KR100267420B1 - The firebrick having a carbon - Google Patents

The firebrick having a carbon Download PDF

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Publication number
KR100267420B1
KR100267420B1 KR1019960065308A KR19960065308A KR100267420B1 KR 100267420 B1 KR100267420 B1 KR 100267420B1 KR 1019960065308 A KR1019960065308 A KR 1019960065308A KR 19960065308 A KR19960065308 A KR 19960065308A KR 100267420 B1 KR100267420 B1 KR 100267420B1
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South Korea
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carbon
oxidation
weight
brick
fireproof
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KR1019960065308A
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Korean (ko)
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KR19980046891A (en
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손수현
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이구택
포항종합제철주식회사
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/402—Aluminium
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J1/00—Adhesives based on inorganic constituents

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

PURPOSE: A fireproof adhesive for antioxidizing carbon containing-fireproof brick is provided, which increases an oxidation resistance of a line-shaped joint part and a rear side part of the carbon containing-fireproof brick and consequently improves the life span of the fireproof brick. CONSTITUTION: In the fireproof adhesive for antioxidizing carbon containing-fireproof brick, about 10-30 wt.% of oil is contained in a mixture prepared by mixing one or two kinds selected from metal, aluminum, magnesium and silicone with non-crystalline carbon in a weight ratio of 5:95-15:85.

Description

카본함유 내화벽돌의 산화방지용 내화 접착재Fire-resistant adhesive for preventing oxidation of carbon-containing refractory bricks

본 발명은, Al2O3- C, Al2O3- MgO - C, Al2O3- 스피넬(Spinel) - C, Al2O3- SiC - C, MgO - C, 및 MgO - SiC - C 등 카본을 함유한 내화벽돌을 제철 및 제강용으로 사용할 때 카본 함유 내화벽돌의 줄눈부와 배면의 산화를 방지하기 위하여 사용되는 카본 함유 내화벽돌의 산화 방지용 내화접착재에 대한 것이다.The present invention, Al 2 O 3 -C, Al 2 O 3 -MgO-C, Al 2 O 3 -Spinel-C, Al 2 O 3 -SiC-C, MgO-C, and MgO-SiC- The present invention relates to a fire-resistant adhesive for preventing oxidation of carbon-containing refractory bricks, which is used to prevent oxidation of joints and backs of carbon-containing refractory bricks when carbon-containing refractory bricks are used for steelmaking and steelmaking.

일반적으로 제철 및 제강용 각종 요로에는 Al2O3- C, Al2O3- MgO - C, Al2O3- 스피넬(Spinel) - C, Al2O3- SiC - C, MgO - C, 및 MgO - SiC - C 등 카본을 함유한 내화벽돌이 다량 사용되고 있다.Generally, various urinary furnaces for steel and steelmaking include Al 2 O 3 -C, Al 2 O 3 -MgO-C, Al 2 O 3 -Spinel-C, Al 2 O 3 -SiC-C, MgO-C, And refractory bricks containing carbon such as MgO-SiC-C are used in large quantities.

이러한 내화벽돌은 용강이나 슬래그(Slag)에 대한 내식성은 우수하나 사용할 때 내화 벽돌의 줄눈부와 배면에 산화가 발생되어 내화벽돌이 열화되어 수명이 저하한다.Such refractory bricks are excellent in corrosion resistance to molten steel or slag, but when used, oxidation occurs at joints and rear surfaces of the refractory bricks, resulting in deterioration of the refractory bricks and deterioration of life.

또한, 카본 함유 내화벽돌에 사용되는 수계 몰탈(Mortar)은 예열시 수증기를 발생하여 내화벽돌의 특성을 저하시키고 특히 배면에 사용될 경우에는 가동면에 사용되는 카본 함유 내화벽돌과 카본 함유 내화벽돌의 배면에 사용되는 영구장(Permanent Lining)이나 준영구장 내화벽돌과의 반응 용착을 초래하여 해체성이 불량한 단점이 있다.In addition, water-based mortar used in carbon-containing refractory bricks generates water vapor during preheating, deteriorating the characteristics of the refractory bricks, and in particular, when used on the rear surface, the back surface of the carbon-containing refractory bricks and the carbon-containing refractory bricks used in the movable surface It has a disadvantage of poor dismantling due to reaction welding with permanent lining or semi-permanent refractory brick.

또한, 기존의 사용되고 있는 카본계 몰탈은 80 - 95 중량 % 의 인상흑연과 5- 20 중량 % 의 내화원료를 사용하여 카본 함유 내화벽돌의 해체성을 좋게 할 목적으로 사용되고 있으나, 물이 50 - 100 중량 % 첨가되어 시공되는 내화 재료이고 산화 방지용 금속을 사용하지 않으므로 수분 증발에 의한 카본 함유 내화 벽돌의 카본이 산화되어 손상되는 것을 방지하는 데 효과적이지 못한 문제가 있으므로 카본 함유 내화벽돌의 내용성 향상의 개선이 요구되었다.In addition, the existing carbon-based mortar is used to improve the dismantling performance of the carbon-containing refractory brick using 80-95% by weight of graphite and 5- 20% by weight of refractory raw materials, but water is 50-100 Since it is a refractory material to be added by weight% and does not use an anti-oxidation metal, there is a problem in that it is not effective in preventing the carbon of the carbon-containing refractory bricks from being oxidized and damaged due to evaporation of water. Improvement was required.

본 발명은 상기 설명한 종래 기술의 문제를 해소하기 위하여 이루어진 것으로, 카본 함유 내화벽돌의 줄눈부와 배면부의 산화를 방지하고 사용후 해체성이 우수한 카본 함유 내화벽돌의 산화 방지용 내화 접착재를 제공하는 것을 목적으로 한다.SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art described above, and an object thereof is to provide a fire-resistant adhesive material for preventing oxidation of carbon-containing refractory bricks, which prevents oxidation of joints and rear portions of carbon-containing refractory bricks and excellent disassembly after use. It is done.

상기 목적을 달성하기 위하여 본 발명에서는, 금속 Al,Mg, 및 Si 중의 1 종 또는 2 종과 비정질 카본이 중량비로 5:95 - 15:85 의 비율로 혼합된 혼합물에 오일이 외삽으로 10 - 30 중량 % 함유되어 이루어지는 것을 특징으로 하는 카본 함유 내화벽돌용 산화 방지용 내화 접착재를 제공한다.In order to achieve the above object, in the present invention, oil is extrapolated to a mixture of one or two of the metals Al, Mg, and Si and amorphous carbon in a weight ratio of 5: 95-15: 85. Provided is an anti-oxidation fire resistant adhesive for carbon-containing refractory bricks, which comprises by weight%.

이하에서는 본 발명의 카본 함유 내화벽돌용 산화 방지용 내화 접착재를 상세하게 설명 한다.Hereinafter, the oxidation-resistant fireproof adhesive for carbon-containing firebrick of the present invention will be described in detail.

본 발명의 카본 함유 내화벽돌용 산화 방지용 내화 접착재는, 금속 Al, Mg 및 Si 중의 1 종 또는 2 종과 비정질 카본이 중량비로 5:95 - 15:85 의 비율로 혼합된 혼합물에 오일이 외삽으로 10 - 30 중량 % 함유되어 이루어지는 것을 특징으로 한다.The oxidation-resistant refractory adhesive for carbon-containing refractory bricks according to the present invention is obtained by extrapolating oil to a mixture of one or two of Al, Mg, and Si and amorphous carbon in a weight ratio of 5:95-15:85. It is characterized by consisting of 10 to 30% by weight.

카본 함유 내화벽돌의 산화 방지용 내화 접착재에 있어서 비정질 카본의 산화를 방지하기 위하여 금속 분말상인 Mg, Al, Si 중의 1 종 또는 2 종을 포함하는데, 이는 카본 함유 내화벽돌에 합유되어 있는 산화 방지제를 고려하여야 하기 때문이다.In the refractory adhesive material for preventing oxidation of carbon-containing refractory bricks, in order to prevent oxidation of amorphous carbon, one or two of metal powders of Mg, Al, and Si are included, which is considered to be an antioxidant contained in the carbon-containing refractory brick. Because it must.

Mg, Al, Si 에 대해 특별히 한정하는 것은 없고, 상용의 금속 분말을 사용하여도 무방하나 금속 분말의 첨가 효과가 충분히 발휘되도록 입자 크기가 50μm이하인 것이 바람직하며, 불순물에 의한 반응을 억제하기 위하여 순도 95% 이상인것이 바람직 하다. Mg, Al, Si 중의 1 종 또는 2 종과 혼합되는 비정질 카본의 혼합비는 중량비로 5:95 - 15:85 이어야 한다.There is no particular limitation on Mg, Al, and Si, but a commercial metal powder may be used, but the particle size is preferably 50 μm or less so that the effect of addition of the metal powder is sufficiently exhibited. It is preferable that it is 95% or more. The mixing ratio of amorphous carbon mixed with one or two of Mg, Al and Si should be 5:95-15:85 by weight.

이러한 수치 한정의 이유는, 금속의 양이 15 중량 % 이상이면 사용할 때 산화물 생성에 의한 체적 팽창에 의하여 줄눈부의 갭(Gap)이 커져 카본 함유 내화벽돌의 손상을 초래하며, 금속의 양이 5 중량 % 이하이면 비정질 카본의 산화 방지 효과가 미약하여 카본 함유 내화벽돌의 줄눈부나 배면의 산화 방지력이 저하된다.The reason for the numerical limitation is that when the amount of the metal is 15% by weight or more, the gap of the joint becomes large due to the volume expansion caused by the formation of oxide when used, resulting in damage of the carbon-containing refractory brick, and the amount of the metal is 5% by weight. If it is% or less, the antioxidant effect of amorphous carbon is insignificant, and the antioxidant activity of the joint part or back surface of a carbon containing refractory brick falls.

이와 같이 이루어지는 금속 분말과 비점질 카본의 혼합물에 외삽으로 첨가되는 오일의 양은 10 - 30 중량% 이어야하는 데, 외삽으로 첨가되는 오일의 함유량이 10 중량 % 이하이면 오일이 부족하여 카본 함유 내화벽돌의 산화 방지용 내화재가 시공이 용이하지 않으며, 오일의 함유량이 30 중량 % 이상이면 오일의 함유량이 과다하여 시공시 카본 함유 내화벽돌의 산화 방지용 내화재가 홀러내리므로 시공상의 난점이 초래되기 때문이다.The amount of oil extrapolated to the mixture of the metal powder and the non-viscous carbon thus obtained should be 10 to 30% by weight. When the content of the extrapolated oil is 10% by weight or less, the oil is insufficient to provide the carbon-containing refractory brick. This is because the oxidation-resistant refractory material is not easy to be constructed, and if the oil content is 30% by weight or more, the oil content is excessive and the construction of the carbon-containing refractory bricks prevents the refractory material from being oxidized.

본 발명에서 사용되는 오일로서는 특별히 한정하는 것은 없으나, 인화성이 비교적 작고 잔류 탄소량이 비교적 많은 등유나 중유의 석유계가 바람직하다.The oil to be used in the present invention is not particularly limited, but kerosene or heavy oil petroleum is preferred because of its relatively low flammability and relatively high carbon content.

이하에서는 실시예와 관련하여 본 발명을 설명한다.Hereinafter, the present invention will be described with reference to Examples.

[실시예]EXAMPLE

표 1 에 나타낸 금속, Al, Mg, 및 Si 중 1 종 또는 2 종과 비정질 카본이 중량비로 5:95 - 15:85 인 혼합물에 오일을 외삽으로 10 - 30 중량 % 첨가하여 티밍래들 슬래그 라인(Slag Line)용 MgO - C 재질의 내화벽돌에 적용하여 실시예 1 - 3을 얻었다. 또한 실시예의 범위를 벗어난 범위에서 카본 함유 내화벽돌의 산화 방지용 내화재를 제조하여 비교예 1 - 4 를 얻었다. 금속 Al, Mg, 및 Si 중 1 종 또는 2 종과 비정질 카본이 중량비로 5:95 - 15:85 인 혼합물에 오일을 외삽으로 10 - 30 중량 % 첨가하여 얻은 실시예 1 - 3 에 의하면 본 발명에서 의도하였던 소기의 효과가 얻어졌으나, 본 발명의 범위를 벗어난 비교예 1- 4 의 혼합물에 의하면 카본 함유 내화벽돌의 산화 방지 효과가 미약하거나 시공상의 난점이 발생되었다.Timing ladle slag line by adding 10-30% by weight of oil extrapolated to a mixture of one or two of the metals, Al, Mg, and Si shown in Table 1 and amorphous carbon in a weight ratio of 5:95-15:85 Example 1-3 was obtained by applying to the firebrick of MgO-C material for (Slag Line). Moreover, the refractory material for the oxidation prevention of the carbon containing refractory brick was produced in the range outside the Example, and the comparative examples 1-4 were obtained. According to Examples 1 to 3 obtained by extrapolating 10-30% by weight of oil to a mixture in which one or two of the metals Al, Mg, and Si and amorphous carbon are 5: 95-15: 85 by weight. Although the intended effect intended by the above was obtained, according to the mixture of Comparative Examples 1-4 outside the scope of the present invention, the oxidation preventing effect of the carbon-containing refractory brick was weak or construction difficulties were generated.

배면산화층두께*`(mm):96 ch 사용후 MgO - C 재질의 내화벽돌의 잔존량이 50 mm 인 것을 기준으로 하였을 때 배면의 산화층 두께Back oxide layer thickness * ` (mm): Back side oxide layer thickness based on 50mm residual amount of fire brick of MgO-C material after using 96 ch

줄눈부 손상지수*`*:MgO-C 재질의 내화벽돌의 줄눈부와 중간부의 잔존 두께비(즉, 줄눈부 두께/ 중간부 두께)Joint damage index * `* : Residual thickness ratio of joint and middle part of MgO-C firebrick (ie joint thickness / middle thickness)

해체 지수*`**`:비교예 1 의 카본 함유 내화벽돌 산화 방지용 내화재를 사용하였을 경우의 티밍 래들 슬래그 라인부 내화벽돌 해체시 인위적 충격회수를 기준으로 하였을 경우의 비교지수Dismantling index * `**` : Comparison index based on artificial impact times when dismantling refractory bricks of Timing Ladle Slag Line part using carbon-resistant refractory brick oxidation-resistant refractory material of Comparative Example 1

이와 같은 본 발명에 피하여 제조리는 카본 함유 대화벽돌의 산화방지용 내화재는 우수한 산화 방지 효과를 나타내었다In order to avoid the present invention, the refractory materials for oxidation of carbon-containing large bricks exhibited excellent antioxidant effects.

따라서, 상시 설명한 본 발명의 카본 함유 내화벽돌의 산화방지용 내화재에 의하면, 카본 함유 내화벽돌의 줄눈부와 배면부의 산화 저항성을 증진시킬 수 있으므로 내화 벽돌의 열화를 방지하여 수명을 향상시킬 수 있음과 동시에 해체성도 양호하여 원가 절감에 기여할 수 있는 유용한 발명인 것이다.Therefore, according to the fire-resistant material for preventing oxidation of the carbon-containing refractory brick of the present invention described above, the oxidation resistance of the joint and the rear part of the carbon-containing refractory brick can be improved, thereby preventing the deterioration of the refractory brick and improving the life. It is a useful invention that can contribute to cost reduction because of good disassembly.

Claims (1)

금속, Al, Mg, 및 Si 중의 1 종 또는 2 종과 비정질 카본이 중량비로 5:95 -15:85 의 비율로 혼합된 혼합물에 오일이 외삽으로 10 - 30 중량 % 함유되어 이루어지는 것을 특징으로 하는 카본 함유 내화벽돌 산화 방지용 내화 접착재.10 to 30% by weight of oil is extrapolated to a mixture in which one or two of metals, Al, Mg, and Si and amorphous carbon are mixed at a weight ratio of 5:95 -15: 85. Fire-resistant adhesive for carbon-containing refractory brick oxidation prevention.
KR1019960065308A 1996-12-13 1996-12-13 The firebrick having a carbon KR100267420B1 (en)

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KR20020050981A (en) * 2000-12-22 2002-06-28 신현준 Refractory Materials to Prevent Oxidation of Bricks Containing Carbon
KR100569752B1 (en) * 2001-12-22 2006-04-10 주식회사 포스코 Refractory mortar with acid and neutral compositions
KR100601086B1 (en) * 2001-12-22 2006-07-14 주식회사 포스코 Refractory mortar for basic refractory bricks
KR20030053258A (en) * 2001-12-22 2003-06-28 주식회사 포스코 Refractory mortar with high durability

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