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

JPH05239513A 失效
公开(公告)号：JPH05239513A
公开(公告)日：1993-09-17
申请号：JP5569691
申请日：1991-02-28
申请人： NIPPON STEEL CORP
发明人： KAKIUCHI KAZUMOTO , MATSUI AKIRA , NAKAYAMA MASAAKI , YAMAGUCHI KAZUNARI
IPC分类号： C21B5/00
摘要： PURPOSE:To eliminate trouble at the operation of the blast furnace whose type is of an auxiliary fuel blowing-in from tuyere. CONSTITUTION:When a weight ratio of ore to coke quantity charged from a furnace top exceeds five at the operation of the blast furnace where type is of an auxiliary fuel blowing-in from tuyere, change in the lapse of time of the coke grain size charged into blast furnace from a furnace top bunker is adjusted to charge a coarse grain coke into the center part of the blast furnace.

2. 发明专利

JPH0517808A METHOD FOR EVALUATING COMBUSTIBILITY OF PULVERIZED COAL IN BLAST FURNACE 失效
公开(公告)号：JPH0517808A
公开(公告)日：1993-01-26
申请号：JP19745491
申请日：1991-07-12
申请人： NIPPON STEEL CORP
发明人： SEKIYA MASAHIRO , MATSUI AKIRA , SHIRAKAWA YOSHIYUKI
IPC分类号： C21B5/00 , C21B7/00 , G01J5/00 , G01J5/10 , G01J5/48
摘要： PURPOSE:To evaluate the combustibility of pulverized coal in a tuyere so that the threshold of a blowing quantity can be known by estimating an isothermal face solid volume from the image of the radiation temp. camera provided in the tuyere and comparing this volume with a raceway volume. CONSTITUTION:The radiation temp. camera 1 is installed in the tuyere 7 of a blast furnace and the signal thereof is converted to a temp. by an image processor 2. The converted temps. at the respective points in the tuyere 7 are divided to several temp. regions by an image analyzer 3 which calculates the area by each temp. region and converts the combustibility of the pulverized coal to be blown from a lance 6 to an index. The combustion shape of the pulverized coal is estimated from the area of the region where the temp. in the tuyere of the combustion image of the pulverized coal is below a certain temp. Further, the isothermal face solid volume enclosed by the certain temp. necessary for the pulverized coal to burn completely is estimated from the area of the solid of the combustion shape. This volume is compared with the raceway volume in the tuyere 7 and the combustibility of the pulverized coal is evaluated. The threshold of the blowing quantity of the pulverized coal which burns completely is known in this way.

3. 发明专利

JPH0693317A CONTROL METHOD FOR BLOWING PULVERIZED COAL FROM TUYERE IN BLAST FURNACE 失效
公开(公告)号：JPH0693317A
公开(公告)日：1994-04-05
申请号：JP19745591
申请日：1991-07-12
申请人： NIPPON STEEL CORP
发明人： SEKIYA MASAHIRO , MATSUI AKIRA , SHIRAKAWA YOSHIYUKI
IPC分类号： C21B5/00 , C21B7/00 , G01J5/00 , G01J5/02 , G01J5/48
摘要： PURPOSE:To automatically decide the clogging of a lance and the erosion of a tuyere wall caused by inclination of the lance and to give the warning, at the time of blowing the pulverized coal from the tuyere into a blast furnace. CONSTITUTION:In the case of executing picture analysis of the temp. distribution in the tuyere 7 in the blast furnace by means of a radiation temp. camera 1 set at the tuyere, by noticing the unburnt range of the pulverized coal, the clogging of the lance 1 and the crosion of the tuyere caused by the inclination of the lance are estimated from its position and inclination extent.

4. 发明专利

JPH05239511A 失效
公开(公告)号：JPH05239511A
公开(公告)日：1993-09-17
申请号：JP5569391
申请日：1991-02-28
申请人： NIPPON STEEL CORP , NITTETSU PLANT DESIGNING CORP
发明人： INOUE TSUYOSHI , NAKAYAMA MASAAKI , MATSUI AKIRA , KAKIUCHI KAZUMOTO , IKEZAKI YUZURU
IPC分类号： C21B5/00
摘要： PURPOSE:To blow in either a large volume of powdery body or plural kinds of powdery materials through a single burner at each tuyere by effectively utilizing an existing powder transportation line without under-taking a large scale modification of the apparatus. CONSTITUTION:By providing two systems of the plural blowing-in transportation lines 2A, 2B arranged at each blast furnace tuyere 4, and by joining each of the transportation lines mutually at the mixer 6, either a large volume of powdery body or plural kinds of powdery bodies are blown-in by a single burner 5 at the each tuyere 4.

5. 发明专利

JPH0533022A APPARATUS FOR INJECTING POWDERY MATERIAL INTO TUYERE IN BLAST FURNACE 失效
公开(公告)号：JPH0533022A
公开(公告)日：1993-02-09
申请号：JP21318791
申请日：1991-07-31
申请人： NIPPON STEEL CORP , NITTETSU PLANT DESIGNING CORP
发明人： INOUE TSUYOSHI , MATSUI AKIRA , KASAI KATSUTERU , IKEZAKI YUZURU
IPC分类号： C21B5/00
摘要： PURPOSE:To shorten working term and to reduce danger of gas poisoning at the time of checking and repairing by dividing a distributor into two steps and distributing powdery material discharged from a feed tank into plural tuyere burners. CONSTITUTION:On the way of dividing injecting piping 5 at each tuyere 1 in a blast furnace, while the powdery material carries from the feed tank 2 for pressurize-feeding the powdery material with one piece of a transport line 3, a first step of the distributor 6 is set. The powdery material is divided into plural pieces of injecting pipings 4 through the first step of distributor 6. Further, this is finally divided into the injecting pipings 5 arranged as the same number as number of the tuyeres through a second step of distributor 7 at end part of the injecting piping 4. By this method, working quantity is lessened, and the working term can be shortened.

6. 发明专利

JPH1129805A SWING CHUTE FOR VERTICAL TYPE FURNACE 失效
公开(公告)号：JPH1129805A
公开(公告)日：1999-02-02
申请号：JP19915697
申请日：1997-07-10
申请人： NIPPON STEEL CORP
发明人： YAMAMOTO KEIJI , MATSUI AKIRA , AKAGI KAZUSHI , KUMAOKA TAKASHI , MATSUNAGA SHINICHI
IPC分类号： C21B7/20
摘要： PROBLEM TO BE SOLVED: To provide a chute for charging raw material which restrains the flow of the raw material in a furnace wall direction after charging and can form the uniform and stable piling layer of the raw material, related to the swing chute used in the case of charging ore, coke, etc., into a vertical furnace of a blast furnace, etc., from a raw material storing hopper, etc. SOLUTION: (1) A bending reflecting plate 2 is arranged at the tip part 5 of a chute body 1 having a groove type cross section opened on the top part. (2) The reflecting plate which reduces the kinetic energy, in the tangential direction of a chute swinging locus, of the charged powdery and granular raw material at the time of swinging the chute and has the curved surface or polygonal shape so as to form uniform piling shape along the chute swinging locus, is arranged at the tip part of the chute body having the groove type cross section opened on the top part.

7. 发明专利

JPH05179319A BLAST FURNACE OPERATING METHOD 失效
公开(公告)号：JPH05179319A
公开(公告)日：1993-07-20
申请号：JP1817592
申请日：1992-01-06
申请人： NIPPON STEEL CORP
发明人： ICHIDA MORIMASA , YAMAGUCHI KAZUYOSHI , TAMURA KENJI , NAKAYAMA MASAAKI , MATSUI AKIRA
IPC分类号： C21B5/00
摘要： PURPOSE:To provide the method for controlling the pressure drops in the lower parts of blast furnaces at the time of a high O/C operation by blowing a large amt. of pulverized coal. CONSTITUTION:The range of the CB (coke base) determined for every blast furnace is so set that the pressure drops in the lower parts of the furnaces enter an adequate range from the relation between the CB and the pressure drops in the lower parts of the furnaces at the time of the high O/C operation by blowing the large amt. of the pulverized coal. The CBs are controlled in such a manner as to enter the set range, by which the stable operation at the time of blowing the large amt. of the pulverized coal is possible.

8. 发明专利

JPS6217105A METHOD FOR CHARGING RAW MATERIAL TO BLAST FURNACE 失效
公开(公告)号：JPS6217105A
公开(公告)日：1987-01-26
申请号：JP15406385
申请日：1985-07-15
申请人： NIPPON STEEL CORP
发明人： OGATA ISAO , MATSUI AKIRA
IPC分类号： C21B5/00
摘要： PURPOSE:To maintain a blast furnace operation stable for a long period of time by dividedly charging iron ore per one charge to >=2 plural batches and charging a suitable amt. of coke between batches thereby forming coke interposing layers between the iron ore layers. CONSTITUTION:The charging pattern of the ore 1 is set by dividing the charging per one charge of the ore to at least plural batches in a method for charging raw materials to a blast furnace to charge the iron ore and coke into a laminar state. For example, the charging of the ore is divided to two batches and the coke 2 is charged between the charge of the 1st batch and the charge of the 2nd batch to form the coke interposing layer 3 between the ore layer 10a charged in the 1st batch and the ore layer 10b charged in the 2nd batch. Part of the coke forming a coke layer 20a used in an ordinary operation is used for the coke for forming the coke interposing layer 3.

9. 发明专利

JP2000282119A STAVE FOR COOLING FURNACE WALL OF BLAST FURNACE 失效
公开(公告)号：JP2000282119A
公开(公告)日：2000-10-10
申请号：JP8759499
申请日：1999-03-30
申请人： NIPPON STEEL CORP
发明人： TSUDA AKIHIRO , KUZE SHUNSUKE , NAKAGOME TOMOMICHI , MATSUI AKIRA
IPC分类号： C21B7/10 , F27B1/24
摘要： PROBLEM TO BE SOLVED: To provide a stave for cooling the furnace wall of a blast furnace which can be stood up to use for a long period by adopting a strong structure. SOLUTION: In the stave made of copper or an alloy consisting essentially of copper for cooling the furnace bottom or the furnace body, the stave body 1 and the output parts of water supplying and draining tubes 2 are formed as an integral structure, and the jointing part between the water supplying and draining output tube and the water supplying and draining piping, is arranged at the furnace outside on the side wall iron shell of the blast furnace. Further, in addition to, plural load supporting points 8 in direct contact with the side wall iron shell of the blast furnace, are disposed at the four corners of the stave or in the inner part thereof. Since the strength of the water supplying and draining output tube is improved and the expanding pressure of a brick is uniformly transferred to the iron shell, the reliability of the copper-made stave can be improved by avoiding the stress concentration to the water supplying and draining output tube.

10. 发明专利

JPH0625369B2 失效
公开(公告)号：JPH0625369B2
公开(公告)日：1994-04-06
申请号：JP15406385
申请日：1985-07-15
申请人： NIPPON STEEL CORP
发明人： OGATA ISAO , MATSUI AKIRA
IPC分类号： C21B5/00

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