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1. 发明专利

JP2003155508A INSTRUMENT FOR MEASURING POTENTIAL DIFFERENCE AT BOTTOM IN BLAST FURNACE AND METHOD FOR ESTIMATING PIG IRON SLAG HEIGHT IN BLAST FURNACE 审中-公开
公开(公告)号：JP2003155508A
公开(公告)日：2003-05-30
申请号：JP2001356907
申请日：2001-11-22
申请人： NIPPON STEEL CORP
发明人： KUNITOMO KAZUYA , FUJIWARA YUTAKA , SUGIURA MASAHITO , KOMINAMI HIDETAKA , NAKAMURA KIICHIRO
IPC分类号： C21B7/24
摘要： PROBLEM TO BE SOLVED: To provide a method and an instrument with which pig iron slag height in a blast furnace can accurately be estimated. SOLUTION: The instrument for measuring potential difference at the furnace bottom in the blast furnace has the peculiarity with which a plurality of measuring points 11 are arranged on a bottom brick 2 in the blast furnace with an interval in the vertical direction, and lead wires 12 extending from the potential measuring points 11 to the outer part of the blast furnace body are arranged, and the potential difference between the potential measuring points 11 by using the lead wires 12 is measured. The lead wire 12 is made to abut a sheath part 21 at the tip part of a metallic sheath thermocouple 20 inserted from the outer part of the blast furnace body to the potential measuring point 11 on the bottom brick 2 and extend the sheath part of the metallic sheath thermocouple 20 from the potential measuring point 11 to the outer part of the blast furnace body. The pig iron slag height is estimated based on the potential difference measured with the instrument for measuring the potential difference at the furnace bottom.

2. 发明专利

JP2003201508A ESTIMATION METHOD AND CONTROL METHOD OF VOID RATIO OF BLAST FURNACE HEARTH 审中-公开
公开(公告)号：JP2003201508A
公开(公告)日：2003-07-18
申请号：JP2002002341
申请日：2002-01-09
申请人： NIPPON STEEL CORP
发明人： KUNITOMO KAZUYA , FUJIWARA YUTAKA , SUGIURA MASAHITO , KOMINAMI HIDETAKA , NAKAMURA KIICHIRO
IPC分类号： C21B5/00
摘要： PROBLEM TO BE SOLVED: To provide a means for directly measuring the void ratio of a hearth part in an estimation method and a control method of the void ratio of the blast furnace hearth part. SOLUTION: In the estimation method of the void ratio of the blast furnace hearth part, a plurality of electric potential measurement points are provided in the surface of a blast furnace shell or furnace bottom bricks with intervals in the vertical direction, the differential electric potential between the electric potential measurement points is measured, and the void ratio of the charged stuff in the hearth part is estimated based on the temporal change of the measured differential electric potential when the iron-tapping is not performed in the blast furnace. The temporal change of the measured differential electric potential when the iron-tapping is not performed in the blast furnace and the iron slag production speed are compared, and the void ratio of the charged stuff in the hearth part is estimated based on the result of comparison. The void ratio is estimated by the estimating method of the void ratio of the blast furnace hearth part. In the control method of the void ratio of the blast furnace hearth part, if the estimated void ratio is lower than the preset adequate void ratio, the conditions for charged coke are adjusted to obtain the adequate void ratio. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003034809A Method for discharging pig slag of blast furnace 有权
标题翻译：用于排放烤炉渣的方法
公开(公告)号：JP2003034809A
公开(公告)日：2003-02-07
申请号：JP2001225353
申请日：2001-07-26
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： KUNITOMO KAZUYA , FUJIWARA YUTAKA , SUGIURA MASAHITO , KOMINAMI HIDETAKA , NAKAMURA KIICHIRO
IPC分类号： C21B5/00 , C21B7/24
摘要： PROBLEM TO BE SOLVED: To provide a method for discharging pig slag of a blast furnace, which can avoid troubles associated with rising up of a pig-slag retention level, by continuously and reliably grasping the pig-slag retention level on a hearth part of the blast furnace. SOLUTION: This method is characterized by implementing either a measure for reducing a pig-slag generation rate, or a measure for increasing a pig-slag removal rate, when potential differences measured among several points of the blast furnace body have exceeded the predetermined value.
摘要翻译：要解决的问题：提供一种排放高炉炉渣的方法，其可以通过连续可靠地抓住炉渣部分的炉渣保持水平来避免与炉渣保持水平上升有关的问题高炉。解决方案：该方法的特征在于，当在高炉炉体的几个点之间测量的电位差超过预定值时，实施用于降低炉渣产生速率的措施或提高猪渣去除率的措施。

4. 发明专利

JP2005248292A Method for uniformizing level of pig slag in blast furnace 有权
标题翻译：用于在烤炉中均匀分散铅渣的方法
公开(公告)号：JP2005248292A
公开(公告)日：2005-09-15
申请号：JP2004063451
申请日：2004-03-08
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： KUNITOMO KAZUYA , YOKOYAMA KOICHI , ORIMOTO TAKASHI , SUGIURA MASAHITO , NAKAMURA KIICHIRO
IPC分类号： C21B5/00 , C21B7/24
摘要： PROBLEM TO BE SOLVED: To provide a method for uniformizing the level of pig slag and the flow of a molten metal in a furnace, through quickly detecting the formation of the nonuniform level of the pig slag and the nonuniform flow of the molten metal.
SOLUTION: The method for uniformizing the level of the pig slag in a blast furnace comprises: arranging a plurality of measurement points 11 for an electric potential at a spacing on the surface of a blast furnace shell 1 in a vertical direction; arranging potentiometers 12 for measuring a potential difference between the measurement points 11 for the electric potential, on a plurality of positions of a blast furnace body in the circumferential direction; determining a difference ΔE between a maximum potential difference and a minimum potential difference indicated in each potentiometer 12, at every timing of tapping; and taking an action against the blast furnace for correcting an amplitude of ΔE in accordance with the amplitude of ΔE in each potentiometer. The method further comprises arranging a plurality of the measurement points 11 for the electric potential on the bottom brick 5 of the blast furnace, in place of the surface of the blast furnace shell.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种使炉渣水平均匀化和炉中熔融金属流动的方法，通过快速检测猪渣不均匀程度的形成和熔融的不均匀流动金属。解决方案：使高炉炉渣水平均匀化的方法包括：在高炉壳1的表面上沿垂直方向以间隔布置多个测量点11用于电位; 配置电位计12，用于测量高炉本体的圆周方向的多个位置上的电位的测量点11之间的电位差; 在每次敲击时刻，确定每个电位器12中指示的最大电位差与最小电位差之差ΔE; 并根据每个电位计中的ΔE的振幅，对高炉采取动作来校正ΔE的振幅。该方法还包括在高炉的底砖5上设置多个用于电位的测量点11来代替高炉壳的表面。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2003155507A METHOD FOR ESTIMATING PIG IRON SLAG HEIGHT IN BLAST FURNACE AND ITS ESTIMATING INSTRUMENT 审中-公开
公开(公告)号：JP2003155507A
公开(公告)日：2003-05-30
申请号：JP2001356906
申请日：2001-11-22
申请人： NIPPON STEEL CORP
发明人： SUGIURA MASAHITO , KUNITOMO KAZUYA , FUJIWARA YUTAKA , KOMINAMI HIDETAKA , NAKAMURA KIICHIRO
IPC分类号： C21B5/00
摘要： PROBLEM TO BE SOLVED: To provide a method with which pig iron slag height in a blast furnace can accurately be estimated and an instrument. SOLUTION: This method for estimating the pig iron slag height in the blast furnace have the peculiarity, with which potential differences are measured at a plurality of positions in the circulating direction of the blast furnace, and the pig iron slag height is estimated based on an average value of the potential difference measured values when the potential differences are measured between the a plurality of potential measuring points 11 on the surface of an iron shell 1 in the blast furnace with an interval in the vertical direction. Further, the potential difference at the point of time when the molten iron is completed to tap off, is used for a basis potential difference E0 , and the pig iron slag height is estimated based on a raising value ΔE of the potential difference from the basis potential difference E0 . Instead of the surface of the iron shell, a plurality of potential measuring points 11 are arranged at a furnace bottom brick 5 in the blast furnace.

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