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JP6789753B2 |
To provide a coke oven and a repairing method thereof for reducing downtime.This invention comprises: a manufacturing site setting step S1 for setting a manufacturing site A2 near by a constructing site A1; a new furnace body prefabricat...
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JP6788718B1 |
To provide a method for spraying and repairing a kiln, which can secure good operability and workability and shorten the working time when a general spraying lance is used without using a special repairing device. I will provide a. A ste...
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JP6790952B2 |
To provide a lining method of a refractory at a bottom part in a converter, which can suppress wear of the refractory due to impact of scrap without causing stress concentration on a bottom-blown tuyere in the converter having the tuyere...
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JP6778357B2 |
To provide a metal fusion furnace capable of preventing an inside refractory layer from deforming due to temperature difference, and capable of being prevented from damaged due to occurrence of a crack or the like.A metal fusion furnace ...
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JP6781384B2 |
To provide a lance for hot repair capable of uniformly cooling the whole and preventing deformation.A thermal spray lance 100 as a lance for hot repair comprises: an inner tube 10 in which a repair material H is circulated at the inside;...
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JP6775462B2 |
To provide an anchor brick having sufficient hot strength and preventing breakage even if used in a ceiling structure of a heating furnace, the furnace temperature of which reaches 1,300-1,400°C, and capable of being used for a long per...
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JP6777479B2 |
In a monolithic refractory, in terms of a proportion in 100 mass% of a refractory raw material having a grain size of 8 mm or smaller, an amount of Ca X Sr 1-X Al 2 O 4 (where, 0¤X¤0.5) is 0.5 mass% or more and 10 mass% or less, an...
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JP2020172430A |
To provide a brick with a sheet suitable for a cement rotary kiln, capable of suppressing erosion even when sulfur or the like is generated, capable of securing impact resistance while enabling simple construction, and having good stabil...
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JP6774313B2 |
To provide a technique of repairing a coke oven by which a wall body to be repaired can be reconstructed without much trouble.A wall body to be repaired is reconstructed by combining a remaining part 1 of a wall body to be repaired with ...
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JP6772311B2 |
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JP6772079B2 |
To provide a refractory mortar for refractory brick in a molten metal vessel or a secondary refining furnace, having enhanced water resistance, safety and storage property and enhanced adhesiveness with a refractory brick.There is provid...
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JP6771082B2 |
To provide a heat treatment furnace compact as a whole, by preventing driving means for opening and closing a door disposed on the heat treatment furnace from projecting in a height direction of the heat treatment furnace.A heat treatmen...
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JP6773147B2 |
To provide technology, when refractories are piles up and furnace construction is performed, capable of efficiently performing required operations, and capable of attaining the labor saving of the operations.A movable body device for fur...
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JP6774253B2 |
To shorten an operation stop time of a furnace in maintenance of a heat treatment furnace.In a scaffolding assembly method in a heat treatment furnace, a plurality of scaffolding beams J are inserted into a heat treatment furnace 1 from ...
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JP6768237B2 |
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JP6769225B2 |
To provide a method of removing the carbon on a furnace wall of the coking chamber; wherein the method can prevent from becoming an inappropriate carbon chamber by an adhesion state of the carbon during the operation of inserting carbon ...
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JP6763446B2 |
To provide a holding device for a shaped refractory for a coke oven which reliably holds by itself a shaped refractory for a coke oven having complex and various shapes.A holding device 4 for a shaped refractory for a coke oven of the pr...
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JP6763026B2 |
Glass furnace regenerators having opposed pairs of side and end walls formed of refractory blocks, wherein at last one of the side and end walls of the regenerator comprise an interlocking plurality of refractory blocks, and wherein the ...
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JP2020151765A |
To provide a method for applying heat to a molten metal pot that is, when a gap produced between the pot body of a molten metal pot, such as a molten iron pot and a ladle used in a steel making process, and a pot cover is shielded, and h...
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JP6760958B2 |
A lining for a metallurgical vessel is configured to have an engineered porosity. The lining contains a plurality of regions, each extending in a primary plane of the lining, each region having a differing value of total pore or perforat...
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JP6760808B2 |
To improve durability of a slag line by suppressing a horizontal joint opening of the slag line of a ladle.In a lining structure of bricks of a slag line of a ladle, bricks 4A, 4B are arranged so that horizontal joints 8A, 8B are not con...
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JP6758147B2 |
To provide a method of producing an alumina silica brick containing cordierite having improved creep resistance and sufficient thermal shock resistance as well.The method comprises: mixing a refractory raw material compound with an addit...
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JP6760650B2 |
To provide a nozzle attachment capable of objectively grasping a replacement time without being affected by an operator in order to inhibit or prevent an occurrence of tip ignition or back fire and deterioration of a physical property of...
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JP2020147964A |
To provide a block assembly which absorbs vibration by a simple method of just pouring compared with a conventional complicated bolting of blocks and which has a structure from which one piece of a block assembly does not disengage, and ...
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JP6756794B2 |
A spray material for hot and dry spray application with improved corrosion resistance, and a hot and dry spray application method with improved corrosion resistance. A hot and dry spray application method comprises pressure-feeding a mix...
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JP6753638B2 |
To provide a check door for a heating furnace, capable of being opened/closed without interfering a refractory material in a door body inner surface part and a check port peripheral part while keeping heat-resistant protection of a door ...
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JP6752027B2 |
To enhance durability of a chamotte brick.A chamotte brick is manufactured by using chamotte as a main raw material, adding water to the same and mixing and molding and then burning them. AlOof 34 to 48 mass% and SiOof 50 to 65 mass% are...
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JP6752074B2 |
To provide an aggregate for refractory which is less in sinter shrinkage even when used at a high temperature, has CaO 6AlO(CA6) as a crystal phase suppressing detachment or collapse, is porous and has adiabaticity.There is provided a CA...
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JP6754436B2 |
A refractory object may include a Cr2O3 content of at least about 80 wt. % of a total weight of the refractory object, an Al2O3 content of at least about 0.7 wt. % and not greater than about 10.0 wt. % of the total weight of the refracto...
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JP2020132487A |
To provide a production method of brick for lining of steel refining furnace sufficient in damage reduction even when a heat processing temperature is 300°C or lower.A production method of magnesia carbon brick for lining of steel refin...
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JP2020128320A |
To provide a magnesia-spinel refractory that can suppress hydration reaction, and can reduce tissue embrittlement to improve wear resistance.A magnesia-spinel refractory contains electromelted magnesia-spinel raw material 10-50 mass% hav...
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JP2020525744A |
It is a technical subject of the present invention to provide a multi-chamber type heater capable of efficiently performing a blank heating process while occupying a small installation space. The present invention is a multi-chamber type...
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JP6745968B1 |
To provide a drying device capable of quickly drying a refractory while avoiding the explosion of the refractory. A drying device 10-1 dries a refractory material 33. The drying device 10-1 is provided with a planar heater 14 extending i...
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JP6747953B2 |
To provide a method for cutting a coke oven wall with high cutting operation efficiency.There is provided a method for cutting a coke oven wall that includes jetting out cut powders from a nozzle of a sand blast apparatus to cut an oven ...
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JP6747520B2 |
The purpose of the present invention is to provide a refractory for siliconizing furnaces, which is suppressed in change of properties and embrittlement, and which has a long service life. A refractory for siliconizing furnaces, which co...
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JP2020125220A |
To provide a silicon nitride refractory for a blast furnace tuyere, which has improved spalling resistance and is excellent in flowability, and the texture of which can be elaborated.The composition of a silicon nitride casting material ...
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JP6742659B1 |
To easily construct a side wall portion and / or a ceiling portion of a structure. A method of constructing a side wall portion and / or a ceiling portion of a structure is an inner surface of a plate material 10 magnetically attracted b...
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JP6744794B2 |
To provide a cement mortar of refractory brick for blast furnace tuyere and a blast furnace tuyere structure capable of achieving both improvement of alkali resistance and improvement of adhesive strength of the cement mortar.There is pr...
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JP6743621B2 |
To provide a blast furnace operation method capable of quickly restoring deteriorated gas permeability of burden after the restarting of the blast furnace operation resulting from a repairing work at blowing-stop time, in which a monolit...
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JP6742579B2 |
To provide a construction method for a molten metal container jointly using a dolomite-containing brick and a castable refractory as lining refractories, capable of obtaining a molten metal container having an excellent container service...
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JP6740827B2 |
To automatically detect vertical cracks generated on a furnace wall surface from images of the furnace wall surface of a coke oven chamber without removing carbon clogged on the furnace wall of the coke over chamber.A high accuracy detec...
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JP2020122076A |
To provide a technology related to a resin composition for unshaped refractory having improved adhesive strength to a high-temperature adhesion object.There is provided a resin composition for unshaped refractory. The resin composition f...
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JP6739763B2 |
To provide a door opening/closing mechanism in a rotary heat treatment furnace in which a motion interference region between a robot arm for charging and taking-out a workpiece and a door is narrowed so that a time necessary for charging...
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JP2020118446A |
To provide a thermal treatment device which can perform thermal treatment to a processed object at a higher temperature and more securely maintain components of a gas in a space, in which the processed object is disposed, to desired valu...
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JP2020118439A |
To suitably support a heat insulation material arranged at the inside of a furnace when carrier rollers pass through the heat insulation material.A heat treatment furnace heat-treats an object to be treated. The heat treatment furnace co...
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JP6735064B2 |
To provide a conductive hot repairing material for a DC electric furnace preventing deterioration of working environment due to smoke generation during use or the like, having conductivity of a refractory itself and further high in durab...
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JP6725459B2 |
To provide a molten metal furnace capable of being reduced in weight, further, easy in maintenance and capable of reducing a furnace repair construction period.Provided is a holding furnace 1 comprising: a holding chamber 2 holding a mol...
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JP6728189B2 |
Methods and apparatus for constructing refractory structures, e.g., glass furnace regenerator structures and/or glass furnace structures having walls formed of refractory block and buck stays externally supporting the walls are provided....
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JP2020520875A |
A refractory article is described which comprises a refractory and a refractory coating layer deposited on its surface, wherein the refractory coating layer comprises silica, alumina, boron oxide, and calcium oxide. The refractory articl...
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JP6724703B2 |
To shorten the construction period of a coke oven and to reduce the construction cost of the same while maintaining construction accuracy.A construction method of a coak oven comprises: installing an oven fastening hardware 6 and a prote...
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