CN112414108B - Sealing device for ash discharge conical hopper of Maerz kiln - Google Patents
Sealing device for ash discharge conical hopper of Maerz kiln Download PDFInfo
- Publication number
- CN112414108B CN112414108B CN202011406880.4A CN202011406880A CN112414108B CN 112414108 B CN112414108 B CN 112414108B CN 202011406880 A CN202011406880 A CN 202011406880A CN 112414108 B CN112414108 B CN 112414108B
- Authority
- CN
- China
- Prior art keywords
- conical hopper
- kiln
- base plate
- ash
- ash discharge
- 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.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000011449 brick Substances 0.000 claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 10
- 235000011941 Tilia x europaea Nutrition 0.000 description 10
- 239000004571 lime Substances 0.000 description 10
- 238000001354 calcination Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 3
- 238000005338 heat storage Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
-
- 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
- F27B1/21—Arrangements of devices for discharging
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Abstract
The invention discloses a sealing device for an ash discharge conical hopper of a Maerz kiln, which relates to the technical field of kilns and comprises an ash discharge conical hopper arranged above an ash discharge flat plate and a steel foundation base plate for supporting refractory bricks in a kiln shell, wherein the top of the ash discharge conical hopper is provided with a high steel discharge base plate at least 5 cm in vertical height, and the joint of the ash discharge conical hopper and the steel foundation base plate is subjected to full-weld welding; a plurality of triangular rib plates are welded at intervals at the connecting cambered surface of the ash discharging conical hopper and the steel foundation base plate; filling a casting material in a gap formed by the ash discharge conical hopper, the steel foundation base plate and the kiln shell; the casting material completely covers the back welding point and the triangular rib plate of the welding part of the ash discharging conical hopper and the steel foundation base plate; the refractory bricks are laid on the hardened casting material. The invention can solve the problems that the sealing structure of the ash discharge conical hopper of the existing Maiez kiln is easy to crack, generates air leakage and is difficult to maintain, and the normal production of the kiln is greatly influenced.
Description
Technical Field
The invention relates to the technical field of furnace kiln production, in particular to a sealing device of an ash discharge conical hopper in a Mach kiln.
Background
The malz kiln has two chambers, one of which is charged with heat while the other is calcined. The direction is changed once every 14 minutes, the hydraulic valve acts during the direction change to release the kiln pressure, and the position of the flashboard is changed at the same time to realize the conversion between the calcining hearth and the heat storage hearth. In the calcining chamber, coal gas was pressurized by a pressurizing machine, fed from 33 lances to the calcining chamber, and mixed with combustion-supporting air introduced from the upper part of the kiln to be combusted. The flue gas generated by calcination flows to the heat storage chamber through the annular channel and the middle channel, flows upwards under the action of cooling air from bottom to top, stores heat of stones which are just added into the heat storage chamber, and enters the flue gas dust remover after the temperature is reduced. Every cycle the system feeds in raw material three times to the heat accumulation thorax, and when kiln section of thick bamboo was closed the apron and is opened at every turn, in order to avoid the raise dust, the system can promote dust exhausting fan rotational speed. In order to ensure the stable material level, finished products generated by calcination are accurately measured by a material level meter, and the double hydraulic cylinders are used for pushing the ash discharging flat plate to move, so that lime blocks borne by the ash discharging flat plate in the kiln are suspended in the air and fall into a small storage bin at the bottom of the kiln from the edge due to the displacement of the ash discharging flat plate. During the reversing period, the discharging gate plate is opened, and the lime finished product can enter a finished product production line.
In the structural design of the kiln, the top of an ash discharge conical hopper above an ash discharge flat plate in the kiln is connected with a steel foundation base plate for supporting a refractory brick of the Maerz kiln by welding to form a sealing structure. Because the cambered surface of the welding point is in direct contact with the lime finished product material, a certain amount of abrasion is generated on the welding point in the moving process of continuously discharging the finished product lime material column from top to bottom (as shown in an attached figure 1, an attached figure 2 and an attached figure 3). In addition, the sizes of the finished lime particles are different, and the temperature difference of the finished lime is easy to occur through calcination, so that the temperature of materials borne by a welding point of the ash discharging conical hopper is different, and finally, the materials crack under the action of thermal stress, and air leakage is generated.
And go out grey toper hopper on grey dull and stereotyped upper portion and be in the concrete bearing structure of 15 meters platforms of malz kiln, the position is narrow, can't weld at all outside the kiln body, must arrange the material of kiln after, personnel enter the inside processing of kiln, and this maintenance work has greatly influenced the normal production of kiln.
Disclosure of Invention
The invention aims to solve the technical problem of providing a sealing device for an ash discharge conical hopper of a Mailze kiln, which can solve the problems that the sealing structure of the ash discharge conical hopper of the existing Mailze kiln is easy to crack, generates air leakage and is difficult to maintain, and the normal production of the kiln is greatly influenced.
In order to solve the problems, the technical scheme of the invention is as follows: the sealing device for the ash discharging conical hopper of the MailZi kiln comprises an ash discharging conical hopper arranged above an ash discharging flat plate and a steel foundation base plate for supporting refractory bricks of the MailZi kiln in a kiln shell, wherein the top of the ash discharging conical hopper is higher than the steel foundation base plate by at least 5 cm in vertical height, and the joint of the ash discharging conical hopper and the steel foundation base plate is subjected to full-weld welding; a plurality of triangular rib plates are welded at intervals at the connecting cambered surface of the ash discharging conical hopper and the steel foundation base plate; pouring a casting material into a gap formed between the ash discharging conical hopper and the steel foundation base plate as well as the kiln shell; the casting material completely covers the back welding point of the welding part of the ash discharge conical hopper and the steel foundation base plate and the triangular rib plate; and the refractory bricks are laid on the hardened castable.
In the above technical solution, a more specific solution is: the top of the ash discharging conical hopper is 5-7 cm higher than the steel base backing plate in vertical height.
Further: the thickness of the triangular rib plate is 10 cm; the spacing distance between two adjacent triangular rib plates is 40-50 mm.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the invention, the steel tapping base backing plate is arranged on the top of the hopper at a vertical height of 5-7 cm, and meanwhile, a welding point on the top of the conical hopper is not in direct contact with finished lime, so that the cracking factor of the welding point is eliminated, and the phenomena of cracking, powder leakage and air leakage of the welding point of the ash-discharging conical hopper are avoided; the on-site environmental protection is improved, the condition of the Maerz kiln is better improved, and the productivity and the quality are improved, so that the energy waste is avoided; meanwhile, the problem is the common problem of the Mailzier kiln, and the problem is solved, thereby being beneficial to the popularization and the application of the Mailzier kiln in the world all over the world.
Drawings
FIG. 1 is a schematic view of a side welding structure of a tapered hopper above a conventional ash discharge plate;
FIG. 2 is a schematic top view of a side welding structure of a tapered hopper above a conventional ash discharge plate;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 4 is a schematic side view of a cone hopper welded to the upper end of the ash discharge plate according to the present invention;
fig. 5 is an enlarged schematic view of the structure at B in fig. 4.
The reference numbers in the figures denote:
1. a kiln shell; 2. a refractory brick; 3. a steel base plate; 4. a welding point; 5. a conical hopper; 6. discharging the ash flat plate; 7. concrete; 8. a cement foundation; 9. pouring a material; 10. a triangular rib plate; 11. back side welding points.
Detailed Description
The invention is further illustrated with reference to the following figures and examples:
fig. 1, 2 and 3 are schematic diagrams of the ash discharge conical hopper and the accessory structure of the existing malz kiln, and in the structural design of the kiln, the top of the ash discharge conical hopper 5 above an ash discharge flat plate 6 in the kiln is connected with a steel foundation pad 3 of a refractory brick 2 supporting the malz kiln in a kiln shell 1 through welding to form a sealing structure. Because the cambered surface of welding point 4 and lime finished product material direct contact, consequently finished product lime material post is constantly from last removal in-process down the ejection of compact, produces a certain amount of wearing and tearing and because of lime finished product temperature difference to welding point 4, causes the temperature of the material that welding point 4 bore to be different, finally appears the fracture under the effect of thermal stress and produces the air leakage, influences the normal production of kiln.
The sealing device for the ash discharge conical hopper of the malz kiln of fig. 4 and 5 comprises an ash discharge conical hopper 5 arranged above an ash discharge flat plate 6, and a steel foundation pad 3 for supporting a refractory brick 2 of the kiln in a kiln shell 1; the steel foundation base plate 3 is arranged on a cement foundation 8, and the cement foundation 8 is arranged on the concrete 7; the top of the ash discharge conical hopper 5 is raised at a vertical height above the steel foundation slab 3 by at least 5 cm, typically by 5-7 cm, as in fig. 5 d =5-7 cm; the top of the ash discharge conical hopper 5 is in this embodiment 6 cm higher in vertical height than the steel base plate 3.
Performing full-length welding on the joint of the ash-discharging conical hopper 5 and the steel foundation backing plate 3; and (3) welding triangular rib plates 10 with the thickness of 10 cm at the connecting cambered surface of the ash discharging conical hopper 5 and the steel foundation backing plate 3, wherein the interval distance between two adjacent triangular rib plates 10 is 40-50 mm. Filling and leveling the gap between the ash-discharging conical hopper 5 and the steel foundation backing plate 3 and the kiln shell 1, namely a commonly-called 'pit' foundation, by adopting a pouring material 9, and completely covering the back welding point 11 and the triangular rib plate 10 of the part; the refractory bricks 2 are laid on the hardened castable 9.
Claims (3)
1. The utility model provides a malz kiln goes out grey toper hopper sealing device, includes and supports steel basis backing plate (3) of resistant firebrick (2) in ash outlet cone hopper (5), kiln shell (1) of installing in ash outlet flat board (6) top, its characterized in that: the top of the ash discharging conical hopper (5) is higher than the steel foundation base plate (3) by at least 5 cm in vertical height, and the joint of the ash discharging conical hopper (5) and the steel foundation base plate (3) is subjected to full-length welding; a plurality of triangular rib plates (10) are welded at intervals at the connecting cambered surface of the ash discharging conical hopper (5) and the steel foundation base plate (3); pouring castable (9) into gaps among the ash discharging conical hopper (5), the steel foundation base plate (3) and the kiln shell (1); the casting material (9) completely covers a back welding point (11) of a welding part of the ash discharging conical hopper (5) and the steel foundation base plate (3) and the triangular rib plate (10); the refractory bricks (2) are laid on the hardened castable (9).
2. The conical hopper sealing device for the ash discharge of a milz kiln as claimed in claim 1, characterized in that: the top of the ash discharge conical hopper (5) is 5-7 cm higher than the steel base backing plate (3) in vertical height.
3. The mackinz kiln dust extraction cone hopper sealing device according to claim 1 or 2, characterized in that: the thickness of the triangular rib plate (10) is 10 cm; the interval distance between two adjacent triangular rib plates (10) is 40-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406880.4A CN112414108B (en) | 2020-12-04 | 2020-12-04 | Sealing device for ash discharge conical hopper of Maerz kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406880.4A CN112414108B (en) | 2020-12-04 | 2020-12-04 | Sealing device for ash discharge conical hopper of Maerz kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112414108A CN112414108A (en) | 2021-02-26 |
| CN112414108B true CN112414108B (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011406880.4A Active CN112414108B (en) | 2020-12-04 | 2020-12-04 | Sealing device for ash discharge conical hopper of Maerz kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112414108B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789306A (en) * | 2022-03-29 | 2022-07-26 | 广西柳钢新材料科技有限公司 | Lime kiln discharge ash bucket weld joint sealing construction method |
| CN116063009B (en) * | 2023-01-10 | 2024-04-19 | 湖南涟钢冶金材料科技有限公司 | Automatic discharging device of wheat kiln |
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|---|---|---|---|---|
| BR9905849A (en) * | 1999-12-15 | 2000-09-19 | Carlos Henrique Da Silva Ferre | Improvements introduced in vertical lime kiln structure |
| CN103673618A (en) * | 2013-11-15 | 2014-03-26 | 安徽瑞泰新材料科技有限公司 | Method for repairing Maerz lime kiln suspension cylinder base |
| CN206173225U (en) * | 2016-07-27 | 2017-05-17 | 博广环保技术股份有限公司 | Novel two thorax formula limekilns go out ash device |
| CN206330432U (en) * | 2016-12-31 | 2017-07-14 | 安徽马钢工程技术集团有限公司 | It is a kind of to eliminate the process structure that Mialz lime kiln runs wind |
| CN111750688A (en) * | 2020-06-17 | 2020-10-09 | 莱芜钢铁集团建筑安装工程有限公司 | Method for treating air leakage of furnace and kiln |
Family Cites Families (6)
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| ITVI20050291A1 (en) * | 2005-11-04 | 2007-05-05 | Marcheluzzo Impianti Srl | BRICK BAKING OVEN |
| JP5668630B2 (en) * | 2011-07-25 | 2015-02-12 | 住友金属鉱山株式会社 | Rotary kiln outlet side structure |
| CN208333082U (en) * | 2018-04-26 | 2019-01-04 | 江西振大机械制造科技有限公司 | A kind of kiln car sealing device |
| CN108971899B (en) * | 2018-08-10 | 2020-08-14 | 广西柳钢工程技术有限公司 | Build-up welding method and deflection welding tool for vertical grinding roller |
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2020
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| BR9905849A (en) * | 1999-12-15 | 2000-09-19 | Carlos Henrique Da Silva Ferre | Improvements introduced in vertical lime kiln structure |
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| CN206330432U (en) * | 2016-12-31 | 2017-07-14 | 安徽马钢工程技术集团有限公司 | It is a kind of to eliminate the process structure that Mialz lime kiln runs wind |
| CN111750688A (en) * | 2020-06-17 | 2020-10-09 | 莱芜钢铁集团建筑安装工程有限公司 | Method for treating air leakage of furnace and kiln |
Non-Patent Citations (1)
| Title |
|---|
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| CN112414108A (en) | 2021-02-26 |
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Application publication date: 20210226 Assignee: Xingye Liugang New Materials Technology Co.,Ltd. Assignor: Guangxi Liugang New Material Technology Co.,Ltd. Contract record no.: X2023980046044 Denomination of invention: Sealing device for conical hopper of Myrz kiln ash discharge Granted publication date: 20230106 License type: Common License Record date: 20231108 Application publication date: 20210226 Assignee: Wuxuan Liugang New Material Technology Co.,Ltd. Assignor: Guangxi Liugang New Material Technology Co.,Ltd. Contract record no.: X2023980046042 Denomination of invention: Sealing device for conical hopper of Myrz kiln ash discharge Granted publication date: 20230106 License type: Common License Record date: 20231108 Application publication date: 20210226 Assignee: Guangxi Fanggang New Material Technology Co.,Ltd. Assignor: Guangxi Liugang New Material Technology Co.,Ltd. Contract record no.: X2023980046040 Denomination of invention: Sealing device for conical hopper of Myrz kiln ash discharge Granted publication date: 20230106 License type: Common License Record date: 20231108 Application publication date: 20210226 Assignee: Liuzhou Shanhai Technology Co.,Ltd. Assignor: Guangxi Liugang New Material Technology Co.,Ltd. Contract record no.: X2023980046036 Denomination of invention: Sealing device for conical hopper of Myrz kiln ash discharge Granted publication date: 20230106 License type: Common License Record date: 20231108 |
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