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21. 发明专利

JPH05106972A SPRAYING AND BUILDING METHOD OF STRUCTURE 失效
公开(公告)号：JPH05106972A
公开(公告)日：1993-04-27
申请号：JP26749791
申请日：1991-10-16
申请人： KAWASAKI STEEL CO
发明人： EBISAWA RITSU
IPC分类号： C21C5/44 , F27D1/10 , F27D1/16
摘要： PURPOSE:To change the composition of spray reinforced transfer materials in continuous mode and prevent the generation of cracks resultant from material changes per site by changing a spray flow rate of two types of spray materials between adjacent sites consecutively and changing continuously the spray materials. CONSTITUTION:Before a kneading vessel is lined with some refractories materials selected from a damage factor or a damage level for every intended site, at the point of the time when a refractory insulation castable article reaches a specified thickness, the spray of a first refractory material 2 is continued while the spray of a high aluminum refractory castable article, which is a second refractory material 3, is started. The first flow rate of the first refractory material 2 is reduced continuously while the spray flow rate of the second refractory material 3 is increased continuously. When a continuous boundary tank 4 has reached a specified thickness as a result of the above formation, the spray of the second refractory material 3 is continued until it reaches the specified thickness, thereby finishing the lining work.

22. 发明专利

JPH04228469A UNBURNED MAGNESIA CARBON BRICK 失效
公开(公告)号：JPH04228469A
公开(公告)日：1992-08-18
申请号：JP40849790
申请日：1990-12-27
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO , DAINIPPON INK & CHEMICALS
发明人： OKAMOTO TAKAO , TSUCHIYA ICHIRO , SHIMA AKIRA , EBISAWA RITSU , NISHIMURA DAIJIRO , SAMEJIMA KENICHI
IPC分类号： C04B35/043 , C04B35/04
摘要： PURPOSE:To provide an unburned magnesia carbon brick having a reduced amount of carbon raw material blended without lowering corrosion resistance and spalling resistance, with respect to the production of refractory brick, especially to the unburned magnesia carbon brick in this invention. CONSTITUTION:A refractory raw material comprising a magnesia raw material blended with 0.5-5wt.% pitch and 3-10wt.% graphite as a main aggregate is mixed with a phenolic resin having compatibility with pitch such as alkoxymethylphenol resin as a binder and more preferably unburned magnesia carbon brick comprises >=40wt.% magnesia raw material ground into 6-50mm particle diameter.

23. 发明专利

JPH0397660A BASIC REFRACTORY CONTAINING CARBON 失效
公开(公告)号：JPH0397660A
公开(公告)日：1991-04-23
申请号：JP23256289
申请日：1989-09-07
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： ISHII HIROMASA , UNOSAKI NOBUYUKI , TSUCHIYA ICHIRO , KAWAKAMI TATSUO , EBISAWA RITSU
IPC分类号： C04B35/03 , C04B35/52
摘要： PURPOSE:To improve wear and corrosion resistances by incorporating carbon into a basic refractory material contg. coarse grains of an electromelted basic refractory material having a specified grain size. CONSTITUTION:A basic refractory material such as magnesia is mixed with 20-80wt.% coarse grains of an electromelted basic refractory material (e.g. electromelted MgO) having 6-50mm grain size and contg. 0.5-30wt.% Cr2O3 to obtain aggregate. This aggregate is mixed with 3-80wt.% (expressed in terms of carbon) carbon source material (e.g. coke) having

24. 发明专利

JPH02167855A CARBON-CONTAINING BASIC REFRACTORY BRICK 失效
公开(公告)号：JPH02167855A
公开(公告)日：1990-06-28
申请号：JP32391988
申请日：1988-12-22
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： ISHII HIROMASA , TSUCHIYA ICHIRO , OGUCHI MASAO , KAWAKAMI TATSUO , EBISAWA RITSU
IPC分类号： C04B35/00 , C04B35/03
摘要： PURPOSE:To improve corrosion, abrasion resistance, etc., and provide a suitable lining material, etc., in slag line parts of a steel making furnace by constructing a specific amount of an aggregate from coarse grains having a prescribed grain diameter in carbon-containing basic refractory brick using a basic refractory material as the aggregate. CONSTITUTION:An aggregate consisting of a basic refractory material, such as magnesia, dolomite, calcia or spinel, is prepared so that 20-80% aggregate may be composed of coarse grains having 6-50mm grain diameter. the resultant aggregate is then mixed with required raw materials, such as carbon source materials (e.g. graphite) and binders (e.g., coal tar pitch), formed and then calcined to produce carbon-containing basic refractory brick. The resultant refractory brick can be subsequently used as a lining material, etc., in slag line parts of a steel making furnaces to remarkably prolong longevity of the steel making furnaces. Furthermore, the surface of the coarse-grain aggregate can be precoated with a phenolic resin to improve performance of the refractory brick.

25. 发明专利

JPH0252253A METHOD OF ESTIMATING CONDITION OF USING CARBON-CONTAINING REFRACTORIES AND REFRACTORY TEST PIECE USED THEREIN 失效
公开(公告)号：JPH0252253A
公开(公告)日：1990-02-21
申请号：JP20202688
申请日：1988-08-15
申请人： KAWASAKI STEEL CO
发明人： EBISAWA RITSU
IPC分类号： G01N25/00 , C04B35/00 , F27D21/00 , G01N33/38
摘要： PURPOSE:To make overall decision of use conditions which affect the wear of carbon- contg. refractories by including detecting rods into the refractories and comparing the characteristics of the detecting rods before and after the use of the refractories. CONSTITUTION:Metallic wires 1 adjusted in diameter or sectional size to a specified size are embedded as the detecting rods into the refractory test piece 2 having the same characteristics as the characteristics of the refractories to be used by directing the longitudinal direction of the wires to the direction of the temp. gradient during the use of the refractories. The test piece 2 is then cut along the metallic wires 1 after the use and the wear of the shape is observed. The metal wires 1 after the use changes to three forms; the part (a) which is largely melted or oxidized, the part (b) which is carbonized and the part (c) which is in the state of the original metal according to the temp. X time X atmosphere of the use conditions. The thermal, chemical and time use conditions to which the refractories are subjected during the use are, therefore, estimated if the characteristics of the metal wires 1, i.e. the revelation conditions of the carbide and oxide of the original metal wires are investigated and measured after use and compared with the original state before use.

26. 发明专利

JPH01275463A NONCALCINED REFRACTORY MATERIAL FOR LINING OF STEEL REFINING FURNACE 失效
公开(公告)号：JPH01275463A
公开(公告)日：1989-11-06
申请号：JP10184688
申请日：1988-04-25
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： HAKONE TETSUOKI , EBISAWA RITSU , OISHI IZUMI
IPC分类号： C04B35/00 , C04B35/04 , C04B35/043
摘要： PURPOSE:To obtain a refractory material capable of retarding a reaction of MgO in a brick with C and preventing diffusion of C into steel by forming secondary particles obtd. by granulating primary particles of a refractory material admixed with carbon with a binder. CONSTITUTION:The title noncalcined refractory is a formed body of secondary particles having 10-0.1mm average grain size which are obtd. by granulating primary particles of a refractory material having 20wt.%, oxidation resistance and corrosion resistance to slag decrease.

27. 发明专利

JPS6451381A MONOLITHIC REFRACTORIES CONTAINING ZIRCONIUM CARBIDE 失效
公开(公告)号：JPS6451381A
公开(公告)日：1989-02-27
申请号：JP20702987
申请日：1987-08-19
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： SATO KENICHI , YAMANE TOSHIO , OGUCHI MASAO , KAWAKAMI TATSUO , EBISAWA RITSU
IPC分类号： C04B35/66
摘要： PURPOSE:To obtain the titled refractories having superior corrosion resistance to molten pig iron, etc., satisfactory erosion and spalling resistances at high temp. by incorporating a specified amt. of fine powdery ZrC. CONSTITUTION:Water is added to 100wt.% refractory blend prepd. by adding 3-30wt.% fine powdery ZrC having =90% purity to 40-80wt.% aggregate having a properly regulated diameter of about 8-0.3mm such as Al2O3, MgO or CaO or by further adding a proper amt. of fine graphite powder, superfine Al2O3 powder, etc.,

28. 发明专利

JPS62119387A VESSEL FOR REFINING MOLTEN METAL 失效
公开(公告)号：JPS62119387A
公开(公告)日：1987-05-30
申请号：JP25949885
申请日：1985-11-19
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： TAKAHASHI HIROSHI , HIGASHIHARA TAKESHI , EBISAWA RITSU
IPC分类号： F27D1/00 , B22D11/10 , B22D41/02

29. 发明专利

JPS5616084A METHOD OF BUILDING FURNACE BODY 失效
公开(公告)号：JPS5616084A
公开(公告)日：1981-02-16
申请号：JP9081379
申请日：1979-07-17
申请人： KAWASAKI STEEL CO
发明人： EBISAWA RITSU , IMAZEKI TAMOTSU
IPC分类号： C21D1/00 , F27D1/16

30. 发明专利

JPH04319066A VESSEL FOR RECEIVING MOLTEN METAL 失效
公开(公告)号：JPH04319066A
公开(公告)日：1992-11-10
申请号：JP8645491
申请日：1991-04-18
申请人： KAWASAKI STEEL CO
发明人： EBISAWA RITSU , ENDO MASATO
IPC分类号： B22D11/10 , B22D41/02
摘要： PURPOSE:To improve service life of the above vessel by improving structure of molten metal hitting part, at which abnormal erosion of brick or penetration of metal into joint are remarkably developed, in the vessel for receiving molten metal, of torpedo car, ladle, tundish, etc. CONSTITUTION:Working lining at the molten metal hitting part is constructed with monolithic refractory and also this surroundings are constructed with shaped bricks and further, boundary part between the monolithic refractory and the shaped bricks is combined as the teeth of a comb.

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