WO2006077786A1 - 絞り部構造を有する炉の逆傾斜ライニング構造 - Google Patents
絞り部構造を有する炉の逆傾斜ライニング構造 Download PDFInfo
- Publication number
- WO2006077786A1 WO2006077786A1 PCT/JP2006/300425 JP2006300425W WO2006077786A1 WO 2006077786 A1 WO2006077786 A1 WO 2006077786A1 JP 2006300425 W JP2006300425 W JP 2006300425W WO 2006077786 A1 WO2006077786 A1 WO 2006077786A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- furnace
- lining
- throttle
- brick
- bricks
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/12—Working chambers or casings; Supports therefor
- F27B3/14—Arrangements of linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
-
- 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
- C21C5/44—Refractory linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/12—Shells or casings; Supports therefor
- F27B1/14—Arrangements of linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
Definitions
- the present invention relates to a reverse inclined lining structure of a furnace having a drawing structure such as a converter, an AOD furnace, a hot metal pretreatment furnace, a kneading vehicle, and the like.
- the present invention relates to new improvements to prevent brick cracking and achieve stable operation.
- a horizontally stacked lining structure in which the lining bricks of the constricted portions are stacked in parallel with the lining bricks that are lined perpendicularly to the core barrel core, or A central axial force in the direction of the thickness of the lining brick in the throttle part.
- the base of the throttle that is, the lining brick of the throttle close to the straight barrel, may crack and fall off.
- Patent Documents 1 and 2 illustrate an inclined stacking structure and a horizontal stacking structure.
- Patent Document 3 exemplifies an inclined lining structure in which bricks are stacked perpendicularly to the iron surface of the throttle part.
- Patent Document 4 exemplifies a horizontally stacked lining structure.
- Patent Document 5 exemplifies a horizontal stacking lining structure, in which stacking is performed so that the angle formed between the axis and the lining brick is smaller than the angle formed between the furnace axis and the drawn iron core.
- a featured patent is disclosed.
- Patent Document 6 can be related to the AOD furnace
- Patent Document 7 can be related to the chaotic vehicle.
- Patent Document 1 Japanese Utility Model Publication No. 61-159357
- Patent Document 2 Japanese Patent Laid-Open No. 2003-231910
- Patent Document 3 Japanese Utility Model Publication No. 3-67050
- Patent Document 4 JP-A-5-279719
- Patent Document 5 Japanese Patent Laid-Open No. 7-3321
- Patent Document 6 Japanese Patent Laid-Open No. 7-224316
- Patent Document 7 JP-A-8-176634
- the slanted stacking reduces the stress associated with the cracks in the bricks, and it is easier to create a gap between the bricks in the throttle than in the horizontal stacking.
- the reverse inclined lining structure of the furnace having the throttle structure according to the present invention is the central axis of the brick in the thickness direction of the inner brick to be constructed inside the throttle section in the throttle structure of the furnace having the straight body portion and the throttle portion.
- the lining bricks are stacked so as to be positioned on the acute angle side between and the thickness direction central axis forms a reverse inclination angle of 5 to 30 degrees with respect to the vertical direction axis.
- the furnace is any one of a converter, an AOD furnace, a kneading car, and a hot metal pretreatment furnace. is there.
- the invention's effect is any one of a converter, an AOD furnace, a kneading car, and a hot metal pretreatment furnace. is there.
- the inversely inclined lining structure of the furnace having the throttle structure according to the present invention is configured as described above, the following effects can be obtained.
- the stacking structure of the furnace lining bricks such as converters, AOD furnaces, hot metal pretreatment furnaces, kneading vehicles, etc. Since the furnace can be used, the effect of significantly shortening the construction time can be obtained.Breaking of the brick is prevented without stress concentration due to expansion of the brick during use. Since there is no gap, stable operation is possible, and repair work that has been carried out in the past for damage or falling off of bricks and the need for repair materials are significantly improved. Can now get.
- FIG. 1 is a cross-sectional view of a main part showing a reverse inclined lining structure of a furnace having a throttle structure according to the present invention.
- FIG. 2 is an enlarged cross-sectional view of the main part of FIG.
- FIG. 3 is a cross-sectional view showing another embodiment of FIG.
- FIG. 4 is a cross-sectional view showing another embodiment of FIG.
- FIG. 5 is a cross-sectional view showing another embodiment of FIG.
- FIG. 6 is an enlarged cross-sectional view showing the raised brick of FIG.
- FIG. 7 is a cross-sectional view showing another embodiment of FIG.
- FIG. 8 is an overall configuration diagram showing how to determine the reverse inclination angle of the reverse inclination product of the main part of FIG.
- FIG. 9 is an enlarged view of the main part of FIG.
- FIG. 10 is a cross-sectional view showing the structure of a chaotic vehicle to which the structure of FIG. 1 is applied.
- the present invention provides a lining that can be easily constructed without shifting or dropping off the bricks in the furnace construction by using a reverse-tilt stacking structure for the lining bricks of the furnace.
- Inclined lining structure for furnaces that has a constricted section structure that prevents cracking of bricks without causing stress concentration due to expansion, and in which no gaps form between the constricted section bricks during use. The purpose is to obtain.
- brick building of the furnace 20 is performed from the bottom 20a of the furnace 20 upward.
- the perm lining 2 and the wafer lining 3 are installed inside the iron skin 1.
- This perma lining 2 may be a fixed refractory, or an irregular refractory, such as a castable, stamp material, or filler.
- the wear lining 3 is a brick having a predetermined shape.
- These permanent lining 2 and wear lining 3 are constructed from the furnace bottom 4 with the furnace 20 standing as shown in Fig. 1, and the furnace bottom 4, the lower corner part 5, and the straight body part 6 are installed in this order. It is constructed on the top.
- the throttle part 7 is constructed.
- the brick 7a of the wear lining 3 of the throttle section 7 is constructed by the reverse inclined product lining according to the present invention, and further, the furnace die 8 is formed thereon.
- the inner brick 7a of the wear lining 3 that has the inversely inclined product of the throttle 7 can be smoothly stacked on both the furnace inner surface 7aA (working surface) and the rear surface 7aB. Can be stacked with steps as shown in FIGS. However, since the projecting portion of the step is easily broken during use, it is desirable that the construction shown in FIG. 2 in which the inner surface 7aA of the inner brick 7aA applied to the throttle 7 has no step is better.
- the reverse inclination angle in the reverse inclination lining by the lining bricks 7a formed in the throttle portion 7 is determined as follows. In the furnace perpendicular to the core 1 of the straight body 6 in Figs. 8 and 9 The acute angle side 13 of the angle formed by the vertical axis 11 directed toward the surface 7aA and the height direction axis 12 directed in the height direction along the iron skin 1 of the throttle 7 is defined as the throttle 7
- the arrangement of the lining bricks 7a through which the central axis 14 in the thickness direction passes is the inversely inclined product. It should be noted that the construction in which the central axis 14 in the thickness direction of the inner brick 7a passes through the obtuse angle side 15 in FIG. 9 is an inclined product.
- the reverse tilt angle 16 that is the angle between the thickness direction central axis 14 and the vertical axis 11 of the brick 7a in FIG. 9 is effective at any angle if it is reverse tilt, but preferably 5-30. The degree is optimal. If the angle is less than 5 degrees, the effect of the present invention is that the lining brick 7a is cracked and the lining brick is less effective in suppressing the gap formation between 7a, and the lining brick is likely to fall off 7a. However, even if the angle exceeds 30 degrees, for example, dowels (not shown) may be provided on both the upper and lower surfaces of the lining brick 7a to prevent the lining brick 7a from falling off during operation.
- the construction method of the present invention can be effective when used in a converter having a throttle structure, an AOD furnace, a kneading vehicle, a hot metal pretreatment furnace, and the like.
- Table 1 shows the results of experiments using a plurality of types of furnaces to which the reverse inclined lining structure of the furnace having the throttle structure according to the present invention is applied.
- the construction time ratio of the throttle part in Table 1 is the construction time including the preparation in the throttle part when the inclined product construction was performed as a comparative example in the same furnace as the present invention. It is the ratio when the construction time including preparations is divided. When the ratio is 100, the smaller the numerical value, as in the comparative example, indicates that the construction time is shorter and better.
- the degree of damage caused by cracking in the drawn part bricks in Table 1 is the damage rate (mmZch) caused by cracking damage in the drawn part bricks when the inclined product was installed as a comparative example in the same furnace as the present invention. It is a degree display when dividing the crack damage rate of brick. When the degree is 100, it is the same as the comparative example, and the smaller the value, the smaller the crack damage rate and the better.
- the degree of squeezed bricks is the number of squeezed bricks dropped over one furnace when the slope construction is carried out as a comparative example in the same furnace as the present invention. It is a degree display when the number is divided. When the degree is 100, it is the same as the comparative example, and the smaller the value, the smaller the crack damage rate and the better. Therefore, as can be seen from Table 1, all the examples of the present invention are superior to the comparative examples.
- the reversely inclined lining structure of the furnace having the throttle structure according to the present invention can be applied to all other furnaces using lining bricks.
- FIG. 10 is a cross-sectional view showing a structure in which the present invention is applied to the lining of the chaotic wheel 30. The same parts as those in FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2006207148A AU2006207148B2 (en) | 2005-01-20 | 2006-01-16 | Reverse slant lining structure of furnace with reduced part structure |
EP06711706.9A EP1852666B1 (en) | 2005-01-20 | 2006-01-16 | Reverse slant lining structure of furnace with reduced part structure |
KR1020077018885A KR101223869B1 (ko) | 2005-01-20 | 2006-01-16 | 감쇠부 구조를 갖는 노 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-013110 | 2005-01-20 | ||
JP2005013110A JP4469731B2 (ja) | 2005-01-20 | 2005-01-20 | 絞り部構造を有する炉 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006077786A1 true WO2006077786A1 (ja) | 2006-07-27 |
Family
ID=36692176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/300425 WO2006077786A1 (ja) | 2005-01-20 | 2006-01-16 | 絞り部構造を有する炉の逆傾斜ライニング構造 |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1852666B1 (ja) |
JP (1) | JP4469731B2 (ja) |
KR (1) | KR101223869B1 (ja) |
AU (1) | AU2006207148B2 (ja) |
TW (1) | TW200641316A (ja) |
WO (1) | WO2006077786A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008128548A (ja) * | 2006-11-20 | 2008-06-05 | Tsukishima Kankyo Engineering Ltd | 焼却炉の炉壁積みつけ方法および焼却炉 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011162801A (ja) * | 2008-05-20 | 2011-08-25 | Shinagawa Refractories Co Ltd | 逆傾斜フルライニング構造 |
CN101664663B (zh) * | 2008-09-02 | 2012-06-20 | 天津市恒达金属制品有限公司 | 一种耐腐蚀碱锅及其制造工艺 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0682164A (ja) * | 1992-09-07 | 1994-03-22 | Toshiba Ceramics Co Ltd | 円筒状工業炉 |
JP2000035287A (ja) * | 1998-07-16 | 2000-02-02 | Ngk Insulators Ltd | 耐火レンガ及び耐火レンガの施工方法 |
JP2001279319A (ja) * | 2000-03-30 | 2001-10-10 | Kawasaki Steel Corp | ボトム交換型転炉 |
-
2005
- 2005-01-20 JP JP2005013110A patent/JP4469731B2/ja not_active Expired - Fee Related
-
2006
- 2006-01-16 AU AU2006207148A patent/AU2006207148B2/en not_active Ceased
- 2006-01-16 WO PCT/JP2006/300425 patent/WO2006077786A1/ja active Application Filing
- 2006-01-16 KR KR1020077018885A patent/KR101223869B1/ko not_active IP Right Cessation
- 2006-01-16 EP EP06711706.9A patent/EP1852666B1/en not_active Expired - Fee Related
- 2006-01-19 TW TW095102102A patent/TW200641316A/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0682164A (ja) * | 1992-09-07 | 1994-03-22 | Toshiba Ceramics Co Ltd | 円筒状工業炉 |
JP2000035287A (ja) * | 1998-07-16 | 2000-02-02 | Ngk Insulators Ltd | 耐火レンガ及び耐火レンガの施工方法 |
JP2001279319A (ja) * | 2000-03-30 | 2001-10-10 | Kawasaki Steel Corp | ボトム交換型転炉 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1852666A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008128548A (ja) * | 2006-11-20 | 2008-06-05 | Tsukishima Kankyo Engineering Ltd | 焼却炉の炉壁積みつけ方法および焼却炉 |
Also Published As
Publication number | Publication date |
---|---|
EP1852666B1 (en) | 2015-12-23 |
AU2006207148B2 (en) | 2011-05-12 |
EP1852666A4 (en) | 2008-09-10 |
JP2006200824A (ja) | 2006-08-03 |
KR20070099650A (ko) | 2007-10-09 |
EP1852666A1 (en) | 2007-11-07 |
JP4469731B2 (ja) | 2010-05-26 |
TWI351506B (ja) | 2011-11-01 |
KR101223869B1 (ko) | 2013-01-17 |
AU2006207148A1 (en) | 2006-07-27 |
TW200641316A (en) | 2006-12-01 |
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