JPH05843A - Refractory block for molten iron striking part of torpedo ladle car - Google Patents
Refractory block for molten iron striking part of torpedo ladle carInfo
- Publication number
- JPH05843A JPH05843A JP3177109A JP17710991A JPH05843A JP H05843 A JPH05843 A JP H05843A JP 3177109 A JP3177109 A JP 3177109A JP 17710991 A JP17710991 A JP 17710991A JP H05843 A JPH05843 A JP H05843A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- pts
- molten iron
- refractory
- 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- Withdrawn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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract 8
- 229910052742 iron Inorganic materials 0.000 title abstract 4
- 239000000835 fiber Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 abstract description 12
- 230000035939 shock Effects 0.000 abstract description 11
- 230000003628 erosive effect Effects 0.000 abstract description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 239000011819 refractory material Substances 0.000 description 8
- 239000011449 brick Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000013329 compounding Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000004901 spalling Methods 0.000 description 3
- 241001071864 Lethrinus laticaudis Species 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、混銑車用耐火物に関
し、詳しくは、混銑車の湯当り部用耐火物ブロックに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refractory block for a mixed pig car, and more particularly to a refractory block for a hot water contact part of a mixed pig car.
【０００２】[0002]
【従来の技術】従来、高炉からの溶銑を製鋼炉などに搬
送する場合、図１に示すような混銑車が用いられてい
る。図に示すように、混銑車１は魚雷形をしており、そ
の内張り耐火物２は、通常、耐火れんがを用いて構築さ
れており、受銑口３から注がれる溶銑が当るために大き
な衝撃を受ける湯当り部４も、通常は、高アルミナ質れ
んがなどの耐火れんがにより構築されている。2. Description of the Related Art Conventionally, when carrying hot metal from a blast furnace to a steelmaking furnace, a mixed piggy wheel as shown in FIG. 1 has been used. As shown in the figure, the torpedo car 1 has a torpedo shape, and its refractory lining 2 is usually constructed by using refractory bricks, which is large because the hot metal poured from the pigeonhole 3 hits it. The hot water contact portion 4 that is subjected to an impact is also usually constructed by refractory bricks such as high alumina bricks.
【０００３】そして、混銑車の内張り耐火物の寿命は、
受銑口の溶銑摩耗、スラグラインのスラグによる溶損や
構造スポーリング、炉体一般の溶銑による流動摩耗など
にも影響されるが、主として、湯当り部の損傷の程度に
支配される。この湯当り部の損傷形態としては、溶銑に
よる衝撃摩耗（機械的摩耗）、溶銑や高炉スラグによる
侵食、熱衝撃によるスポーリング損傷、あるいは目地部
への溶銑の浸透による局部損傷（ペンシリング損傷）な
どが主要なものである。The life of refractory linings for towed cars is
It is also affected by the hot metal wear of the hot metal, the slag line slag erosion and structural spalling, and the flow wear of the general hot metal of the furnace body. The form of damage to the molten metal contact area is impact wear due to hot metal (mechanical wear), erosion due to hot metal or blast furnace slag, spalling damage due to thermal shock, or local damage due to penetration of hot metal into joints (pencilling damage). Etc. are the main ones.
【０００４】[0004]
【発明が解決しようとする課題】上述のように、混銑車
の内張り耐火物の寿命は、湯当り部の耐火物（通常は高
アルミナ質れんが）の耐久性（寿命）に支配されるが、
近年は混銑車において溶銑予備処理が行われるようにな
り、それにともなって、混銑車の操業条件は、ますます
厳しさを増し、従来の湯当り部用の耐火物では、実用上
必ずしも十分な耐久性が得られなくなっている。そこ
で、湯当り部用耐火物の寿命、すなわち混銑車の寿命を
延ばすために、耐衝撃摩耗（機械的摩耗）性、耐侵食
性、耐スポーリング損傷性、あるいは耐局部損傷性（ペ
ンシリング損傷性）などの特性に優れた湯当り部用の耐
火物に対する要求が高まっている。As described above, the life of the refractory lining refractory of the hot metal is governed by the durability (life) of the refractory (usually high alumina brick) in the hot water contact part,
In recent years, hot metal pretreatment has been performed on hot metal trucks, and the operating conditions for hot metal trucks have become more and more stringent, and conventional refractory materials for hot water contact parts do not have sufficient durability for practical use. The nature is no longer obtained. Therefore, in order to extend the life of the refractory for hot water contact, that is, the life of the hot metal car, impact wear resistance (mechanical wear resistance), erosion resistance, spalling damage resistance, or local damage resistance (pencilling damage resistance) There is an increasing demand for refractory materials for hot water contact parts, which have excellent properties such as
【０００５】この発明は上記問題点を解決するものであ
り、湯当り部の目地をなくして、ペンシリング損傷を防
止することが可能で、かつ、溶銑や高炉スラグによる侵
食や熱衝撃に対して高い抵抗性を有する、混銑車の湯当
り部用耐火物ブロックを提供することを目的とする。The present invention is intended to solve the above-mentioned problems, and it is possible to eliminate the joints in the hot water contact portion to prevent penciling damage, and to prevent erosion and thermal shock by the hot metal and blast furnace slag. An object of the present invention is to provide a refractory block for a hot water contact portion of a hot metal car having high resistance.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、この発明の混銑車の湯当り部用耐火物ブロックは、
Ａｌ2Ｏ3：５０〜８０重量部、ＳｉＯ2：５〜３０重量
部、ＳｉＣ：５〜２０重量部、Ｃ：１〜５重量部を含有
する配合耐火原料１００重量部に対して０．５〜５重量
部のステンレスファイバーを添加し、これを混練して所
定の形状に成形した後、熱処理したことを特徴とする。In order to achieve the above object, a refractory block for a hot water contact part of a mixed pig car according to the present invention comprises:
Al 2 O 3 : 50 to 80 parts by weight, SiO 2 : 5 to 30 parts by weight, SiC: 5 to 20 parts by weight, C: 0.5 to 100 parts by weight of the mixed refractory raw material containing 1 to 5 parts by weight. It is characterized by adding up to 5 parts by weight of stainless fiber, kneading the mixture into a predetermined shape, and then heat-treating it.
【０００７】[0007]
【作用】この発明の耐火物ブロックは、あらかじめ所定
の形状に成形（ブロック化）されているため、従来例の
ように、耐火れんがを施工した場合に形成されるような
目地をなくすことが可能になり、ペンシリング損傷を効
果的に防止することができる。また、この発明の耐火物
ブロックは、上記のような配合割合で各成分を配合し、
かつ、ステンレスファイバーを０．５〜５重量部添加し
た耐火物原料を用いて形成されているので、溶銑や高炉
スラグの侵食に対して十分な抵抗性を有し、かつ、優れ
た耐熱衝撃性を備えている。Since the refractory block of the present invention is molded (blocked) into a predetermined shape in advance, it is possible to eliminate the joints formed when a refractory brick is installed as in the conventional example. Therefore, it is possible to effectively prevent the pencil damage. Further, the refractory block of the present invention contains the respective components in the mixing ratio as described above,
Moreover, since it is formed using a refractory raw material to which 0.5 to 5 parts by weight of stainless fiber is added, it has sufficient resistance to corrosion of hot metal and blast furnace slag, and has excellent thermal shock resistance. Is equipped with.
【０００８】さらに、この発明の耐火物ブロックは、所
定の形状にブロック化されているので、クレーンなどを
用いて混銑車内の所定の位置にセットすることにより、
容易に施工することができるため、施工時間を短縮して
コストダウンを図ることができる。Further, since the refractory block of the present invention is formed into a block having a predetermined shape, it can be set at a predetermined position in the tow truck by using a crane or the like.
Since the construction can be easily performed, the construction time can be shortened and the cost can be reduced.
【０００９】なお、この発明において、配合耐火原料中
のＡｌ2０3の配合割合を５０〜８０重量部としたのは、
Ａｌ2Ｏ3が５０重量部未満になると耐食性が低下し、８
０重量部を越えると耐熱衝撃性が劣化することによる。In the present invention, the mixing ratio of Al 2 O 3 in the mixed refractory raw material is 50 to 80 parts by weight.
When Al 2 O 3 is less than 50 parts by weight, the corrosion resistance decreases,
This is because if it exceeds 0 parts by weight, the thermal shock resistance deteriorates.
【００１０】また、ＳｉＣは、耐火物に耐熱衝撃性や、
耐化学反応性を付与するものであり、その配合割合を５
〜２０重量部としたのは、５重量部未満では、配合の効
果が認められず、また、２０重量部を越えて配合して
も、配合の効果が向上せず、いたずらにコストを増大さ
せるからである。Further, SiC is a refractory material that has thermal shock resistance and
Chemical resistance is imparted, and its compounding ratio is 5
The amount of -20 parts by weight is less than 5 parts by weight, the effect of the compounding is not recognized, and even if it exceeds 20 parts by weight, the effect of the compounding is not improved and the cost is unnecessarily increased. Because.
【００１１】また、Ｃ（黒鉛）は熱伝導性を高め、か
つ、スラグやＦｅＯの浸透を抑制するために配合される
ものであり、１重量部未満では、配合の効果が認められ
ず、５重量部を越えると施工体の密充填を阻害し、耐食
性を損なうため、配合割合は１〜５重量部の範囲にある
ことが好ましい。C (graphite) is added to enhance the thermal conductivity and suppress the permeation of slag and FeO. If it is less than 1 part by weight, the effect of the addition is not recognized. When it exceeds the weight part, the close packing of the construction body is hindered and the corrosion resistance is impaired. Therefore, the mixing ratio is preferably in the range of 1 to 5 parts by weight.
【００１２】さらに、ステンレスファイバーは、亀裂の
発生・進行を抑制するために添加されるものであり、添
加量を０．５〜５重量部としたのは、０．５重量部未満
では、添加の効果が認められず、また、５重量部を越え
て添加しても、添加の効果が向上しないばかりでなく、
逆に、施工体の密充填を疎外するからである。Further, the stainless fiber is added in order to suppress the generation and progress of cracks, and the amount added is 0.5 to 5 parts by weight. Effect is not observed, and the effect of addition is not improved even if added in excess of 5 parts by weight.
On the contrary, this is because the dense packing of the construction body is excluded.
【００１３】なお、この発明の耐火物ブロックを用いた
場合、従来のように、耐火れんがを用いて湯当り部を形
成した場合と比較して、耐火材料費を低減することがで
きる（試算例では、耐火材料費を約６％低減することが
できた）。When the refractory block of the present invention is used, the refractory material cost can be reduced as compared with the conventional case where the hot water brick is used to form the hot water contact portion (trial calculation example). Then, the cost of refractory materials could be reduced by about 6%).
【００１４】[0014]
【実施例】以下、この発明の実施例を比較例とともに示
して、発明の特徴をさらに詳しく説明する。下記の表１
に示すような配合割合で各成分を配合して、不定形耐火
物（実施例１〜３）を調製するとともに、比較のため、
この発明の範囲外の配合割合で各成分を配合して、不定
形耐火物（比較例１〜６）を調製した。表１は、実施例
と比較例の各試料の配合割合と試験結果を示す。EXAMPLES The features of the present invention will be described in more detail below by showing examples of the present invention together with comparative examples. Table 1 below
Ingredients are blended in a blending ratio as shown in to prepare amorphous refractories (Examples 1 to 3), and for comparison,
The amorphous refractories (Comparative Examples 1 to 6) were prepared by mixing the components in a mixing ratio outside the range of the present invention. Table 1 shows the compounding ratio and the test result of each sample of the example and the comparative example.
【００１５】[0015]
【表１】 [Table 1]
【００１６】かさ比重 上記の表１の配合割合で配合した、実施例及び比較例の
不定形耐火物を混練し、４０×４０×１６０mmの型枠に
鋳込んで成形した。硬化後、脱枠して、１１０℃で２４
時間乾燥し、９００℃，１３００℃，１５００℃と異な
る温度で３時間焼成して測定用の試料を作成した。この
ようにして作成した実施例及び比較例の試料についてか
さ比重を測定した。その結果を表１に示す。 Bulk Specific Gravity The amorphous refractories of Examples and Comparative Examples, which were blended in the blending ratio shown in Table 1 above, were kneaded and cast into a 40 × 40 × 160 mm mold to mold. After curing, deframe and leave at 110 ° C for 24 hours
It was dried for an hour and baked at a temperature different from 900 ° C., 1300 ° C. and 1500 ° C. for 3 hours to prepare a sample for measurement. The bulk specific gravity was measured for the samples of Examples and Comparative Examples thus created. The results are shown in Table 1.
【００１７】耐食性指数 上記の表１の配合割合で配合し、これを混練、成形、乾
燥した後、１５００℃で３時間焼成して測定用の試料を
作成した。このようにして作成した実施例及び比較例の
試料について、溶銑：高炉スラグ＝１：１のロータリー
スラグテストを行い、各試料の溶損量を測定した。この
ロータリースラグテストにおける溶損量の比を、実施例
１の溶損量を１００として、指数で示したものが表１の
耐食性指数である。 Corrosion Resistance Index Compounds were blended in the blending ratio shown in Table 1 above, kneaded, molded, dried and then fired at 1500 ° C. for 3 hours to prepare a sample for measurement. A rotary slag test of hot metal: blast furnace slag = 1: 1 was performed on the samples of the examples and comparative examples prepared in this way, and the amount of erosion of each sample was measured. The corrosion resistance index in Table 1 shows the ratio of the amount of erosion in this rotary slag test as an index, with the amount of erosion in Example 1 as 100.
【００１８】耐熱衝撃性試験 上記の表１の配合割合で配合し、６０×１１５×２３０
mmの型枠に鋳込んで成形し、硬化後、脱枠して、１１０
℃で２４時間乾燥した試料の６０×１１５mmの面を、電
気炉において、１２００℃で１５分間加熱した後、１５
分間空冷するという加熱・冷却のサイクルを１０回繰り
返し、実施例及び比較例の各試料について、剥落の発生
の有無を目視観察した。 Thermal shock resistance test Blended in the blending ratio shown in Table 1 above, 60 × 115 × 230
It is cast into a mold of mm and molded, after curing, it is deframed and
After heating the 60 × 115 mm surface of the sample dried at 24 ° C. for 24 hours in an electric furnace at 1200 ° C. for 15 minutes,
The heating / cooling cycle of air cooling for 10 minutes was repeated 10 times, and each sample of Examples and Comparative Examples was visually observed for the occurrence of flaking.
【００１９】表１より、この発明の組成範囲内で配合さ
れ、上記のように作成された試料については、かさ比重
が比較例と略同等かあるいはそれよりも大きく、密充填
が行われていることがわかる。From Table 1, the samples prepared as described above, which were blended within the composition range of the present invention, had a bulk specific gravity substantially equal to or larger than that of the comparative example, and were densely packed. I understand.
【００２０】また、実施例の試料は、耐食性指数が、比
較例の剥落の認められない試料に比べて小さく、溶銑及
び高炉スラグに対する溶損量が小さいことがわかる。Further, it can be seen that the samples of the examples have a smaller corrosion resistance index than the samples of the comparative examples in which no flaking is observed, and the amount of erosion damage to the hot metal and blast furnace slag is small.
【００２１】さらに、実施例の試料については、耐熱衝
撃性試験において剥落の発生が認められず、溶銑による
熱衝撃に対する十分な抵抗性（耐熱衝撃性）を有してい
ることがわかる。Further, in the samples of the examples, no peeling was observed in the thermal shock resistance test, and it is understood that the samples have sufficient resistance to thermal shock due to hot metal (thermal shock resistance).
【００２２】[0022]
【発明の効果】上述のように、この発明の混銑車湯当り
部用耐火物ブロックは、Ａｌ2Ｏ3、ＳｉＯ2、ＳｉＣ及
びＣを含有する配合耐火原料１００重量部に対して、
０．５〜５重量部のステンレスファイバーを添加し、こ
れを混練して、所定の形状に成形した後、熱処理して作
成されるものであり、溶銑や高炉スラグの侵食に対して
大きな抵抗性を有し、耐熱衝撃性にも優れているととも
に、あらかじめ所定の形状に成形（ブロック化）されて
いるため、従来例のように、耐火れんがを施工した場合
に形成されるような目地が形成されず、ペンシリング損
傷を効果的に防止することが可能になり、耐久性（寿
命）が向上する。As described above, the refractory block for the hot metal contact part of the present invention has 100 parts by weight of the mixed refractory raw material containing Al 2 O 3 , SiO 2 , SiC and C.
It is made by adding 0.5 to 5 parts by weight of stainless fiber, kneading it, shaping it into a predetermined shape, and then heat-treating it, which has great resistance to erosion of hot metal and blast furnace slag. It also has excellent thermal shock resistance and is molded (blocked) into a predetermined shape in advance, so it forms joints that are formed when fire bricks are installed, as in the conventional example. Therefore, it is possible to effectively prevent the penciling damage, and the durability (life) is improved.
【００２３】さらに、ブロック化することにより、施工
が容易になり、コストダウンを図ることができる。Further, by forming into blocks, the construction can be facilitated and the cost can be reduced.
【図１】混銑車の概略構造を示す断面図である。FIG. 1 is a cross-sectional view showing a schematic structure of a tow truck.
１ 混銑車 ２ 内張り耐火物 ３ 受銑口 ４ 湯当り部 1 mixed piggy car 2 refractory lining 3 pig iron port 4 hot water contact part
Claims (1)
Ｏ2：５〜３０重量部、ＳｉＣ：５〜２０重量部、Ｃ：
１〜５重量部を含有する配合耐火原料１００重量部に対
して０．５〜５重量部のステンレスファイバーを添加
し、これを混練して所定の形状に成形した後、熱処理し
たことを特徴とする混銑車湯当り部用耐火物ブロック。Claims: 1. Al 2 O 3 : 50 to 80 parts by weight, Si
O 2 : 5 to 30 parts by weight, SiC: 5 to 20 parts by weight, C:
0.5 to 5 parts by weight of stainless fiber is added to 100 parts by weight of the mixed refractory raw material containing 1 to 5 parts by weight, and the mixture is kneaded and molded into a predetermined shape, followed by heat treatment. A refractory block for the hot water contact area of a hot metal car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3177109A JPH05843A (en) | 1991-06-20 | 1991-06-20 | Refractory block for molten iron striking part of torpedo ladle car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3177109A JPH05843A (en) | 1991-06-20 | 1991-06-20 | Refractory block for molten iron striking part of torpedo ladle car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05843A true JPH05843A (en) | 1993-01-08 |
Family
ID=16025315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3177109A Withdrawn JPH05843A (en) | 1991-06-20 | 1991-06-20 | Refractory block for molten iron striking part of torpedo ladle car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101277608B1 (en) * | 2011-09-28 | 2013-06-21 | 현대제철 주식회사 | Skimmer and skimmer'refractory material of slag skimmer |
| WO2015113947A1 (en) | 2014-01-28 | 2015-08-06 | Vesuvius Crucible Company | Torpedo ladle comprising a corrugated portion and use of a refractory module |
-
1991
- 1991-06-20 JP JP3177109A patent/JPH05843A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101277608B1 (en) * | 2011-09-28 | 2013-06-21 | 현대제철 주식회사 | Skimmer and skimmer'refractory material of slag skimmer |
| WO2015113947A1 (en) | 2014-01-28 | 2015-08-06 | Vesuvius Crucible Company | Torpedo ladle comprising a corrugated portion and use of a refractory module |
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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: 19980903 |