JPS6159365B2 - - Google Patents
Info
- Publication number
- JPS6159365B2 JPS6159365B2 JP15184679A JP15184679A JPS6159365B2 JP S6159365 B2 JPS6159365 B2 JP S6159365B2 JP 15184679 A JP15184679 A JP 15184679A JP 15184679 A JP15184679 A JP 15184679A JP S6159365 B2 JPS6159365 B2 JP S6159365B2
- Authority
- JP
- Japan
- Prior art keywords
- brickwork
- tuyere
- thickness
- around
- hearth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011449 brick Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/48—Bottoms or tuyéres of converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Description
【発明の詳細な説明】
本発明は、底吹転炉、又は上吹、底吹併用転炉
の炉底における羽口部分の煉瓦積構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brickwork structure of a tuyere portion at the bottom of a bottom-blown converter or a combined top-blown and bottom-blown converter.
底吹転炉において、煉瓦積寿命は羽口近傍の煉
瓦の寿命に支配される。即ち羽口部及び羽口部近
傍の煉瓦の寿命は、耐火物の材質、冷却用保護ガ
スによる冷却の程度によつて支配されるが、現状
の技術レベルではそれも限界がある。したがつて
炉底を交換する方式が採用されている。しかし、
この方式においても、更に炉底寿命を延ばすこと
は操業上有利なことは云うまでもない。 In a bottom-blown converter, the life of the brickwork is controlled by the life of the bricks near the tuyere. That is, the life of the tuyeres and the bricks near the tuyeres is controlled by the material of the refractory and the degree of cooling by the cooling protective gas, but these also have limits at the current technological level. Therefore, a method of replacing the hearth bottom has been adopted. but,
It goes without saying that even in this method, it is advantageous for operation to further extend the life of the hearth bottom.
本発明は、炉底分離形式、非分離形式を問はず
採用できる炉底寿命延長の煉瓦積である。 The present invention is a brickwork that extends the life of the hearth and can be adopted regardless of whether the hearth is separated or not.
すなわち本発明の要旨は多数の炉底羽口を有す
る転炉において、羽口周囲の煉瓦積厚さを、他の
部分の煉瓦積厚さより一定範囲で厚くすることに
ある。しかして望ましい厚さの範囲としては、次
式の通りである。 That is, the gist of the present invention is to make the thickness of the brickwork around the tuyeres thicker within a certain range than the thickness of the brickwork in other parts in a converter having a large number of hearth bottom tuyeres. However, the desirable thickness range is as shown in the following equation.
Ｄ／ｄ＝４〜25、 Ｔ／ｔ＝1.1〜1.8 ここで Ｄ：羽口周囲の煉瓦積径 ｄ：羽口部耐火物の内径 Ｔ：羽口周囲の煉瓦積全厚さ ｔ：他の部分の煉瓦積全厚さ 以下本発明を図面に基づいて説明する。 D/d=4~25, T/t=1.1~1.8 Here, D: Brick pile diameter around the tuyere d: Inner diameter of tuyere refractory T: Total thickness of brickwork around the tuyere t: Total thickness of brickwork in other parts The present invention will be explained below based on the drawings.
第１図、第２図の転炉１の炉底２において、３
は羽口で、４は精錬用ガス、及び冷却用保護ガス
の配管である。５は羽口部周囲の煉瓦積でその厚
さＴは他の部分６の厚さｔよりも厚くなつてい
る。即ちＴ＝（1.1〜1.8）ｔである。又羽口部耐
火物の内径ｄと５の外径Ｄとの関係はＤ＝（４〜
25）ｄである。今ここでＴを余り厚くすることは
煉瓦積強度を減ずることになり好ましくない。次
に実炉において本発明を適用した例を次下に示
す。 At the hearth bottom 2 of the converter 1 in FIGS. 1 and 2, 3
4 is a tuyere, and 4 is a pipe for refining gas and cooling protective gas. Reference numeral 5 denotes brickwork around the tuyere portion, and its thickness T is thicker than the thickness t of the other portion 6. That is, T=(1.1-1.8)t. Also, the relationship between the inner diameter d of the tuyere refractory and the outer diameter D of 5 is D=(4~
25) It is d. It is not preferable to make T too thick at this point because it will reduce the brickwork strength. Next, an example in which the present invention is applied in an actual furnace is shown below.
羽口部耐火物の内径d40mmφに対し、Ｄを600
mmφとし、羽口周囲部以外の煉瓦積厚さｔを900
mmに対しＴを1200mmとした場合、850回のチヤー
ジにおいて、５の煉瓦積厚さが６の煉瓦積厚さと
略同一厚さになつたことを確認した。 For the inner diameter d40mmφ of the tuyere refractory, D is 600
mmφ, and the brick wall thickness t other than the area around the tuyere is 900
When T was set to 1200 mm for mm, it was confirmed that the brickwork thickness of No. 5 became approximately the same as the brickwork thickness of No. 6 after 850 charges.
以上のとおり本発明は簡単な炉底煉瓦積構造に
より炉体自体の寿命を延長することが可能とな
り、実用性が極めて大きいものである。 As described above, the present invention makes it possible to extend the life of the furnace body itself with a simple hearth brickwork structure, and is extremely practical.
第１図、第２図は本発明の側面図、及び平面
図。
１……転炉、２……炉底、３……羽口、４……
〓〓〓〓
配管、５……羽口部周囲の煉瓦積、６……他の部
分の煉瓦積。
〓〓〓〓
FIGS. 1 and 2 are a side view and a plan view of the present invention. 1... Converter, 2... Hearth bottom, 3... Tuyere, 4...
〓〓〓〓
Piping, 5...Brickwork around the tuyeres, 6...Brickwork in other parts. 〓〓〓〓
Claims (1)
口周囲の煉瓦積厚さを、他の部分の煉瓦積厚さよ
り次式の範囲で厚くした転炉炉底の煉瓦積構造。 Ｄ／ｄ＝４〜25、 Ｔ／ｔ＝1.1〜1.8 Ｄ：羽口周囲の煉瓦積径 ｄ：羽口部耐火物の内径 Ｔ：羽口周囲の煉瓦積全厚さ ｔ：他の部分の煉瓦積全厚さ[Claims] 1. In a converter having a large number of hearth bottom tuyeres, the thickness of the brickwork around each tuyere is thicker than the brickwork thickness of other parts within the range of the following formula. Brick structure. D/d=4~25, T/t=1.1~1.8 D: Diameter of brickwork around the tuyere d: Inner diameter of tuyere refractory T: Total thickness of brickwork around the tuyere t: Other parts Total thickness of brickwork
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15184679A JPS5675510A (en) | 1979-11-22 | 1979-11-22 | Brick masonry structure of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15184679A JPS5675510A (en) | 1979-11-22 | 1979-11-22 | Brick masonry structure of converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5675510A JPS5675510A (en) | 1981-06-22 |
| JPS6159365B2 true JPS6159365B2 (en) | 1986-12-16 |
Family
ID=15527547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15184679A Granted JPS5675510A (en) | 1979-11-22 | 1979-11-22 | Brick masonry structure of converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5675510A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617241Y2 (en) * | 1981-05-08 | 1986-03-05 | ||
| JP5391810B2 (en) * | 2009-04-28 | 2014-01-15 | 新日鐵住金株式会社 | Structure of gas blowing part of molten metal container |
-
1979
- 1979-11-22 JP JP15184679A patent/JPS5675510A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5675510A (en) | 1981-06-22 |
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