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1. 发明专利

JPH03183718A BRICK LAYING STRUCTURE FOR MOLTEN IRON RECEIVING HOLE IN TORPEDO CAR FOR PRE-TREATING MOLTEN IRON 失效
公开(公告)号：JPH03183718A
公开(公告)日：1991-08-09
申请号：JP32163289
申请日：1989-12-11
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： TAKANO KAZUHISA , KONDO MASARU , SHIBATA KATSUUMI , KONO KOJI , ABE TETSUYA
IPC分类号： C21C1/06
摘要： PURPOSE:To prevent erosion of refractory in a molten iron receiving hole at high temp. and to improve working rate of a torpedo car by forming the molten iron receiving hole in the oxygen top-blowing type torpedo car of the specific monolithic refractory and also setting receiving brick between bottom of the monolithic refractory inner lining refractory brick in he torpedo car body at the lower part thereof. CONSTITUTION:The molten metal tapped off from a blast furnace is received into the torpedo car, and in order to uniformize the quality and prevent temp. lowering of the molten iron at the time of executing pre-refining of desiliconization, etc., the oxygen top blowing is execute. By this method, in order to prevent the erosion of molten iron receiving hole 4 at high temp., the inner lining 3 of Al2O3-SiC-C series or high alumina series refractory brick is arranged at inside of the iron shell 2 in the torpedo car body 1 and the lining at the molten iron receiving hole 4 part is constituted of the receiving brick part 5 having inner diameter d1 larger than inner diameter d2 of the lining 3 and further, on the brick part 5 the same refractory brick 7 of Al2O3-SiC-C series, etc., and monolithic refractory 8 of high refractoriness and high erosion resistance of Al2O3-MgO series or Al2O3-SiC-C series are provided. The torpedo car can be used under excellent working rate without generating erosion of the refractory material in the molten iron receiving hole 4.

2. 发明专利

JPH08170882A METHOD FOR MAKING LINING AT SPECIFIED POSITION, USING COLORED BRICK 失效
公开(公告)号：JPH08170882A
公开(公告)日：1996-07-02
申请号：JP31353194
申请日：1994-12-16
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： FUKUNAGA TETSUO , HORI MITSUJI , KONO TAKESHI , KONO KOJI
IPC分类号： F27D1/16
摘要： PURPOSE: To obtain a method for surely making lining at specified positions in a furnace, using at least one kind of bricks, which are made of a specified material, in the case where the lining is made using plural kinds of the bricks which have color tones being hard to discriminate between them. CONSTITUTION: When lining is continuously made using bricks during worker's circumferential movement in a furnace, like the lining of a converter or a metal mixer, specified brick are each formed by applying different pigments, for which color tones, such as yellow, blue, red, white, green, etc., are changed by respective materials, to the whole surfaces thereof or to only the surfaces visible from inside the furnace in the time of its construction, by means of dipping, spraying, brushing, rolling or electrostatic coating. In this way, the respective materials can be visually recognized without difficulty.

3. 发明专利

JPH06116049A SPINEL MONOLITHIC REFRACTORY 失效
公开(公告)号：JPH06116049A
公开(公告)日：1994-04-26
申请号：JP29395492
申请日：1992-10-08
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： TAKEUCHI KAZUHIKO , NAKAO ATSUSHI , YAMADA JUNJI , KONO KOJI , EGAMI JUN
IPC分类号： C04B35/66
摘要： PURPOSE:To control rate of linear change after sintering to 0 to +2% regardless of the ratio of magnesia and alumina to spinel in a raw material by restricting the particle diameter of alumina in a monolithic refractory containing magnesia, alumina and spinel as a main component. CONSTITUTION:This monolithic refractory contains (A) 100 pts.wt. sum consisting of 5-95 pts.wt. magnesia and 95-5 pts.wt. alumina with a small quantity of a binder and a slaking preventive by external multiplication or (B) 100 pts.wt. sum consisting of 5-95 pts.wt. magnesia, 95-5 pts.wt. alumina and 0.1-90 pts.wt. spinel with a small quantity of the binder and the slaking preventive by external multiplication, where the alumina used for both (A) and (B) contains 3-10 pts.wt. alumina having

4. 发明专利

JPH08169782A FIREBRICK TREATED SO AS TO INHIBIT SLIP AND DUST GENERATION AND ITS PRODUCTION 失效
公开(公告)号：JPH08169782A
公开(公告)日：1996-07-02
申请号：JP31352994
申请日：1994-12-16
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： FUKUNAGA TETSUO , HORI MITSUJI , KONO TAKESHI , KONO KOJI
IPC分类号： C04B41/83 , C04B41/48
摘要： PURPOSE: To obtain a carbon-contg. brick inhibiting slip and dust generation. CONSTITUTION: This firebrick is a carbon-contg. brick coated with a liq. resin contg. a powdered resin in a half-melted state. This firebrick is produces as follows; a powdered resin is mixed with a stabilizer and a plasticizer under stirring, this mixture is heated at 90-150 deg.C to absorb the stabilizer and plasticizer in the powdered resin and to make the resin porous, this porous powdered resin is added to a liq. resin and stirred, and the resultant powdered resin-contg. liq. resin is applied to the surface of a firebrick and hardened by drying at 100-300 deg.C for 1-10hr.

5. 发明专利

JPH11158531A DEVICE FOR GAS BLOWING AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH11158531A
公开(公告)日：1999-06-15
申请号：JP32361297
申请日：1997-11-25
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： HORI MAKOTO , ITO YOSHINORI , SASAKI KAZUO , KONO KOJI , TAKEUCHI YOSHITSUGU
IPC分类号： C22B9/05 , C21C5/48 , C21C7/072
摘要： PROBLEM TO BE SOLVED: To obtain a device for gas blowing used for blowing the gas to molten metal and having a wind box displaying excellent heat resistance, corrosion resistance, gas permeability, flow-rate control-liability with a simpler manufacturing method. SOLUTION: A metallic engaging parts 2 is attached at the time of forming a refractory 1 for gas blowing and the wind box is fixedly combined to this refractory by welding this metallic engaging parts 2 and the wind box 5, and heat resistant sealing agent is applied or filled to the contacting part between the wind box and the refractory. Through-hole obtd. by burning up a bar-shaped or linear methyl methacrylate based resin buried in the blended refractory raw material is formed at the time of forming the refractory block at >=80% of the through-hole formed in the refractory for gas blowing, and metallic pipes 3 and the wind box constituting the rest through-hole, are fixedly welded. Further, the material of the refractory for gas blowing is a carbon-containing refractory and the heating temp. burning up the buried resin is set at 50-100 deg.C and thus, the gas blowing device having high durability is obtd.

6. 发明专利

JPH11140532A MANUFACTURE OF REFRACTORY FOR GAS BLOWING 失效
公开(公告)号：JPH11140532A
公开(公告)日：1999-05-25
申请号：JP30763397
申请日：1997-11-10
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： HORI MAKOTO , ITO YOSHINORI , SASAKI KAZUO , KONO KOJI , TAKEUCHI YOSHITSUGU
IPC分类号： C04B38/06 , C21C5/48 , C21C7/072
摘要： PROBLEM TO BE SOLVED: To obtain a gas blowing refractory for molten metal excellent in heat resistance, erosion resistance, gas permeability and flow rate controllability and further, in low cost with simpler manufacturing method. SOLUTION: In a body for ceramic component, such as carbon-containing refractory composition, a bar-like or wire-like resin composed of methyl methacrylate base high polymer and this derivative and =70% monomer yield developed with the heat decomposition, is embedded and after forming, the resin is lost through the heating treatment at 400-1000 deg.C to obtain plural through-holes.

7. 发明专利

JPH06116048A SPINEL MONOLITHIC REFRACTORY 失效
公开(公告)号：JPH06116048A
公开(公告)日：1994-04-26
申请号：JP29395392
申请日：1992-10-08
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： TAKEUCHI KAZUHIKO , NAKAO ATSUSHI , YAMADA JUNJI , KONO KOJI , EGAMI JUN
IPC分类号： C04B35/66
摘要： PURPOSE:To improve high temp. strength without using a sintering assistant by restricting the particle diameter of alumina in a monolithic refractory containing magnesia, alumina and spinel as a main component. CONSTITUTION:This monolithic refractory contains (A) 100 pts.wt. sum consisting of 5-95 pts.wt. magnesia and 95-5 pts.wt. alumina with a small quantity of a binder and a slaking preventive by external multiplication or (B) 100 pts.wt. sum of 5-95 pts.wt. magnesia, 95-5 pts.wt. alumina and 0.1-9.0 pts.wt. spinel with a small quantity of the binder and the slaking preventive by external multiplication, where the alumina having 0.5-1.0mm particle diameter occupies

8. 发明专利

JPH05286772A 失效
公开(公告)号：JPH05286772A
公开(公告)日：1993-11-02
申请号：JP8568992
申请日：1992-04-07
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： KOGA MASANORI , TAKITA ICHIRO , NISHINO YASUSHI , KURATA KOSUKE , KONO KOJI , YAMADA JUNJI
IPC分类号： C04B35/66
摘要： PURPOSE:To provide a spray repairing material which obtains an executed body which is used at high temp., contains a lower water content and is used for long services, in order to prolong the service life of a furnace in a steelmaking furnace whose operation condition is severe. CONSTITUTION:The hot spray repairing material is a basic aggregate which consists essentially of magnesia, dolomite, etc., and incorporates 1-10wt.% calcined magnesia whose specific surface area is 10m /g, in order to decrease the quantity of slaked lime to be used and the slaked lime as a hardener is restrained to 0.1-1wt.%, and a 1-5wt.% amorphous silica, a >=0.05wt.% dispersant and a general bonding agent are added.

9. 发明专利

JPH02255578A MONOLITHIC REFRACTORY CONTAINING METAL FOR LINING MOLTEN IRON VESSEL 失效
公开(公告)号：JPH02255578A
公开(公告)日：1990-10-16
申请号：JP7781889
申请日：1989-03-28
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： ABE MASAO , YOSHITOMI TAKENORI , SHIBATA KATSUUMI , KONO KOJI
IPC分类号： B22D41/02 , C04B35/66
摘要： PURPOSE:To eliminate a hydration reaction due to the exposure of metal and to increase the strength of the refractory by preparing resin-coated metallic grains to be mixed into a carbon-contg. monolithic refractory by prilling and mixing the grains into the refractory. CONSTITUTION:A mixture of molten pitch and Al powder in 1:1 weight ratio is granulated by prilling to obtain resin coated metallic granules. The granules are added to a classified alumina-silicon carbide based casting material to obtain a monolithic refractory. When the refractory is kneaded with water as molten iron vessel lining material and applied, the hydration reaction of metal is prevented, and the corrosion resistance and high-temp. strength are increased. Furthermore, since crushing is not needed in the classification, time and effort are saved, and the metal is not exposed.

10. 发明专利

JPH04130051A AL2O3-CR2O3-ZRO2 REFRACTORY FOR VESSEL FOR PRETREATING MOLTEN PIG IRON 失效
公开(公告)号：JPH04130051A
公开(公告)日：1992-05-01
申请号：JP24797090
申请日：1990-09-17
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： SHIBATA KATSUUMI , YAMAMOTO HIROSHI , KURATA KOSUKE , KONO KOJI
IPC分类号： B22D41/02 , C04B35/10 , C04B35/101
摘要： PURPOSE:To improve corrosion and spalling resistances by molding, drying and firing a specified starting material blend. CONSTITUTION:A starting material blend obtd. by kneading starting material for alumina with 5-40wt.% clinker consisting of 25-85wt.% Al2O3, 10-70wt.% ZrO2 and 5-25wt.% SiO2, 2-20wt.% CrO and 1-10wt.% sinterable powder (e.g. zircon) of =1,300 deg.C.

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