KR890001996B1 - Method for producing repair components - Google Patents
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- KR890001996B1 KR890001996B1 KR1019850005917A KR850005917A KR890001996B1 KR 890001996 B1 KR890001996 B1 KR 890001996B1 KR 1019850005917 A KR1019850005917 A KR 1019850005917A KR 850005917 A KR850005917 A KR 850005917A KR 890001996 B1 KR890001996 B1 KR 890001996B1
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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
- C04B35/01—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
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- Ceramic Engineering (AREA)
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
[발명의 명칭][Name of invention]
용광로용 노상보수재의 제조방법Manufacturing method of hearth repair material for blast furnace
[발명의 상세한 설명]Detailed description of the invention
본 발명은 용광로 로상용 내화 라이닝 보수제의 제조방법에 관한 것으로, 특히 본 발명은 염가의 칼슘과 마그네슘의 탄산염 광물인 도로마이트를 조분쇄하고 이를 300℃정도로 가열하여 조분쇄된 도로마이트중의 산화마그네슘(MgO)의 함량을 적어도 30%이상되는 다공성의 내화재를 얻은 다음, 이에 적어도 조성물 15%인 타르(tar)를 투입하여 70℃정도로 가열, 교반하면서 휘발성용제를 투입하여 상기 산화마그네슘 30%이상 함량의 다공성의 내화제 표면과 다공의 내화제 내부에 타르가 균일하게 피복, 침투된 내화 라이닝 보수제를 염가로 다량 제공할 수 있도록 하는 용광로용 노상 보수제의 제조방법에 관한 것이다.The present invention relates to a method for producing a fire-resistant lining repair agent for furnace furnaces, in particular, the present invention is coarsely pulverized roadite, which is a calcium carbonate mineral of inexpensive calcium and magnesium, and heated to about 300 ° C. After obtaining a porous refractory material having a content of (MgO) of at least 30% or more, and then adding at least 15% of a tar (tar) to a temperature of about 70 ° C., adding a volatile solvent while stirring and heating the content of the magnesium oxide by more than 30% The present invention relates to a method for manufacturing a hearth repair agent for a furnace, which enables to provide a large amount of refractory lining repair agent uniformly coated and infiltrated with tar inside a porous fireproof agent surface and a porous fireproof agent.
일반적으로 용광로의 로상이나 용광로의 선철통은 벽돌에 내화성 물질을 도포하고 가압하여 굳힌다음, 내화물질로 라이닝 시킨 것으로 선철통주부(銑鐵筒周部)의 상반부는 실리카기제의 혼합물로서 라이닝 시키는 한편, 스키이머에 근접한 선철통 주부의 하반부 및 스키머판은 마그네사이트 기재로 라이닝 되어 왔다. 그러나 용광로의 로상이나 선철통은 처리된 선철이나 스러그가 흐르기 때문에 현저하게 부식하게 되고 이 결과 용광로의 로상이나 선철통의 라이닝이 심하게 침식되는 현상을 야기시키게 되며, 이로 이하여 용광로의 로상이나 선철통이 내화 라이닝을 보수하기 위한 내화재를 필요로 하여왔다.In general, the furnace of the furnace or the pig iron tube of the furnace is hardened by applying a refractory material to the brick, pressurizing it, and then lining it with a refractory material. The upper half of the iron tube casting part is lined with a mixture of silica base. The lower half of the pig iron casing close to the skimmer and the skimmer plate have been lined with magnesite substrate. However, the furnace's furnace or pig iron can be corroded remarkably due to the flow of treated pig iron or slugs, resulting in severe erosion of the furnace's furnace or the iron lining of the furnace. Fireproof materials have been needed to repair this fireproof lining.
또한 종래 용광로등에 사용되는 내화라이닝 보수재는 국내에서 전혀 생산되지 않아 수입에만 의존하는 마그네사이트를 주제로하여 조성하고 있으므로서 그 생산비가 고가이고 이에 따라 용광로등의 내화라이닝 보수에 막대한 경비가 소요되게 되는 등의 여러가지 비경제적인 문제점이 대두되고 있었다. 본 발명자는 이와같은 점을 감안하여 국내에서 무진장하게 얻을 수 있는 칼슘과 마그네슘의 탄산염 광물인 도로마이트를 주제로하여 염가의 용광로 로상이나 선철통의 내화라이닝 보수제를 얻을 수 있도록 함으로서 용광로의 로상이나 선철통등의 내화 라이닝 보수를 극히 염가로 수행할 수 있도록 함에 그 목적이 있는 것이다.In addition, the refractory lining repair materials used in the conventional furnaces are not produced at all in Korea, and are produced under the theme of magnesite, which relies solely on imports, and the production cost is high, thus enormous expenses are required for the refractory lining repair of furnaces. Several uneconomical problems have emerged. In view of the above, the present inventors can obtain a low-cost furnace furnace or a fireproof lining repair agent of a pig iron container by using a roadite, which is a calcium carbonate mineral of calcium and magnesium, which can be obtained in Korea indefinitely. The purpose is to make fireproof lining repairs such as iron barrels extremely cheap.
또한 본 발명은 산화마그네슘 함량이 19.4%-21.9%정도의 도로 마이트를 입자상으로 조분쇄하고 300℃정도의 온도로 가열하여 산화마그네슘 함량이 적어도 30% 이상인 다공성의 내화제를 얻은 다음, 이를 70℃정도로 가열된 교반기에 조성물이 15%인 타르를 투입 교반하여 타르가 다공성의 내화제의 표면과 내부에 침투되게하고 이때 휘발성 용제를 투입하여 타르가 분해되어 다공성의 내화제의 내부나 표면에 침투 코팅될때 다공성 내화제 입자상호간에 접착이나 응결을 방지하는 간단한 제조방법으로 용광로의 로상이나 선철통의 내화라이닝 보수제의 제조공정을 극히 간소화하여 제조비등을 크게 절감시킬 수 있음에 그 목적이 있는 것이다. 특히 본 발명은 용광로 로상의 내화벽이나 선철통 하반부 또느 스키이머판등의 내화라이닝 보수제로 사용하게 됨으로서 다공성 내화제는 산화마그네슘(MgO)의 함량이 적어도 30%이상이면 족하고, 또한 산화마그네슘(MgO)함량이 30%인 다공성의 내화제와 조성물 15%인 타르와의 혼합, 교반시 휘발성용제를 투입하여 타르가 분해되어 다공성의 내화제 표면이나 내부에 코팅, 침투되는 타르의 표면을 휘발 건조시켜 줌으로서 타르가 침투 코팅된 내화보수제가 상호 접착되어 응결되는 현상을 배제시켜 줌으로서 내화보수제의 장기보관등이 가능하게 할 수 있도록 한 것으로, 이를 각 공정 및 실시예에 의거 더욱 상세히 설명하면 다음과 같다.In addition, the present invention is coarsely pulverized road mite content of about 19.4% -21.9% of magnesium oxide and heated to a temperature of about 300 ℃ to obtain a porous refractory agent having a magnesium oxide content of at least 30% or more, and then 70 ℃ 15% tar is added to the stirrer heated to the extent of stirring, and the tar is infiltrated into the surface and inside of the porous fireproofing agent. At this time, the tar is decomposed by adding a volatile solvent to penetrate and coat the inside or surface of the porous fireproofing agent. It is a simple manufacturing method to prevent adhesion or condensation between the particles of the porous refractory particles, and the purpose of the present invention is to greatly reduce the manufacturing cost by greatly simplifying the manufacturing process of the refractory lining repair agent of the furnace furnace or the pig iron cylinder. In particular, the present invention is to be used as a refractory lining repair agent such as a fireproof wall in the furnace, a lower half of a pig iron tube or a skimmer plate, so that the porous fireproofing agent is sufficient if the content of magnesium oxide (MgO) is at least 30% or more, and also magnesium oxide (MgO). When mixing and stirring 30% porous refractory and 15% tar, a volatile solvent is added and the tar is decomposed to volatilize and dry the surface of the porous refractory or coated and penetrated. It is possible to make long-term storage of the fire-retardant repair agent by eliminating the phenomenon in which the fire-repellent repair agent coated with tar penetrates by condensation by condensation, which will be described in more detail according to each process and example as follows. same.
제1공정(다공성 내화제 제조공정)First Step (Porosity Refractory Manufacturing Process)
조성비가 산화칼슘(CaO)30-32%, 산화마그네슘 19.5-22%, 산화철(FeO)0.08-1.03%, 이산화탄소(CO2)47%인 도로마이트를 조립자상으로 분쇄하고, 이를 300℃의 온도로 60분간 가열하여 산화마그네슘(MgO)함량이 30%이상인 도로마이트의 다공성 내화제를 생성한다.Dolomite having a composition ratio of 30-32% of calcium oxide (CaO), 19.5-22% of magnesium oxide, 0.08-1.03% of iron oxide (FeO), and 47% of carbon dioxide (CO 2 ) is pulverized into granules, and the temperature is 300 ° C. Furnace for 60 minutes to produce a porous refractory material of doromite having a magnesium oxide (MgO) content of 30% or more.
제2공정(혼합공정)2nd process (mixing process)
상기 제1공정에서 생성 제조한 산화마그네슘(MgO)함량30% 이상인 다공성 내화제를 교반기에 투입하고, 이어서 제1공정에서 생성된 도로마이트의 다공성 내화제 100중량%에 대하여 조성물 15%인 타르를 5중량% 투입 교반하여 70℃정도의 온도로 20-30분간 가열함과 동시에 도로마이트의 다공성 내화제 100중량%에 대하여 휘발성 용제 2.5%를 투입하여 본 발명의 내화라이닝 보수제를 제조한다.Into the agitator, a porous refractory agent having a magnesium oxide (MgO) content of 30% or more, produced in the first step, was added to the stirrer. 5% by weight of agitation is heated for 20-30 minutes at a temperature of about 70 ℃ and at the same time 2.5% of a volatile solvent is added to 100% by weight of the porous refractory agent of roadmite to prepare a refractory lining repair agent of the present invention.
본 공정에서 산화마그네슘 함량 30%인 다공성내화제와 조성물 15%인 타르를70℃정도의 온도로 가열교반하면 용해되어 분해되는 타르성분이 다공성내화제의 중공부(다공부)내부까지 침투함과 동시에 다공성 내화제 표면에 코팅되어 용광로의 로상이나 선철통의 내화라이닝에 살포시 용광로등의 자체열에 의하여 다공성 내화제 내부와 표면에 침투 또는 코팅되었던 타르성분이 용출되어 접착력을 발휘하게 되어 별도의 바인더 없이도 용광로의 로상이나 선철통의 내화벽상에 견고히 내화보수제를 살포시켜 도포할 수 있으며, 산화마그네슘(MgO)30%이상 함량의 다공성 내화제와 조성물 15%인 타르의 교반시 휘발성용제를 투입하면 타르가 용융, 분해되어 다공성 내화제 내부 및 표면에 침투, 코팅될때 표면의 점도를 저하시켜 줌으로서 타르가 침투 코팅된 다공성내화제 입자가 상호접착되는 현상이 방지되어 완벽한 입자상으로 존재하게 됨으로서 제조시는 물론, 포장, 보관시에도 입자상의 내화보수제가 상호 접착되는 현상이 발생하지 않아 장기 저장가능하게 되었으며, 상기 제2공정에서의 산화마그네슘(MgO)30%이상인 다공성 내화제와 조성물 15%인 타르 및 휘발성 용제의 조성비는 다음과 같다.In this process, the tar component, which is dissolved and decomposed by heating and stirring the porous refractory agent having a magnesium oxide content of 30% and the composition 15% tar at a temperature of about 70 ° C, penetrates into the hollow part (porous part) of the porous refractory agent. At the same time, it is coated on the surface of the porous refractory and sprayed on the furnace top of the furnace or the fire lining of the pig iron barrel, and the tar component that has penetrated or coated inside the porous refractory and the surface is eluted by self-heating of the furnace and exerts adhesive force without any binder. It can be applied by spraying a fire retardant firmly on the furnace of the furnace or on the fireproof wall of the pig iron barrel.Targa is added when a volatile solvent is added while stirring the porous refractory with a content of more than 30% of magnesium oxide (MgO) and the tar of 15% of the composition. Tar is penetrated and coated by reducing the viscosity of the surface when it is melted and decomposed and penetrated into and coated with the porous refractory. As the co-fire resistant particles are prevented from inter-adhesion, the particles are present in a perfect particle form, so that the refractory repair agent on the particles does not occur during manufacture as well as during packaging and storage, thereby enabling long-term storage. The composition ratio of the porous refractory agent of magnesium oxide (MgO) 30% or more in the process and the tar and volatile solvent of 15% of the composition is as follows.
(조성비)(Composition ratio)
산화마그네슘(MgO)30%함량의 다공성 내화제 100중량%Magnesium oxide (MgO) 30% by weight 100% by weight of porous refractory
조성물 15%인 타르 5중량%5% by weight of tar, 15% composition
휘발성 용제 2.5중량%Volatile Solvent 2.5 wt%
[실시예]EXAMPLE
상기 제1공정에서 얻은 산화마그네슘(MgO)함량 30%이상인 입자상의 다공성 내화제 80kg에 조성물 15%인 타르 4kg을 교반기에 투입하여 70℃정도의 온도로 가열하면서 20-30분간 교반하고, 교반시 휘발성 요제 2l을 투입하여 내화라이닝 보수제 80kg을 수득하였다. 수득된 내화라이닝 보수제는 모두 양호한 입자상으로 존재하고 있으며, 입자마다의 다공성 내화제 표면과 내부에 타르가 균일하고 완벽하게 침투 고팅되어 있으며, 입자 상호간의 접착현상에 의한 응결이나 취급시 타르의 접찹현상이 나타나지 않아 장기 보관이 가능하였으며, 용광로의 내화라이닝 보수제로 사용시 용광로등의 로상에 균일하게 살포할 수 있어 라이닝면을 고르고 평활하게 보수할 수 있었다.4 kg of tar, 15% of the composition, was added to 80 kg of the particulate porous refractory agent having a magnesium oxide (MgO) content of 30% or more obtained in the first step in a stirrer and stirred for 20-30 minutes while heating to a temperature of about 70 ° C. 2 l of volatile urine was added to obtain 80 kg of a fireproof lining repair agent. All of the fireproof lining repair agents obtained were in good particle form, and the tar was uniformly and completely penetrated and coated on the inside and inside of the porous fireproofing agent for each particle, and the tar phenomenon during condensation or handling due to adhesion between particles was observed. Since it did not appear, long-term storage was possible, and when used as a refractory lining repair agent of the furnace, it could be uniformly sprayed on furnaces such as furnaces, so that the lining surface could be evenly and smoothly repaired.
[비교실시예]Comparative Example
상기 실시예와 같은 상태로하되 다만 휘발성용제외 투입을 생략한다.The same state as in the above embodiment is omitted except for the addition of volatile solvent.
이결과 입자 상호간에 접착 현상이 나타나 입자가 뭉처지고 응결되는 현상이 나타나고 타르의 용출현상이 나타나 장기 보관이 불가능하였을 뿐만 아니라, 내화라이닝 보수시 라이닝면이 조잡해지는 결과를 나타냈다.As a result, the adhesion phenomenon between the particles appeared, the particles were aggregated and condensed, and the dissolution of tar appeared, which prevented the long-term storage, and resulted in a poor lining surface during the refractory lining repair.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019850005917A KR890001996B1 (en) | 1985-08-16 | 1985-08-16 | Method for producing repair components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019850005917A KR890001996B1 (en) | 1985-08-16 | 1985-08-16 | Method for producing repair components |
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| Publication Number | Publication Date |
|---|---|
| KR870002037A KR870002037A (en) | 1987-03-28 |
| KR890001996B1 true KR890001996B1 (en) | 1989-06-07 |
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| KR1019850005917A KR890001996B1 (en) | 1985-08-16 | 1985-08-16 | Method for producing repair components |
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| KR (1) | KR890001996B1 (en) |
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1985
- 1985-08-16 KR KR1019850005917A patent/KR890001996B1/en not_active IP Right Cessation
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| KR870002037A (en) | 1987-03-28 |
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