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Stave and blast furnace

A stave and blast furnace technology, applied in cooling devices, furnace cooling devices, furnaces, etc., can solve problems such as stave surface loss, and achieve the effects of reducing mechanical wear, preventing wear, and inhibiting wear

Active Publication Date: 2012-11-07
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, after a certain period of refractory brick loss, the surface of the stave is lost

Method used

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  • Stave and blast furnace
  • Stave and blast furnace
  • Stave and blast furnace

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach 〕

[0058] exist figure 1 Among them, a blast furnace 1 has a cylindrical furnace body 2 constructed on a foundation foundation.

[0059] The furnace body 2 is cylindrical, and is sequentially divided into the furnace mouth part S1, the furnace body part S2, the furnace belly part S3, the furnace waist part S4, the tuyere part S5 and the furnace bottom part S6 starting from the upper gas collection furnace ring beam shell 3. Generally, the inner diameter of the shaft portion S2 gradually expands downward, the inner diameter of the belly portion S3 becomes the largest diameter, and the inner diameter of the belly portion S4 gradually decreases downward.

[0060] In the furnace body 2 , a charging device is usually provided on the ring beam shell 3 of the gas-collecting furnace, and a granular charging material 4 is charged into the blast furnace 1 from the charging device. As the charge 4, an ore-based charge with a particle size in the range of 8 to 25 mm and a coke-based charge ...

no. 2 Embodiment approach 〕

[0124] Figure 11 , Figure 12 and Figure 13 The second embodiment of the present invention is shown.

[0125] The stave 20 for shafts of this embodiment can be used as the stave 2B for shafts in the blast furnace 1 of said 1st Embodiment. The structure of the blast furnace 1 is the same as that of the said 1st Embodiment, and the basic structure of the stave 20 for shafts of this embodiment is the same as the stave 10 for shafts of the said 1st Embodiment. Therefore, description is abbreviate|omitted about the common part with the stave 10 of the said 1st Embodiment, and only a different part is demonstrated below.

[0126] exist Figure 11 , Figure 12 and Figure 13 Among them, the shaft stave 20 has the same stave main body 11 as the shaft stave 10 of the first embodiment, a bolt support portion 11A, a protrusion 12, a plane 13, a refractory brick 15, a pipeline 16 and Connection port 16A. However, in the stave 10 for shafts of said 1st Embodiment, the piping 17 f...

no. 3 Embodiment approach 〕

[0130] Figure 14 , Figure 15 and Figure 16 The third embodiment of the present invention is shown in .

[0131] The stave 30 for shafts of this embodiment can be used as the stave 2B for shafts in the blast furnace 1 of said 1st Embodiment. The structure of the blast furnace 1 is the same as that of the said 1st Embodiment, and the basic structure of the stave 30 of this embodiment is the same as the stave 10 for shafts of the said 1st Embodiment. Therefore, description is abbreviate|omitted about the common part with the stave 10 for shafts of said 1st Embodiment, and only a different part is demonstrated below.

[0132] exist Figure 14 , Figure 15 and Figure 16 Among them, the stave 30 for shafts has the same stave main body 11, bolt support part 11A, plane 13, refractory brick 15, piping 16, and connection port 16A as the stave 10 for shafts of the said 1st Embodiment. However, the stave 30 for a shaft of this embodiment is not like the stave 10 for a shaft of ...

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Abstract

Disclosed is a shaft stave which is provided on the inner periphery of a blast furnace shaft, and which has: a stave main body which has a reference surface facing the internal space of the blast furnace; and a plurality of protrusions which protrude from the reference surface towards the internal side of the furnace.

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2010-036841 for which it applied on February 23, 2010, and uses the content here. Background technique [0002] Most of the existing blast furnaces adopt the following structure: a stave is installed inside the iron sheet (shell), and a refractory brick is arranged inside it. The inner surface of the blast furnace is exposed to the high temperature in the furnace, and at the same time, it is exposed to the charging material (burden charge) that descends in the furnace, thereby undergoing mechanical wear and tear. Moreover, after a certain period of time passes and the refractory brick wears out, the surface of the stave wears out. In order to deal with such loss, the structure which formed the recessed part in the surface of the furnace inner side of a stave, and embedded a refractory material etc. in this recessed part was developed (refer patent document 1). [0003] prior ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/10
CPCC21B7/10F27B1/24F27D1/12
Inventor 阿南邦义中马俊之门胁正具赤木一志
Owner NIPPON STEEL CORP
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