WO2013161721A1 - Récipient pour acier liquide - Google Patents

Récipient pour acier liquide Download PDF

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Publication number
WO2013161721A1
WO2013161721A1 PCT/JP2013/061669 JP2013061669W WO2013161721A1 WO 2013161721 A1 WO2013161721 A1 WO 2013161721A1 JP 2013061669 W JP2013061669 W JP 2013061669W WO 2013161721 A1 WO2013161721 A1 WO 2013161721A1
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WO
WIPO (PCT)
Prior art keywords
molten steel
refractory
slag
steel container
mass
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PCT/JP2013/061669
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English (en)
Japanese (ja)
Inventor
井上　明彦
清田　禎公
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Ｊｆｅスチール株式会社
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 Ｊｆｅスチール株式会社 filed Critical Ｊｆｅスチール株式会社
Priority to IN2370KON2014 priority Critical patent/IN2014KN02370A/en
Priority to CN201380021929.6A priority patent/CN104245190B/zh
Priority to KR1020147029580A priority patent/KR101631400B1/ko
Priority to JP2014512533A priority patent/JP5800087B2/ja
Publication of WO2013161721A1 publication Critical patent/WO2013161721A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics

Definitions

  • the present invention relates to a molten steel container.
  • Patent Document 1 as a refractory lining structure for a container for holding hot metal, “from the outside, an iron skin, a permanent refractory layer, a workpiece refractory layer” are provided in order ([Claim 1]). A structure in which a heat insulating material is disposed between the iron skin and the permanent refractory layer is disclosed ([Claim 6]). Specifically, Patent Document 1 discloses “Al 2 O 3 —SiC—C-based material” ([0038], [0060] to [0064]) as a work refractory layer, Is 10 mass% or less "([Claim 5], [0060]) Only an example in which a molded brick is applied is disclosed.
  • molten steel container for holding molten steel is required to have higher corrosion resistance and heat insulation than a container for holding molten iron.
  • Patent Document 1 The inventors have found that when the refractory lining structure disclosed in Patent Document 1 is applied to a molten steel container, sufficient corrosion resistance and heat insulation cannot be obtained.
  • the present invention has been made in view of the above points, and an object thereof is to provide a molten steel container excellent in both corrosion resistance and heat insulation.
  • the present inventors have used a specific shaped refractory as a work refractory in a predetermined part in a refractory lining structure of a molten steel container provided with a heat insulating material.
  • the present inventors have found that both excellent corrosion resistance and heat insulation can be achieved. That is, the present invention provides the following (1) to (3).
  • a molten steel container for holding molten steel having a carbon content of 2% by mass or less, wherein the molten steel container has an iron skin, a permanent refractory layer, and a workpiece refractory layer in order from the outside.
  • a work refractory layer wherein the work refractory layer is divided into a steel bath portion in contact with the molten steel and a slag line portion in contact with the slag on the molten steel, and the steel bath portion further includes a bottom portion of the molten steel container.
  • Laid on the side of the molten steel container and a side wall connected to the laid slag and the slag line part, and at least the side of the side wall of the iron skin side has a thermal conductivity.
  • a heat insulating material having a thickness of 1 mm or more with a thickness of 0.1 W / (m ⁇ K) or less is applied, and the workpiece refractory constituting the side wall portion contains at least magnesium oxide without containing silicon carbide, Carbon content of 1.5-11 % Of a monolithic refractories, molten steel container.
  • the construction position of the heat insulating material is between the iron skin and the permanent refractory layer, or between the two permanent refractory layers provided (1) or (2) The molten steel container described in 1.
  • FIG. 1 is a cross-sectional view schematically showing an example of a molten steel container 1.
  • the molten steel container 1 is also called a molten steel pan, for example, and holds the molten steel 61.
  • the molten steel 61 is converted by decarburization of the hot metal in a converter (not shown), and has a carbon content of 2% by mass or less.
  • the carbon concentration of general steel is about 0.002 to 0.3% by mass, and it is preferably applied to a molten steel container of such steel.
  • a secondary refining process is performed in which impurities are removed from the molten steel 61 and additional elements are added.
  • Main secondary refining includes RH (Ruhrstahl-Heraeus), LF (Ladle Furnace), VOD (Vacuum Oxygen Decarburization) and the like.
  • the molten steel 61 that has undergone secondary refining is transported by the molten steel container 1 and subjected to a continuous casting process.
  • the molten steel container 1 shown in FIG. 1 is in a state of holding a molten steel 61 received from a converter, and a slag 62 floats on the molten metal surface of the molten steel 61.
  • the refractory lining structure provided in the molten steel container 1 basically has an iron skin 2, a permanent refractory layer 3, and a workpiece refractory layer 4 in order from the outside.
  • the iron skin 2 is a steel structure that supports a refractory as the outermost layer of the molten steel container 1.
  • the permanent refractory layer 3 is a brick layer that is constructed to ensure safety so that the molten steel 61 does not leak even when (a part of) the workpiece refractory layer 4 described later is damaged and dropped off. It may be called and two layers may be provided.
  • a regular refractory (molded brick) or an irregular refractory is used as the refractory constituting the permanent refractory layer 3 (also referred to as “permanent refractory”). Specifically, for example, a wax stone brick is used. It is done.
  • the workpiece refractory layer 4 is a refractory layer that is in direct contact with the molten steel 61 and is a layer that forms a contact surface (working surface) with the molten steel 61 and the slag 62.
  • a refractory constituting the workpiece refractory layer 4 also referred to as “work refractory”
  • a regular refractory (molded brick) or an irregular refractory is used as regular refractory (molded brick) or an irregular refractory.
  • the workpiece refractory layer 4 is mainly divided into a steel bath portion 41 that contacts the molten steel 61 held in the molten steel container 1 and a slag line portion 42 that contacts the slag 62.
  • the slag line part 42 is a part which contacts the slag 62, it does not exactly coincide with the position of the slag 62. That is, the lower limit of the slag line portion 42 is lower than the lower surface position of the slag 62 by about 1/10 of the total height of the molten steel container 1. This is such that the slag 62 is always in contact with the slag line portion 42 even when the height position of the slag 62 is changed during the intensive process of secondary refining such as LF and VOD.
  • the steel bath portion 41 further includes a floor portion 411 disposed at the bottom of the molten steel container 1, and a side wall portion 412 disposed on the side portion of the molten steel container 1 and connected to the floor portion 411 and the slag line portion 42. It is divided into.
  • the portion in contact with the molten steel 61 and the slag 62 may fluctuate during receiving steel and during outgoing steel, but the “steel bath portion 41” and “slag” here
  • the “line part 42” is a concept in a state in which the receiving of steel from the converter or the like is finished and the molten steel 61 is held (including a state during conveyance and a state in which various processes such as secondary refining are performed). And the concept under normal operating conditions.
  • the workpiece refractory constituting such a workpiece refractory layer 4 at least the workpiece refractory constituting the slag line portion 42, the workpiece refractory constituting the side wall portion 412 of the steel bath portion 41, and the steel bath portion. It is divided into three types of work refractories constituting the laying part 411 of 41, and these are different from each other. Details of the workpiece refractory layer 4 (work refractory) will be described later.
  • the heat insulating material 5 is a material that exhibits a heat insulating function, and examples of the material include SiO 2 and Al 2 O 3 .
  • the heat insulating material 5 it is preferable to use a material having a compressive strength higher than the static iron pressure.
  • a heat insulating material to which silicon carbide (SiC), titanium oxide or the like is added may be used, and a fiber (fiber). It is also possible to use a heat insulating material in which strength is ensured by mixing them.
  • the construction position of the heat insulating material 5 can operate the heat insulating material 5 at a low temperature and can exhibit the heat insulating performance for a long period (for example, two years or more). Between 3 is preferred.
  • two layers of permanent refractory layers 3 it may be constructed between the two layers, but deterioration such as shrinkage may be observed even when the temperature of the heat insulating material 5 is lower than the heat resistant temperature. is there. In this case as well, heat insulation performance is generally demonstrated for about one year, but the degree of deterioration differs depending on the operating temperature and operating time, so the first and second inspections that are performed about 1 to 2 years after the start of use are planned. It is preferable to disassemble the permanent refractory layer 3 and grasp the deterioration behavior of the heat insulating material 5.
  • the heat insulating material 5 is applied to at least the side of the side wall 412 on the iron skin 2 side (also referred to as “back side”). But the heat insulating material 5 may be constructed in the back side of the whole workpiece
  • the thermal conductivity of the heat insulating material 5 is 0.1 W / (m ⁇ K) or less because the temperature drop of the retained molten steel 61 can be suppressed to the maximum, and further 0.06 W / (m -K) The following is more preferable because the thermal resistance can be almost doubled with a thickness of 3 mm.
  • the heat resistance can be increased as the thickness of the heat insulating material 5 is increased. Moreover, since it will be inferior to workability and thermal resistance will become non-uniform
  • the heat insulating material 5 As the heat insulating material 5, a commercially available product can be used.
  • the heat resistant temperature is 1100 ° C.
  • the thickness is 3 mm
  • the thermal conductivity is 0.02 to 0.08 W / (m ⁇ K).
  • a microporous heat insulating material is mentioned.
  • the heat insulating material 5 is applied to at least the back side of the side wall portion 412.
  • the method of constructing the heat insulating material 5 on the back side of the workpiece refractory layer 4 has an advantage that a heat insulating effect higher than that required for the heat insulating material 5 can be used.
  • the wear rate of the workpiece refractory layer 4 increases due to temperature rise when the back side is insulated, not only the cost but also the wear is increased if the workpiece refractory layer 4 having high resistance to temperature rise is not used. In some cases, the thickness decreases rapidly, and sufficient heat insulation cannot be obtained.
  • the work refractory constituting the work refractory layer 4 similarly to the permanent refractory layer 3, a fixed refractory (molded brick) and an irregular refractory (castable) are known.
  • Indefinite shaped refractories are often used in the ladle of the steel industry because of their ease of construction.
  • the amorphous refractory is made by adding several mass percent of water to a mixture of powder and particles of a high melting point material such as aluminum oxide or magnesium oxide, and fluidizing it by adding molten steel container 1 and a formwork (not shown). ) To form the lining of the molten steel container 1. For this reason, the amorphous refractory has a larger porosity than the regular refractory that is pressure-molded, and the wear and tear accompanying the temperature rise is severe.
  • the present inventors investigated the wear deterioration mechanism for the work refractory used for the side wall portion 412 in which the heat insulating material 5 is arranged on the back side.
  • the work refractory is in contact with the slag at the time of discharging the molten steel even if it is a side wall or a floor other than the slag line. For this reason, first, the inventors focused on the fact that the influence of slag on wear cannot be ignored, and investigated the infiltration depth of the slag component into the amorphous refractory.
  • FIG. 2 is a test result diagram showing the infiltration depth of the slag component into the irregular refractory.
  • the left side shows the case where the back side of the irregular refractory is not thermally insulated, and the right side shows the case where it is insulated.
  • the infiltration depth of the slag component was deepened by about 40% due to the heat insulation. It was found that the infiltration of the slag component changes the mineral structure of the refractory and worsens the melting and cracking due to the lowering of the melting point and the change of the expansion rate.
  • the present inventors conducted a test to insulate the back surface using a commercially available dense amorphous refractory, and although the slag infiltration was reduced by about 20%, it was 10% worse than the case without insulation. It was.
  • the present inventors have sought a method for suppressing slag infiltration and focused on carbon. It is well known that carbon has an effect of preventing infiltration with a large contact angle with slag. However, on the other hand, the thermal conductivity of carbon is as high as several tens of times that of refractory components such as aluminum oxide and magnesium oxide, and it is also known to reduce heat insulation. Moreover, when melting low-carbon steel, there is a concern about picking up carbon from refractories. Therefore, the present inventors examined a carbon content that can avoid such harmful effects while reducing infiltration of slag components.
  • FIG. 3 is a graph showing the relationship between the carbon content and the slag infiltration depth.
  • the horizontal axis represents the carbon content (unit: mass%)
  • the vertical axis represents the index (100) when the depth of slag infiltration at a carbon content of 0.6 mass% is taken as 100. Slag infiltration depth index). From the graph shown in FIG. 3, it was found that the slag infiltration depth can be halved if the carbon content is 1.5 mass% or more.
  • FIG. 4 is a graph showing the relationship between carbon content and thermal conductivity.
  • the horizontal axis represents the carbon content (unit: mass%)
  • the vertical axis represents the thermal conductivity (unit: W / (m ⁇ K)). From the graph shown in FIG. 4, it is found that the thermal conductivity tends to increase with an increase in the carbon content, but in the region where the carbon content is 11% by mass or less, the change in the thermal conductivity is extremely small.
  • the carbon content of the work refractory constituting the side wall portion 412 on which the heat insulating material 5 is applied on the back side is set to 1.5 to 11% by mass, so that the molten steel 61 It was found that the prevention of infiltration of the slag component in the inside and the heat insulating property are highly compatible.
  • the carbon content of the work refractory constituting the side wall portion 412 is preferably as low as not less than 1.5% by mass.
  • the higher the carbon content the higher the durability. Is obtained.
  • 4 mass% or more is preferable.
  • the carbon content exceeds 11% by mass, the heat insulating effect is lost, so the upper limit of the carbon content is 11% by mass.
  • the idea of recycling used refractories into refractory raw materials was conceived, and an economic effect that compensated for the disadvantages of construction economy was obtained.
  • the amorphous refractory easily absorbs moisture from the surrounding atmosphere, and deteriorates if the stock before construction is stored for a long time.
  • regular refractories can be stocked for a long time, and it is possible to select and arrange inexpensive brands from a wide range of remote production locations including overseas. Therefore, as the work refractory constituting the side wall portion 412, the commitment to the amorphous refractory that is currently mainstream in the molten steel container 1 is eliminated, and the fixed refractory is adopted.
  • Patent Document 1 for example, as a work refractory for a container for holding molten iron, a refractory containing silicon carbide (SiC) such as “Al 2 O 3 —SiC—C-based material” is used. Things are used.
  • the molten steel 61 has a higher melting point (1400 to 1540 ° C.) than the melting point of molten iron (about 1200 ° C.), and its transportation, holding, processing, etc. are performed at a high temperature of 1500 to 1640 ° C. It is.
  • the work refractory used for the molten steel container 1 is required to have higher corrosion resistance, it is not preferable to use a material containing silicon carbide (SiC). This is because SiC is easily dissolved in molten steel having a low carbon content as compared with hot metal containing carbon close to saturation, and the melting is accelerated as the temperature increases.
  • SiC silicon carbide
  • the work refractory constituting the side wall portion 412 contains carbon (C) in the above-described content, but does not contain silicon carbide (SiC), and instead, at least magnesium oxide (MgO) is contained.
  • C carbon
  • SiC silicon carbide
  • MgO magnesium oxide
  • Magnesium oxide (MgO) has a remarkable effect on corrosion resistance if it is 5 to 20% by mass, and preferably 5 to 20% by mass. Further, it is preferable to contain 5 to 10% by mass.
  • the regular refractory may further contain refractory components such as aluminum oxide (Al 2 O 3 ) and calcium oxide (CaO).
  • Such a regular refractory include Al 2 O 3 —MgO—C brick, MgO—C brick, and the like, both of which are used as a work refractory for a container for holding hot metal. It is not something that can be done.
  • the carbon contained in the workpiece refractory constituting the side wall portion 412 is, for example, graphite, and a specific example thereof is scaly graphite.
  • the heat insulating material 5 is applied to the back side of the side wall portion 412 and the workpiece refractory constituting the side wall portion 412 does not contain silicon carbide (SiC), and at least magnesium oxide (MgO ) And having a carbon content of 1.5 to 11% by mass, it is possible to achieve both excellent heat insulation and corrosion resistance.
  • SiC silicon carbide
  • MgO magnesium oxide
  • the work refractory constituting the slag line portion 42 will be described.
  • the slag line part 42 there is little area in contact with the molten steel 61.
  • secondary refining such as LF or VOD
  • erosion caused by the slag 62 is intensified, so a refractory specialized for slag erosion must be constructed.
  • the application of the workpiece refractory used for the side wall portion 412 may not always be appropriate due to the fact that the life becomes extremely short compared to the part and the operation becomes difficult.
  • the work refractory constituting the slag line part 42 it is preferable to use a fixed refractory containing at least magnesium oxide (MgO) and having a carbon content of more than 10% by mass and 18% by mass or less.
  • MgO—C brick can be used.
  • the carbon content of the workpiece refractory (standard refractory) constituting the slag line portion 42 is more than 12% by mass and 16% by mass because it can maintain a certain thermal insulation while making the slag erosion resistance better. The following is more preferable.
  • the laying part 411 of the molten steel container 1 is embedded with a nozzle (not shown) for allowing the molten steel 61 and the stirring gas to flow in and out, and it is necessary to withstand wear during steel receiving. (For example, about twice the side wall portion 412). Therefore, heat insulation is relatively high.
  • the floor portion 411 can be easily cast without any special equipment for molding or vibration. From the above, in the floor portion 411, the combined effect of the heat insulating material 5 and the fixed refractory used for the side wall portion 412 is relatively small.
  • the inflow construction of the irregular refractory material generally performed may be used.
  • this does not exclude the installation of the heat insulating material 5 on the back side of the floor portion 411, and does not deny the use of the fixed refractory used for the side wall portion 412.
  • the workpiece refractory layer 4 above the slag line portion 42 is the easiest part to repair on the way. Therefore, the work refractory constituting this part is not particularly limited, and for example, Al 2 O 3 —MgO—C material or MgO—C material shaped refractory, amorphous refractory, or alumina mortar is used. it can.
  • the thickness of the workpiece refractory layer 4 is preferably 90 mm or more. This is because when the remaining thickness of the workpiece refractory reaches approximately 30 mm, the risk of falling off increases. Therefore, disassembly and repair are performed before that, so if the initial thickness of the workpiece refractory is thin, the ratio of effective use is greatly reduced. Because.
  • a permanent refractory layer 3 (thickness: 50 mm) is constructed on the inner side of the iron skin 2 (thickness: 30 mm) using a wax stone brick as a permanent refractory material.
  • a workpiece refractory layer 4 described later was applied to the inside of the material layer 3.
  • a sheet-like microporous heat insulating material was applied as the heat insulating material 5 between the iron shell 2 and the permanent refractory layer 3.
  • the laying part 411 is excellent in heat insulation because it is thicker than other parts, but from the viewpoint of maintainability of the molten steel container 1, it is preferable that the temperature of the outer surface of the iron shell 2 is as low as possible.
  • the heat insulating material 5 was also constructed on the back side. At this time, the thermal conductivity and thickness of the heat insulating material 5 were varied in each example as shown in Table 1 below. In the case where the heat insulating material 5 was not applied, “-” was described in Table 1 below.
  • the work refractory similar to that used for the side wall part 412 was used for the laying part 411 of the work refractory layer 4.
  • the thickness was set to 300 mm.
  • Al 2 O 3 -7 mass% MgO—C brick was used, and the carbon (C) content was As shown in Table 1 below, each example was varied.
  • Al 2 O 3 —SiC—C brick was used, and the contents of carbon (C) and silicon carbide (SiC) were as shown in Table 1 below.
  • Comparative Example 5 an amorphous refractory of 90% by mass Al 2 O 3 -7% by mass MgO-1% by mass SiO 2 was used.
  • “ ⁇ ” was described as the SiC content in Table 1 below.
  • the thickness of the side wall part 412 was 120 mm in common with each example.
  • MgO—C brick is used, and its carbon (C) content is varied in each example as shown in Table 1 below. It was.
  • the thickness of the slag line part 42 was 120 mm in common with each example.
  • alumina mortar is set so as to be at the same level as the upper end of the iron skin 2. It was adjusted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

L'invention porte sur un récipient pour acier liquide, destiné à contenir un acier liquide ayant une teneur en carbone de 2 % en masse ou moins, ledit récipient étant doté d'une structure de garnissage réfractaire qui comprend une coquille en acier, une couche réfractaire permanente et une couche réfractaire de travail, dans cet ordre en partant de l'extérieur. La couche réfractaire de travail est divisée en une section de bain d'acier, qui est destinée à entrer en contact avec l'acier liquide, et une section de marque de laitier, qui est destinée à entrer en contact avec un laitier présent sur l'acier liquide. La section de bain d'acier est encore divisée en une partie de couche, disposée sur le fond du récipient pour acier liquide, et une partie de paroi latérale, qui est disposée sur le côté du récipient pour acier liquide et qui est reliée à la partie de couche et à la section de marque de laitier. Dans le récipient pour acier liquide, une matière isolante thermique, qui a une conductibilité thermique de 0,1W/(m·K) ou moins et une épaisseur de 1 mm ou plus, est en outre disposée sur le côté coquille d'acier, au moins dans la partie de paroi latérale. Le réfractaire de travail, qui constitue la partie de paroi latérale, est un réfractaire mis en forme qui est exempt de carbure de silicium et contient de l'oxyde de magnésium comme composant essentiel et qui a une teneur en carbone de 1,5 à 11 % en masse.
PCT/JP2013/061669 2012-04-24 2013-04-19 Récipient pour acier liquide WO2013161721A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IN2370KON2014 IN2014KN02370A (fr) 2012-04-24 2013-04-19
CN201380021929.6A CN104245190B (zh) 2012-04-24 2013-04-19 钢水容器
KR1020147029580A KR101631400B1 (ko) 2012-04-24 2013-04-19 용강 용기
JP2014512533A JP5800087B2 (ja) 2012-04-24 2013-04-19 溶鋼容器

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JP2012-098555 2012-04-24
JP2012098555 2012-04-24

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WO2013161721A1 true WO2013161721A1 (fr) 2013-10-31

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JP (1) JP5800087B2 (fr)
KR (1) KR101631400B1 (fr)
CN (1) CN104245190B (fr)
IN (1) IN2014KN02370A (fr)
WO (1) WO2013161721A1 (fr)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2015105039A1 (fr) * 2014-01-10 2015-07-16 Ｊｆｅスチール株式会社 Procédé de suppression de l'oxydation de la surface arrière d'un produit réfractaire contenant du carbone, structure de garnissage ainsi que produit réfractaire contenant du carbone
JP2016078105A (ja) * 2014-10-22 2016-05-16 Ｊｆｅスチール株式会社 溶融金属容器
JP2017180855A (ja) * 2016-03-28 2017-10-05 Ｊｆｅスチール株式会社 耐火物構造
JP2019045173A (ja) * 2017-08-30 2019-03-22 日新製鋼株式会社 溶融金属の連続測温プローブ及び連続測温装置

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CN108580867A (zh) * 2018-07-26 2018-09-28 河南海格尔高温材料有限公司 一种安全钢包内衬
CN108971471B (zh) * 2018-08-21 2021-06-18 北京利尔高温材料股份有限公司 一种无碳钢包复合包底施工工艺
CN110254957B (zh) * 2019-06-10 2021-06-04 钢铁研究总院 一种高温液体盛液器系统及其保温方法

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JP5707917B2 (ja) 2009-12-17 2015-04-30 Ｊｆｅスチール株式会社 製鉄用容器
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WO2015105039A1 (fr) * 2014-01-10 2015-07-16 Ｊｆｅスチール株式会社 Procédé de suppression de l'oxydation de la surface arrière d'un produit réfractaire contenant du carbone, structure de garnissage ainsi que produit réfractaire contenant du carbone
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JPWO2015105039A1 (ja) * 2014-01-10 2017-03-23 Ｊｆｅスチール株式会社 炭素含有耐火物の背面酸化抑制方法、ライニング構造体及び炭素含有耐火物
CN105899903B (zh) * 2014-01-10 2018-03-13 杰富意钢铁株式会社 含碳耐火物的背面氧化抑制方法、衬里结构体和含碳耐火物
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JP2017180855A (ja) * 2016-03-28 2017-10-05 Ｊｆｅスチール株式会社 耐火物構造
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CN104245190B (zh) 2017-04-26
JP5800087B2 (ja) 2015-10-28
KR20140139576A (ko) 2014-12-05

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