KR100674620B1 - Compound for mgo-c brick improving oxidation resistance - Google Patents

Compound for mgo-c brick improving oxidation resistance Download PDF

Info

Publication number
KR100674620B1
KR100674620B1 KR1020050096122A KR20050096122A KR100674620B1 KR 100674620 B1 KR100674620 B1 KR 100674620B1 KR 1020050096122 A KR1020050096122 A KR 1020050096122A KR 20050096122 A KR20050096122 A KR 20050096122A KR 100674620 B1 KR100674620 B1 KR 100674620B1
Authority
KR
South Korea
Prior art keywords
magnesia
carbon
metal
powder
oxidation resistance
Prior art date
Application number
KR1020050096122A
Other languages
Korean (ko)
Inventor
홍기곤
Original Assignee
주식회사 포스코
재단법인 포항산업과학연구원
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코, 재단법인 포항산업과학연구원 filed Critical 주식회사 포스코
Priority to KR1020050096122A priority Critical patent/KR100674620B1/en
Application granted granted Critical
Publication of KR100674620B1 publication Critical patent/KR100674620B1/en

Links

Images

Classifications

    • 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
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
    • 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
    • C04B2235/405—Iron group metals
    • 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
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

Magnesia carbon(MgO-C) based brick composition for furnace body such as converter or ladle is provided to produce a brick for fabricating the furnace body with excellent oxidation resistance in case of processing steel or un-oxidized steel with high oxygen content by comprising magnesia clinker, carbon, liquid and solid phenol resin and externally adding metal Fe to the composition. The composition includes: primary magnesia-carbon fraction containing magnesia clinker, carbon, liquid and solid phenol resin; and external additive in amount of 0.1 to 10wt.% based to 100wt.% of the primary fraction. The external additive is metal Fe powder. If the metal Fe powder is used in combination with any of typical metal powder, carbide, boride, inorganic salts, etc., the magnesia-carbon fraction shows improved oxidation resistance. Preferably, the metal Fe powder is in Fe compound form and has purity more than 95%.

Description

마그네시아 카본질 내화벽돌 조성물{Compound for MgO-C brick improving oxidation resistance}Compound for MgO-C brick improving oxidation resistance

도 1은 본 발명의 내화벽돌 조성물의 특성 비교표이다.1 is a comparative table of the properties of the refractory brick composition of the present invention.

본 발명은 내화벽돌 조성물에 관한 것으로서, 더욱 상세하게는 용강을 제조할 때에 사용되는 전로(Converter)나 레이들(Ladle) 등의 노체용 내장 내화물로 사용되는 마그네시아-카본질 내화벽돌에 관한 것이며 특히 산소 함유량이 높은 강종에 대한 내산화성이 우수하여 노체의 수명을 향상시킬 수 있는 마그네시아-카본질 내화벽돌의 내산화성을 증진시키는 마그네시아-카본질 내화벽돌 조성물에 관한 것이다.The present invention relates to a refractory brick composition, and more particularly, to a magnesia-carbon refractory brick used as an internal refractories for furnaces such as converters and ladles used in manufacturing molten steel. The present invention relates to a magnesia-carbon refractory brick composition which improves the oxidation resistance of a magnesia-carbon refractory brick capable of improving the life of a furnace by excellent oxidation resistance to a steel species having a high oxygen content.

종래기술에서는 마그네시아-카본질 내화벽돌의 내산화성 증진을 위해서 일반적으로 Al, Mg, Si 등의 금속, SiC와 같은 탄화물 및 붕화물 등이 사용되어 왔다. 그러나, 이러한 산화방지제들은 산소 함유량은 고 산소강이나 미탈산강을 처리하는 노체에 사용될 경우에는 카본의 산화를 효과적으로 억제하지 못하여 마그네시아-카본질 내화벽돌의 내산화성을 급격히 저하시키는 문제점을 가진다. 또한, 카본의 산화로 생성된 산화층의 소결성이 미약하여 용강의 와류에 의한 마모저항성을 저하시키거나 슬래그(Slag)에 의한 침윤을 증가시키는 문제점을 가진다.In the prior art, metals such as Al, Mg and Si, carbides and borides such as SiC, and the like have been generally used to improve oxidation resistance of magnesia-carbon refractory bricks. However, these antioxidants have a problem in that the oxygen content does not effectively inhibit the oxidation of carbon when used in a furnace for treating high oxygen steel or mithalated steel, thereby rapidly decreasing the oxidation resistance of the magnesia-carbon refractory brick. In addition, the sintering property of the oxide layer produced by the oxidation of carbon is weak, so that the wear resistance due to the vortex of molten steel is reduced or the infiltration by slag (slag) is increased.

이러한 산화저항성을 증진시키고자 하는 방법으로, 일본 공개특허공보 평10-226573호는 금속유기화합물이나 금속염 등을 액체상태로 하여 탄소 성형체의 표면에 코팅하는 방법을 제시하고 있다. 그러나, 이와 같은 방법은 원료가 매우 고가여서 비용이 과다하게 발생하는 문제점과 함께 표면에 형성된 코팅층이 쉽게 손상될 수 있다는 문제점을 가진다.As a method for enhancing such oxidation resistance, Japanese Patent Laid-Open No. 10-226573 proposes a method of coating a surface of a carbon molded body with a metal organic compound, a metal salt, or the like in a liquid state. However, this method has a problem that the coating layer formed on the surface can be easily damaged with the problem that the raw material is very expensive and excessively expensive.

따라서, 본 발명은 상술한 종래기술의 문제점을 해결하기 위한 것으로서, 마그네시아 클링커(clinker), 카본, 액상 및고상 페놀수지로 구성되는 통상의 마그네시아-카본질 내화물 조성에 외삽으로 금속 Fe 분말 을 함유하도록 함으로써 마그네시아-카본질 내화벽돌의 내산화성을 증진시킬 수 있도록 하는 마크네시아 카본질 내화벽돌 조성물을 제공하는 것을 그 목적으로 한다.Accordingly, the present invention is to solve the above-mentioned problems of the prior art, so as to contain the metal Fe powder by extrapolating to the usual magnesia-carbon refractory composition composed of magnesia clinker, carbon, liquid and solid phenolic resin. It is an object of the present invention to provide a magnesia carbonaceous refractory brick composition capable of enhancing oxidation resistance of magnesia-carbon refractory bricks.

상술한 목적을 달성하기 위한 본 발명의 마그네시아 카본질 내화벽돌 조성물은, 마그네시아 클링커(clinker), 카본, 액상 및 고상 페놀수지로 구성되는 마그네시아-카본질 내화물의 조성에, 마그네시아와 카본을 100중량%로 하였을 때 외삽으로 금속 Fe 분말을 0.1 ~ 10중량% 함유하는 것을 특징으로 한다.Magnesia carbonaceous refractory brick composition of the present invention for achieving the above object is 100% by weight of magnesia and carbon in the composition of magnesia-carbon refractory material composed of magnesia clinker, carbon, liquid and solid phenolic resin When characterized in that it comprises 0.1 to 10% by weight of the metal Fe powder by extrapolation.

본 발명에서는 마그네시아-카본질 내화벽돌의 조성물로서는 통상의 재질을 사용하여도 무방하며, 특별히 한정하는 것은 없다.In the present invention, as a composition of the magnesia-carbon refractory brick, a normal material may be used, and there is no particular limitation.

상술한 바와 같이 본 발명에서 마그네시아와 카본을 100중량%로 하였을 때 외삽으로 첨가되는 금속 Fe의 양은 0.1 ~ 10중량% 이어야 한다.As described above, when 100% by weight of magnesia and carbon in the present invention, the amount of metal Fe added by extrapolation should be 0.1 to 10% by weight.

상술한 바와 같이 본 발명에서 첨가되는 금속 Fe 분말의 첨가량은 0.1% 이상인 것인 바람직한데, 이는 금속 Fe 분말의 첨가량이 0.1중량% 이하가 되면 금속 Fe 분말의 첨가량이 부족하여 마그네시오 페라이트(Magnesioferrite, MgO·Fe2O3, 융점:1750 ℃)의 생성이 미약하므로 카본의 산화방지 효과가 발현되지 않기 때문이다.As described above, the addition amount of the metal Fe powder added in the present invention is preferably 0.1% or more. When the addition amount of the metal Fe powder is 0.1 wt% or less, the amount of addition of the metal Fe powder is insufficient, so that Magnesioferrite (Magnesioferrite, This is because the formation of MgO · Fe 2 O 3 , melting point: 1750 ° C.) is weak, and thus the antioxidant effect of carbon is not expressed.

또한, 상술한 본 발명에서는 첨가되는 금속 Fe 분말의 함유량은 10중량% 이하인 것이 바람직한데, 이는 금속 Fe 분말의 첨가량이 10중량% 이상이 되면 마그네시오페라이트의 생성량이 과다하여 마그네시아-카본질 내화벽돌의 내식성이 저하되기 때문이다.In addition, in the present invention described above, the content of the metal Fe powder to be added is preferably 10% by weight or less. When the amount of the metal Fe powder is added to 10% by weight or more, the amount of magnesia ferrite is excessive, resulting in the magnesia-carbon refractory brick. This is because the corrosion resistance of is lowered.

상술한 본 발명에서 금속 Fe 분말의 첨가효과는 통상적으로 사용되는 금속분말, 탄화물, 붕화물, 무기염류 등과 병용하여 사용하면 마그네시아-카본의 내산화성 증진 효과는 더욱 극대화된다.In the present invention described above, the addition effect of the metal Fe powder is used in combination with the metal powder, carbide, boride, inorganic salts, and the like, which are commonly used to further maximize the oxidation resistance of magnesia-carbon.

상술한 본 발명에서 첨가되는 상술한 금속 Fe분말은 Fe화합물의 형태로 첨가될 수도 있다. 이때, 상술한 본 발명에 사용되는 Fe 분말로서는 특별히 한정하는 것은 없으나, 마그네시아-카본질 내화벽돌의 내용성을 고려하여 순도 95% 이상인 것이 바람직하다.The above-described metal Fe powder added in the present invention described above may be added in the form of an Fe compound. At this time, the Fe powder used in the present invention described above is not particularly limited, but is preferably 95% or more in view of the solvent resistance of the magnesia-carbon refractory brick.

여기서 금속 Fe 분말의 입자크기로서는 특별히 한정하는 것은 없으나, 마그네시오페라이트 생성 및 산화방지 효과를 증진시키기 위해서는 입자크기가 작을수록 바람직하다.The particle size of the metal Fe powder is not particularly limited, but the smaller the particle size is preferable in order to enhance the production of magnesioferrite and the antioxidant effect.

<실시예 1><Example 1>

도 1은 본 발명의 내화벽돌 조성물의 특성 비교표(표 1)이다.1 is a comparative table (Table 1) of the characteristics of the refractory brick composition of the present invention.

도 1의 표 1에 나타낸 바와 같이 통상의 마그네시아-카본질 내화벽돌의 조성에 금속 Fe 분말을 0.1 ~10중량%를 첨가하여 50 X 50 X 50 mm 크기로 시편을 제조하여 공기중 1400℃에서 3시간 소성한 후 냉각하여 실시예 1~2를 얻었다.As shown in Table 1 of Figure 1 by adding 0.1 ~ 10% by weight of metal Fe powder to the composition of a typical magnesia-carbon refractory bricks to prepare a specimen in a size of 50 X 50 X 50 mm 3 at 1400 ℃ in air After baking for time, it cooled and obtained Examples 1-2.

또한, 통상의 마그네시아-카본질 내화벽돌의 조성에 실시예의 범위를 벗어난 범위에서 금속 Fe 분말을 첨가하여 50 X 50 X 50 mm 크기로 시편을 제조하여 공기 중 1400℃에서 3시간 소성한 후 냉각하여 비교예 1~2를 얻었다.In addition, by adding a metal Fe powder in the composition of a typical magnesia-carbon refractory brick outside the range of the embodiment to prepare a specimen in a size of 50 X 50 X 50 mm, and then calcined at 1400 ℃ in air for 3 hours and then cooled Comparative Examples 1-2 were obtained.

표1은 상술한 바와 같이 제작된 시편에서 1650℃ X 1시간 X 침식제(용강) 배제 X 15회 반복의 시험조건에서 회전침식시험을 실시한 후, 실시예 1을 100으로 하였을 때의 상대비교 값을 나타낸다.Table 1 shows the relative comparison values of Example 1 as 100 after the rotary erosion test was carried out under the test conditions of 1650 ° C X 1 hour X erosion agent (molten steel) X 15 repetition on the specimen prepared as described above. Indicates.

표 1에 도시된 바와 같이, 마그네시아 카본질 내화벽돌 조성물에 Fe를 첨가하는 경우에 있어서 금속 Fe 분말을 본원발명에서 제안하는 범위 즉, 0.1% ~ 10% 이내의 사용하는 실시예 1과 2에서, 내화벽돌 조성물에 Fe를 첨가하는 경우에 있어서 Fe를 본원발명에서 제안하는 범위 즉, 0.1% ~ 10%를 벗어나도록 조성한 경우에 비교하여 내산화성이 현저히 향상되는 것을 볼 수 있다.As shown in Table 1, in the case of adding Fe to the magnesia carbonaceous refractory brick composition, in Examples 1 and 2 in which the metal Fe powder is used within the range suggested by the present invention, that is, within 0.1% to 10%, When Fe is added to the refractory brick composition, it can be seen that the oxidation resistance is remarkably improved as compared with the case where Fe is formulated outside the range suggested by the present invention, that is, 0.1% to 10%.

상술한 본원발명은 마그네시아-카본질 내화벽돌이 산소 함유량이 높은 강종이나 미탈산강을 처리하는 경우에 우수한 내산화성을 가지도록 하는 효과를 제공한다.The present invention as described above provides the effect that the magnesia-carbon refractory brick has excellent oxidation resistance when treating high grade oxygen or mithalated steel.

Claims (1)

마그네시아 클링커, 카본, 액상 및 고상 페놀수지로 구성되는 마그네시아-카본질 내화물의 조성에, 마그네시아와 카본을 100중량%로 하였을 때 외삽으로 금속 Fe 분말 0.1 ~ 10중량%를 함유하는 것을 특징으로 하는 마그네시아 카본질 내화벽돌 조성물.Magnesia characterized in that the composition of magnesia-carbon refractory material consisting of magnesia clinker, carbon, liquid and solid phenolic resins is extrapolated to 0.1 to 10% by weight of metallic Fe powder by extrapolation of 100% by weight of magnesia and carbon. Carbonaceous refractory brick composition.
KR1020050096122A 2005-10-12 2005-10-12 Compound for mgo-c brick improving oxidation resistance KR100674620B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020050096122A KR100674620B1 (en) 2005-10-12 2005-10-12 Compound for mgo-c brick improving oxidation resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050096122A KR100674620B1 (en) 2005-10-12 2005-10-12 Compound for mgo-c brick improving oxidation resistance

Publications (1)

Publication Number Publication Date
KR100674620B1 true KR100674620B1 (en) 2007-01-29

Family

ID=38014938

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020050096122A KR100674620B1 (en) 2005-10-12 2005-10-12 Compound for mgo-c brick improving oxidation resistance

Country Status (1)

Country Link
KR (1) KR100674620B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120073976A (en) * 2010-12-27 2012-07-05 재단법인 포항산업과학연구원 Refractory compositions of high strength plug for tap hole of converter using by waste mg-cr brick
KR20120074048A (en) * 2010-12-27 2012-07-05 재단법인 포항산업과학연구원 Refractory compositions of plug for tap hole of converter using by waste mg-cr brick
KR102471943B1 (en) * 2022-03-18 2022-11-29 주식회사 제이케이메탈소재 Method for manufacturing ceramic sand for casting steel using recycled ferronickel(or Fe-Ni) slag

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020019702A (en) * 2000-09-06 2002-03-13 한종웅 Fireproof material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020019702A (en) * 2000-09-06 2002-03-13 한종웅 Fireproof material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120073976A (en) * 2010-12-27 2012-07-05 재단법인 포항산업과학연구원 Refractory compositions of high strength plug for tap hole of converter using by waste mg-cr brick
KR20120074048A (en) * 2010-12-27 2012-07-05 재단법인 포항산업과학연구원 Refractory compositions of plug for tap hole of converter using by waste mg-cr brick
KR101705230B1 (en) * 2010-12-27 2017-02-09 재단법인 포항산업과학연구원 REFRACTORY COMPOSITIONS OF PLUG FOR TAP HOLE OF CONVERTER USING BY WASTE Mg-Cr BRICK
KR101705231B1 (en) * 2010-12-27 2017-02-09 재단법인 포항산업과학연구원 REFRACTORY COMPOSITIONS OF HIGH STRENGTH PLUG FOR TAP HOLE OF CONVERTER USING BY WASTE Mg-Cr BRICK
KR102471943B1 (en) * 2022-03-18 2022-11-29 주식회사 제이케이메탈소재 Method for manufacturing ceramic sand for casting steel using recycled ferronickel(or Fe-Ni) slag

Similar Documents

Publication Publication Date Title
US4605635A (en) Carbon-containing refractory
JP5777561B2 (en) Brick for stainless steel refining ladle and stainless steel refining ladle
KR20020025878A (en) Carbonaceous Refractory and Method for Preparing the Same
KR100674620B1 (en) Compound for mgo-c brick improving oxidation resistance
JP6215409B1 (en) Mug carbon brick and molten steel pan using this
JPH0352428B2 (en)
JP2014152092A (en) Castable refractory for blast furnace trough
KR960011347B1 (en) Refractory material comprising low-silica electrofused magnesia clinker and product obtained therefrom
KR100689154B1 (en) Refractory materials for mgo-c brick
JP5331077B2 (en) Carbon-containing refractories
KR101350471B1 (en) Refractory composition of sliding nozzle plate for casting special steel
JPH08259340A (en) Magnesia-carbon-based castable refractory
JP2003171170A (en) Magnesia-carbon brick
JP2002362969A (en) Plate brick
JP6767659B2 (en) Slide plate refractory
CN112079629A (en) Anti-oxidation high-strength magnesia carbon brick
KR101066574B1 (en) Castable for ladle
JP3661977B2 (en) Magnesia-carbon slide gate plate
JPH0585805A (en) Carbon-containing fire-resistant material
JPH03295847A (en) Carbon-containing refractory
JP2005139062A (en) Low carbon unfired brick
KR101167157B1 (en) Magnesia-graphite type refractory
JPH09295874A (en) Prepared unshaped refractory containing aluminum oxycarbide
KR100744712B1 (en) Refractory materials for alumina-carbon bricks
JP3124809B2 (en) Refractory brick containing low siliceous magnesia clinker

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130121

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20140120

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20150115

Year of fee payment: 9

FPAY Annual fee payment

Payment date: 20160119

Year of fee payment: 10

FPAY Annual fee payment

Payment date: 20170119

Year of fee payment: 11

FPAY Annual fee payment

Payment date: 20180117

Year of fee payment: 12

LAPS Lapse due to unpaid annual fee