A zirconia-carbon-containing refractory includes aggregate grains, a carbon bond formed between the aggregate grains, 80% by mass or more of a Zr02 component and a carbonaceous material, in which the total volume of open pores and the carbonaceous material in the structure of the refractory    is in the range of 25...

The present invention makes it possible to prevent ignition due to friction between a feedstock powder and a delivery tube. This thermal spraying device is provided with the following: a storing means (20) that stores the feedstock powder (10) and has a payout port (21) that pays out said feedstock powder; an ejecto...

Provided are a quick setting agent having excellent workability with which it is possible to obtain good quick setting properties and curability a method for producing the same a wet spray material including the same and a wet spray material construction method. A quick setting agent for a wet spray material of a mo...

23225252The present invention provides for long term prevention of hydration (slaking) of CaO during a production stage during storage and during an operation stage in a refractory comprising a CaO component. That is this refractory comprises refractory particles including a CaO component and refractory particles in...

It is intended to uniform and straighten a molten steel stream flowing out of a discharge port of an immersion nozzle, and thus suppress mold powder entrapment in the vicinity of the immersion nozzle. The immersion nozzle comprises a tubular-shaped straight nozzle body formed to extend in a vertical longitudinal ...

In a insert-type continuous casting nozzle comprising a highly functional layer formed to have a high corrosion resistance, a high anti-attachment capability, etc., and provided to define an inner bore thereof, the present invention is directed to providing a refractory material (mortar) for an intermediate layer...

The present invention provides a flat immersion nozzle wherein the immersion nozzle stabilizes molten steel discharge flow and stabilizes the melt surface inside a mold i.e. reduces fluctuation thereof. In the present invention the immersion nozzle has a flat shape in which the width Wn of the inner hole is greater ...

The present invention provides an SN plate capable of increasing in size using a highly erosion-resistant, high thermal expansion, flame-resistant material. In this invention, erosion resistance is increased by adding aluminum, and a specific flame resistant material (1a) that has a thermal expansion rate at 1,500ºC...

Provided is a molten metal discharge nozzle which has a bore configuration capable of creating a low-energy loss and smooth (stabilized) molten metal flow to suppress the occurrence of an adhesion matter. In the molten metal discharge nozzle, a radius r(0) of an upper end (12) of a bore (11) thereof is 1.5 times or ...

The invention makes it possible to ensure mixing of a silica sol and a refractory material and to accelerate a curing reaction when a dry blowing construction method is used and consequently achieves a refractory for blowing of excellent durability. This monolithic refractory for dry blowing includes a refractory ma...

Disclosed is a continuous casting nozzle, which comprises a layer formed to have high functions, such as high corrosion resistance and high anti-deposition capability, and disposed on the side of an inner bore thereof to serve as an inner bore- side layer, so as to enhance durability, wherein the continuous casti...

Disclosed is a method of producing a plate brick, which comprises: adding an organic binder to a refractory raw material mixture containing aluminum and/or an aluminum alloy; kneading them; forming the kneaded mixture into a shaped body; and burning the shaped body in a nitrogen gas atmosphere at a temperature of...

The present invention addresses the problem of suppressing the ignition and dusting of a thermal spraying material for use in thermite spraying and improving the adhesiveness of the thermal spraying material. A thermal spraying material which comprises a refractory material powder and metallic Si powder and which is...

The present invention improves the density (reduces the porosity) of one layer in a magnesia carbon brick and provides a magnesia carbon brick having higher durability than ever before. The magnesia carbon brick according to the present invention comprises a magnesia raw material and graphite wherein the graphite is...

In a composite sliding nozzle plate in which a cylindrical body is attached to a sliding nozzle plate main body part, the present invention can prevent slippage of the cylindrical body and the entrance of base metal into the joint part between the cylindrical body and the sliding nozzle plate main body part; therefo...

The present invention addresses the problem of suppressing the breakdown of a refractory containing metal aluminium. This refractory for steel casting contains 1 10 mass% inclusive of free carbon and 1 15 mass% inclusive of metal aluminium the balance comprising a refractory material including a metal oxide and is c...

[OBJECT] In an operation of continuous casting of steel grade such as aluminum-killed steel where a nozzle clogging phenomenon is particularly likely to occur, it is intended to prevent adhesion of inclusions (typically, Al2O3) on a nozzle used in the casting operation, and clogging of the nozzle due to the incl...

The present invention further improves corrosion resistance and slag infiltration resistance of a castable refractory that comprises a spinel containing alumina cement and reduces cracks and peelings thereof. That is the present invention provides a castable refractory in which an amount of CaO contained in an alumi...

Provided is a castable refractory which does not tend to generate cracks or explosions when drying. This castable refractory comprising an organic fiber and constructed by adding water is characterized in that water content of the organic fiber is less than 3 mass% and in that a polyethylene fiber in which oil is at...

An immersion nozzle 10 for continuous casting which reduces the drift of molten steel flowing from the outlets 14 of the nozzle 10 and reduces the level fluctuation at the molten steel surface and which is easy to manufacture. The immersion nozzle 10 includes: a tubular body 11 with a bottom 15, the tubular body 11 ...

In order to reduce variation in strength of refractories which comprise, in the refractory raw material, scale-like flake powder (aluminum flakes) composed of aluminum and/or aluminum alloy, and which are used in an industrial kiln, in particular, refractories used in iron making and steel making processes in the ir...

Provided is an aluminum oxycarbide composition production method capable of increasing a yield of Al4O4C while reducing a content rate of Al4C3 and achieving high productivity, and an aluminum oxycarbide composition. The method comprises: preparing a blend substantially consisting of a carbon- raw material having...

The present invention provides an aluminum oxycarbide composition in which the Al4O4C can be inhibited from oxidizing during use and the effect of the Al4O4C can be maintained for a long period. This aluminum oxycarbide composition has crystals of Al4O4C. When any cross-section of the aluminum oxycarbide composition...

The present invention provides a thermal spray material with which it is possible during thermal spraying treatment for repairing the furnace wall of an industrial kiln or performing another such process to maintain excellent adhesion to the treated surface after repeated treatment preventing peeling of the treated ...

The present invention relates to a plate fixing structure and a plate used in the fixing structure. According to the plate fixing structure of the present invention, alignment of a fitting recessed portion and a fitting projecting portion can be easily achieved through a recess-projection fitting method for performi...

A sliding nozzle device which automatically performs a series of operations of loading and unloading pressure between plates as well as opening and closing a slide frame; maintains the pressure without additional operations; and operates at full stroke during molten steel flow control. An auxiliary plate-exchanging ...

It is intended to provide a taphole mix capable of forming SiC bonds with minimum of an excess and a deficiency in components thereof, and excellent in drillability. A fine particle fraction having a particle diameter of 75 μm or less is comprised of three components consisting of a silicon nitride-based material...

A method of continuous casting of aluminium-ki1led steel using a continuous casting nozzle unit which is arranged of a refractory material containing CaO on a face of an inner hole of the continuous casting nozzle unit and has a function of reducing large-size inclusions more than 50?m in slabs, wherein said continu...

The present invention provides a stopper structure capable of preventing loosening of a shaft rod during use, and gas leakage which is likely to occur when the stopper structure is designed to allow gas to pass therethrough. The shaft rod 1 is adapted to be mounted in a mounting hole 2a of a refractory stopper 2,...

It is intended to develop a technique of pressing and fixing a plate by a uniform force to suppress the occurrence of a crack around a nozzle hole of the plate during use, and provide a sliding nozzle device capable of improving durability of the plate, and a plate for use in the sliding nozzle device. The slidin...

Provided is a carbon-containing refractory which can improve thermal shock resistance, abrasion resistance and corrosion resistance without the reduction of the resistance to oxidation. A carbon-containing refractory material which is composed of a refractory aggregate, a carbonaceous material and a carbon bond for ...

The present invention provides a plate brick having a low amount of generation of smoke and a gas with a pungent odor during use, and exhibiting high durability. A plate brick of the present invention is obtained by: adding an organic binder to a refractory raw material mixture containing 0.5 to 20 mass% of alumi...

A method of controlling a sliding nozzle device 10 and a plate 13 used therefor, even if operational conditions are changed, automatically optimizing sliding conditions of the device 10, increasing a life of the plate 13, and reducing a corrosion rate and a stroke length of the plate 13. When the device 10 is contro...

Disclosed is an upper nozzle/plate integral anit comprising an upper nozzle and an upper plate integrated together, which is capable of being easily split into the upper nozzle and the upper plate after use, while adequately maintaining a thickness of a joint between the upper nozzle and the upper plate during us...

Provided is a sliding nozzle device which is free of the occurrence of forgetting to set up and release a stopper for preventing release of a surface pressure. Surface-pressure applying means comprises a pair of spring casings 30 mounted to respective ones of opposite lateral portions of a fixed metal frame 18, a...

Provided is a molten metal discharge nozzle capable of suppressing turbulence in a molten metal stream passing through an inner bore thereof, with a simple structure. A cross-sectional shape of a wall surface of the inner bore, taken along an axis of the inner bore, comprises a part or an entirety of a curved lin...

It is intended to provide a continuous-casting-nozzle support apparatus capable of enhancing sealing performance between a continuous casting nozzle and an SN device. The continuous-casting-nozzle support apparatus comprises: a holding mechanism 40 disposed to extend from a stationary column 10 fixed onto a suppo...

Disclosed is a refractory containing graphite that exhibits a stable service life by having the characteristics of small variations in strength and making crack progression difficult. Specifically disclosed is a graphite-containing refractory graphite that is a refractory containing thick flake graphite in which thi...

Disclosed is anti-alumina-buildup refractories for casting nozzles, which comprises a refractory aggregate including 20 mass% or more of CaO component, and 10 mass % or more of clinker particles each containing CaO as a mineral phase, on the basis of 100 mass % of the entire composition. At least a part of the su...

Provided is an immersion nozzle replacement method performed while pushing out a used immersion nozzle with a new immersion nozzle wherein leakage of molten steel during replacement is minimized a standard joint sealer 30 can be used on a joint surface a recessed section is provided in an upper surface 14 of the new...

The purpose of the present invention is to improve the sealing ability of a nozzle structure for discharging molten steel which comprises a plurality of refractory members and which has joint portions. This nozzle structure for discharging molten steel is provided with at one or more locations joint portions that ea...

Provided is a monolithic refractory which rarely deteriorates in strength at a high temperature range of, for example, over 1,000°C irrespective of an organic binder being used as a bonding agent. The monolithic refractory of the present invention comprises an organic binder, and fireproof powder comprising a rough ...

The present invention provides a refractory which combines excellent corrosion resistance and excellent thermal shock resistance, though it was difficult for a conventional refractory to combine both. Further, the present invention provides a nozzle for casting, said nozzle using the refractory. A refractory which c...

The present invention is directed to creating a less-energy loss or smooth (constant) molten steel flow with a focus on a configuration of a bore of an upper nozzle, so as to provide an upper nozzle formed with a bore having a configuration capable of to suppress deposit formation. For this purpose, in an upper nozz...

The present invention is a precast block structure obtained by integrating a metal plate and a precast block wherein the occurrence of cracking in the precast block during the manufacture or use thereof is suppressed. Thus in the present invention a precast block structure A comprises a metal plate 1 capable of cove...

The present invention is a heat insulating structure for covering by means of a plurality of precast blocks a metallic object to be covered wherein the generation of gaps in an expansion allowance provided between adjacent precast blocks is suppressed during usage. The present invention thus provides a heat insulati...

[Technical Problem] To provide a mud material that can suppress the difficulty in opening a hole with the taphole lower portion of a blast furnace being protected. [Solution to Problem] A mud material for filling the taphole of a blast furnace containing a refractory raw material and a binder, the mud material cont...

Provided is a gunning mass that can improve a seal of a gap in a kiln. To this end in the gunning mass which is applied to a kiln the formulation and composition are adjusted so that when heated in an environment of an ambient temperature of 80 to 500°C there is an accompanying expansion of volume of 1.3 times or mo...

4423442344444444The objective of the present invention is to improve durability of a castable refractory in particular a refractory which is used for long periods of time or repeatedly such as a casting nozzle or an SN plate. This castable refractory is a castable refractory which includes 15 to 60 mass% of AlOC and...

Disclosed is a method of producing an immersion nozzle for continuous casting, which comprises integrally molding a first zirconia-graphite compound applied to a powder-line portion of the nozzle, and a second compound applied to at least an inner hole portion of the nozzle. The second compound includes 1...

A method of continuous casting of molten steel for sheet metal to reduce themount of large size indutions in catted slabs using a continuous casting nozzleapplied of a refractory material containing CaO and MgO based clinker havingCaO as a mineral phase at least at a portion to be in contac...

Provided is a zirconia-mullite refractory raw material which is less likely to undergo alternation and micro structural degradation under high-temperature conditions, and low in thermal expansion rate, so as to have thermal shock resistance and corrosion resistance. The zirconia-mullite refractory raw material co...

The present invention provides a thermal spraying device with which ignition can be prevented when a large amount of spraying occurs. This thermal spraying device is provided with multiple dispensing units that dispense a raw material powder with each dispensing unit being connected to a mixture generation means th...

The present invention provides a magnesia carbon brick which does not contain graphite and has superior spalling resistance and corrosion resistance and a method for producing the magnesia carbon brick. The magnesia carbon brick according to the present invention contains a total of 0.1-2.0 mass% of pitch and/or car...

The purpose of the present invention is to provide a brick for blast furnace hearths which has excellent hydration resistance and improved hot metal resistance and slag resistance. According to one aspect of the present invention a brick for blast furnace hearths is provided which contains 47 to 92% by mass of corun...

The purpose of the present invention is to prevent a gas leak in a gas introduction hole socket section. In the present invention, a flange 3 is provided between an outer end section and an inner end section of a socket 20 and the surface on the inner end section side of the flange 3 is configured to adhere to a ref...

The purpose of the present invention is to enhance instantaneous adhesion at spraying of a spray material for hot repair to a surface to be repaired. This spray material for hot repair contains 65% by mass to 95% by mass of a magnesia-based raw material and 0.5% by mass to 10% by mass of a phenol resin, the content ...

[Problem] To reduce the construction period associated with the use of an unshaped refractory applied to the lining of a waste treatment furnace or a coal gasification furnace. [Solution] Provided is a chromium-free patching refractory which is applied to the lining of a waste treatment furnace or a coal gasificatio...

The objective of the present invention is to retain the hot sealing properties of a shaped joint material while suppressing igniting or smoke generation from the combustible material in the shaped joint material. The shaped joint material is obtained by adding a ratio of 26-50% by mass of an organic material additiv...

The objective of the present invention is to stabilize a discharge flow of molten steel and stabilize the melt surface inside a mold, that is, to reduce fluctuation thereof, in a flat immersion nozzle. In the present invention, lateral protrusion parts 1 protruding in the thickness direction are provided in the wall...

The present invention provides a device for opening/closing which can reliably open/close the opening/closing part of a sliding nozzle device to a predetermined position using a robot arm. The device for opening/closing according to the present invention is configured by providing a hand end part 2 and a force senso...

The present invention addresses the problem of providing an attachment device with which a driving device in a hanging state can be smoothly attached to a sliding nozzle device, using a manipulator. The present invention provides an attachment device 5 that is attached to an end of a manipulator 4 and that is used t...

The present invention provides a ZrO2-CaO-C refractory material that has prominent consumption resistance and suppressed self-fluxing properties, i.e., is corrosion-resistant while also being capable of sustaining high adhesion resistance over extended periods of time. The present invention pertains to: a CaO-ZrO2 c...

To provide a thermal spray device capable of preventing a backflow of hot air to a hopper and recognizing the hopper being empty. A thermal spray device that forms a refractory composition by injecting and burning a mixture obtained by mixing a raw material powder 10 containing a refractory powder and a combustible...

To provide a thermal spray device capable of reliably stopping feeding of a carrier gas even when a lid body is lifted only a little as in clogging of a rubber hose, or the like. A vertical transfer pipe 70 that transfers a raw material powder 10 from a discharge port 22 to an ejector 30 is provided with a through...

The present invention provides a refractory material which does not impregnate a pitch or the like, and has high corrosion resistance and thermal shock resistance as compared with an impregnated product such as a pitch. A refractory material that does not impregnate a tar or pitch, according to the present invention...

The present invention provides a plate and a plate holding device and a plate holding method for allowing an operation of mounting a plate to a plate accommodation metal frame of a sliding nozzle device to be easily performed. According to the present invention when a plate 2 is held by engaging a held part of the p...

The present invention provides a mud material with which adhesiveness can be improved while ensuring the wear resistance and corrosion resistance required of mud materials. The fireproofing material of this mud material contains 10 mass% to 50 mass% of agalmatolite in which the content of the mineral composition mus...

The purpose of the present invention is to suppress or prevent destruction of a casting nozzle body. A casting nozzle comprises a nozzle body 3 of which an upper end portion is enclosed by means of a metal case 4, wherein a gas pool 2 is provided between an outer peripheral surface of the upper end portion of the no...

The purpose of the present invention is to improve adhesion, adhesiveness, and corrosion resistance in a hot dry spraying material and a method for hot dry spraying work. To this end, the present invention is a method for hot dry spraying work in which a formulation comprising a refractory material and a binder is p...

Provided is a method for the spray application of a monolithic refractory in which application water is injected from a water injector 7, which is provided to a material-conveying tube 5 which extends from a material-supplying unit 1 to a distal-end spray nozzle 4, into a spray material conveyed inside the material-...

The present invention provides a sliding nozzle device having sliding metal frame holding parts provided on both of the long sides of a fixed metal frame so as to be openable and closeable, wherein the sliding metal frame holding parts on both sides can be simultaneously opened/closed with a simple operation. In thi...

In order to improve the efficiency of work involved in lining bricks without increasing the manufacturing cost of the bricks being used in a lining method for bricks used to construct a side wall of a kiln, multiple stages of bricks are stacked on the inner side portion of a kiln having regions which have a substant...

The present invention provides a tuyere setting structure in which no gap is generated between a nozzle or plug set at the bottom of a molten metal container and a plate or the like located below the nozzle or plug, and between the nozzle or plug and a tuyere located above or on the outer peripheral side of the nozz...

The purpose of the present invention is to ensure stable thermal insulation properties in a monolithic refractory comprising a silicon carbide raw material. Relative to 100 mass% of a refractory raw material, this monolithic refractory comprises: 20 to 50 mass% of a silicon carbide raw material having a particle siz...

The purpose of the present invention is to improve the filling property of a hot filling material. The present invention provides a hot filling material comprising a binder and water both added to 100% by mass of a refractory raw material, wherein a basic raw material having a particle diameter of 1 mm or more and a...

The present invention provides a plate holding device, a plate removing device, a plate mounting device, and a plate attaching/detaching device with which it is possible to reliably attach and detach a plate to a plate-housing metal frame. According to an aspect of the present invention, a plate holding device 101 i...

[Problem] Provided is a refractory lining repairing method capable of allowing a refractory lining after being subjected to repairing to become less likely to wear. [Solution] The method is designed to repair a refractory lining 2 on an inner side of a shell 11 of a ladle or a trough 1. The method comprises:...

The purpose of the present invention is to increase the precision with which the back pressure in the vicinity of a gas discharge section in a continuous casting stopper is ascertained and managed. A continuous casting stopper comprising a vertically-oriented cavity 2 for conveying gas in the center portion thereof ...

An immersion nozzle exchanging apparatus and an upper nozzle capable of preventing damage to a plate of the upper nozzle are provided. An immersion nozzle exchanging apparatus 1 is mounted on a lower portion of a molten steel outlet 101 of a tundish 100. The immersion nozzle exchanging apparatus 1 includes a supp...

To reduce refractory mortar that remains in a sliding nozzle device at the time of mounting an upper nozzle. In a sliding nozzle device 3 that is mounted on a bottom surface of a molten metal container 2 having an upper nozzle insertion port at a bottom part, and includes an upper plate storage part 41 and a throug...

To provide a sliding nozzle device that can enable easy replacement of stoppers for a drive device. A sliding nozzle device 1 includes: a fixed metal frame 21; a slide metal frame 23 that is disposed to be slidable with respect to the fixed metal frame 21; a drive device 3 that causes the slide metal frame 23 to sl...

An immersion nozzle exchanging apparatus capable of reducing adhesion of splashes to guide rails is provided. An immersion nozzle exchanging apparatus 1 includes a pair of guide rails 2 located in parallel so as to face each other, and includes at least one of an inlet splash adhesion prevention cover 3 capable of...

To reduce damage to a lower nozzle holder for fixing a lower nozzle to a sliding nozzle device. A splash adhesion prevention cover 1 covering a lower nozzle holder 6 is located on the lower side of the lower nozzle holder.

The present invention addresses the problem of improving corrosion resistance in a hot dry spraying material and a method for hot dry spraying work. The present invention is a method for hot dry spraying work, in which a blend material comprising a refractory material and a binder is pressure-fed through a pipe towa...

The present invention provides a nozzle and a structure of the nozzle and a stopper that make it possible to prevent irregular fracture from a gas discharge port or a gas passage path communicating therewith as a starting point, or to prevent the originated fraction from expanding in a nozzle or a stopper having a g...

This invention provides a thermal spraying method with which it is possible to control decreases in adhesion, wear in delivery pipes, and occurrences of flashback when performing a large volume injection. This thermal spraying method is for forming a refractory composition by injecting and combusting a mixture in wh...

The present invention addresses the problem of enabling efficient transmission of propulsive force of a drive unit to a slide metal frame in a sliding nozzle device in which the drive unit can be attached to and detached from the slide metal frame. In the sliding nozzle device according to the present invention, a c...

Provided is a taphole mix capable of suppressing hole enlargement during tapping and ensuring hole depth. [Solution] The taphole mix contains at least one of an alumina-zirconia raw material and a zirconia-mullite raw material in a total amount of 2 % by mass to 30 % by mass, in 100 % by mass of a refractory ra...

The present invention provides a heat-insulating block structure for skid posts, by which rotation of constructed heat-insulating blocks can be suppressed, and a construction method thereof. This heat-insulating block structure for a skid post is constructed by assembling three kinds of heat-insulating blocks, namel...

The present invention provides an insulation block for a skid pipe that is not easily damaged when installed around a skid pipe, and a method for constructing the insulation block. An insulation block (3) for a skid pipe according to the present invention includes a through-hole (35) penetrating from an outer circum...

The present invention provides an integrated tuyere for a converter, in which one double metal tube and a tuyere refractory are integrated, said integrated tuyere having a simple structure and suppressing deformation of the double metal tube upon installation in a converter and during handling and a reduction in the...

The objective of the present invention is to prevent penetration of molten steel into a gas pool in a bubbling plate having a structure in which a ring is disposed in an inner bore of a plate main body. In a bubbling plate according to the present invention, a ring-shaped component (ring 3) having a gas permeation f...

[Problem] Provided is a taphole mix capable of suppressing the occurrence of a blow-back phenomenon. [Solution] The taphole mix is prepared by adding a binder to a refractory material and kneading a resulting mixture, wherein the binder comprises at least tar, and the refractory material comprises carbon black....

The purpose of the present invention is to suppress adhesion of an intrusive element near a fitting section of a stopper, and to prevent a tip region of the stopper from cracking or delaminating due to a lack of strength. To achieve the foregoing, the present invention provides a stopper 1 for continuous casting tha...

The present invention addresses the problem of providing a sliding nozzle apparatus whereby a maintenance robot can be caused to reliably and accurately recognize the position of the sliding nozzle apparatus. The gist of the present invention resides in: a sliding nozzle apparatus 3 comprising a fixed metal frame 32...

The present invention provides a submerged nozzle replacement apparatus capable of quickly and easily moving a blank plate to a waiting position. A submerged nozzle replacement apparatus 1 of the present invention comprises: a pressing unit that presses a lower surface of a flange portion of a submerged nozzle 200; ...

The present invention suppresses the degradation of ejector effect in a spraying apparatus equipped with an ejector and can ensure a prescribed powder emission quantity. A spraying apparatus 1 according to the present invention is provided with: a storage means 20 for storing a powder 10; an ejector 30; a transporta...

[Problem] It is intended to improve a taphole length in a taphole mix using tar as a binder. [Solution] Provided is a taphole mix prepared by adding tar to a refractory material and kneading a resulting mixture, wherein the additive amount of the tar is 15 mass% to 25 mass% with respect to and in addition to 10...

The present invention provides a sliding nozzle apparatus in which components constituting the sliding nozzle apparatus are less likely to get damaged even in a case where a surface pressure is applied while no refractory plate is mounted thereon. The sliding nozzle apparatus according to the present invention compr...

Provided is a sliding nozzle apparatus capable of preventing a slide metal frame from falling when the slide metal frame is opened at a highest position which is a position where the slide metal frame is moved to the uppermost side. A sliding nozzle apparatus S of the present invention comprises a fixed metal frame ...

The present invention improves the corrosion resistance and thermal shock resistance of a refractory product for use in continuous casting and a refractory product member. The refractory product according to the present invention contains a free carbon component in an amount of 10% by mass to 30% by mass inclusive, ...

The present invention improves the corrosion resistance and thermal shock resistance of a refractory product for use in continuous casting of a zirconia-carbonaceous material and a refractory product member. The refractory product according to the present invention contains a free carbon component in an amount of 8%...

The purpose of the present invention is to achieve an immersion nozzle that is applied to an immersion nozzle exchange device, and that satisfies both suppression of crack occurrence in the neck part and suppression of subduction occurrence of the immersion nozzle. An immersion nozzle 10 according to the present inv...

The present invention provides a continuous casting nozzle with which it is possible to mitigate concentrations of stress in the neck part and inhibit slippage. The present invention is a continuous casting nozzle 1 including a nozzle body 2 made of a refractory material having, in the vertical direction, an interna...

The present invention provides: a wet spray material for firing furnaces, the wet spray material being capable of shortening the time required for a firing furnace to be in an operable state after the installation of the wet spray material on an installation object surface of the firing surface; and a method for ins...

The present invention suppresses reduction in the discharge rate of gas discharged from a through hole in an external insertion type continuous casting nozzle that is to be used under the condition of being fitted into a stopper. A continuous casting nozzle according to the present invention is an external insertion...

The present invention provides a magnesia carbon brick having excellent spalling resistance even with a low graphite content and also having excellent corrosion resistance. The present invention pertains to a production method for a magnesia carbon brick the production method comprising: adding pitch tar which is ...

The present invention provides a method for manufacturing an unfired basic brick having excellent corrosion resistance. In the present invention, water is added to a refractory starting material blend which contains a total of 0.2-30 mass% inclusive of magnesia having a particle size of less than 75 µm and/or magnes...