JP4398938B2 - Refractory evaluation method - Google Patents

Refractory evaluation method Download PDF

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JP4398938B2
JP4398938B2 JP2005353767A JP2005353767A JP4398938B2 JP 4398938 B2 JP4398938 B2 JP 4398938B2 JP 2005353767 A JP2005353767 A JP 2005353767A JP 2005353767 A JP2005353767 A JP 2005353767A JP 4398938 B2 JP4398938 B2 JP 4398938B2
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hot metal
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JP2007155607A (en
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法生 新田
啓之 石井
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Nippon Steel Corp
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Description

本発明は、耐火物の評価方法に関する。例えば、溶銑と接する耐火物の損耗特性を実験室レベルで評価する方法に関する。   The present invention relates to a refractory evaluation method. For example, the present invention relates to a method for evaluating the wear characteristics of a refractory in contact with hot metal at a laboratory level.

溶銑、溶鋼等の溶融金属や溶融スラグなどに接する場所に用いられる耐火物は、酸化、浸食、溶解等によって不可避的に損耗が生じる。したがって、こうした耐火物については、損耗量に着目した特性評価が必要であり、特許文献１には耐火物の試験方法が開示されている（図５参照）。
特許文献１に開示の耐火物試験方法では、まず、耐火物試験材２０を中空の環状に形成し、この耐火物試験材２０をるつぼ１０の内側に配置する。耐火物試験材２０の内側に溶銑または溶銑スラグ３０を流し込む。さらに、るつぼ１０と耐火物試験材２０との間４０に冷却ガス（窒素ガス）を流通させて耐火物試験材２０に温度勾配をつける。高周波誘導による溶解炉（不図示）中にるつぼ１０をセットし、るつぼ１０を昇温させる。
この状態で所定時間経過した後、耐火物試験材２０の損耗量を確認する。 Refractories used in places that come into contact with molten metal such as hot metal and molten steel, molten slag, etc. inevitably wear out due to oxidation, erosion, melting, and the like. Therefore, for such a refractory, it is necessary to perform characteristic evaluation focusing on the amount of wear, and Patent Document 1 discloses a refractory test method (see FIG. 5).
In the refractory test method disclosed in Patent Document 1, first, the refractory test material 20 is formed in a hollow ring shape, and the refractory test material 20 is disposed inside the crucible 10. Hot metal or hot metal slag 30 is poured into the refractory test material 20. Further, a cooling gas (nitrogen gas) is circulated between the crucible 10 and the refractory test material 20 to give a temperature gradient to the refractory test material 20. The crucible 10 is set in a melting furnace (not shown) by high frequency induction, and the temperature of the crucible 10 is raised.
After a predetermined time has passed in this state, the amount of wear of the refractory test material 20 is confirmed.

特開２０００−３９４１２号公報JP 2000-39412 A

高炉の炉底において使用される耐火物には所定の圧力がかかった状態となる。この点、特許文献１に記載の耐火物の試験方法では溶銑に圧力を付加することが考慮されていない。
また、特許文献１に開示される構成では、環状の耐火物試験材２０に注入された溶銑スラグ３０に加圧しても耐火物試験材２０の全体に均等に加圧できず、実際に耐火物が使用される状況と実験条件は全く異なったものとなってしまう。さらに、特許文献１のごとく、耐火物を中空の円環状に加工した耐火物試験材２０を用いる場合、耐火物を加工する段階で亀裂等の損傷が発生しやすい。すると、このような亀裂から溶銑が耐火物試験材２０に浸透してしまうので、耐火物そのものの損耗特性を正確に評価することができない。 A predetermined pressure is applied to the refractory used at the bottom of the blast furnace. In this regard, the refractory test method described in Patent Document 1 does not consider applying pressure to the hot metal.
Moreover, in the structure disclosed by patent document 1, even if it pressurizes the hot metal slag 30 inject | poured into the cyclic | annular refractory test material 20, it cannot pressurize equally to the whole refractory test material 20, but actually refractory. The situation in which the is used and the experimental conditions are completely different. Furthermore, as in Patent Document 1, when the refractory test material 20 obtained by processing a refractory into a hollow annular shape is used, damage such as cracks is likely to occur at the stage of processing the refractory. Then, since hot metal penetrates into the refractory test material 20 from such a crack, the wear characteristics of the refractory itself cannot be accurately evaluated.

本発明の目的は、耐火物の実際の使用状況に模した条件で耐火物の特性を正確に評価できる耐火物の評価方法を提供することにある。   An object of the present invention is to provide a method for evaluating a refractory that can accurately evaluate the characteristics of the refractory under conditions that mimic the actual use of the refractory.

本発明の耐火物評価方法は、耐火物への溶銑浸透度を評価する耐火物評価方法であって、曲げ強さが１５ＭＰａ以上かつ弾性率が１０ＧＰａ以下である素材からなる容器内に収納可能な大きさに評価対象となる耐火物を加工して円柱状に耐火物試験体を形成する試験体形成工程と、前記試験体形成工程にて形成された耐火物試験体を接着剤にて前記容器の底面に接着する試験体接着工程と、前記容器内に溶銑を投入する溶銑投入工程と、前記容器内の前記溶銑に加圧する加圧工程と、前記容器を加熱する加熱工程と、前記加圧および加熱の状態を所定時間継続する維持工程と、前記耐火物試験体を取り出してこの耐火物試験体へのＦｅ成分の浸透深さを測定することにより溶銑浸透度を確認する評価工程と、からなることを特徴とする。 The refractory evaluation method of the present invention is a refractory evaluation method for evaluating the hot metal penetration degree to a refractory, and can be stored in a container made of a material having a bending strength of 15 MPa or more and an elastic modulus of 10 GPa or less. A test body forming step of processing a refractory to be evaluated into a size to form a refractory test body in a cylindrical shape, and the refractory test body formed in the test body forming step with the adhesive A test body adhesion step for adhering to the bottom surface of the metal, a hot metal charging step for pouring hot metal into the container, a pressurizing step for pressurizing the hot metal in the container, a heating step for heating the container, and the pressurization and the state of heating and process maintain continuing predetermined time from the evaluation step of confirming hot metal penetration by measuring the penetration depth of the Fe component to the refractory specimen was taken out the refractory specimen It is characterized by becoming .

このような構成において、まず、試験体形成工程において耐火物を所定の大きさに加工する。このとき、試験体が容器内に収納可能であればよいので、試験体の形状は単純な円柱や角柱でよい。そして、試験体接着工程において、試験体を容器の底面に接着し、さらに、容器内に溶銑を投入する。
このとき、耐火物の比重は溶銑よりも圧倒的に小さいが、試験体は容器の底面に接着されているので、試験体が浮かび上がってきたりすることなく試験体が溶銑中に没入した状態が保たれる。さらに、容器内の溶銑に加圧する。
このとき、容器は、曲げ強さが１５ＭＰａ以上かつ弾性率が１０ＧＰａ以下である素材であり、靱性および柔軟性を備えているので、加圧しても容器に亀裂が入るような不都合が生じることはない。そして、所定時間経過したのち、冷却して耐火物試験体を取り出し、試験体への溶銑侵入度を評価する。
たとえば、所定時間溶銑中に没入させた試験体のサンプルを切断し、Ｘ線撮影によるＦｅ成分の浸透深さを測定することにより、溶銑の浸透度合いを評価することができる。 In such a configuration, first, the refractory is processed into a predetermined size in the test body forming step. At this time, as long as the test body can be stored in the container, the shape of the test body may be a simple cylinder or prism. In the test body bonding step, the test body is bonded to the bottom surface of the container, and the hot metal is put into the container.
At this time, the specific gravity of the refractory is overwhelmingly smaller than that of the hot metal, but since the test specimen is bonded to the bottom of the container, the test specimen is immersed in the hot metal without rising up. Kept. Further, the hot metal in the container is pressurized.
At this time, the container is a material having a bending strength of 15 MPa or more and an elastic modulus of 10 GPa or less, and is provided with toughness and flexibility. Absent. And after predetermined time passes, it cools, a refractory test body is taken out, and the hot metal penetration | invasion degree to a test body is evaluated.
For example, the degree of penetration of the hot metal can be evaluated by cutting a sample of the test specimen immersed in the hot metal for a predetermined time and measuring the penetration depth of the Fe component by X-ray photography.

このような構成によれば、耐火物を試験体として加工する際に単純な形状とすることができるので、試験体を形成する際に亀裂等が生じるおそれを排除することができる。
従って、亀裂等から溶銑が浸透することがなく、耐火物そのものの溶銑浸透度を適切に評価することができる。また、試験体を接着材によって容器の底面に貼り付けているので、試験体が溶銑中に没入した状態を保つことができる。そして、試験体が溶銑に没入した状態で溶銑に加圧することで、試験体に均等に圧力がかかる。よって、試験体の総ての表面から均質に溶銑の浸透が起こるので、局所的な圧力の高低差に起因する浸透度の違いが生じることがなく、試験体の評価を適切かつ正確に行うことができる。そして、従来と異なり、試験体で容器を形成するわけではないから、容器を圧力に耐えられる強い素材で形成することができる。その結果、十分に加圧でき、高炉の炉底など耐火物の使用状態を再現することができ、耐火物の正確な評価を行うことができる。 According to such a structure, since it can be made into a simple shape when processing a refractory as a test body, the possibility that a crack etc. may arise when forming a test body can be excluded.
Therefore, the hot metal does not penetrate from cracks or the like, and the hot metal penetration degree of the refractory itself can be appropriately evaluated. Moreover, since the test body is affixed on the bottom surface of the container with an adhesive, the state in which the test body is immersed in the hot metal can be maintained. And a pressure is equally applied to a test body by pressurizing the hot metal in a state where the test body is immersed in the hot metal. Therefore, since the molten metal permeates uniformly from all surfaces of the specimen, there is no difference in the degree of penetration due to local pressure difference, and the specimen is evaluated appropriately and accurately. Can do. And unlike the past, since a container is not formed with a test body, a container can be formed with a strong material that can withstand pressure. As a result, it is possible to sufficiently pressurize, reproduce the use state of the refractory such as the bottom of the blast furnace, and perform accurate evaluation of the refractory.

なお、接着材としては、アルミナ微粉を水ガラスで溶いたものを使用することができる。例えば、アロンセラ（登録商標）を使用することができる。   In addition, as an adhesive material, what melt | dissolved the alumina fine powder with water glass can be used. For example, Aroncera (registered trademark) can be used.

また、容器の曲げ強さの上限は特に定めるものではないが、通常使用される素材では３０ＭＰａを超えるものがないので、上限は３０ＭＰａ程度が例示される。弾性率の下限値は１ＧＰａ未満になると容器が変形しやすくなるので、１ＧＰａ以上とすることが好ましい。   Moreover, although the upper limit of the bending strength of a container is not specifically defined, since there is no material exceeding 30 MPa in the normally used material, the upper limit is exemplified by about 30 MPa. If the lower limit of the elastic modulus is less than 1 GPa, the container is likely to be deformed.

本発明では、前記容器は、カーボン素材にて形成されていることが好ましい。   In the present invention, the container is preferably made of a carbon material.

このような構成において、容器をカーボン素材とすることにより、対溶銑性、靱性、柔軟性を備えた容器を得ることができ、本発明の耐火物評価方法に好適な容器を得ることができる。   In such a configuration, by using a carbon material as the container, a container having hot metal resistance, toughness, and flexibility can be obtained, and a container suitable for the refractory evaluation method of the present invention can be obtained.

なお、骨材と結合材とのそれぞれの弾性率としては、骨材の弾性率を１０ＧＰａ以上とし、結合材の弾性率を骨材の弾性率の１０分の１（すなわち１ＧＰａ以上）程度とすることが例として挙げられる。
結合材としては、微粉のカーボン、ＳｉO２、ＳｉＣなどが例として挙げられる。 The elastic modulus of each of the aggregate and the binder is such that the elastic modulus of the aggregate is 10 GPa or more, and the elastic modulus of the binder is about 1/10 of the elastic modulus of the aggregate (that is, 1 GPa or more). As an example.
Examples of the binder include fine powder carbon, SiO 2 and SiC.

本発明では、前記耐火物は、骨材の弾性率と結合材との弾性率が異なる材料から構成されていることが好ましい。   In this invention, it is preferable that the said refractory is comprised from the material from which the elasticity modulus of an aggregate differs from the elasticity modulus of a binder.

このような構成において、骨材と結合材の弾性率が異なる材料は加工が困難であるが、本発明では、耐火物を単純な形状に切り出せばよいので、加工時に試験体に亀裂等が生じる恐れがない。
近年では、耐火物として、アルミナ−シリカ系や、アルミナ−カーボン−ＳｉＣ系などが使用されてきているところ、これらは硬質で粗粒の骨材を含有しており、容器の形状に加工することは非常に困難であった。
この点、本発明では、耐火物を単純な形状に切り出すだけでよいので、耐火物に粗粒が含まれていても簡便に試験体の形状に加工することができ、正確に耐火物の溶銑浸透度を評価することができる。 In such a configuration, materials having different elastic moduli of the aggregate and the binder are difficult to process, but in the present invention, it is only necessary to cut out the refractory into a simple shape. There is no fear.
In recent years, alumina-silica, alumina-carbon-SiC, etc. have been used as refractories, and these contain hard and coarse aggregates that can be processed into container shapes. Was very difficult.
In this respect, in the present invention, since the refractory only needs to be cut into a simple shape, even if coarse particles are included in the refractory, it can be easily processed into the shape of the specimen, and the molten metal of the refractory can be accurately obtained. The degree of penetration can be evaluated.

本発明によれば、耐火物を試験体として加工する際に単純な形状とすることができるので、試験体を形成する際に亀裂等が生じるおそれを排除することができ、亀裂等から溶銑が浸透することがなく、耐火物そのものの溶銑浸透度を適切に評価することができる。   According to the present invention, when processing a refractory as a test body, it can be made into a simple shape, so that it is possible to eliminate the possibility of cracks or the like when forming the test body, and the hot metal from cracks or the like. Without penetration, it is possible to appropriately evaluate the hot metal penetration of the refractory itself.

以下、本発明の実施の形態を図示するとともに図中の各要素に付した符号を参照して説明する。
本発明の耐火物評価方法にかかる実施形態について説明する。
図１は、この耐火物評価方法に使用される耐火物評価装置１００の全体図である。
耐火物評価装置１００は、内側に試験体５００と溶銑６００とを収容可能な容器２００と、この容器２００の外側から加熱する加熱手段３００と、容器２００内の溶銑６００に加圧する加圧手段４００と、を備えている。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be illustrated and described with reference to reference numerals attached to respective elements in the drawings.
The embodiment concerning the refractory evaluation method of the present invention is described.
FIG. 1 is an overall view of a refractory evaluation apparatus 100 used in this refractory evaluation method.
The refractory evaluation apparatus 100 includes a container 200 that can accommodate the test body 500 and the molten iron 600 inside, a heating means 300 that heats from the outside of the container 200, and a pressurizing means 400 that pressurizes the molten metal 600 in the container 200. And.

図２は、容器２００の拡大図であり、図３は、容器２００内に試験体５００を接着する様子を示す斜視図である。
容器２００は、カーボン素材で形成されており、曲げ強さが１５ＭＰａ以上かつ弾性率が１０ＧＰａ以下である。
なお、容器２００の開口部２２０は、段差をもって拡径する形状である。
容器２００内には、耐火物を円柱形状に切り出した試験体５００が収納され、さらに、試験体５００はアルミナシリカ系の接着材によって容器２００の底面２１０に接着されている。そして、試験体５００が底面２１０に接着された状態で容器２００内に溶銑６００が投入されている。 FIG. 2 is an enlarged view of the container 200, and FIG. 3 is a perspective view showing a state in which the test body 500 is adhered in the container 200.
The container 200 is made of a carbon material, has a bending strength of 15 MPa or more and an elastic modulus of 10 GPa or less.
In addition, the opening part 220 of the container 200 is a shape which expands with a level | step difference.
A test body 500 obtained by cutting a refractory into a cylindrical shape is housed in the container 200, and the test body 500 is further bonded to the bottom surface 210 of the container 200 with an alumina silica-based adhesive. The hot metal 600 is put into the container 200 with the test body 500 adhered to the bottom surface 210.

加熱手段３００は、容器の周囲を囲んで配設された誘導コイル３１０を備え、高周波電流の印加により容器２００を外側から加熱する。   The heating means 300 includes an induction coil 310 disposed around the container, and heats the container 200 from the outside by applying a high-frequency current.

加圧手段４００は、アルゴン等の不活性ガスを容器２００内に注入するノズル４１０を備えている。このノズル４１０の下端４２０が容器２００の開口部２２０を閉塞している。
なお、ノズル４１０は、下方に向けて押圧されており、容器２００を密閉状態とする。そして、ノズル４１０からガスが容器内に注入されることにより、溶銑６００に圧力が加えられる。 The pressurizing unit 400 includes a nozzle 410 that injects an inert gas such as argon into the container 200. The lower end 420 of the nozzle 410 closes the opening 220 of the container 200.
Note that the nozzle 410 is pressed downward, and the container 200 is sealed. Then, pressure is applied to the hot metal 600 by injecting gas from the nozzle 410 into the container.

このような構成を備える耐火物試験装置１００によって耐火物を評価する耐火物評価方法の手順について説明する。
まず、容器２００内に収納可能な大きさに評価対象となる耐火物を加工して耐火物試験体５００を形成する（試験体形成工程）。そして、耐火物試験体５００をシリカアルミナ系接着剤７００により容器２００の底面２１０に接着する（試験体接着工程、図３参照）。続いて、容器２００内に溶銑６００を投入する（溶銑投入工程）ノズル４１０によって容器２００を密閉し、ノズル４１０から容器２００内にアルゴン等の不活性ガスを注入して容器２００内の溶銑６００に加圧する（加圧工程）。同時に、加熱手段３００の誘導コイル３１０に高周波電流を印加して、容器２００を外側から加熱する。
この状態を所定時間継続する。すると、例えば、図４に示されるように、耐火物試験体５００に溶銑が浸透（５０１）する。
ここで、実験条件としては、０．５ＭＰａ、１５００℃とし、継続時間を４時間とすることが例として挙げられる。
時間経過後、耐火物試験体５００を取り出してこの耐火物試験体５００への溶銑浸透度を確認する（評価工程）。例えば、耐火物試験体５００を切断して、Ｘ線撮影によりＦｅ成分の浸透度を観察する。Ｆｅ成分が浸透している部分についてはＸ線撮影したときに白くなるので、Ｘ線撮影像に基づいて溶銑の浸透深さを相対的に評価できる。 A procedure of a refractory evaluation method for evaluating a refractory using the refractory test apparatus 100 having such a configuration will be described.
First, the refractory to be evaluated is processed into a size that can be stored in the container 200 to form the refractory test body 500 (test body forming step). And the refractory test body 500 is adhere | attached on the bottom face 210 of the container 200 with the silica alumina type adhesive agent 700 (refer to a test body adhesion process, FIG. 3). Subsequently, the hot metal 600 is put into the container 200 (hot metal pouring step). The container 200 is sealed by the nozzle 410, and an inert gas such as argon is injected into the container 200 from the nozzle 410 to the hot metal 600 in the container 200. Pressurize (pressurization process). At the same time, a high frequency current is applied to the induction coil 310 of the heating means 300 to heat the container 200 from the outside.
This state is continued for a predetermined time. Then, for example, as shown in FIG. 4, the hot metal penetrates (501) into the refractory test body 500.
Here, as an experimental condition, 0.5 MPa, 1500 ° C., and a duration of 4 hours are exemplified.
After the elapse of time, the refractory specimen 500 is taken out and the hot metal penetration degree into the refractory specimen 500 is confirmed (evaluation process). For example, the refractory test body 500 is cut and the penetration degree of the Fe component is observed by X-ray photography. Since the portion where the Fe component has permeated becomes white when X-ray imaging is performed, the penetration depth of the hot metal can be relatively evaluated based on the X-ray imaging image.

このような構成を備える第１実施形態によれば、次の効果を奏することができる。
（１）耐火物を試験体５００として加工する際に単純な円柱状とするので、試験体を形成する際に亀裂等が生じるおそれを排除することができる。従って、亀裂等から溶銑６００が浸透することがなく、耐火物そのものの溶銑浸透度を適切に評価することができる。 According to 1st Embodiment provided with such a structure, there can exist the following effects.
(1) Since the refractory is processed into a simple cylindrical shape when processed as the test body 500, it is possible to eliminate the possibility that cracks or the like are generated when the test body is formed. Therefore, the hot metal 600 does not penetrate from cracks and the like, and the hot metal penetration degree of the refractory itself can be appropriately evaluated.

（２）耐火物は溶銑６００よりも比重が小さいが、接着剤７００によって容器２００の底面２１０に貼り付けているので、試験体５００を溶銑６００中に没入した状態を保つことができ、溶銑６００に加圧することで、試験体５００に均等に圧力をかけることができる。試験体５００の総ての表面から均質に溶銑６００の浸透が起こり、局所的な圧力の高低差に起因する浸透度の違いが生じることがなく、試験体５００の評価を適切かつ正確に行うことができる。 (2) Although the specific gravity of the refractory is smaller than that of the hot metal 600, the refractory is stuck to the bottom surface 210 of the container 200 with the adhesive 700, so that the test body 500 can be kept immersed in the hot metal 600. The pressure can be applied evenly to the test body 500. The molten metal 600 permeates uniformly from all surfaces of the test body 500, and the evaluation of the test body 500 is performed appropriately and accurately without any difference in the degree of penetration caused by the difference in local pressure. Can do.

（３）本実施形態では、試験体５００で容器２００を形成するわけではないので、容器２００を圧力に耐えられるカーボン素材で形成することができる。
その結果、十分に加圧でき、高炉の炉底など耐火物の使用状態を再現することができ、耐火物の正確な評価を行うことができる。 (3) In this embodiment, since the container 200 is not formed with the test body 500, the container 200 can be formed of a carbon material that can withstand pressure.
As a result, it is possible to sufficiently pressurize, reproduce the use state of the refractory such as the bottom of the blast furnace, and perform accurate evaluation of the refractory.

なお、本発明は前述の実施形態に限定されず、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれる。
試験体とする耐火物の成分や粒度については特に限定されるものではない。
容器は、カーボン素材を例にして説明したが、カーボンに限らず、対溶銑性、靱性、柔軟性などを備えた適切な素材を適宜選択すればよい。
評価装置の構成は上記実施形態に限定されるものではなく、本発明の評価方法を実施できればよいことはもちろんである。 It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
It does not specifically limit about the component and particle size of the refractory material used as a test body.
The container has been described by taking a carbon material as an example, but is not limited to carbon, and an appropriate material having hot metal resistance, toughness, flexibility, and the like may be appropriately selected.
The configuration of the evaluation apparatus is not limited to the above embodiment, and it is needless to say that the evaluation method of the present invention can be implemented.

本発明は、耐火物の評価方法に利用できる。   The present invention can be used for a refractory evaluation method.

耐火物評価方法に使用される耐火物評価装置の全体図。The whole figure of the refractory evaluation apparatus used for a refractory evaluation method. 容器の拡大図。Enlarged view of the container. 容器内に試験体を接着する様子を示す斜視図。The perspective view which shows a mode that a test body is adhere | attached in a container. 試験体に溶銑が浸透した状態を示す図。The figure which shows the state which the hot metal osmose | permeated the test body. 従来の耐火物試験方法を説明する図。The figure explaining the conventional refractory test method.

符号の説明Explanation of symbols

２０…耐火物試験材、３０…溶銑スラグ、１００…耐火物評価装置、２００…容器、２１０…底面、２２０…開口部、３００…加熱手段、３１０…誘導コイル、４００…加圧手段、４１０…ノズル、５００…試験体、５０１…試験体に浸透した溶銑、６００…溶銑、７００…接着剤。
20 ... Refractory test material, 30 ... Hot metal slag, 100 ... Refractory evaluation apparatus, 200 ... Container, 210 ... Bottom, 220 ... Opening, 300 ... Heating means, 310 ... Induction coil, 400 ... Pressurizing means, 410 ... Nozzle, 500... Specimen, 501. Molten metal permeating into the specimen, 600.

Claims (3)

耐火物への溶銑浸透度を評価する耐火物評価方法であって、
曲げ強さが１５ＭＰａ以上かつ弾性率が１０ＧＰａ以下である素材からなる容器内に収納可能な大きさに評価対象となる耐火物を加工して円柱状に耐火物試験体を形成する試験体形成工程と、
前記試験体形成工程にて形成された耐火物試験体を接着剤にて前記容器の底面に接着する試験体接着工程と、
前記容器内に溶銑を投入する溶銑投入工程と、
前記容器内の前記溶銑に加圧する加圧工程と、
前記容器を加熱する加熱工程と、
前記加圧および加熱の状態を所定時間継続する維持工程と、
前記耐火物試験体を取り出してこの耐火物試験体へのＦｅ成分の浸透深さを測定することにより溶銑浸透度を確認する評価工程と、からなる
ことを特徴とする耐火物評価方法。 A refractory evaluation method for evaluating hot metal penetration into a refractory,
Specimen forming step of forming a refractory specimen in a cylindrical shape by processing a refractory to be evaluated into a size that can be stored in a container made of a material having a bending strength of 15 MPa or more and an elastic modulus of 10 GPa or less. When,
A test body bonding step of bonding the refractory test body formed in the test body forming step to the bottom surface of the container with an adhesive;
Hot metal charging step of charging hot metal into the container;
A pressurizing step of pressurizing the hot metal in the container;
A heating step of heating the container;
Maintaining the pressure and heating for a predetermined time; and
A refractory evaluation method comprising: an evaluation step of taking out the refractory specimen and measuring the penetration depth of the Fe component into the refractory specimen to confirm the hot metal penetration. 請求項１に記載の耐火物評価方法において、
前記容器は、カーボン素材にて形成されている
ことを特徴とする耐火物評価方法。 In the refractory evaluation method according to claim 1,
The said container is formed with the carbon material. The refractory evaluation method characterized by the above-mentioned. 請求項１または請求項２に記載の耐火物評価方法において、
前記耐火物は、骨材の弾性率と結合材との弾性率が異なる材料から構成されている
ことを特徴とする耐火物評価方法。 In the refractory evaluation method according to claim 1 or 2,
The said refractory is comprised from the material from which the elasticity modulus of an aggregate differs from the elasticity modulus of a binder. The refractory evaluation method characterized by the above-mentioned.
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KR101430098B1 (en) * 2013-02-28 2014-08-14 한국산업기술대학교산학협력단 Apparatus and method for evaluating characteristics of refractory
JP2018113119A (en) * 2017-01-10 2018-07-19 住友電装株式会社 Shield connector and manufacturing method of shield connector

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101430098B1 (en) * 2013-02-28 2014-08-14 한국산업기술대학교산학협력단 Apparatus and method for evaluating characteristics of refractory
JP2018113119A (en) * 2017-01-10 2018-07-19 住友電装株式会社 Shield connector and manufacturing method of shield connector

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