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21. 发明专利

JPH10259415A IMMERSION TUBE FOR TREATING MOLTEN STEEL 失效
公开(公告)号：JPH10259415A
公开(公告)日：1998-09-29
申请号：JP8600097
申请日：1997-03-18
申请人： HARIMA CERAMIC CO LTD
发明人： TSUCHINARI AKIHIRO , TANAKA MANJIRO
IPC分类号： C21C7/10
摘要： PROBLEM TO BE SOLVED: To prevent the fall-down of a refractory layer in an immersion tube for treating molten steel. SOLUTION: In the immersion tube for treating the molten steel arranging the refractory layers 3 on the outer periphery and the inner periphery of a cylindrical core metal 2 providing a flange 1 at the upper part, the refractory layer 3 in the inner periphery is made to brick layer 6. Many recessed parts are formed on the brick back surface of this brick laying (the recessed parts in this case except the one for abutting the metal for supporting the refractory layer) and also, the refractory layer at the lower end is made to monolithic refractory 4 supported with studs 5 and further, the monolithic refractory 4 is interposed between the brick laying and core metals.

22. 发明专利

JPH08143357A MAGNESIA-CHROMIUM BASED NON-FIRED BRICK 失效
公开(公告)号：JPH08143357A
公开(公告)日：1996-06-04
申请号：JP7981694
申请日：1994-03-24
申请人： HARIMA CERAMIC CO LTD
发明人： TSUCHINARI AKIHIRO , OKAMOTO NAOHITO
IPC分类号： C04B35/047 , C04B35/043
摘要： PURPOSE: To produce a magnesia-chromium based non-fired brick excellent in corrosion resistance and resistance to heat spalling. CONSTITUTION: The brick is composed of 2-15wt.% Al2 O3 and 2-10wt.% TiO2 in a compound composition comprising primarily of magnesia based starting material, chromia based starting material, alumina based starting material and titania based starting material. Moreover, at least more than one kind among 1-10wt.% metal powder and 1-20wt.% oxide or carbon are added to this composition. In this way, the brick is excellent in corrosion resistance and resistance to heat spalling equal to or more than conventional burnt article and high in durability by using a solid soln. reaction with the alumina based starting material and the titania based starting material and by adding in proper quantity the metal powder, the oxide and the carbon.

23. 发明专利

JPH04154683A PRODUCTION OF NOZZLE FOR BLOWING GAS 失效
公开(公告)号：JPH04154683A
公开(公告)日：1992-05-27
申请号：JP27721790
申请日：1990-10-15
申请人： HARIMA CERAMIC CO LTD
发明人： TSUCHINARI AKIHIRO , SHIMOBAYASHI OSAMU
IPC分类号： C04B38/06 , B22D1/00 , C21C7/072 , C22B9/05
摘要： PURPOSE:To readily form gas holes of a nozzle for blowing gases at an accurate regular interval without clogging by spirally winding and superposing refractory powder containing a binder in a state thereof laminated on a vanishing sheet, pressurizing the sheet, heating the laminate and making the vanishing sheet disappear. CONSTITUTION:Refractory powder 1 containing an adequate amount of a binder is laminated on a vanishing sheet 2, spirally wound, superposed in this state, pressurized and then heated to make the vanishing sheet 2 disappear. If through- holes 3 are formed at any places in the vanishing sheet 2, spacers having the action of supports are preferably formed in gas holes 4 with the through-holes 3 to reinforce the gas holes 4. The resultant nozzle for blowing gases has the spiral gas holes 4 passing therethrough formed in the vertical directions. In use, the peripheral part is preferably covered with a dense refractory 5 so as to prevent the gases from leaking from the side. An outer peripheral iron shell 6 and a gas inlet pipe 7, as necessary, are installed in the same manner as that in a conventional method.

24. 发明专利

JPH03205341A PRODUCTION OF POROUS REFRACTORY FOR GAS BLOWING 失效
公开(公告)号：JPH03205341A
公开(公告)日：1991-09-06
申请号：JP34488689
申请日：1989-12-29
申请人： HARIMA CERAMIC CO LTD
发明人： TSUCHINARI AKIHIRO
IPC分类号： B22D41/58 , B22D41/42 , C04B35/00 , C04B35/04 , C04B35/043 , C04B35/10 , C04B35/101
摘要： PURPOSE:To improve spalling resistance and corrosion resistance by blending synthetic aluminum titanate having specific TiO2/Al2O3 with refractory aggregate in a specific ratio and burning the blend. CONSTITUTION:Aluminum titanate is synthesized in the ratio of TiO2/Al2O3 of 0.2-2 (molar ratio). 3-25wt.% of the synthetic aluminum titanate is blended with the rest of refractory aggregate. The blend is molded and burnt.

25. 发明专利

JPH025708B2 失效
公开(公告)号：JPH025708B2
公开(公告)日：1990-02-05
申请号：JP4133283
申请日：1983-03-11
申请人： HARIMA CERAMIC CO LTD
发明人： TSUCHINARI AKIHIRO
IPC分类号： C04B35/101 , C04B14/30

26. 发明专利

JPH01320265A ALUMINA-SILICON CARBIDE-CARBON BRICK 失效
公开(公告)号：JPH01320265A
公开(公告)日：1989-12-26
申请号：JP15559888
申请日：1988-06-23
申请人： HARIMA CERAMIC CO LTD
发明人： TSUCHINARI AKIHIRO , HOGII TOSHIYUKI , TANAKA MASAHITO
IPC分类号： C04B35/103 , C04B35/10
摘要： PURPOSE:To improve spalling and wear resistances by incorporating SiC, carbon and alumina having a prescribed particle size distribution. CONSTITUTION:A refractory material blend consisting of 10-15wt.% SiC, 10-25wt.% carbon and the balance essentially alumina having an Andreasen particle size distribution represented by the equation (where Dmax is 3-5mm max. particle size, q is 0.5-0.8 distribution coefft. and F is the total percentage of particles whose particle size is below D mm). 0.5-5wt.% magnesia, phenol resin, etc., are added to the blend as required and they are kneaded, molded and dried to produce an alumina-SiC-carbon brick.

27. 发明专利

JPH1192820A IMMERSION TUBE FOR MOLTEN STEEL 失效
公开(公告)号：JPH1192820A
公开(公告)日：1999-04-06
申请号：JP27531897
申请日：1997-09-22
申请人： HARIMA CERAMIC CO LTD
发明人： TSUCHINARI AKIHIRO , TANAKA MANJIRO
IPC分类号： C21C7/10
摘要： PROBLEM TO BE SOLVED: To firmly and easily fix the outer peripheral refractories of an immersion tube by parallel arranging vertically integral regular-shaped refractories as the outer peripheral refractories in the peripheral direction, tying the outside upper parts of the outer peripheral refractories with a band steel in the peripheral direction and combining a supporting mallet whose base part is stuck to a core metal with the band steel. SOLUTION: The outer peripheral refractories 3a are constituted by parallel arranging the vertically integral regular-shaped refractories in the peripheral direction of the core metal 1a. The outside upper parts of the outer peripheral refractories 3a are tied with the band steel 7 in the peripheral direction, and also, the supporting mallet 8 whose base end is fixed to the core metal 1a, is combined with the band steel 7. As a result, the outer peripheral refractories 3a can be connected with the core metal 1a in a firmly integrated state by tying with the band steel 7. Further, the fitting of the outer peripheral refractories to the core metal 1a may be executed to quickly and simply combine the supporting mallet 8 with the band steel 7 by beforehand surrounding the outer peripheral refractories 3a with the band steel 7.

28. 发明专利

JPH0942856A CONSTRUCTING METHOD OF FURNACE AND BRICK OF HIGH EXPANSIVITY USED FOR THE METHOD 失效
公开(公告)号：JPH0942856A
公开(公告)日：1997-02-14
申请号：JP19776795
申请日：1995-08-02
申请人： HARIMA CERAMIC CO LTD , SUMITOMO METAL IND
发明人： TSUCHINARI AKIHIRO , KATO YOSHIKAZU , OKAMOTO NAOHITO , MIKI TAKASHI , UCHIDA MASAHIKO
IPC分类号： C21C7/10 , F27D1/04 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To provide a constructing method enabling construction of a furnace having a thermal shock resistance and a brick of high expansivity being used for the constructing method, by using a brick of high expansivity not containing an additive in question, such as carbon, and chromium. SOLUTION: The ratio of a long side (b) to a short side (a) of the face of a brick 1 of high expansivity coming into contact with molten steel is set to be 1 to 2. On the occasion when a furnace is constructed by using this brick 1 of high expansivity, a joint thickness is made 1.25 to 2.0 times larger than an empty joint thickness at a temperature of 1500 deg.C. As for a joint material, a ceramic sheet is used.

29. 发明专利

JPH08208316A MAGNESIA-CHROME FIRED BRICK 失效
公开(公告)号：JPH08208316A
公开(公告)日：1996-08-13
申请号：JP18404894
申请日：1994-07-12
申请人： HARIMA CERAMIC CO LTD
发明人： TSUCHINARI AKIHIRO , OSAKI HIROSUKE , YAMAMOTO TETSUO
IPC分类号： C04B35/047
摘要： PURPOSE: To obtain a magnesia-chrome fired brick excellent in resistance to corrosion and the penetration of slag. CONSTITUTION: A blend consisting of 5-80wt.% electromelted magnesia having grain boundaries of 5-50μm width in the particles and the balance essentially magnesian stock and chromite is sintered to obtain the objective magnesia- chrome fired brick.

30. 发明专利

JPH07291715A SPINEL REFRACTORY BRICK 失效
公开(公告)号：JPH07291715A
公开(公告)日：1995-11-07
申请号：JP28734893
申请日：1993-10-21
申请人： HARIMA CERAMIC CO LTD
发明人： TSUCHINARI AKIHIRO , OSAKI HIROSUKE , YAMAMOTO TETSUO
IPC分类号： C04B35/04 , C04B35/443
摘要： PURPOSE:To improve the corrosion resistance by forming the spinel refractory brick from a magnesia clinker containing specific structural components and having spinel phase or spinel phase and forsterite phase present in the grain boundary of MgO and a spinel raw material. CONSTITUTION:The magnesia clinker having spinel phase or spinel phase and forsterite phase present in the grain boundary of MgO is formed by mixing an Al2O3 raw material such as alumina clinker, a MgO raw material such as magnesia clinker and a SiO2 raw material such as natural quartz so as to be >=80wt.% (hereinafter %) in MgO and =1750 deg.C.

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