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1. 发明专利

JPH1072244A BECKEN BACH TYPE LIME FURNACE AND ITS OPERATION METHOD 失效
公开(公告)号：JPH1072244A
公开(公告)日：1998-03-17
申请号：JP22826996
申请日：1996-08-29
申请人： SHINAGAWA REFRACTORIES CO , KOBE STEEL LTD
发明人： MIYATANI HITOSHI , SUGA MAKOTO , FUKUI YOSHIO
IPC分类号： C04B2/12 , F27B1/10
摘要： PROBLEM TO BE SOLVED: To enable good calcination of lime by preventing the stagnation of suspended dust between the bridges in the burner installation positions of a Becken, Bach type lime furnace. SOLUTION: This Becken Bach type lime furnace is constituted by concentrically inserting an upper middle cylinder 2 upward in the central part of a furnace cylinder 1 and a lower middle cylinder 3 downward therein. The limestone mixed with cake and is charged into the furnace from the upper part of the furnace cylinder 1 is calcined by the combustion heat of the coke and the combustion heat of the respective burners of an upper-stage combustion chamber 5 and the lower-stage combustion chamber 6 and the products are discharged from the lower part. High-temp. and high-pressure air is blow into the furnace cylinder 1 from the space between the bridges 10 and 10 in the positions where plural pieces of the burners are disposed in the peripheral direction of the upper- stage combustion chamber 5 to promote the combustion of the coke mixed with the limestone and to expel the dust stagnating between the bridges 10 and 10.

2. 发明专利

JPH08133796A AGING PIT OF STEAM AGING EQUIPMENT 失效
公开(公告)号：JPH08133796A
公开(公告)日：1996-05-28
申请号：JP27376294
申请日：1994-11-08
申请人： KOBE STEEL LTD
发明人： TAMURA MITSUYOSHI , KAWAMOTO SADAFUMI , KOBAYASHI YASUKI , MIYATANI HITOSHI , KAMEI KAZUO , MOTOYAMA YUJI , KURAMOTO KAZUTO
IPC分类号： C04B5/00 , C04B20/04 , C21C5/28
摘要： PURPOSE: To provide an aging pit of steam aging equipment capable of easily absorbing the expansion pressure of slag, prolonging the device life by intensifying the resistance to the heat of steam, facilitate loading and delivering of the slag and stabilizing the quality of the aged slag. CONSTITUTION: The aging pit of the steam aging equipment for executing steam aging of the steel making slag at the atm. by supplying steam from below is equipped with a moving wall 2 on the aging pit side wall 1A. This moving wall is so movably formed as to move according to the expansion pressure of the steel making slag simultaneously with the start of the steam aging treatment and to make self-resetting to the initial position before the movement according to discharging of the steel making slag after the completion of the steam aging treatment. The surface part to which the moving wall 2 of the aging pit side wall 1A comes into sliding contact is formed to a slope having a downward grade toward the inner side of the pit.

3. 发明专利

JPH04297513A DEVICE FOR ESTIMATING OPERATIONAL CONDITION IN BLAST FURNACE 失效
公开(公告)号：JPH04297513A
公开(公告)日：1992-10-21
申请号：JP17927591
申请日：1991-07-19
申请人： KOBE STEEL LTD
发明人： HANAOKA KUNIHIRO , OTSUKA YOSHIHISA , MIYATANI HITOSHI , MAKI GOJI
IPC分类号： C21B5/00 , C21B7/00 , C21B7/24
摘要： PURPOSE:To provide this device which easily and suitably estimates an operational condition in a blast furnace without needing the complicated setting and updating work of an operational factor, etc. CONSTITUTION:In the above-mentioned estimating device 1 for the operational device 1 for operational condition in the blast furnace, what is called, a Cohonen type neural net work 2 is applied. Then, a neuron inputting wall dropping position distributing data for learning into a neural net work 2 is specified, and learning of the weight accompanied with this neuron is automatically executed. Simultaneously, a furnace heat lowering index corresponding to the wall dropping position distributing data for learning is allotted to the above-mentioned specified neuron. Then, to the neural net work 2 already leant, the new wall dropping position distributing data are inputted and the specific furnace heat dropping index is estimated as the degree of the lowering of the furnace heat.

4. 发明专利

JPH01208409A METHOD FOR CHARGING RAW MATERIAL INTO BLAST FURNACE 失效
公开(公告)号：JPH01208409A
公开(公告)日：1989-08-22
申请号：JP3466288
申请日：1988-02-16
申请人： KOBE STEEL LTD
发明人： MIYATANI HITOSHI , FUNABIKI TETSUSHI , YUZUKUBO YASUMASA
IPC分类号： C21B5/00
摘要： PURPOSE:To stably keep center flow operation by controlling the specific raw material charging pressure from charging chute at axial center part in accordance with raw material piling level in a furnace and adjusting reached position of the specific raw material. CONSTITUTION:After storing the specific raw material separating to a chute 10 from a charging conveyor 6 to a storing vessel 11, it is charged into a hopper 14 through a slide gate 12, discharging feeder 13. After storing this in a pressurizing chamber 19, it is charged into the axial center part from a charging chute 9. Coke-ore alternative piling state in the furnace is measured with a measuring instrument 2 and profile meter, and based on the result, a working valve 17 or discharging pressure valve 18 in N2 supplying line l1 and N2 discharging line l2 are opened/closed to increase/decrease the pressure in the pressurizing chamber 19. By this method, the discharging speed of the specific raw material discharged from the charging chute 9 is adjusted to stably execute blast furnace operation under good productivity.

5. 发明专利

JPH04202613A OPERATING METHOD FOR BLAST FURNACE 失效
公开(公告)号：JPH04202613A
公开(公告)日：1992-07-23
申请号：JP33630690
申请日：1990-11-29
申请人： KOBE STEEL LTD
发明人： MIYATANI HITOSHI , HORI RYUICHI , ONO REIJI , GOTO TETSUYA
IPC分类号： C21B5/00 , C21B7/16
摘要： PURPOSE:To control rise and fluatuation in pressure of hot blast and to perform stable operation without impairing furnace wave by providing burners while penetrating the blowpipe of tuyeres and blowing both auxiliary fuels of pulverized coal and heavy oil from the independent tuyeres through the burners in the case of operating a blast furnace in which the auxiliary fuels are utilized. CONSTITUTION:Two pieces of burners 1, 2 for blowing auxiliary fuels are provided so that the tip parts thereof are opened in the tuyeres by penetrating the blowpipe 3 of the tuyeres 4 for blowing hot blast in the case of operating a blast furnace in which pulverized coal and heavy oil are used as the auxiliary fuels. Rise and fluctuation in the blowing pressure of hot blast are controlled and operation is continuously performed with the stable furnace wave by separately holding both the tuyere 4 for blowing pulverized coal and the tuyere 4 for blowing heavy oil and blowing both auxiliary fuels.

6. 发明专利

JPH01222006A METHOD AND APPARATUS FOR DIVIDING MOLTEN SLAG ON TROUGH IN BLAST FURNACE 失效
公开(公告)号：JPH01222006A
公开(公告)日：1989-09-05
申请号：JP4707488
申请日：1988-02-29
申请人： KOBE STEEL LTD
发明人： FUJIWARA HIROSHI , MIYATANI HITOSHI , YUZUKUBO YASUMASA , IKEDA OSAMU
IPC分类号： C21B7/14
摘要： PURPOSE:To effectively and stably produce slow cooling and rapid cooling slags at the same time by automatically operating a damper for molten slag dividing flows on the slag trough to divide the molten slag after separating molten iron and the molten slag with a skimmer part in the main trough. CONSTITUTION:The molten iron together with slag tapped off from a blast furnace 1 is separated into the molten iron and the molten slag with the skimmer part 4 in the main trough 3. A slag trough gate 10 at the slow cooling slag treating equipment side arranged in downstream side from the branching point 9 for supplying the molten slag in the slag trough 8, is made to close-state and the slag trough gate 11 at the rapid cooling slag treating side is made to open-state, and then, the molten slag goes over the weir damper 12 embanked on the bottom part of the slag trough at the rapid cooling treating equipment side and flowed down toward the rapid cooling treating equipment. By this method, the slow cooling and rapid cooling slags can be efficiently and stably produced at the same time.

7. 发明专利

JPS648210A METHOD FOR REFINING MOLTEN IRON 失效
公开(公告)号：JPS648210A
公开(公告)日：1989-01-12
申请号：JP16418887
申请日：1987-07-01
申请人： KOBE STEEL LTD
发明人： MIYATANI HITOSHI , NISHIHARA TAKASHI , FUJIWARA HIROSHI
IPC分类号： C21C1/00 , C21C1/02 , C21C1/04
摘要： PURPOSE:To uniformly disperse refining agent in molten iron and to improve efficiency of refining reaction by arranging auxiliary nozzle hole for blowing gas at upper part of nozzle hole of an injection lance blowing the powdery refining agent in the molten iron. CONSTITUTION:The injection lance 5 is almost vertically inserted into the molten iron 2 in desiliconizing refractory 1. The desiliconizing agent flowing passage 4 is formed at the axial position of this lance 5 and connected with the refining agent blowing nozzle 10. Further, plural auxiliary gas flowing passages 7 are formed around the desiliconizing agent flowing passage 4 to connect respectively to the auxiliary nozzle holes 11, and the auxiliary nozzle hole 11 is positioned at upper part of opening position of refining agent blowing nozzle. By this constitution, at the time of blowing the desiliconizing agent 8 carrying from a tank 9 with carrier gas G into the molten iron 2 from the blowing nozzle 10, the carrier gas G becomes relatively large bubble and floated up. At this time, the auxiliary gas Ga is injected as jet flow from the auxiliary nozzle 11 through the auxiliary flowing passage 7 and the floated bubble is subdivided to make fine bubbles and the contacting area between the desiliconizing agent 8 and the molten iron 2 is increased.

8. 发明专利

JPH09137211A METHOD FOR OPERATING ELECTRIC REFINING FURNACE 失效
公开(公告)号：JPH09137211A
公开(公告)日：1997-05-27
申请号：JP29013995
申请日：1995-11-08
申请人： KOBE STEEL LTD
发明人： ARIZUKA MITSUHIRO , MIYATANI HITOSHI , TAKEUCHI SHINJIRO , KIGUCHI JUNPEI
IPC分类号： C21B11/10 , F27B3/08 , F27B3/20
摘要： PROBLEM TO BE SOLVED: To improve productivity and to stabilize operation by increasing the charging ratio of a reducing agent on a furnace core side and lowering the rate on the peripheral side of the furnace in operation of the electric refining furnace to be charged with ore and the reducing agent. SOLUTION: Raw materials of a low cake ratio (coke/ore) are charged into a raw material tank for charging to the peripheral part of the furnace among the raw material tanks disposed in the upper part, and the raw materials of the high coke ratio are charged into the raw material tank for charging to the core part of the furnace in the operation of the electric refining furnace to execute reduction by charging the ore and the reducing agent (usually coke) into the furnace and melting the raw materials by electric energy. If the respective raw materials are charged dividedly into the furnace in this constitution, the electric resistance value in the furnace increases and the gas (CO) generated in the furnace is effectively utilized for the indirect reduction of the core in the upper part. As a result, the production efficiency is improved and the operation is stabilized.

9. 发明专利

JPH04365807A METHOD FOR PREDICTING LOWERING OF FURNACE HEAT ACCOMPANYING WALL FALLING IN HIGH TEMPERATURE FURNACE 失效
公开(公告)号：JPH04365807A
公开(公告)日：1992-12-17
申请号：JP27333391
申请日：1991-09-24
申请人： KOBE STEEL LTD
发明人： MAKI GOJI , MIYATANI HITOSHI , FUJIKAWA MITSUAKI , NAGAI NOBUYUKI , ARAI AKIO , SUZUKI AKIO
IPC分类号： C21B5/00 , F27D1/00 , F27D21/00
摘要： PURPOSE:To provide a method which can accurately predict the lowering of furnace heat accompanying wall falling in a high temp. furnace. CONSTITUTION:Plural numbers of temp. measuring sensors 1 providing plural measuring points in a longitudinal direction are embedded in the height direction and the peripheral direction of refractory wall in the high temp. furnace 2 so that the most tip parts are in the vicinity of the working face of the furnace wall or the inside of the furnace, and by using temp. data at the sound measuring points among the measuring points, the standard deviation is calculated at every fixed interval of period and this standard deviation is compared with a separately set threshold value. Based on this result, a flag is set to each detecting sensor 1 and by accumulately calculating the value multiplying the coefficient of weight in each sensor 1 to this flag, this is defined as the evaluation point, and by this evaluation point, the presence and the degree of the lowering of furnace heat are predicted.

10. 发明专利

JPH04362108A DEVICE FOR SPRAYING WATER IN BLAST FURNACE 失效
公开(公告)号：JPH04362108A
公开(公告)日：1992-12-15
申请号：JP13904591
申请日：1991-06-11
申请人： KOBE STEEL LTD
发明人： MIYATANI HITOSHI
IPC分类号： C21B5/00 , C21B7/00
摘要： PURPOSE:To allow the smooth conduction of the blow-down operation to lower the stock line while suppressing the water gas reaction of cooling water and red hot coke without requiring excessively increasing a cooling capacity and without inducing troubles, such as clogging of tuyeres. CONSTITUTION:This device for spraying water into a blast furnace is constituted by providing water feed pipings 2 at prescribed intervals in a circumferential direction and freely movably upward and downward within the perpendicular plane parallel with the axial line of the blast furnace and fixing water spraying nozzles 1 directing the furnace top direction to the front ends of these water feed pipings.

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