专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0356103A PREPARATION OF FERRIC SULFATE FLOCCULANT 失效
公开(公告)号：JPH0356103A
公开(公告)日：1991-03-11
申请号：JP18886689
申请日：1989-07-24
申请人： NIPPON KOKAN KK , DOWA MINING CO
发明人： HIRANO MINORU , SATO HIROSHI , INAMOTO TETSUO , SATO HIDEYUKI , YANAGAWA REIKO , MAGOTA HIROMI , SHIRATORI JUICHI
IPC分类号： B01D21/01 , C01G49/14
摘要： PURPOSE:To obtain the title flocculant at low cost by culturing and propagating an iron oxidizing bacteria in a bioreactor, leading an aqueous sulfuric acid acidic solution such as a ferrous sulfate-containing sulfuric acid pickling waste to the bioreactor, and oxidizing the ferrous sulfate to ferric sulfate. CONSTITUTION:An iron oxidizing bacteria is cultured and propagated in a bioreactor, a ferrous sulfate-containing aqueous sulfuric acid acidic solution is led to the bioreactor, and the ferrous sulfate is oxidized there to ferric sulfate to give a ferric sulfate flocculant. Bacteria used for the method is preferably one prepared, for example, by culturing an iron oxidizing bacteria contained in a sludge using a wastewater treatment sludge as a seed in a ferrous ion- containing culture fluid at high concentration and separating only bacteria having high oxidation function selectively. This method enables troublesome sulfuric acid-based pickling waste to be used as an iron-based flocculant effectively at economical cost.

2. 发明专利

JPH0512407A DETECTOR FOR SMOKE OR DUST WITH IMAGE PROCESSING 失效
公开(公告)号：JPH0512407A
公开(公告)日：1993-01-22
申请号：JP16436691
申请日：1991-07-04
申请人： NIPPON KOKAN KK
发明人： INAMOTO TETSUO , HIRANO MINORU , SATO HIROSHI
IPC分类号： G06T1/00
摘要： PURPOSE:To speedily and exactly identify the source of pollution at a facility to prevent air pollution by monitoring dust or smoke in the various facilities of a large factory such as a iron works or the like. CONSTITUTION:The various facilities are provided to speedily and exactly identify the source of the air pollution by executing a processing 2 such as moving average or the like to fluctuating images 1 in a specified view, next, executing a processing 3 such as differentiation or the like and executing collation/judgement 54 in comparison with the data of a weather detection part 52. Thus, the source of the air pollution can be speedily and exactly identified at all times, the optimum emergency countermeasure can be taken and the air pollution can be prevented.

3. 发明专利

JPH0510737A DETECTION OF SMOKING AND DUST GENERATION BY IMAGE PROCESSING 失效
公开(公告)号：JPH0510737A
公开(公告)日：1993-01-19
申请号：JP16314691
申请日：1991-07-03
申请人： NIPPON KOKAN KK
发明人： HIRANO MINORU , SATO HIROSHI , INAMOTO TETSUO
IPC分类号： G01B11/24 , G01B11/245 , G06T1/00
摘要： PURPOSE:To prevent smoking and dust generation caused by one' s own industrial plant as a pollution source by comparing and judging the standard image which is obtained by dividing an inmage taken repeatedly in a fixed visible field into image elements, the different image from the real time image, and weather condition data. CONSTITUTION:Images in a fixed visible field are repeatedly taken by a camera. After changing images changeble by sunshine, rain falling, etc., like dust generating and smoking images of a converter steelmaking plant of an iron-manufacturing company are divided into image elements and the moving average of the image elements of several images is calculated, the difference between the brightness of each image element of a real-time changing image and that of the calculated result is calculated. Dust generation and smoking are judged based on the difference images and the resulting signal is supplied to a computer 54. At the same time, wind direction, wind speed, and sunshine data are sent to the computer 54 from a weather condition detecting part 52 and further image pattern information for respective pollution sources are sent to the computer 54 from an image pattern refering part 53. Those three kinds of signals are compared and refered to distinguish the pollution source quickly. Consequently, dust generation and smoking are found in an extremely early stage and emergency treatment becomes possible.

4. 发明专利

JPH0352621A TREATMAENT OF WASTE COMBUSTION GAS 失效
公开(公告)号：JPH0352621A
公开(公告)日：1991-03-06
申请号：JP18427989
申请日：1989-07-17
申请人： NIPPON KOKAN KK
发明人： SATO HIROSHI , HIRANO MINORU , HARUNAGA TSUTOMU , ISO HIDETAKA
IPC分类号： F23J15/04 , B01D53/34 , B01D53/50 , B01D53/81 , F23J15/00
摘要： PURPOSE:To simply and efficiently carry out the collection of dust from waste combustion gas, the removal of SO2, HCl, etc., and the recovery of heat by connecting a cooling water feeding mechanism and an NaOH soln. feeding mechanism to the cooling water sprayer of a gas cooler so that the mechanisms can separately be controlled. CONSTITUTION:A gas cooler 1 fitted with a cooling water sprayer 8, a dry dust collector 2, a heat recovering unit 3 and a chimney 12 are arranged. A cooling water feeding mechanism 6, 13 and an NaOH soln. feeding mechanism 5, 14 are connected to the sprayer 8 so that the mechanisms can separately be controlled. Waste combustion gas is kept at 200-400 deg.C just before the dust collector 2 with the mechanism 6, 13 and the concn. of SO2 in the gas is regulated to a set value just before the chimney 12 with the mechanism 5, 14. The collection of dust from the gas, the removal of SO2, HCl, etc., and the recovery of heat are simply and efficiently carried out.

5. 发明专利

JPS6393814A BOTTOM BLOWING NOZZLE 失效
公开(公告)号：JPS6393814A
公开(公告)日：1988-04-25
申请号：JP23750686
申请日：1986-10-06
申请人： NIPPON KOKAN KK
发明人： TABATA YOSHIAKI , HASEGAWA TERUYUKI , HIRANO MINORU , TOYODA KOJI
IPC分类号： C21C5/48 , C21C7/072
摘要： PURPOSE:To effectively prevent the leakage of molten metal and the clogging of nozzle, by combining a first passage composing of plural number of small holes and a second passage collecting gas in the small holes to constitute a bottom blowing nozzle. CONSTITUTION:A nozzle main body 12 of the bottom blowing nozzle 10 is made of truncated cone shape non-porous refractory and a pipe 16 providing steel-made flange 14 is fitted to the lower end thereof. At the lower part of the nozzle main body 12, the first passage 20 is formed by burring the plural steel-made pipe 18 and opened on the lower face of steel-made gas collecting box 22, to form a gas storage 24 by the gas collecting box 22. Steel-made single pipe 26 (or double pipes) is fitted to the upper face of gas collecting box 22, to form the second passage 28. In this way, even if the molten metal invades in the second passage 28, the invaded molten metal does not pass through the plural small holes of the first passage 20 by its surface tension and the low pressure blowing gas is used.

6. 发明专利

JPS6383217A METHOD FOR COATING HEARTH OF REFINING FURNACE 失效
公开(公告)号：JPS6383217A
公开(公告)日：1988-04-13
申请号：JP22798586
申请日：1986-09-29
申请人： NIPPON KOKAN KK
发明人： MORI HAJIME , HONGO YUKIO , HIRANO MINORU
IPC分类号： C21C5/52 , C21C7/00 , F27B3/14
摘要： PURPOSE:To effectively protect the hearth of a refining furnace from erosion by feeding Cr ore after the taping of molten metal in the furnace so as to form a coating layer consisting of residual slag and the Cr ore on the hearth. CONSTITUTION:Molten metal refined in a refining furnace such as an electric furnace 1 is tapped from the tap hole 3 after the end of refining and the work hole 4 is opened to discharge slag. Cr ore power 10 is then blown on residual slag 7 spread on the hearth 6 from a jet nozzle device 8 with a carrier gas such as Ar to form a Cr ore layer of a prescribed thickness on the surface of the residual slag 7. Since the Cr ore powder 10 contains chromium oxide having a high m.p., a coating layer having a high m.p. is formed on the hearth 6, so the service life of the hearth refractory can be prolonged.

7. 发明专利

JPS62263912A METHOD FOR RECOVERING LDG OF HERMETIC CONVERTER 失效
公开(公告)号：JPS62263912A
公开(公告)日：1987-11-16
申请号：JP10389586
申请日：1986-05-08
申请人： NIPPON KOKAN KK
发明人： TABATA YOSHIAKI , HIRANO MINORU , HASEGAWA TERUYUKI , ISHIKAWA HIROAKI
IPC分类号： C21C5/40
摘要： PURPOSE:To recover a converter gas at a high yield by blowing an inert gas in such a manner that a pressure difference between inside and outside skirts attains a specific value or below at the time of hermetically closing the gas generated from the converter by the double skirts and recovering such gas. CONSTITUTION:The converter gas contg. much CO and Fe2O3 powders in the timing when a decarburization reaction is active is recovered at a high recovery rate by hermetically closing the part between a converter throat and flue with the double skirts without escaping said gas to the outside and without allowing CO to be burned by the air intruded from the outside at the time of steel making refining by the top blown converter. The inert gas such as N2 or Ar is blown between the skirts to maintain the difference between the internal pressure P0 of the inside skirt and the internal pressure P0' of the outside skirt at =2mmH2O. the gas is thus recovered without allowing the CO-component to be burned by the air intruded from the outside and conversely without allowing the converter gas to dissipate from the skirts to the outside and to burn.

8. 发明专利

JPS62228422A METHOD FOR PREVENTING PRETREATED MOLTEN PIG IRON FROM PRODUCING DUST 失效
公开(公告)号：JPS62228422A
公开(公告)日：1987-10-07
申请号：JP7118086
申请日：1986-03-31
申请人： NIPPON KOKAN KK
发明人： TABATA YOSHIAKI , KAJITANI HIDEO , HIRANO MINORU , TOYODA KOJI , HASEGAWA TERUYUKI
IPC分类号： C21C1/00 , C21C5/28
摘要： PURPOSE:To easily and surely prevent pretreated molten pig iron from producing dust during transportation by adding a substance contg. Al to the molten pig iron so as to inhibit the reaction of the iron with the air. CONSTITUTION:Molten pig iron is pretreated and a substance contg. Al is added to the molten pig iron by about 0.018% (expressed in terms of solid Al) so as to prevent the molten pig iron from producing a large amount of dust by the oxidation reaction of the iron with the air during transportation. Al is oxidized with priority to iron.

9. 发明专利

JPS6263612A NON-OXIDATION STEEL TAPPING HOLE OF FURNACE 失效
公开(公告)号：JPS6263612A
公开(公告)日：1987-03-20
申请号：JP20181785
申请日：1985-09-13
申请人： NIPPON KOKAN KK
发明人： MORI HAJIME , HIRANO MINORU , HASEGAWA TERUYUKI , KAWAI YOSHIHIKO , KIKUCHI YOSHITERU
IPC分类号： C21C5/46 , C21C7/10
摘要： PURPOSE:To prevent the oxidation and nitrogen absorption of a molten metal tapped from a furnace by the intrusion of air therein by providing a vacuum chamber enclosing the space in front of the tapping side of a sliding nozzle provided in a tap hole and disposing an Al plate to the wall surface thereof so as to face the nozzle end of the slide nozzle. CONSTITUTION:The vacuum chamber 3 enclosing the space in front of the tapping side of the slide nozzle 2 provided to the tap hole 1' of a furnace body 1 of a converter, AOD, etc. is airtightly holdably provided via an O-ring to said side. The Al plate 5 is mounted to the wall surface position of said chamber 3 where the plate faces the end of the nozzle 2. The inside of the chamber 3 is maintained in a vacuum state or in the state of sealing with an inert gas such as Ar. The molten metal ejected from the tap hole 1' via the nozzle 2 melt-cuts the plate 5 and is thus tapped into the ladle (not shown) preferably under the vacuum or inert seal. The contamination of the molten steel such as oxidation or nitrogen absorption by the intrusion of the air is thus prevented.

10. 发明专利

JPS627813A REFINING METHOD BY BLOWING IN CONVERTER 失效
公开(公告)号：JPS627813A
公开(公告)日：1987-01-14
申请号：JP14578185
申请日：1985-07-04
申请人： NIPPON KOKAN KK
发明人： HIRANO MINORU , FUKUMI JUNICHI , TANABE HARUYOSHI , KAWAKAMI MASAHIRO
IPC分类号： C21C5/28 , C21C5/34
摘要： PURPOSE:To inhibit increases in [O] and [T.Fe] in finally refined molten steel by adding a small amount of a reducing agent such as coke to molten steel in a converter at the end of a refining stage for manufacturing steel in the converter. CONSTITUTION:When molten pig iron is subjected to oxidative decarburization by blowing oxygen in a bottom blowing converter to manufacture molten steel, a reducing agent such as coke is added by 0.1-5 kg per 1 ton molten steel after the lapse of 80-95% of the entire refining time. Excess oxygen [O] present in the molten steel reacts with the reducing agent such as coke, so the amount of [O] decreases and the amount of [T.Fe] can be controlled. Thus, steel is manufactured by refining in a high yield of raw materials.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式