雑となり、コストが
高くなってしまう。The refractory brick 4 constituting the box-shaped frame 5 is preferably a brick having excellent corrosion resistance, for example, Al 2
0 3 : 70 to 90% by weight, SiC: 5 to 15% by weight,
C: 5 to 25% by weight can be used. The wall thickness of the box-shaped frame body 5 is 100 mm to 250 mm. As shown, one brick or a combination of bricks secures the required thickness. If the wall thickness of the frame body 5 is less than 100 mm, it may not be possible to cope with the expansion of the filled indeterminate refractory material 6, and the brick 4 may be cracked at the portion protruding from the wear lining 2. On the contrary, if it exceeds 250 mm, the unit weight of the brick 4 becomes large, the construction becomes complicated, and the cost becomes high.
【００１６】上記升状枠体５をウエアライニング層２よ
り突出させる高さ、即ち、升状枠体５内に充填する不定
形耐火物の深さは１００〜１５０mm厚みとするものであ
る。１００mm未満では、不定形耐火物の厚みが薄すぎ、
他の部位の寿命に同期でき難い。一方、１５０mmを越え
ると不定形耐火物充填層の乾燥に時間がかかるだけでな
く、不定形耐火物の充填層の深部から発生した水蒸気に
よって表層部の不定形耐火物層に割れが発生したり、場
合によっては表層部が剥がれてしまい、結果的に施工肉
厚が薄くなってしまう。The height at which the box-shaped frame 5 is projected from the wear lining layer 2, that is, the depth of the amorphous refractory material filled in the box-shaped frame 5 is 100 to 150 mm. If it is less than 100 mm, the thickness of the irregular refractory is too thin,
It is difficult to synchronize with the life of other parts. On the other hand, if the thickness exceeds 150 mm, not only does it take time to dry the amorphous refractory packed bed, but also the steam generated from the deep part of the irregular refractory packed bed causes cracks in the amorphous refractory layer on the surface layer. In some cases, the surface layer part is peeled off, resulting in a thin construction wall.
【００１７】上記升状枠体５に充填する不定形耐火物の
充填表面積は０．６〜１．５ｍ2 とする。０．６ｍ2 未
満では、溶銑流の落下点が変動した際に受けられないだ
けでなく、不定形耐火物の圧縮応力を不定形耐火物自身
で吸収できず、座屈してしまい長寿命化が図れない。逆
に１．５ｍ2 を越えると、不必要な面積となり、升状枠
体５を構成する煉瓦を多量に必要とし、コストが高くな
ってしまう。The filling surface area of the irregular refractory material to be filled in the box-shaped frame 5 is 0.6 to 1.5 m 2 . If it is less than 0.6 m 2 , not only will it not be received when the drop point of the hot metal flow fluctuates, but the compressive stress of the irregular refractory cannot be absorbed by the irregular refractory itself, and it will buckle and prolong the service life. I can't plan. On the other hand, if it exceeds 1.5 m 2 , the area becomes unnecessary, a large amount of bricks constituting the box-shaped frame body 5 is required, and the cost becomes high.
【００１８】[0018]
実施例１ 溶銑容量２５０トンの混銑車の湯当たり部に図１に示す
ように、Ａｌ2 ０3 ：７５重量％、ＳｉＣ：１０重量
％、Ｃ：１５重量％の耐火煉瓦を用いて升状枠体を形成
し、Ａｌ2 ０3 ：７７重量％、ＳｉＯ2 ：１５重量％、
ＭｇＯ：８重量％に配合した不定形耐火物を充填施工し
た。図２に示す従来の大型プレキャストブロックを配置
した場合は約６０ＣＨでパーマネントライニング１が露
出していたが、本発明の施工方法で構成した湯当たり部
位のライニングは１００ＣＨの寿命を示した。Example 1 As shown in FIG. 1, a fireproof brick of Al 2 O 3 : 75% by weight, SiC: 10% by weight, and C: 15% by weight was used in a box shape in the hot water contact part of a hot metal mixer having a capacity of 250 tons of hot metal. Forming a frame, Al 2 O 3 : 77% by weight, SiO 2 : 15% by weight,
An irregular shaped refractory mixed with MgO: 8% by weight was filled and constructed. When the conventional large precast block shown in FIG. 2 was arranged, the permanent lining 1 was exposed at about 60 CH, but the lining of the hot water contact portion constituted by the construction method of the present invention showed a life of 100 CH.
【００１９】実施例２ 実施例１と同じ混銑車に、表１に示す仕様で図１に示す
ライニング施工をした。比較例は施工した耐火物の材質
を同じにし、升状枠体の肉厚を薄くした場合、不定形耐
火物の充填表面積を小さくした場合を示す。試験方法
は、通常の混銑車の操業を行い、湯当たり部が溶損され
て、背面のパーマネントライニング１の煉瓦が露出する
までのチャージ数で比較を行った。表２に使用した耐火
物の化学組成を示す。Example 2 The same mixed piggy car as in Example 1 was subjected to the lining construction shown in FIG. 1 according to the specifications shown in Table 1. The comparative example shows the case where the materials of the refractory materials used were the same, the wall thickness of the box-shaped frame was thin, and the filling surface area of the irregular refractory material was small. As a test method, a normal hot metal truck was operated, and a comparison was made by the number of charges until the bricks of the permanen lining 1 on the back surface were exposed because the hot water contact part was melted. Table 2 shows the chemical composition of the refractories used.
【００２０】[0020]
【表１】 [Table 1]
【００２１】[0021]
【表２】 試験の結果、本発明の施工方法による湯当たり部は、パ
ーマネントライニング層の煉瓦が露出するまでに１００
ＣＨ稼働できたが、升煉瓦の肉厚が薄い比較例１では、
升煉瓦の突出部分で部分的に不定形耐火物の膨張応力に
よると見られる煉瓦４の折損があり、３０ＣＨで不定形
耐火物が無くなり背面のパーマネントライニングの煉瓦
が露出した。升の面積の狭い比較例２では、５０ＣＨで
パーマネントライニングの煉瓦が露出した。また、スポ
ーリングと思われる升煉瓦４の剥離欠落が見られたが、
主因は不定形耐火物の圧縮応力を不定形耐火物自身で吸
収できず、座屈したものと思われる。[Table 2] As a result of the test, the hot water contact part by the construction method of the present invention was 100 before the brick of the permanen lining layer was exposed.
Although CH operation was possible, in Comparative Example 1 where the wall thickness of the brick is thin,
At the protruding part of the brick, there was a breakage of the brick 4 which was considered to be due to the expansion stress of the irregular refractory, and at 30 CH, the irregular refractory disappeared and the brick of permanent lining on the back surface was exposed. In Comparative Example 2 in which the area of the box was small, the brick of permanent lining was exposed at 50CH. In addition, although peeling and missing of the brick 4 which was considered to be spalling was observed,
The main cause seems to be buckling because the amorphous refractory itself cannot absorb the compressive stress of the irregular refractory.
【００２２】[0022]
【発明の効果】以上説明した本発明により、混銑車の湯
当たり部の寿命延長が達成され、それに伴い大幅な耐火
物コストの削減が可能となった。As described above, according to the present invention, the service life of the hot water contact portion of the hot metal can be extended, and the refractory cost can be greatly reduced accordingly.
【図１】本発明の湯当たり部のライニング構造の側面と
平面図。FIG. 1 is a side view and a plan view of a lining structure for a hot water contact portion of the present invention.
【図２】従来の湯当たり部のライニング構造の側面図。FIG. 2 is a side view of a conventional lining structure for a hot water contact part.
１ パーマネントライニング ２ ウエアライニング ３ プレキャストブロック ４ 長尺煉瓦 ５ 升状の枠体 ６ 不定形耐火物 1 Permanent lining 2 Wear lining 3 Precast block 4 Long brick 5 Box-like frame 6 Unshaped refractory
Claims (3)
範囲に、耐火煉瓦でウエアライニグ面より突出させて升
状の枠体を構成し、該升状枠体内に膨張・収縮量を調整
した不定形耐火物を充填することを特徴とする混銑車の
湯当たり部の施工方法。1. A box-like frame body is formed of refractory bricks so as to project from the wear lining surface in a range corresponding to a hot water contact portion of a piggyback car, and expansion and contraction amounts are set in the box-like frame body. A method of constructing a hot water contact portion of a mixed pig car, which is characterized by filling an adjusted amorphous refractory material.
５０mmの耐火煉瓦で、不定形耐火物の充填深さ１００〜
１５０mmに構成することを特徴とする請求項１記載の混
銑車の湯当たり部の施工方法。2. The box-shaped frame body having a wall thickness of 100 mm to 2
50mm refractory brick with a filling depth of 100 ~
The method for constructing a hot water contact portion of a towed pig car according to claim 1, wherein the hot water contact portion is configured to have a thickness of 150 mm.
物の充填表面積を０．６〜１．５ｍ2 とすることを特徴
とする請求項１又は２記載の混銑車の湯当たり部の施工
方法。3. The hot water contact portion of the mixed pig wheel according to claim 1 or 2, wherein the filling surface area of the irregular refractory material to be filled in the box-shaped frame body is 0.6 to 1.5 m 2. Construction method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14942393A JPH073317A (en) | 1993-06-21 | 1993-06-21 | Method for lining molten iron heating part in mixer car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14942393A JPH073317A (en) | 1993-06-21 | 1993-06-21 | Method for lining molten iron heating part in mixer car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH073317A true JPH073317A (en) | 1995-01-06 |
Family
ID=15474792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14942393A Withdrawn JPH073317A (en) | 1993-06-21 | 1993-06-21 | Method for lining molten iron heating part in mixer car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073317A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100821131B1 (en) * | 2001-10-08 | 2008-04-11 | 주식회사 포스코 | A method for partly repair refractory brick of converter |
| KR101436088B1 (en) * | 2012-12-13 | 2014-08-29 | 주식회사 포스코 | Refractory block, container and method for forming refractory |
-
1993
- 1993-06-21 JP JP14942393A patent/JPH073317A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100821131B1 (en) * | 2001-10-08 | 2008-04-11 | 주식회사 포스코 | A method for partly repair refractory brick of converter |
| KR101436088B1 (en) * | 2012-12-13 | 2014-08-29 | 주식회사 포스코 | Refractory block, container and method for forming refractory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000905 |