CN106225483B - A kind of hot excavation filling mend method in Flash Smelting Furnace open hearth top - Google Patents
A kind of hot excavation filling mend method in Flash Smelting Furnace open hearth top Download PDFInfo
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- CN106225483B CN106225483B CN201610577709.7A CN201610577709A CN106225483B CN 106225483 B CN106225483 B CN 106225483B CN 201610577709 A CN201610577709 A CN 201610577709A CN 106225483 B CN106225483 B CN 106225483B
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- brick
- box
- hot
- smelting furnace
- flash smelting
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Classifications
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- 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
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D1/1621—Making linings by using shaped elements, e.g. bricks
-
- 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
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D2001/1605—Repairing linings
- F27D2001/161—Hot repair
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The present invention proposes a kind of hot excavation filling mend method in Flash Smelting Furnace open hearth top, by the way of replacing traditional reparation of being poured into a mould or laid bricks again after formwork by using the method that preprepared hanger brick box repairs flash furnace roof.Processing time foreshortens to 6 8h by 40h, service life after reparation can extend to 12 months or more, 15 30 days service life than original castable refractory at least extend 10 times or more, simultaneously, digging construction method using the present invention repairs Flash Smelting Furnace open hearth top, can need not cool down to burner hearth in hot lower completion, time is short, and it is simple to reproduce process.In addition, the making of brick box and building by laying bricks or stones for refractory brick are all previously-completed in the place far from high temperature, the construction time is saved, it is also safer.
Description
Technical field
The invention belongs to smelting field of nonferrous metal, are related to a kind of hot excavation filling mend method in Flash Smelting Furnace open hearth top.
Background technology
Flash Smelting Furnace is to make full use of the huge active surface of fine grinding material, the smelting process of strengthening smelting reaction process.It will
Metal sulfide concentrate fine powder and flux spray into together with air in red-hot flash burner hearth through dry, the good heat transfer of formation,
Mass transfer condition makes chemical reaction be carried out with high speed.It can be used for the matte smelting of the sulphide ores such as copper, nickel and make copper to blow
Refining.Flash furnace reaction tower and sedimentation basin open hearth top are generally using the structure of hanging magnesium chromium matter refractory brick, since the structure is sudden and violent for a long time
Dew under high temperature environment, directly withstands up to washing away, corroding for 1350 DEG C or more of sulfur dioxide flue gas.Therefore Flash Smelting Furnace is in life
During production, top hanging brick is gradually thinning to fall off, and furnace roof is caused to alter fire, production disruption.
At present there are two types of Flash Smelting Furnace furnace roof traditional treatment methods, first, furnace roof, which is altered fiery position, handles brickwork joint on neat, edge
Original hanger brick lower height position is welded template, builds new hanger brick by laying bricks or stones in template, then hanger brick stainless steel is hung brick
Hook block hangs over furnace roof and hangs on brick frame.Second is that template is welded along original hanger brick lower height position, using unsetting in template
Refractory material casting is repaired.Both methods is required for being welded template, in the process must be down to negative pressure in stove and temperature
Very low, processing time is long, and working environment is severe, makes a big impact to Flash Smelting Furnace production.
Invention content
In order to solve above-mentioned deficiency in the prior art, the purpose of the present invention is a kind of hot diggings in Flash Smelting Furnace open hearth top to repair
Compound method.
To achieve the above object, the technical solution adopted in the present invention is：A kind of hot excavation filling mend in Flash Smelting Furnace open hearth top
Method includes the following steps：
（a）Measure the furnace roof area for needing to repair；
（b）The area repaired as needed makes brick box, and brick box open topped, bottom and side wall closing, side wall upper part are reserved
Brick box hanging hole, brick box depth are not less than the height of furnace roof refractory brick, and the exterior surface area of brick box cross section is relative to will repair
Area reduce so that side wall is corresponding with the side wall not to damage between furnace roof refractory brick the installation gap for reserving at least 5mm；
（c）It lays bricks, refractory brick is built in brick box, and placement PVC expansion plates are required according to laying fireproof bricks；
（d）Blowing out and by hearth vacuum control be -50pa or less；
（e）The damage hanger brick that position need to be repaired is removed, the brick stubble after damaged hanger brick removing of making uniform；
（f）The brick box for puzzling refractory brick, which is hung in furnace roof, need to repair position, adjust position, make the height of brick and original in brick box
Have that top hanging brick is concordant, and brick box is fixed on pylon by hanging hole and brick box hanging hook；
（g）The hanger brick in brick box is fixed on pylon with brick body hanging hook, brick body suspender member；
（h）After gap between the original hanger brick of brick box and periphery is tamped with asbestos cord, fill real with magnesium mud；
（i）Heating is resumed production.
The brick box hanging hook processes crotch in the cold state.
The step（h）Magnesium mud used is mixed before recording with the brine of saturation, five to six points of mixing time
Clock.
The brick box hanging hole sets one in each side wall.
The brick box is made of the steel plate of thick 8mm.
The beneficial effects of the invention are as follows：The method substitution of flash furnace roof is repaired by using preprepared hanger brick box
By the way of traditional reparation of being poured into a mould or laid bricks again after formwork, processing time foreshortens to 6-8h by 40h, after reparation
Service life can extend to 12 months or more, and the 15-30 days service life than original castable refractory at least extend 10
Times or more, meanwhile, digging construction method using the present invention repairs Flash Smelting Furnace open hearth top, can not be needed in hot lower completion
Cool down to burner hearth, the time is short, and it is simple to reproduce process.In addition, the making of brick box and building by laying bricks or stones all on the ground far from high temperature for refractory brick
Side is previously-completed, and saves the construction time, also safer.
Description of the drawings
Fig. 1 be the present invention relates to Flash Smelting Furnace open hearth top structural schematic diagram；
Fig. 2 is the prior art using the top construction signal that unshape refractory cast repairing method is formed after molding
Figure；
Fig. 3 is the prior art using the top construction schematic diagram for building and hanging the formation of refractory brick repairing method after molding by laying bricks or stones；
When Fig. 4 is method repairing furnace roof using the present invention, it is empty to remove the repairing formed after damaged hanger brick, brick stubble of making uniform
Between schematic diagram；
When Fig. 5 is method repairing furnace roof using the present invention, makes and complete the brick box section signal after hanging brick masonry
Figure；
When Fig. 6 is method using the present invention repairing furnace roof, brick box position and hang on brick frame after schematic diagram；
When Fig. 7 is method using the present invention repairing furnace roof, complete to the schematic diagram after the hanging hung in brick box；
Wherein：1- hanger bricks, 2- pylons, 3- brick bodies hanging hook, 4- brick bodies suspender member, the unsetting castables of 5-, 6- are not
Amorphous refractory cast template suspender member, 7- breakage hanger bricks remove after brick stubble, lay bricks template suspender member, 9- of 8- lay bricks mould
Plate, 10- brick boxes hanging hook, 11- bricks box, 12- brick boxes hanging hole, 13- steel plates, 14- unshape refractories cast template, 15-
Anchoring is grabbed.
Specific implementation mode
Technical scheme of the present invention is further elaborated with below by way of examples and with reference to the accompanying drawings.
As shown in Figures 4 to 7, that the present invention provides a kind of work progress is simple, usage time is long, is used for Flash Smelting Furnace open hearth
Push up the construction restorative procedure of hanger brick digging.The construction method includes the following steps：
（1）The furnace roof area for needing to repair is measured, 5mm is reduced on length and width direction according to the size measured, as pre-
The installation gap stayed with open brick box 11 at the top of 13 processing and fabricating bottom of steel plate and side-closed, and is opened on brick box side wall
Four brick box hanging holes 12；
（2）It builds hanger brick 1 by laying bricks or stones in brick box 11, and PVC expansion plates is placed according to brick body expansion requirements；
（3）Blowing out and by hearth vacuum control be -50pa or less；
（4）The damage hanger brick that position need to be repaired is removed, the brick stubble 7 after damaged hanger brick removing of making uniform；
（5）The brick box 11 for puzzling brick is hung in furnace roof with jack need to repair position, adjust position, make the height of brick in brick box
It is concordant with original top hanging brick, and brick box 11 is fixed on pylon by four brick box hanging holes 12 and brick box hanging hook 10
On 2；
（6）Hanger brick in brick box 11 is fixed on pylon 2 with brick body hanging hook 3；
（7）After gap between the original hanger brick of brick box 11 and periphery 1 is tamped with asbestos cord, fill real with magnesium mud；
（8）Heating is resumed production.
In the above embodiment, it is roasting fire is not had to ensure that the intensity of brick box hanging hook 10 is not damaged, when making its crotch
It is red curved again, and crotch should be processed in the cold state.
In order to ensure magnesium mud can Fast Sintering and it is sintered have enough intensity, it is desirable that record the halogen of preceding saturation
Water is stirred mixing, mixing time five to six minutes to magnesium mud.
Brick box, which hangs in furnace roof, needs repairing area, after positioning and hanging and be fixed on pylon, must hang brick body in brick box
Hook 3 is fixed on furnace roof pylon 2, and after preventing brick cassette bottom portion steel plate scaling loss, hanger brick falls off in brick box.
Claims (5)
1. a kind of hot excavation filling mend method in Flash Smelting Furnace open hearth top, includes the following steps：
（a）Measure the furnace roof area for needing to repair；
（b）The area repaired as needed makes brick box（11）, brick box（11）Open topped, bottom and side wall closing, side wall upper part
Reserved brick box hanging hole（12）, brick box（11）Depth is not less than the height of furnace roof refractory brick, brick box（11）The outer surface of cross section
Area is reduced relative to the area to be repaired so that side wall is corresponding with the side wall not to be damaged between furnace roof refractory brick and reserve at least
The installation gap of 5mm；
（c）It lays bricks, in brick box（11）Interior block refractory brick, and require placement PVC expansion plates according to laying fireproof bricks；
（d）Blowing out and by hearth vacuum control be -50pa or less；
（e）The damage hanger brick that position need to be repaired is removed, the brick stubble after damaged hanger brick removing of making uniform（7）；
（f）The brick box of refractory brick will be puzzled（11）Position need to be repaired by hanging in furnace roof, adjust position, make the height of brick and original in brick box
Have that top hanging brick is concordant, and passes through hanging hole and brick box hanging hook（10）By brick box（11）It is fixed on pylon（2）On；
（g）With brick body hanging hook（3）, brick body suspender member（4）By brick box（11）Interior hanger brick is fixed on pylon（2）On；
（h）By brick box（11）After gap between the original hanger brick in periphery is tamped with asbestos cord, fill real with magnesium mud；
（i）Heating is resumed production.
2. the hot excavation filling mend method in Flash Smelting Furnace open hearth according to claim 1 top, it is characterized in that：The brick box hanging hook
（10）Crotch is processed in the cold state.
3. the hot excavation filling mend method in Flash Smelting Furnace open hearth according to claim 1 top, it is characterized in that：Step（h）Magnesium used
Mud is mixed before recording with the brine of saturation, mixing time five to six minutes.
4. the hot excavation filling mend method in Flash Smelting Furnace open hearth according to claim 1 top, it is characterized in that：The brick box hanging hole
（12）One is set in each side wall.
5. the hot excavation filling mend method in Flash Smelting Furnace open hearth according to claim 1 top, it is characterized in that：The brick box（11）By
The steel plate of thick 8mm is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577709.7A CN106225483B (en) | 2016-07-21 | 2016-07-21 | A kind of hot excavation filling mend method in Flash Smelting Furnace open hearth top |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577709.7A CN106225483B (en) | 2016-07-21 | 2016-07-21 | A kind of hot excavation filling mend method in Flash Smelting Furnace open hearth top |
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| CN106225483A CN106225483A (en) | 2016-12-14 |
| CN106225483B true CN106225483B (en) | 2018-08-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345772A (en) * | 2019-06-06 | 2019-10-18 | 国家电投集团黄河上游水电开发有限责任公司 | Rapid emergency repair method for high-temperature flue |
| CN110779335B (en) * | 2019-10-26 | 2021-08-13 | 上海二十冶建设有限公司 | Integrated mounting method for prefabricated furnace top of rotary hearth furnace |
| CN110806106A (en) * | 2019-10-29 | 2020-02-18 | 首钢京唐钢铁联合有限责任公司 | Method and structure for repairing collapse of refractory material at top of heating furnace |
| CN112066735A (en) * | 2020-07-30 | 2020-12-11 | 白银有色集团股份有限公司 | Method for digging and repairing furnace arch of silver molten pool smelting furnace |
| CN112010652A (en) * | 2020-08-26 | 2020-12-01 | 山东中阳碳素股份有限公司 | Maintenance method for stopping furnace of petroleum coke calcining furnace fire path |
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|---|---|---|---|---|
| JP2005132908A (en) * | 2003-10-29 | 2005-05-26 | Mitsubishi Chemicals Corp | Heat insulation unit for hot repair of coke oven |
| WO2006092867A1 (en) * | 2005-02-28 | 2006-09-08 | The Kansai Coke And Chemicals Co., Ltd. | Repair apparatus for coke oven |
| CN101957139A (en) * | 2010-10-18 | 2011-01-26 | 哈尔滨东安汽车动力股份有限公司 | Furnace lining repairing technology |
| JP4659777B2 (en) * | 2007-03-13 | 2011-03-30 | 新日鉄エンジニアリング株式会社 | Construction method using fireproof insulation brick for hearth |
| CN102564135A (en) * | 2012-02-13 | 2012-07-11 | 中国十九冶集团有限公司 | Construction method for repairing refractory material on top of heating furnace |
-
2016
- 2016-07-21 CN CN201610577709.7A patent/CN106225483B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005132908A (en) * | 2003-10-29 | 2005-05-26 | Mitsubishi Chemicals Corp | Heat insulation unit for hot repair of coke oven |
| WO2006092867A1 (en) * | 2005-02-28 | 2006-09-08 | The Kansai Coke And Chemicals Co., Ltd. | Repair apparatus for coke oven |
| JP4659777B2 (en) * | 2007-03-13 | 2011-03-30 | 新日鉄エンジニアリング株式会社 | Construction method using fireproof insulation brick for hearth |
| CN101957139A (en) * | 2010-10-18 | 2011-01-26 | 哈尔滨东安汽车动力股份有限公司 | Furnace lining repairing technology |
| CN102564135A (en) * | 2012-02-13 | 2012-07-11 | 中国十九冶集团有限公司 | Construction method for repairing refractory material on top of heating furnace |
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| CN106225483A (en) | 2016-12-14 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20191028 Address after: 538002 Qisha Industrial Zone, Qisha Town, Gangkou District, Fangchenggang City, Guangxi Zhuang Autonomous Region (Jinchuan Industrial Park) Patentee after: GUANGXI JINCHUAN NON-FERROUS METALS CO.,LTD. Address before: 737103 No. 98, Jinchuan Road, Jinchang, Gansu Patentee before: JINCHUAN GROUP Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Hot State Repair Method for Open hearth Top of Flash Furnace Effective date of registration: 20221121 Granted publication date: 20180810 Pledgee: China Construction Bank Corporation Fangchenggang branch Pledgor: GUANGXI JINCHUAN NON-FERROUS METALS CO.,LTD. Registration number: Y2022450000202 |
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