WO2015019704A1 - 熱風炉の築炉方法 - Google Patents

熱風炉の築炉方法 Download PDF

Info

Publication number
WO2015019704A1
WO2015019704A1 PCT/JP2014/065563 JP2014065563W WO2015019704A1 WO 2015019704 A1 WO2015019704 A1 WO 2015019704A1 JP 2014065563 W JP2014065563 W JP 2014065563W WO 2015019704 A1 WO2015019704 A1 WO 2015019704A1
Authority
WO
WIPO (PCT)
Prior art keywords
brick
castable
heat insulating
spacer
insulating brick
Prior art date
Application number
PCT/JP2014/065563
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
陽 椎野
和美 倉吉
典正 前川
Original Assignee
新日鉄住金エンジニアリング株式会社
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 新日鉄住金エンジニアリング株式会社 filed Critical 新日鉄住金エンジニアリング株式会社
Priority to BR112016002453-2A priority Critical patent/BR112016002453B1/pt
Priority to KR1020167004327A priority patent/KR101804829B1/ko
Priority to EP14835034.1A priority patent/EP3031933B1/en
Priority to RU2016107751A priority patent/RU2615383C1/ru
Priority to CN201480044054.6A priority patent/CN105452491A/zh
Publication of WO2015019704A1 publication Critical patent/WO2015019704A1/ja

Links

Images

Classifications

    • 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
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1626—Making linings by compacting a refractory mass in the space defined by a backing mould or pattern and the furnace wall
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • C21B9/02—Brick hot-blast stoves
    • C21B9/06—Linings

Definitions

  • the present invention relates to a method for constructing a hot stove, and relates to a method for constructing a hot stove for supplying hot air to a blast furnace.
  • a hot stove has been used as equipment for supplying hot air to a blast furnace for iron making.
  • Multiple hot blast furnaces (3 to 5) are installed for each blast furnace, and heat is stored in one of them, and hot air is supplied to the blast furnace, so that hot air can be continuously supplied to the blast furnace. It has become.
  • Each hot stove has a combustion chamber in which a burner for heating is installed, and a heat storage chamber filled with checker bricks as a heat storage medium. And as a heat storage operation
  • FIG. 24 shows an external combustion type hot stove 1 as an example.
  • the hot stove 1 is an external combustion type in which a combustion chamber and a heat storage chamber are separated, and has two furnace bodies, a combustion chamber furnace body 2 and a heat storage chamber furnace body 3.
  • the illustrated hot stove 1 is one for a plurality of installed hot blast furnaces.
  • a burner 21 is formed at the furnace bottom portion.
  • the burner 21 mixes and burns the fuel gas introduced into the fuel gas introduction part 22 and the air introduced into the air introduction part 23, and generates high-temperature combustion gas that flows toward the top of the furnace.
  • a hot air supply unit 24 leading to the blast furnace is installed on the side surface of the combustion chamber furnace body 2.
  • the combustion chamber furnace body 2 is connected to the furnace top portion of the heat storage chamber furnace body 3 by a connecting pipe 25.
  • a checker brick 31 as a heat storage medium is stacked in the heat storage chamber furnace body 3. The checker bricks 31 are stacked without any gap from the furnace bottom portion of the heat storage chamber furnace body 3 to the vicinity of the furnace top.
  • the checker bricks 31 are stacked such that a large number of ventilation holes are formed therethrough and the ventilation holes communicate with each other. Therefore, in many stacked checker bricks 31, the heat storage chamber furnace body 3 can be ventilated from the furnace bottom part to the furnace top part. An intake / exhaust port 32 opened to the outside is formed in the furnace bottom portion of the heat storage chamber furnace body 3.
  • heat storage and ventilation are performed as follows.
  • the fuel gas is burned by the burner 21 to generate the combustion gas that rises in the combustion chamber furnace body 2, and this combustion gas is introduced into the heat storage chamber furnace body 3 from the connecting pipe 25.
  • the introduced combustion gas is passed downward through the checker brick 31, and the heat of the combustion gas is stored in the checker brick 31 during that time.
  • the combustion gas that has passed through the checker brick 31 is discharged from the intake / exhaust port 32.
  • outside air is sucked into the heat storage chamber furnace body 3 through the intake / exhaust port 32, and the sucked outside air is passed upward through the checker brick 31 while being stored in the checker brick 31.
  • the outside air is heated with heat to generate hot air, and this hot air is introduced into the combustion chamber furnace body 2 from the connecting pipe 25 and supplied from the hot air supply unit 24 to the blast furnace.
  • the combustion chamber furnace body 2 and the regenerative chamber furnace body 3 are both formed of a cylindrical iron skin 4 whose outer shell is protected from the high temperature inside the furnace.
  • a lining 5 is formed.
  • FIG. 25 shows the lining 5 of the combustion chamber furnace body 2.
  • the lining 5 includes a castable 51 formed on the inner surface of the iron skin 4, a heat insulating brick 52 stacked on the inside thereof, and a refractory brick 53 stacked on the inside thereof.
  • the inside of the refractory brick 53 is a cavity, and this cavity becomes an air path in the combustion chamber furnace body 2.
  • an expansion margin portion 54 is formed between a layer of heat insulating brick 52 and a layer of refractory brick 53.
  • the refractory brick 53 may thermally expand greatly and may be displaced radially outward of the furnace body to interfere with the heat insulating brick 52.
  • the thermal expansion of the refractory brick 53 is provided as shown in FIG. 26 by providing an expansion margin portion 54 continuous in the circumferential direction of the furnace body between the layer of the heat insulating brick 52 and the layer of the refractory brick 53. Is allowed at the expansion margin 54 (see Patent Document 1).
  • the gap is filled with a flexible and irregular shaped filler (filler) such as ceramic fiber or foamed plastic, or a foamable filler is injected and foamed to fill every corner. After that, it is solidified and held in the gap. Even when the foamable filler is solidified, the solidified foamable filler is sufficiently soft and does not hinder the thermal expansion of the refractory bricks 53 as in the case of the soft and irregular shaped filler.
  • a flexible and irregular shaped filler filler
  • the solidified foamable filler is sufficiently soft and does not hinder the thermal expansion of the refractory bricks 53 as in the case of the soft and irregular shaped filler.
  • Such an expansion margin portion 54 is not limited to be formed between the layer of the heat insulating brick 52 and the layer of the refractory brick 53 but may be formed between the layer of the heat insulating brick 52 and the castable 51.
  • FIGS. 27 and 28 show different structures of the lining 5 of the combustion chamber furnace body 2.
  • the expansion margin part 54 as shown in FIG. 25 is not formed between the layer of the heat insulating brick 52 and the layer of the refractory brick 53.
  • gaps are formed between the refractory bricks 53 arranged in the circumferential direction of the furnace body, and an expansion allowance portion 54 that is continuous in the radial direction of the furnace body is formed by the gaps.
  • the lining 5 of the combustion chamber furnace body 2 has been described above, the lining 5 of the heat storage chamber furnace body 3 is configured similarly. As shown in FIG. 29, in the heat storage chamber furnace body 3, for example, the lining 5 shown in FIG. 25 is formed on the inner side of the iron skin 4, and the checker brick 31 is not spaced inside the innermost refractory brick 53. Stacked.
  • a scaffold is built inside the combustion chamber furnace body 2 or the heat storage chamber furnace body 3, or a gondola is suspended, and the iron skin 4 is placed at a predetermined height in the furnace.
  • the castable 51 is sprayed inside.
  • the work which piles up the heat insulation brick 52 and the refractory brick 53 inside the castable 51 was performed (refer patent document 2 and patent document 3).
  • the heat-insulating bricks 52 and the refractory bricks 53 are divided into layers of a height (about 1.2 m) that can be easily constructed by an operator, and the layers are stacked in sequence.
  • JP-A-8-269514 Japanese Examined Patent Publication No. 56-24007 JP 2009-115444 A
  • the scaffold or the gondola is used for spraying the castable 51 to the inside of the iron skin 4, it is necessary to assemble these before the castable 51 is sprayed. Further, since the scaffold or gondola used for spraying the castable 51 interferes with the heat insulating bricks 52 and the refractory bricks 53 stacked inside the castable 51, it is necessary to dismantle them prior to the stacking. That is, between the construction of the castable 51 and the stacking work of the heat insulating brick 52 and the refractory brick 53, a process of installing and dismantling the work scaffold or gondola is necessary. An increase was inevitable.
  • An object of the present invention is to provide a method for constructing a hot blast furnace in which the lining of the furnace body can be performed easily and in a short period of time.
  • the furnace body has an iron skin and a lining formed inside the iron skin, and the lining is installed inside the castable and the castable inside the iron skin.
  • a method for constructing a hot stove having a heat insulating brick and a refractory brick installed inside the heat insulating brick, wherein the heat insulating brick and the refractory brick are installed at an interval inside the iron skin. Thereafter, the castable is injected between the iron shell and the heat insulating brick, and the heat insulating brick generates a radially inward force of the furnace body by the head pressure from the castable from the heat insulating brick to the refractory brick.
  • the castable is solidified while preventing the thermal insulating brick from being displaced and divided.
  • the fire brick may be installed, or after installing the fire brick from the inner surface of the furnace, the heat insulating brick may be installed.
  • the order is not limited, and castable is poured and solidified after the construction of these heat-insulating bricks and refractory bricks.
  • the castable since the castable is not spraying, there is no need to install and disassemble a scaffold or gondola inside the iron skin, and the lining of the furnace body can be performed easily and in a short period of time.
  • the heat insulating brick receives a load or blow from the castable (force inward in the radial direction of the furnace body due to the head pressure of the castable).
  • the blow can be borne from the insulating brick to the refractory brick. For this reason, for example, it is possible to prevent inconveniences such as displacement or division of the stacked heat-insulating bricks, which is a concern when receiving a load from the castable with only heat-insulating bricks.
  • the lining has an expansion margin portion between the heat insulation brick and the fireproof brick, between the heat insulation bricks, between the fire bricks, and in the expansion margin portion, It is desirable to interpose a spacer that has a predetermined strength at normal temperature and disappears at the furnace temperature during operation of the hot stove.
  • the expansion allowance part can accept
  • the expansion allowance portion is only a freely deformable space or a soft filler, it is not possible to obtain a load burden from the heat insulating brick to the refractory brick as an essential function of the present invention.
  • the load burden necessary for the present invention can be achieved.
  • the spacer has a predetermined strength, and this spacer enables load transmission from the heat insulating brick to the refractory brick. Therefore, when castable is injected between the iron skin and the insulating brick, even if the insulating brick receives a load or blow from the castable, the load or blow must be reliably borne from the insulating brick to the refractory brick. Can do. Although not included in the present invention, it is also possible to pour castables without stacking refractory bricks by stacking only heat insulating brick layers.
  • a support such as a press plate and a beam is provided on the furnace inner surface side of the heat-insulating brick layer, or the one-time stacking height of the heat-insulating brick is kept low. Construction is possible by this method, but it is inefficient and costly.
  • the spacer melts and disappears from the expansion margin as the furnace temperature rises after firing, the expansion margin can perform the intended function, and the thermal expansion of the refractory bricks Can be tolerated. Therefore, in the spacer of the present invention, as the predetermined strength, it is only necessary to obtain a strength greater than the load that should be borne when casting castable, and it is desirable to design appropriately according to the hot stove to which the present invention is applied. .
  • the spacer is preferably a thermoplastic resin foam.
  • a polystyrene foam frequently used as a buffer material that is, a polystyrene resin (PS) foam can be used, and a foam of other thermoplastic resin may be used.
  • Other thermoplastic resins include LDPE (low density polyethylene resin), HDPE (high density polyethylene resin), EVA (polyethylene vinyl alcohol resin), PP (polypropylene resin), PVC (polyvinyl chloride resin), PE / PS blends Resin, PMMA (acrylic resin), ABS (acrylonitrile butadiene styrene copolymer resin) and the like can be used.
  • the spacer is made of a thermoplastic resin foam, so that the temperature characteristics as the spacer of the present invention (strength at normal temperature and softening and melting with increasing temperature) can be obtained. Adjustment and shape processing are easy and can be ensured at low cost.
  • a spacer what molded the thermoplastic resin foam mentioned above in the shape of a block can be utilized, for example. Further, it may be a lattice structure of a thermoplastic resin, a honeycomb structure, or the like.
  • the material of the spacer is not limited to a synthetic resin material having thermoplasticity, and may be paper (such as cardboard).
  • a filler that is soft or indeterminate at room temperature is interposed in the expansion margin portion together with the spacer.
  • disappears in an expansion allowance part it will be in the state with which the expansion allowance part was filled.
  • the filler can follow this deformation, filling the gap of the refractory brick while allowing the thermal expansion of the refractory brick, and the intrusion of hot air Can be prevented.
  • a ceramic fiber having heat resistance is preferable.
  • the filler may be packed in a hollow portion where there is no spacer of the expansion margin, or may be packed in a cavity or a recess formed in the spacer, or when the spacer is a synthetic resin molded product, It may be melted.
  • the hot stove is preferably provided with checker bricks inside the lining, and the castable injection is preferably performed during or after the checker bricks are installed.
  • pouring is performed during the installation operation
  • the furnace body is divided into a plurality of sections arranged in the height direction, and the castable injection is performed for each section.
  • the sections may be set according to this.
  • the heat insulating bricks and the refractory bricks may be preceded and the castable injection may be performed.
  • Brick stacking and castable pouring may be performed simultaneously.
  • the castable injection height is about 1.2 m, it is easy to visually check foreign matters such as road tools entering the castable injection portion from above and the castability fluidity.
  • the heat insulating bricks are installed in a plurality of layers in the thickness direction of the lining, and the horizontal joints in the circumferential direction of the heat insulating bricks of each layer are shifted from each other.
  • the joints of the respective layers of the heat insulating brick are displaced, even if a load or blow caused by castable injection is applied, the load is borne by the displacement of each joint, thereby preventing the heat insulating brick from being displaced or divided. It is effective.
  • the castable desirably has a free flow value of 200 mm or more and 300 mm or less.
  • the free flow value is 200 mm or more, the fluidity of the castable is ensured, and even when it is poured into the gap between the iron skin and the heat insulating brick, reliable filling is obtained to every corner.
  • the free flow value is set to 300 mm or less, it is possible to prevent quality defects or clogging of hoses due to separation of castable components during injection.
  • the castable is not spraying construction, it is not necessary to install and disassemble the scaffold or gondola inside the iron skin, and the lining of the furnace body can be performed easily and in a short period of time.
  • the longitudinal cross-sectional view which shows the lining of 1st Embodiment of this invention The longitudinal cross-sectional view which shows the installation process of the 1st layer of the heat insulation brick in the said 1st Embodiment.
  • the longitudinal cross-sectional view which shows the state at the time of the operation
  • the longitudinal cross-sectional view which shows the construction order in case a castable is inject
  • the longitudinal cross-sectional view which shows the construction order in the case of inject
  • the longitudinal cross-sectional view which shows the lining of 2nd Embodiment of this invention.
  • the furnace is built on the combustion chamber furnace body 2 (see FIG. 25) of the hot stove 1 (see FIG. 24).
  • a unique structure and construction procedure based on the present invention is adopted particularly for the lining 5 installed in the furnace body (combustion chamber furnace body 2).
  • the lining 5 includes a castable 51 formed on the inner surface of the iron skin 4, two layers of heat insulating bricks 52 stacked on the inside thereof, and one layer of refractory bricks 53 stacked on the inside thereof. Further, an expansion margin 54 is provided between the layer of the heat insulating brick 52 and the layer of the refractory brick 53.
  • These castable 51, heat insulating brick 52, refractory brick 53 and expansion allowance 54 are the same as those of the lining 5 shown in FIG. However, in this embodiment, the injection procedure of the castable 51 and the configuration of the expansion margin portion 54 are unique.
  • the castable 51 of the present embodiment is injected into the gap between the heat-insulating brick 52 and the iron skin 4 that have been previously installed, and is solidified. In other words, there is no need to repeat the installation of the scaffolding and the spraying work at a plurality of heights, as in the construction of the existing castable 51.
  • the castable 51 of the present embodiment has the same basic components as the existing castable. However, in order to reliably inject between the heat insulating brick 52 and the iron skin 4 to every corner without using a vibrator, The free flow value indicating the fluidity is adjusted to be 200 to 300 mm.
  • the moisture of the castable 51 is absorbed by the heat-insulating bricks constructed on the inner surface of the castable 51, and the fluidity is lowered.
  • a water-repellent treatment in advance on the contact surface of the heat insulating brick.
  • such processing increases costs.
  • the water repellent treatment is not performed on the surface of the heat insulating brick, and the castable is directly applied to the surface of the heat insulating brick so that the castable and the heat insulating brick are firmly bonded to each other. There is no gap, and it is possible to prevent the back air that the hot air in the hot stove invades into the iron skin and the castable surface.
  • the expansion allowance portion 54 is configured by interposing a spacer 55 and a filler 56 in the gap between the heat insulating brick 52 and the refractory brick 53.
  • the load of the head pressure due to the injection can be transmitted from the heat insulating brick 52 to the refractory brick 53.
  • the spacer 55 is a long block that continuously extends in the horizontal direction through the gap between the heat insulating brick 52 and the refractory brick 53.
  • the spacer 55 is rectangular in cross section, the furnace body outer surface of the spacer 55 is in intimate contact with the inner surface of the heat insulating brick 52, and the furnace body side surface of the spacer 55 is in intimate contact with the outer surface of the refractory brick 53.
  • the furnace body radial direction of the spacer 55 is set to be equal to the distance between the heat insulating brick 52 and the refractory brick 53 so as to ensure close contact with the heat insulating brick 52 and the refractory brick 53.
  • the spacer 55 is a block formed of, for example, a foamed polystyrene resin, and is hard, that is, has a certain degree of rigidity, among the foamed polystyrene resin blocks so that the load from the heat insulating brick 52 can be transmitted to the fireproof brick 53. It is supposed to be. The following procedure is adopted when selecting the rigidity (compression elastic modulus) of the foamed polystyrene.
  • FIG. 31 shows the relationship between the compression elastic modulus and the spacer insertion ratio.
  • the insertion ratio of the expanded polystyrene is 100% when all the expansion allowance is expanded polystyrene as shown in FIG. 12, and 10% when the expanded polystyrene of 46 mm is inserted every 460 mm in the height direction as shown in FIG. . That is, as shown by a curve P1 in FIG. 31, when a castable is installed every 2 m in the height direction and 46 mm of foamed polystyrene is inserted every 460 mm in height, the compression elastic modulus required is 80 kg / cm 2 (785 N / Cm 2 ) or more.
  • the compression elastic modulus required is 50 kg / cm 2 (490 N / cm 2 ) Or more.
  • the gap between the heat insulating brick 52 and the refractory brick 53 where the spacer 55 is arranged is curved in an arc shape in the horizontal direction.
  • construction for example, temporarily fixing to the inner surface of the heat insulating brick 52
  • a laminate of a plurality of thin plates 55A molded with a polystyrene foam resin is used.
  • a spacer 55 that has been curved in advance in an arc shape.
  • a base material 55 ⁇ / b> B having a rectangular cross-sectional shape is formed of a polystyrene foam resin, and linearly extending, and a plurality of notches 55 ⁇ / b> C having a predetermined width are formed on one surface thereof.
  • the base material 55B can be easily bent by the amount of the cut 55C cut by bending the cut 55C toward the inside.
  • a base material 55B similar to that of FIG. 18 is molded, and this is cut with a cutting surface inclined with respect to the longitudinal direction, whereby a large number of small pieces 55D whose planar shape is an isosceles trapezoid. Form.
  • the spacer 55 described above is intermittently arranged at a plurality of heights, and in the gap between the heat insulating brick 52 and the refractory brick 53, a hollow portion is left between the vertically adjacent spacers 55. .
  • a hollow portion between the spacers 55 is filled with a filler 56.
  • the filler 56 is a heat-resistant ceramic fiber or the like, and can be arbitrarily deformed in shape and thickness by an external force.
  • the filler 56 is installed in an amount sufficient to fill a gap remaining between the heat insulating brick 52 and the refractory brick 53 after the blast furnace 53 is operated and the refractory brick 53 is thermally expanded.
  • the ratio of the area where the spacer 55 is in intimate contact with the surface of the heat insulating brick 52 or the refractory brick 53 (with respect to the total of the area of the spacer 55 in close contact with the area where the filler 56 is accommodated).
  • the ratio is, for example, 10 to 50%.
  • the required amount of the spacer 55 can be reduced, and the material cost can be reduced.
  • the load transmitted from the heat insulating brick 52 to the refractory brick 53 is concentrated in a small area, it is necessary to increase the rigidity of the material of the spacer 55. When this ratio is increased, the load from the heat insulating brick 52 to the refractory brick 53 can be transmitted over a wide area, and the rigidity of the material of the spacer 55 can be reduced.
  • the expansion allowance portion 54 may be entirely composed of the spacer 55, and the ratio may be 100% (see the fourth embodiment to be described later). Also good.
  • the construction procedure of the lining 5 in this embodiment is as follows. First, as shown in FIG. 2, a first-layer heat-insulating brick 52 is constructed at a predetermined interval inside the iron skin 4 of the combustion chamber furnace body 2. Next, as shown in FIG. 3, the second-layer heat-insulating brick 52 is constructed in close contact with the inside of the first-layer heat-insulating brick 52. At this time, the joints of the second-layer insulating bricks 52 are shifted from each other in the height direction with respect to the lateral joints of the first-layer insulating bricks 52. Further, an adhesive mortar or the like is applied between the heat insulating bricks 52 of each layer and between the first layer and the second layer, and is fixed to each other.
  • a spacer 55 extending in the horizontal direction is installed at a predetermined height position on the inner surface of the second-layer heat-insulating brick 52.
  • a double-sided adhesive tape or the like is used, and the spacer 55 is temporarily fixed to the inner side surface of the heat insulating brick 52.
  • a filler 56 is packed between the spacers 55 adjacent in the vertical direction.
  • the filler 56 may be installed in a state of being packed in a bag or the like, and is preferably temporarily fixed to the inner side surface of the upper spacer 55 or the heat insulating brick 52 with a double-sided adhesive tape or the like.
  • the refractory brick 53 is constructed in a close state inside the spacer 55.
  • the spacer 55 is sandwiched between the heat insulating brick 52 and the refractory brick 53 and a compression force is applied so that the spacer 55 is in close contact with the heat insulating brick 52 and the refractory brick 53.
  • castable 51 is injected into the gap between the inner surface of the iron skin 4 and the outer surface of the first-layer heat-insulating brick 52 and solidified.
  • the castable 51 may be poured from above or may be gradually poured from below using an injection pipe 41 penetrating the iron skin 4 as shown in FIG.
  • the lining 5 including the castable 51, the heat insulating brick 52, the refractory brick 53, and the expansion margin portion 54 is formed by the above procedure.
  • the spacer 55 is melted by the heat in the furnace and disappears from the expansion margin 54, and the filler 56 contracts due to expansion of the refractory brick. It will be in the state with which the part 54 was filled.
  • the horizontal joint of the first layer and the horizontal joint of the second layer are arranged so as to be shifted from each other, so that the load due to the casting of the castable 51 (the furnace body by the head pressure of the castable 51) Even if the first-layer heat-insulating brick 52 tries to displace to the inside of the furnace due to the inward force in the radial direction of the above-mentioned, the displacement is suppressed at the intermediate portion of the second-layer heat-insulating brick 52.
  • the insulating bricks 52 of each layer and between the first layer and the second layer of the insulating brick 52 are fixed to each other with an adhesive mortar or the like, the load due to the casting of the castable 51 is applied. Can be dispersed. Therefore, the heat-insulating brick 52 itself can also increase the strength against the load or blow caused by the casting of the castable 51.
  • the lining 5 has an expansion allowance 54 between the heat insulating brick 52 and the refractory brick 53, and the expansion allowance 54 has a predetermined strength at room temperature and is a furnace in operation of the hot stove.
  • a spacer 55 that disappears at the internal temperature is interposed.
  • the spacer 55 is interposed between the heat-insulating brick 52 and the refractory brick 53 in a state of having a predetermined strength before the operation as a building furnace, that is, as a hot stove, and the load applied to the heat-insulating brick 52 when the castable 51 is injected. (Force inward in the radial direction of the furnace body due to the head pressure of the castable 51) can be transmitted to the refractory brick 53.
  • the heat insulating brick 52 receives a load or blow (force inward in the radial direction of the furnace body) due to the head pressure from the castable 51.
  • this load or blow can be transmitted from the heat-insulating brick 52 to the refractory brick 53 via the spacer 55 installed in the expansion margin 54. Therefore, it is possible to reliably bear a portion having a sufficiently large mass from the heat insulating brick 52 to the refractory brick 53.
  • the spacer 55 is made of, for example, styrene foam resin, it disappears due to the heat in the furnace when the hot blast furnace is operated after firing, and allows thermal expansion of the refractory brick 53 (displacement in the radial direction of the furnace body). I can. That is, after the hot stove is fired, the spacer 55 melts and disappears from the expansion margin 54 as the furnace temperature rises. For this reason, the expansion allowance portion 54 can perform the intended function, and thermal expansion of the refractory brick 53 can be allowed.
  • the spacer 55 by using a polystyrene resin foam (foamed polystyrene) as the spacer 55, temperature characteristics as the spacer 55 (strength at normal temperature, softening and melting as the temperature rises) are obtained, and strength of the spacer 55 is increased. Adjustment and shape processing are easy and can be ensured at low cost.
  • the expansion margin portion 54 is provided with a spacer 56 and a filler 56 that is soft or indefinite at room temperature. For this reason, after the spacer 55 disappears in the expansion allowance portion 54, the filler 56 is filled in the expansion allowance portion 54. And when the clearance gap of the expansion allowance part 54 shrinks with the thermal expansion of the refractory brick 53, the filler 56 can follow this deformation
  • the castable 51 is injected only after the heat insulating brick 52, the spacer 55 and the filler 56 of the expansion margin 54, and the refractory brick 53 are installed.
  • the casting of the castable 51 may be performed for each layer having a predetermined height, or may be performed collectively for a plurality of layers having a predetermined height.
  • the level of the predetermined height is a height of about 1.2 m suitable for the worker to construct the heat insulating brick 52, the spacer 55 and the filler 56 of the expansion margin 54, and the refractory brick 53.
  • FIG. 8 shows a procedure for injecting the castable 51 for each layer.
  • the combustion chamber furnace body 2 has a plurality of levels (including levels C1 to C3).
  • the lining 5 is applied to the inside of the iron skin 4 in the order indicated by reference numerals 1 to 15.
  • the heat insulating bricks 52 are installed in two layers with a predetermined interval inside the iron skin 4 (reference numerals 1 and 2), and the expansion margin part 54 (spacer 55 and filler 56) is installed inside thereof. (Reference numeral 3), and a refractory brick 53 is installed inside (reference numeral 4). And castable 51 is inject
  • a framework scaffolding such as a single pipe assembly for 1.2 meters or a bittery scaffolding
  • the heat insulating brick 52 (reference numeral 6 and reference numeral 7), the expansion margin part 54 (reference numeral 8) and the refractory brick 53 (reference numeral 9) are installed, and the castable 51 is injected (reference numeral 10).
  • a similar framework scaffold will be set up temporarily.
  • the heat insulating brick 52 (reference numeral 11 and reference numeral 12), the expansion margin part 54 (reference numeral 13) and the refractory brick 53 (reference numeral 14) are installed, and the castable 51 is injected (reference numeral 15).
  • the castable 51 may be injected from above by placing an operator on the upper surface of the heat insulating brick 52 of each layer and penetrating the iron skin 4 in the lower part of each layer C1 to C3.
  • An injection tube 41 may be provided for injection.
  • FIG. 9 shows a procedure in a case where casting of the castable 51 is performed collectively for a plurality of hierarchies.
  • the combustion chamber furnace body 2 has a plurality of levels (including levels C1 to C4).
  • the lining 5 is applied to the inside of the iron shell 4 in the order indicated by reference numerals 1 to 17.
  • the heat insulating bricks 52 are installed in two layers with a predetermined interval inside the iron skin 4 (reference numerals 1 and 2), and the expansion margin part 54 (spacer 55 and filler 56) is installed inside thereof. (Reference numeral 3), and a refractory brick 53 is installed inside (reference numeral 4). After that, a framework scaffolding (such as a single pipe assembly for 1.2 meters or a bittery scaffolding) will be temporarily installed.
  • the heat insulating brick 52 similarly, the heat insulating brick 52 (reference numeral 5 and reference numeral 6), the expansion margin 54 (reference numeral 7), and the refractory brick 53 (reference numeral 8) are installed. In this state, the castable 51 is injected into two layers of the layer C1 and the layer C2 between the iron skin 4 and the heat insulating brick 52 (reference numeral 9). After that, a similar framework scaffold will be set up temporarily.
  • the heat insulating brick 52 (reference numeral 10 and reference numeral 11), the expansion margin 54 (reference numeral 12), and the refractory brick 53 (reference numeral 13) are similarly installed.
  • a similar framework scaffold will be set up temporarily.
  • the heat insulation brick 52 (code
  • the castable 51 is injected into the two layers of the layer C3 and the layer C4 between the iron skin 4 and the heat insulating brick 52 (reference numeral 18).
  • the castable 51 may be injected into the layers C1 and C2 and the layers C3 and C4 by an operator on the upper surfaces of the heat insulating bricks 52 of the upper layers C2 and C4. You may inject
  • the spacer 55 of the first embodiment is intermittently installed at every predetermined height of the expansion allowance portion 54 and the space 56 is filled with the filler 56.
  • the volume of the spacer 55 may be expanded, and a concave portion or the like may be formed on the surface thereof, and the filler 56 may be accommodated therein.
  • the spacer 55 has a rectangular parallelepiped main body, a concave portion 55E is formed on the surface of the main body, and the concave portion 55E is filled with a filler 56.
  • the spacer 55 has an E-shaped cross section and has a main body continuous in the longitudinal direction, and a concave groove 55F continuous on one surface is filled with a filler 56. Even when such a spacer 55 is used, the installation of the filler 55 is performed at the same time as the installation of the spacer 55, and the work process can be simplified to improve the efficiency.
  • the spacer 55 in which such a filler 56 can be accommodated is not limited to the block-shaped main body in which the concave portion 55E or the concave groove 55F is formed, and the main body of the spacer 55 may have a shape other than the block.
  • the main body of the spacer 55 has a lattice shape in which shafts 55G of a thermoplastic resin having a predetermined rigidity are vertically and horizontally assembled, and a filler 56 is held in the inner space of the lattice.
  • the main body of the spacer 55 is composed of a thermoplastic resin honeycomb structure 55H having a predetermined rigidity, and a filler 56 is held in the inner space.
  • the shaft member 55G or the honeycomb structure 55H maintains a predetermined rigidity before the hot stove is fired. Therefore, the load of the heat insulating brick 52 shown in FIG. The function of transmitting to 53 can be ensured.
  • the shaft material 55G or the honeycomb structure 55H is softened or melted by the heat in the furnace, thereby allowing thermal expansion of the refractory bricks 53.
  • the filler 56 held in the lattice of the shaft member 55G or the honeycomb structure 55H remains as the expansion margin portion 54, and the expansion margin portion 54 (intermittent spacer 55) of the first embodiment described above thereby remains. Further, the same effect as that of the filler 56) can be obtained.
  • the heat storage chamber furnace body 3 constituting the hot stove 1 (see FIG. 24) is constructed.
  • a heat storage chamber furnace body 3 is obtained by stacking checker bricks 31 inside the same structure as the combustion chamber furnace body 2 (see FIG. 1) described in the first embodiment. Therefore, the description of the same structure as the combustion chamber furnace body 2 described above is omitted.
  • the installation of the checker brick 31 is added inside the refractory brick 53 after the procedure described in the first embodiment (see FIGS. 2 to 7). . Therefore, the description of the procedure similar to that of the combustion chamber furnace body 2 described above is also omitted. According to this embodiment, the same effect as that of the first embodiment described above can be obtained also in the heat storage chamber furnace body 3.
  • a furnace having a different structure (see FIGS. 11 and 12) of the combustion chamber furnace body 2 constituting the hot stove 1 (see FIG. 24) is performed.
  • a unique structure and construction procedure based on the present invention is adopted particularly for the lining 5 installed in the furnace body (combustion chamber furnace body 2).
  • the lining 5 includes a castable 51 formed on the inner surface of the iron skin 4, a heat insulating brick 52 stacked on the inside thereof, and a refractory brick 53 stacked on the inside thereof. Furthermore, it has the expansion allowance part 54 continuous in a radial direction between the refractory bricks 53 arranged in the circumferential direction of the furnace body.
  • the castable 51, the heat insulating brick 52, the refractory brick 53, and the expansion allowance 54 are the same as those of the lining 5 shown in FIGS. 27 and 28 described above. However, in this embodiment, the injection procedure of the castable 51 and the configuration of the expansion margin portion 54 are unique.
  • the castable 51 of the present embodiment is injected into the gap between the heat-insulating brick 52 and the iron skin 4 previously installed and solidified, as in the first embodiment described above.
  • the castable 51 is adjusted so that the free flow value is 200 to 300 mm.
  • the expansion allowance portion 54 is configured by interposing a spacer 55 and a filler 56 in the gap between the heat insulating brick 52 and the refractory brick 53. Thereby, when the load from the heat insulating brick 52 is received by the fireproof brick 53, the expansion allowance portion 54 is not narrowed, and the heat insulating brick 52 can be reliably supported.
  • the spacer 55 is a bar-like block having a rectangular cross section and formed of a rigid foam polystyrene similar to that of the first embodiment.
  • the spacer 55 is installed in the gap between the refractory bricks 53 along the horizontal and radial directions.
  • the spacer 55 is installed in a state of being pressed by the fire bricks 53 on both sides, and is thereby in close contact with the surfaces of the fire bricks 53 on both sides.
  • the spacer 55 described above is intermittently arranged at a plurality of heights, and in the gap between the refractory bricks 53, a hollow portion is left between the vertically adjacent spacers 55.
  • a hollow portion between the spacers 55 is filled with a filler 56.
  • the filler 56 is a heat-resistant ceramic fiber or the like, and can be arbitrarily deformed in shape and thickness by an external force.
  • the filler 56 is installed in such an amount that the gap remaining in the heat insulating brick 52 and the refractory brick 53 can be filled after the hot stove is operated and the refractory brick 53 is thermally expanded.
  • the construction procedure of the lining 5 in this embodiment is as follows. First, two layers of heat-insulating bricks 52 are installed inside the iron skin 4 with a space therebetween, and the refractory bricks 53 are installed inside thereof. When stacking refractory bricks 53, after stacking one refractory brick 53, an expansion margin 54 (spacer 55 and filler 56) is installed on the side surface, and the adjacent refractory bricks 53 are stacked so as to sandwich this portion. go. When these steps are repeated to install the heat insulating brick 52, the refractory brick 53, and the expansion allowance 54, the castable 51 is poured into the gap between the iron shell 4 and the heat insulating brick 52. About the injection
  • the same effect as that of the first embodiment described above can be obtained.
  • the castable 51 can be injected for each layer or a plurality of layers at once as in the first embodiment described above.
  • the present embodiment has substantially the same configuration as that of the first embodiment described above, but the configuration of the expansion allowance portion 54 is different.
  • the combustion chamber furnace body 2 of the present embodiment has a lining 5 inside the iron skin 4 as in the first embodiment, and the lining 5 includes a castable 51, a heat insulating brick 52, a refractory brick 53 and an expansion.
  • a surrogate part 54 is provided. Details of elements other than the expansion allowance portion 54 in the lining 5 of the present embodiment and the installation procedure of the lining 5 are the same as those in the first embodiment described above, and thus redundant description is omitted. The difference regarding 54 will be described.
  • the expansion allowance portion 54 of the first embodiment described above is composed of spacers 55 arranged at a predetermined interval as shown in FIG. 1 and fillers 56 filled therebetween.
  • the ratio of the spacer 55 in the expansion margin 54 is 100%.
  • the spacer 57 of the present embodiment a material obtained by mixing the hard foamed polystyrene resin similar to the spacer 55 of the first embodiment described above with the ceramic fiber used as the filler 56 in the first embodiment described above can be used. .
  • the same material (not including ceramic fiber) as the spacer 55 of the first embodiment described above may be used.
  • the same effect as that of the first embodiment described above can be obtained. That is, since the castable 51 is an injection type, a scaffold for it can be omitted. Further, the spacer 57 transmits the load from the heat insulating brick 52 to the refractory brick 53, and can reliably receive the load or blow due to the head pressure accompanying the injection of the castable 51. On the other hand, the spacer 57 is melted by the heat in the furnace after the hot stove is turned on and disappears. However, the ceramic fiber mixed in the spacer 57 serves as an expansion margin 54 between the heat insulating brick 52 and the refractory brick 53. It remains and can replace the function of the filler 56 (see FIG. 1) of the first embodiment, and the construction is also easier than the installation of the expansion margin portion 54 of the first embodiment.
  • the heat storage chamber furnace body 3 constituting the hot stove 1 (see FIG. 24) is constructed.
  • the heat storage chamber furnace body 3 has a checker brick 31 inside the same structure as that of the combustion chamber furnace body 2 (see FIG. 1) described in the first embodiment, as in the second embodiment described above. Are stacked. Therefore, the description which overlaps about the structure and construction procedure similar to 2nd Embodiment mentioned above is abbreviate
  • the spacer 55 arranged intermittently as in the first embodiment and the filler 56 filled therebetween are used.
  • the spacers 57 mixed with ceramic fibers are installed at a ratio of 100% as the expansion margin 54. According to this embodiment, the same effect as that of the first embodiment described above can be obtained in the heat storage chamber furnace body 3 as well.
  • a furnace having a different structure (see FIGS. 15 and 16) of the combustion chamber furnace body 2 constituting the hot stove 1 (see FIG. 24) is constructed.
  • the lining 5 has an expansion margin portion 54 that is continuous in the radial direction between the refractory bricks 53 arranged in the circumferential direction of the furnace body, as in the third embodiment described above.
  • the spacer 55 that is intermittently disposed as in the first embodiment and the filler 56 that is filled therebetween are used as the expansion allowance portion 54.
  • the spacers 57 mixed with ceramic fibers are installed at a ratio of 100% as the expansion margin 54. According to the present embodiment as described above, the same effect as that of the first embodiment described above can be obtained also in the lining 5 having the expansion margin portion 54 that is continuous in the radial direction.
  • a furnace having a different structure (see FIG. 30) of the combustion chamber furnace body 2 constituting the hot stove 1 (see FIG. 24) described above is constructed.
  • the expansion margin portion 54 is formed between the heat insulating brick 52 and the refractory brick 53, whereas in this embodiment, the expansion space 54 expands between two layers of the heat insulating brick 52. It was set as the structure which has arrange
  • the expansion allowance portion 54 the entire expansion allowance portion 54 is configured by a spacer 57 as in the fourth embodiment described above. That is, the ratio of the spacer 55 in the expansion margin 54 is 100%.
  • the fire bricks 53 are stacked in two stages (reference numerals 1 and 2), and the heat insulating brick 52 is stacked in one stage (reference numeral 3) so as to be pressed against the fire bricks 53, and then the expansion allowance.
  • a spacer 57 reference numeral 4 as the portion 54 is installed, and the heat insulating bricks 52 (reference numeral 5) are stacked in one stage so as to be pressed against the spacer 57.
  • the fire bricks 53 are similarly stacked in two stages (symbols 6 and 7), and the heat insulating bricks 52 are stacked in one stage (symbol 8) so as to be pressed against them, and then a spacer 57 (symbol 9) is installed.
  • the heat insulating brick 52 (reference numeral 10) is stacked so as to be pressed.
  • castable (symbol 11) is injected.
  • the work efficiency when the heat insulating brick 52 is stacked is improved.
  • the present invention is not limited to the above-described embodiments, and modifications and the like within a scope in which the object of the present invention can be achieved are included in the present invention.
  • the application object of the present invention is not limited to the combustion chamber furnace body 2 and the heat storage chamber furnace body 3 of the hot air furnace 1 (see FIG. 24), but may be other types of hot air furnaces.
  • the present invention can be applied to a furnace wall of a combustion chamber section and a furnace wall of a heat storage chamber section of the same furnace body.
  • the two-layer insulating brick 52 in the lining 5 may be one layer or three or more layers, and the one-layer refractory brick 53 may be two or more layers.
  • these heat-insulating bricks 52 and refractory bricks 53 existing ones can be used as appropriate.
  • the castable 51 is required to have a free flow value indicating the fluidity of 200 to 300 mm because of injection, but these may be realized by adjusting the composition, and the composition and the like are existing. May be used as appropriate.
  • the spacer 55 can be used in various forms as described above, and it is desirable to adjust the material characteristics according to the form to be used and the conditions, dimensions, arrangement, etc. in the form. In particular, it is necessary to be able to adjust the rigidity of the spacer 55 so as to be a predetermined value (stiff enough to transmit a load when the castable 51 is injected).
  • the material of the spacer 55 is not limited to a synthetic resin material such as the above-mentioned rigid foamed polystyrene resin or other thermoplastic resin, but may be paper (such as cardboard).
  • the expansion margin part 54 having the spacer 55 is not limited to between the heat insulating brick 52 and the refractory brick 53 (such as the first embodiment described above) or between the refractory bricks 53 (such as the third embodiment described above). It may be between the insulating bricks 52 of the layer. In short, it is sufficient that the expansion allowance 54 is allowed to allow thermal expansion of the refractory brick 53, and the spacer 55 may be installed so as to prevent the expansion allowance function of the expansion allowance 54 at a stage before firing.
  • Example 1 In the construction of the external combustion type hot stove at the steelworks, the construction of the straight body of the regenerative furnace was carried out in the second embodiment described above (in which the checker brick 31 was added inside the first embodiment). Details and construction procedures of each part in this embodiment are as follows. In FIG. 32, first, the iron skin 4 of the combustion chamber furnace body 2 was installed, and then two layers of heat insulating bricks were constructed with a gap of 50 mm from the iron skin 4.
  • the expansion allowance portion 54 ceramic fibers were placed as fillers 56 at intervals between styrene foam spacers 55 of 30 mm square (thickness and height 30 mm) at a pitch of 460 mm in the height direction. Furthermore, the refractory brick 53 was constructed on the inner side of the expansion margin 54, the checker brick 31 was further constructed on the inner side, and then the castable 51 was injected between the iron skin 4 and the heat insulating brick 52. Construction by these procedures was repeated at a height of 1.2 m.
  • the L-shaped ruler 4A is installed in the iron skin 4 at 16 locations in the circumferential direction, and the position of the inner side surface of the heat insulating brick 52 from the core 58 is set to the L shape.
  • the ruler 4A was marked and connected to the inner surface of the lower heat-insulating brick 52 already loaded from that position by the water thread 4B, and the heat-insulating brick 52 was installed according to the water thread 4B.
  • FIG. Castable injection is performed by applying approximately 100 kg (equivalent to a height of 250 mm) per site, and then repeating the same 100 kg injection at a position shaken 45 degrees from 8 locations in total, for a total of 5 laps (height 1250 mm).
  • Example 1 the construction period of the furnace was completed in 7 months, which took 8 months with the conventional construction method, and the construction period could be shortened by 1 month.
  • the present invention relates to a method for constructing a hot stove, and can be used as a method for constructing a hot stove for supplying hot air to a blast furnace.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
PCT/JP2014/065563 2013-08-06 2014-06-12 熱風炉の築炉方法 WO2015019704A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BR112016002453-2A BR112016002453B1 (pt) 2013-08-06 2014-06-12 método para a construção de um fogão de sopro a quente
KR1020167004327A KR101804829B1 (ko) 2013-08-06 2014-06-12 열풍로의 축로 방법
EP14835034.1A EP3031933B1 (en) 2013-08-06 2014-06-12 Hot-blast stove construction method
RU2016107751A RU2615383C1 (ru) 2013-08-06 2014-06-12 Способ изготовления воздухонагревателя горячего дутья
CN201480044054.6A CN105452491A (zh) 2013-08-06 2014-06-12 热风炉的筑炉方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-163520 2013-08-06
JP2013163520A JP5469774B1 (ja) 2013-08-06 2013-08-06 熱風炉の築炉方法

Publications (1)

Publication Number Publication Date
WO2015019704A1 true WO2015019704A1 (ja) 2015-02-12

Family

ID=50749759

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/065563 WO2015019704A1 (ja) 2013-08-06 2014-06-12 熱風炉の築炉方法

Country Status (8)

Country Link
EP (1) EP3031933B1 (ko)
JP (1) JP5469774B1 (ko)
KR (1) KR101804829B1 (ko)
CN (1) CN105452491A (ko)
BR (1) BR112016002453B1 (ko)
RU (1) RU2615383C1 (ko)
TW (1) TWI608210B (ko)
WO (1) WO2015019704A1 (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108193010A (zh) * 2018-03-09 2018-06-22 中冶京诚工程技术有限公司 热风管道的内衬砌筑结构和热风管道三岔口内衬砌筑结构
CN108759482A (zh) * 2018-07-10 2018-11-06 苏州新长光热能科技有限公司 具有多层分仓缝的炉衬结构及其浇注方法
CN110205143A (zh) * 2018-12-18 2019-09-06 西安华江环保科技股份有限公司 一种干熄焦用浇注砌筑混合结构用于炉体冷却段结构及方法
CN114807566A (zh) * 2022-05-05 2022-07-29 湖州学院 一种多功能井式无马弗热处理气氛炉

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6460664B2 (ja) * 2014-07-07 2019-01-30 新日鉄住金エンジニアリング株式会社 縦型窯炉の築炉方法およびガイドパネル
KR101574777B1 (ko) 2015-07-08 2015-12-04 동경중공업(주) 내화벽돌 라이너 유닛
CN107238079A (zh) * 2017-06-27 2017-10-10 河南省登封市光大耐火材料有限公司 一种抗热震的焚烧炉
JP6949683B2 (ja) * 2017-11-27 2021-10-13 株式会社Ｉｈｉポールワース 熱風炉
CN111649588A (zh) * 2020-05-19 2020-09-11 汤东阁 一种隔热耐火砖
CN112251556B (zh) * 2020-09-30 2022-06-21 广东韶钢松山股份有限公司 高炉热风炉炉箅子支柱设备性能恢复方法
KR20230090630A (ko) * 2021-12-15 2023-06-22 재단법인 포항산업과학연구원 열손실 저감 및 부식 저감 효과가 우수한 로 벽체

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5196707A (ja) * 1975-02-22 1976-08-25 Yokogatataikaentotaino naimenraininguhoho
JPS54115602A (en) * 1978-02-28 1979-09-08 Nippon Steel Corp Blocking method for gap made in lining wall of furnace
JPS5624007B2 (ko) 1977-10-07 1981-06-03
JPS56139608A (en) * 1980-03-31 1981-10-31 Nippon Kokan Kk <Nkk> Wall structure of hot stove
JPH08269514A (ja) 1995-03-30 1996-10-15 Kawasaki Steel Corp 熱風炉の壁レンガ積み構造
JP2009115444A (ja) 2007-10-15 2009-05-28 Kurosaki Harima Corp 吹付け装置及びそれに使用する吹付け材料

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3528647A (en) * 1968-12-13 1970-09-15 Koppers Co Inc Insulating structure for use between the steel shell and the internal refractory lining in a metallurgical furnace
JPS5941483B2 (ja) * 1980-07-25 1984-10-08 日本鋼管株式会社 高炉用熱風炉のライニング方法
NL9200134A (nl) * 1992-01-24 1993-08-16 Hoogovens Groep Bv Windverhitter met gegoten verbindingselementen en werkwijze voor het bouwen van een windverhitter.
NL9201838A (nl) * 1992-10-23 1994-05-16 Hoogovens Groep Bv Hetewindleiding.
JPH08239706A (ja) * 1995-02-28 1996-09-17 Kawasaki Steel Corp 熱風炉における壁レンガ積み構造
JP5065662B2 (ja) * 2005-12-15 2012-11-07 新日鉄エンジニアリング株式会社 高炉用保護一体カーボン質ブロックおよび高炉のカーボン質ブロックの築炉方法
JP4800830B2 (ja) * 2006-04-26 2011-10-26 新日鉄エンジニアリング株式会社 ステーブクーラーの炉内への取り付け工法
JP4808571B2 (ja) * 2006-08-31 2011-11-02 新日本製鐵株式会社 断熱煉瓦、断熱煉瓦の製造方法、及び耐火構造物
CN201626964U (zh) * 2010-04-01 2010-11-10 重庆钢铁(集团)有限责任公司 一种高炉上部炉身炉衬结构
CN102912050A (zh) * 2012-10-30 2013-02-06 鞍钢股份有限公司 一种高炉冬季大修冷却壁捣料压浆防冻方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5196707A (ja) * 1975-02-22 1976-08-25 Yokogatataikaentotaino naimenraininguhoho
JPS5624007B2 (ko) 1977-10-07 1981-06-03
JPS54115602A (en) * 1978-02-28 1979-09-08 Nippon Steel Corp Blocking method for gap made in lining wall of furnace
JPS56139608A (en) * 1980-03-31 1981-10-31 Nippon Kokan Kk <Nkk> Wall structure of hot stove
JPH08269514A (ja) 1995-03-30 1996-10-15 Kawasaki Steel Corp 熱風炉の壁レンガ積み構造
JP2009115444A (ja) 2007-10-15 2009-05-28 Kurosaki Harima Corp 吹付け装置及びそれに使用する吹付け材料

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108193010A (zh) * 2018-03-09 2018-06-22 中冶京诚工程技术有限公司 热风管道的内衬砌筑结构和热风管道三岔口内衬砌筑结构
CN108193010B (zh) * 2018-03-09 2023-04-28 中冶京诚工程技术有限公司 热风管道的内衬砌筑结构和热风管道三岔口内衬砌筑结构
CN108759482A (zh) * 2018-07-10 2018-11-06 苏州新长光热能科技有限公司 具有多层分仓缝的炉衬结构及其浇注方法
CN110205143A (zh) * 2018-12-18 2019-09-06 西安华江环保科技股份有限公司 一种干熄焦用浇注砌筑混合结构用于炉体冷却段结构及方法
CN110205143B (zh) * 2018-12-18 2023-11-17 西安华江环保科技股份有限公司 一种用于炉体冷却段结构的干熄焦用浇注砌筑混合结构及其制备方法
CN114807566A (zh) * 2022-05-05 2022-07-29 湖州学院 一种多功能井式无马弗热处理气氛炉
CN114807566B (zh) * 2022-05-05 2023-12-15 湖州学院 一种多功能井式无马弗热处理气氛炉

Also Published As

Publication number Publication date
EP3031933B1 (en) 2018-11-28
CN105452491A (zh) 2016-03-30
EP3031933A1 (en) 2016-06-15
TWI608210B (zh) 2017-12-11
EP3031933A4 (en) 2017-04-19
KR101804829B1 (ko) 2017-12-05
BR112016002453B1 (pt) 2020-12-01
RU2615383C1 (ru) 2017-04-04
TW201518666A (zh) 2015-05-16
JP2015030907A (ja) 2015-02-16
KR20160040594A (ko) 2016-04-14
JP5469774B1 (ja) 2014-04-16
BR112016002453A2 (pt) 2017-08-01

Similar Documents

Publication Publication Date Title
JP5469774B1 (ja) 熱風炉の築炉方法
JP6245202B2 (ja) レンガ構造体の補修方法及びコークス炉煙道の補修方法
KR101688832B1 (ko) 건축용 벽돌 및 이를 이용한 벽체 시공 방법
JP6322767B2 (ja) 改質燃焼排ガストンネル及びその耐火部材
JP5851404B2 (ja) 大迫天井構造
CN101746969B (zh) 石灰窑
JP5679511B2 (ja) 加熱炉
JP2010265605A (ja) 耐火被覆構造
JP2015059347A (ja) 柱梁構造
JP5040166B2 (ja) セグメントの製造方法
JP6844332B2 (ja) 室炉式コークス炉の炉頂部の築造方法、及び室炉式コークス炉の炉頂部構造
CN101746970B (zh) 用于石灰窑的耐火环
KR102449963B1 (ko) 일체형 자체 지지 복합 내화 부품 및 이를 제조하기 위한 방법
JP3163736U (ja) 水管保護用耐火物及び水管保護用壁構造体
JP2018017083A (ja) 接合構造
CN204629506U (zh) 焚烧炉的多层耐火隔热结构
CN108290313B (zh) 炕成型框及利用其的炕体制造方法
JP6875609B2 (ja) 大迫天井構造およびその製造方法
JP6221186B2 (ja) 水管保護用耐火物
JPS5910973B2 (ja) 熱風炉の壁構造
JP5393200B2 (ja) 合成梁及び建築物
KR102370603B1 (ko) 샌드위치 패널 및 샌드위치 패널을 이용한 벽체 시공 방법
CN219810271U (zh) 一种炉身砌筑结构
CN208805051U (zh) 窑炉烟囱用耐火砖
CN101545722A (zh) 具有薄壁热传导构造的耐火材料构件及制造方法和应用

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201480044054.6

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14835034

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112016002453

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 20167004327

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2014835034

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2016107751

Country of ref document: RU

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 112016002453

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20160203