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41. 发明专利

JPH02137752A PRODUCTION OF PIGMENT-CONTAINING CALCINED MATERIAL HAVING LOW WATER-ABSORPTION 失效
公开(公告)号：JPH02137752A
公开(公告)日：1990-05-28
申请号：JP28668888
申请日：1988-11-15
申请人： TETSUGEN KK , NIPPON STEEL CORP
发明人： HARUNA JUNSUKE , KATO HIDEO , TANAKA TSUTOMU , UMEDA NOBUYUKI
IPC分类号： C04B14/02 , C04B18/02 , C04B18/08 , C04B33/13 , C04B33/135
摘要： PURPOSE:To obtain a pigment-containing calcined material having low water- absorption at a low cost, effectively utilizing fly ash, by kneading clay, fly ash and a pigment using an aqueous solution of water glass as a kneading water, granulating the mixture and calcining the granule. CONSTITUTION:Fly ash discharged from a coal-fired boiler as a waste is recovered. The recovered fly ash is kneaded with clay and a pigment using an aqueous solution of water glass as a kneading water. The objective pigment- containing calcined material having low water-absorption is produced by granulating the kneaded mixture and calcining the granule. The raw material cost can be reduced because waste fly ash is effectively utilized and the product is produced without using silica sand and feldspar inevitable in conventional process. The amount of the aqueous solution of water glass can be decreased by using fly ash having high contents of Na2O and K2O.

42. 发明专利

JPH01183410A PRODUCTION OF CELLULAR ACTIVATED COKE 失效
公开(公告)号：JPH01183410A
公开(公告)日：1989-07-21
申请号：JP791088
申请日：1988-01-18
申请人： NIPPON STEEL CORP
发明人： WATANABE HIDEMI , INOUE MAMORU , OONO MORIMASA , HARUNA JUNSUKE
IPC分类号： C01B31/08 , C10B39/16
摘要： PURPOSE:To impart excellent adsorption performance and strength to brittle coke, by subjecting the brittle coke formed in a carbonization process of coal to activation treatment. CONSTITUTION:Cob coke obtained by carbonizing coal is cut out from a single particle cutting out device 2 onto a belt conveyor 1 and sensed by a color sensor 3 and a sensed signal is inputted to a signal converter 4 to output an ON-OFF signal to a servo motor 5. Firm coke (silver) is only expelled to a vessel 7 by an uniaxial moving device 6 to select brittle coke (black), which is stored in a vessel 8. The resultant brittle coke is then subjected to activation treatment under conditions of 800-950 deg.C and 5kg-actirated steam/kg-coke for 1.0-1.2hr.

43. 发明专利

JPS6424014A PRODUCTION OF ZEOLITE COMPOSITION FROM FLY ASH 失效
公开(公告)号：JPS6424014A
公开(公告)日：1989-01-26
申请号：JP18007687
申请日：1987-07-21
申请人： NIPPON STEEL CORP
发明人： HARUNA JUNSUKE
IPC分类号： C01B39/46
摘要： PURPOSE:To effectively utilize fly ash with high value added in the production of a zeolite compsn., by blending and kneading the fly ash with an aq. NaOH soln. having a specified concn. and by treating the kneaded material in an autoclave under a specified pressure. CONSTITUTION:Fly ash is blended and kneaded with an aq. NaOH soln. having 0.5-3N concn. and the kneaded material is treated in an autoclave under >=3kg/cm pressure to produce a zeolite compsn. The fly ash can be utilized for an adsorbent, a water purifying agent, etc., with high value added.

44. 发明专利

JPS63310716A TREATMENT OF FLY ASH 失效
公开(公告)号：JPS63310716A
公开(公告)日：1988-12-19
申请号：JP14523187
申请日：1987-06-12
申请人： NIPPON STEEL CORP
发明人： HARUNA JUNSUKE , NUMATA SHINICHI , ISHIKAWA MASATOSHI
IPC分类号： C04B22/08 , C01B33/32
摘要： PURPOSE:To obtain useful water glass and a cement curing accelerator from waste by adding a prescribed alkaline aq. soln. to fly ash, treating the fly ash in an autoclave to extract SiO2 and separating the SiO2 from the residue. CONSTITUTION:Fly ash is added to an aq. soln. of sodium hydroxide or sodium carbonate and the soln. is treated in an autoclave to extract and recover SiO2 in the fly ash as water glass. After the SiO2 is recovered, the residue is utilized as a cement curing accelerator.

45. 发明专利

JPS62222007A MELT REDUCTION METHOD FOR IRON ORE 失效
公开(公告)号：JPS62222007A
公开(公告)日：1987-09-30
申请号：JP6479586
申请日：1986-03-25
申请人： NIPPON STEEL CORP
发明人： HARUNA JUNSUKE , NAKAMURA MASAKAZU , HAYASHI YOICHI , TOKUMITSU NAOKI
IPC分类号： C21B13/14
摘要： PURPOSE:To obtain a molten iron from iron ore and coal with a compact installation at high equipment productivity and labor productivity by charging moldings formed by compression molding of the resulted product of preliminary reduction in a fluidized bed reaction furnace to a flake form into a melt reduction furnace and subjecting the moldings to melt reduction. CONSTITUTION:The preheated iron ore 101 and coal 103 are charged into the fluidized bed reaction furnace 2 and an oxygen-contg. gas 105 is blown therein to char 109 the coal 103. On the other hand, a reducing gas 106 generated in the melt reduction furnace (top and bottom blown converter type reaction vessel) 9 is blown into the furnace 2 to reduce the high-temp. ore 101 in a fluidized state to form the preliminarily reduced ore 108. The ore 108, char 109, etc., are once stored in a bunker 4 and are mixed and agitated with the coal 103, etc., supplied from another line and stored in a bunker 5 by a screw feeder 8 according to the feeding of said coal, etc. The mixture is then molded to the flaky compression moldings 112 by molding rolls 3. The moldings are charged by a charger 12 into the above-mentioned furnace 9 by which the moldings are subjected to the melt reduction.

46. 发明专利

JPS6020453B2 失效
公开(公告)号：JPS6020453B2
公开(公告)日：1985-05-22
申请号：JP16843280
申请日：1980-11-29
申请人： NIPPON STEEL CORP
发明人： HARUNA JUNSUKE , ARAI KATSUTOSHI , SUZUKI SHOHEI
IPC分类号： C22B1/243

47. 发明专利

JPS6017809B2 失效
公开(公告)号：JPS6017809B2
公开(公告)日：1985-05-07
申请号：JP18717181
申请日：1981-11-21
申请人： NIPPON STEEL CORP
发明人： OOMIZU MASARU , HARUNA JUNSUKE , SAWAMURA YASUMASA
IPC分类号： C22B1/16

48. 发明专利

JPH0565548A MANUFACTURE OF SINTERED ORE TOGETHER WITH REMOVAL OF ZINC IN DUST 失效
公开(公告)号：JPH0565548A
公开(公告)日：1993-03-19
申请号：JP22604591
申请日：1991-09-05
申请人： NIPPON STEEL CORP , TETSUGEN KK
发明人： HARUNA JUNSUKE , HOSOYA YOZO , TANAKA TSUTOMU
IPC分类号： C22B1/248
摘要： PURPOSE:To recover iron source from iron-containing dust and sludge together containing zinc produced in an iron-making plant and to use the dust and sludge as resource. CONSTITUTION:At the time of charging pellets obtnd. by mixing and granulating the iron-containing dust and sludge together containing zinc with reducing material of powdered coke, etc., as the raw material into a sintering machine, the above pellets are concentrically put at the lower part having at least

49. 发明专利

JPH059018A METHOD FOR DEHYDRATING ZEOLITIC SLURRY OF COAL ASH AND DEVICE THEREFOR 失效
公开(公告)号：JPH059018A
公开(公告)日：1993-01-19
申请号：JP6644591
申请日：1991-03-29
申请人： NIPPON STEEL CORP , SANGYO SHINKO KK
发明人： TAKEUCHI TAKAHARU , YOSHITAKE TOMOO , KATO HIDEO , HARUNA JUNSUKE , KOBAYASHI SHUICHI
IPC分类号： B09B3/00 , C01B39/02
摘要： PURPOSE:To stabilize a process by eliminating the clogging of a filter in the dehydration treatment of a slurry zeolite product in the zeolitic treatment of coal ash. CONSTITUTION:A branching pipe 11 is provided on a filtrate returning pipe 1 from a dehydrated solution vessel 3 and, from the branching pipe, a caustic soda filtrate is added to a slurry zeolite in a storage tank 1 to be compounded and the slurry concentration is kept at an optimum concentration. Since the slurry concentration is kept constant, the dehydration state is kept in an optimum state. The clogging of a filter bag in the dehydrated solution vessel is eliminated, so the life of the filter bag is prolonged.

50. 发明专利

JPH054813A REACTION TANK FOR FORMING ZEOLITE FROM COAL ASH 失效
公开(公告)号：JPH054813A
公开(公告)日：1993-01-14
申请号：JP6644691
申请日：1991-03-29
申请人： NIPPON STEEL CORP , SANGYO SHINKO KK
发明人： TAKEUCHI TAKAHARU , YOSHITAKE TOMOO , KATO HIDEO , HARUNA JUNSUKE , KOBAYASHI SHUICHI
IPC分类号： B01F5/10 , B01F15/06 , C01B33/20 , C01B39/02
摘要： PURPOSE:To improve the stirring efficiency and temperature controllability of a slurry raw material in a reaction tank for producing zeolite from coal ash. CONSTITUTION:A reaction tank is equipped inside with a stirrer, and outside with a heater for heating a slurry raw material passing through a circuit for circulation between the tank and the heater. The combined use of the stirrer and the circuit enhances the stirring effect for the slurry raw material used for reaction, and the heating from outside improves the temperature controllability of the material.

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