CN108759481A - Improve the design scheme of kilneye castable service life - Google Patents
Improve the design scheme of kilneye castable service life Download PDFInfo
- Publication number
- CN108759481A CN108759481A CN201810559908.4A CN201810559908A CN108759481A CN 108759481 A CN108759481 A CN 108759481A CN 201810559908 A CN201810559908 A CN 201810559908A CN 108759481 A CN108759481 A CN 108759481A
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- China
- Prior art keywords
- castable
- anchoring piece
- kilneye
- maintenance
- water
- 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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Classifications
-
- 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
- F27D1/10—Monolithic linings; Supports therefor
-
- 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
- F27D1/1678—Increasing the durability of linings; Means for protecting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a kind of design schemes improving kilneye castable service life, it is characterised in that：The design scheme of the raising kilneye castable service life before construction including checking and confirmation, anchoring piece welding and expansion process, formwork cast, maintenance and form removal, inspection, heating, baking, beneficial effects of the present invention：The design can improve one times of kilneye castable service life, and validity period can reduce that stop kiln primary every year up to 16 months or more, and every kiln is reduced every year replaces 150,000 yuan of break iron expense, saves 80,000 yuan of castable expense, can save open, stop kiln 500,000 yuan of expense of heating.
Description
Technical field
The present invention relates to a kind of kilneye castable design fields, more particularly, to a kind of raising kilneye castable service life
Design scheme.
Background technology
Currently, kilneye castable bears combustor flame temperature up to 1700 DEG C of heat radiation, while bearing temperature nearly 1400
DEG C clinker abrasion with wash away, still suffer from the stress of barrel distortion generation, shearing force etc. of the brick along cylinder direction in kiln.Mesh
Preceding kilneye castable its service life compared with brick in kiln is relatively short, and the service life of general kilneye castable is 6-8 months.
By redesigning, the average service life of kilneye castable reaches 16 months, substantially with brick cycle synchronisation in kiln.
Invention content
The object of the present invention is to provide a kind of design schemes improving kilneye castable service life, solve to kilneye anchor
Firmware shape and material selection, castable surface treatment, dilatation joint formal character etc. eliminate some mechanical stress to refractory material
Influence；It eliminates because high temperature generates the destruction to refractory material of stress；Eliminate asking for influence of the chemical erosion to refractory material
Topic.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of design scheme improving kilneye castable service life, it is characterised in that：The raising kilneye castable uses
The design scheme in period include construction before check with confirm, anchoring piece welding and expansion process, formwork cast, maintenance and form removal,
It checks, heating, toast, specific implementation step is as follows：
1) it checks and confirms before construction：
The dust and sundries for clearing up construction part first, check kilneye cap iron, check ring for blocking bricks scaling loss, trunk surface deformation and oxidation
Layer situation, and reaffirm；
To the loosening that kilneye cap iron occurs, carry out re-securing bolt and adjustment placement position, scaling loss is serious to be replaced；
Processing is re-started to check ring for blocking bricks desoldering, the serious check ring for blocking bricks of scaling loss is replaced；
Barrel distortion position is confirmed or taken pictures, is handled accordingly to anchoring piece size；
Pad polishing will be carried out to the welding of the anchoring piece at the already oxidised position of cylinder.
2) anchoring piece welding and expansion process：
Before welding, it is necessary to be confirmed to anchoring piece material and welding rod kind and ensure compliance with requirement：Front anchoring piece will design
At active type anchoring piece；Anchoring piece is divided into pedestal and anchoring piece two parts；In steel plate of the pedestal by 50mm × 40mm × 8mm
The heart is beaten the holes φ 18mm and is made；Tube chamber welds with base is hung, is welded in centre hole of base, anchor in kilneye cap iron front, Y type anchoring piece strings
Fastener heads wear expansion sleeve.
3) formwork：
Mold is made of steel or wooden rigid material；Using when wooden model should use thickness be not less than 10mm multi-layer board,
Template not less than 5mm can be used for the position of cambered requirement, install and use the mould that ensures not rising, do not run mould；Mold makes
It should thoroughly be cleaned before and do water-proofing treatment；
It is pour area originally 2-3 times that mold, which installs the afterwards reserved mouth that pours, pouring into and vibrating and apply in order to pouring material
Work.
4) dilatation joint, which stays, sets：With three-ply board or 4mm PP hollow plates reserve kilneye side, end face is stayed and sets dilatation joint, every piece adjacent
It is stayed between break iron and sets dilatation joint.
5) stirring, cast of castable：
Amount of agitation should be to have constructed as batch in 15 minutes, and the order of stirring should carry out in two times：Aggregate, powder is first added
Material and bonding agent progress are dry-mixed, then add 80% water, and remaining water is added according to the dry and wet situation of castable；Total amount of water
It is controlled with reference to the standard amount of water that castable producer provides, dry-mixed mixing time is 2 minutes, wet to stir to 3 minutes；
Kilneye castable water requirement is generally relatively small, and stringent by specification is needed to be controlled, to prevent influencing quality.Dilatation joint is
It stays and sets in casting process, must not make sure to keep in mind and omit；In castable and refractory brick junction, waterproof measure should be carried out, to prevent fire resisting
Brick makes moist and castable dehydration；
To ensure that castable is not burst in baking, will stay the gas vent of diameter 5-10mm in construction；It is vented pitch of holes
150mm。
6）, maintenance：
Maintenance：Pour mass after casting complete, it is necessary to which the maintenance for carrying out certain time must not bear external force again during maintenance and shake
It is dynamic.Curing time will frequently sprinkle water at least two days, first day.Removable flash trimming mould continues watering maintenance after castable final set.Band mould
Conserve > for 24 hours, castable construction finishes after maintenance for 24 hours castable surface spraying is wear-resisting, corrosion-resistant RSI ceramic coatings.
7）, baking：
Castable refractory is after the above maintenance processes, baking that must also be Jing Guo certain temperature before use, castable refractory
Heating baking it is as follows：20~200 DEG C of calefactive interzone, need to use time 12h at 15 DEG C/h of heating rate；200 DEG C of calefactive interzone is protected
Warm 20h；200~500 DEG C of calefactive interzone, need to use time 12h at 25 DEG C/h of heating rate；500 DEG C of calefactive interzone, heat preservation 10h；It rises
500~800 DEG C between warm area, 40 DEG C/h of heating rate, time 18h need to be used；800 DEG C of calefactive interzone need to use the time to temperature in use
50h。
Advantageous effect：The present invention design can improve one times of kilneye castable service life, validity period up to 16 months or more,
It can reduce that stop kiln primary every year, every kiln is reduced every year replaces 150,000 yuan of break iron expense, saves 80,000 yuan of castable expense, saves
It opens, stop kiln 500,000 yuan of expense of heating.
Below with reference to drawings and examples, the present invention is described in detail.
Description of the drawings
Fig. 1 is anchor design structural schematic diagram.
Fig. 2 is pedestal design structure schematic diagram.
Fig. 3 is stayed for dilatation joint and is set filling effect schematic diagram.
Fig. 4 castables pour design sketch.
In figure：1. anchoring piece, 2. pedestals, 3. centre hole of base, 4. three-ply boards, 5. cast bed of material, 6. nano ceramics
Dope layer.
Specific implementation mode
Embodiment 1, as shown in Figure 1, 2, anchor design structure,
A kind of design scheme improving kilneye castable service life, it is characterised in that：The raising kilneye castable uses
The design scheme in period include construction before check with confirm, anchoring piece welding and expansion process, formwork cast, maintenance and form removal,
It checks, heating, toast, specific implementation step is as follows：
1) it checks and confirms before construction：
The dust and sundries for clearing up construction part first, check kilneye cap iron, check ring for blocking bricks scaling loss, trunk surface deformation and oxidation
Layer situation, and reaffirm；
To the loosening that kilneye cap iron occurs, carry out re-securing bolt and adjustment placement position, scaling loss is serious to be replaced；
Processing is re-started to check ring for blocking bricks desoldering, the serious check ring for blocking bricks of scaling loss is replaced（Check ring for blocking bricks is not less than in principle
50）；
Barrel distortion position is confirmed or taken pictures, is handled accordingly to anchoring piece size；
Pad polishing will be carried out to the welding of the anchoring piece at the already oxidised position of cylinder；
2) anchoring piece welding and expansion process：
Before welding, it is necessary to be confirmed to anchoring piece material and welding rod kind and ensure compliance with requirement：Front anchoring piece will design
At active type anchoring piece；Anchoring piece is divided into pedestal and anchoring piece two parts；In steel plate of the pedestal by 50mm × 40mm × 8mm
The heart is beaten the holes φ 18mm and is made；Tube chamber welds with base is hung, is welded in centre hole of base in kilneye cap iron front, Y type anchoring piece strings, and 1, just
Face：Anchoring piece and pedestal material are 1Cr18Ni9Ti, the anchoring piece and pedestal of model 14 × 200 or 14 × 180（Bottom
Seat makes：In the steel plate central punch of 50mm × 40mm × 8mm, aperture 18mm）；2, side：Material is 0Cr25Ni20, type
Number be V8 × 80 anchoring piece.Anchoring piece right-angled intersection is distributed, and welding spacing is 150 × 150mm, and expansion is worn on anchoring piece head
Set；
3) formwork：
Mold is made of steel or wooden rigid material；Using when wooden model should use thickness be not less than 10mm multi-layer board,
Template not less than 5mm can be used for the position of cambered requirement, install and use the mould that ensures not rising, do not run mould；Mold makes
It should thoroughly be cleaned before and do water-proofing treatment；
Mold installs 2-3 times afterwards reserved for pouring mouth and pouring area originally, in order to pouring material pour into and construction of vibrating；
Because dilatation joint interval is little, for ease of construction, backform can not be set.Specific method：First install side mould below kilneye, two pieces
Break iron seam crossing one block of three-ply board of axially vertical insertion or 4mm PP hollow plates reserve dilatation joint, and top does not set masterplate, as pouring
Material feeding pours into mouth.Rotary kiln after completion solidifies is poured, bottom continuation formwork is placed on by adjacent one, pours, so recycle repeatedly, directly
It is completed to all constructions.
4) as shown in figure 3, dilatation joint stays sets：With three-ply board 4 or 4mm PP hollow plates reserve kilneye side, end face is stayed and sets expansion
It stitches, is stayed between every piece of adjacent break iron and set dilatation joint；
5) stirring, cast of castable：
As shown in figure 4, amount of agitation should be to have constructed as batch in 15 minutes, the order of stirring should carry out in two times：First
Addition aggregate, powder and bonding agent progress are dry-mixed, then add 80% water, and remaining according to the addition of the dry and wet situation of castable
Water；Total amount of water is controlled with reference to the standard amount of water that castable producer provides, and dry-mixed mixing time 2 minutes is wet to stir 3 points
Clock；
Kilneye castable water requirement is generally relatively small, and stringent by specification is needed to be controlled, to prevent influencing quality.Dilatation joint is
It stays and sets in casting process, must not make sure to keep in mind and omit；In castable and refractory brick junction, waterproof measure should be carried out（Using pentahapto
Plate or plastic paper separate）, make moist and castable dehydration to prevent refractory brick；
To ensure that castable is not burst in baking, will stay the gas vent of diameter 5-10mm in construction；It is vented pitch of holes
150mm。
High-temperature nano ceramic coating can generate nano ceramics face at 600 DEG C, and at 2800 DEG C, nano ceramics face is high
Temperature is destroyed.High-temperature nano ceramic coating forms enhancement measures using omnidirectional and orientation reticular fibre, is improved by coupling technique
Toughness, so being firmly combined with substrate material, fracture toughness is strong, can effectively prevent damaged and peeling caused by impact force.Coating
Protective film is formed in substrate material surface so that host material is anti-oxidant, the comprehensive performances such as corrosion-resistant are significantly promoted.In addition by
It is strong associative key in ionic bond and its covalent bond, bond energy is high, and high temperature and low temperature influence it very little, the vibration frequency of nano ceramics
The high and low ceramic material coefficient of expansion, high temperature and low temperature are also difficult to damage its structure, therefore high-temperature nano ceramics apply
Layer thermal shock performance is very good.At up to 1800 °C（3270°F）Refractory material, castable under high temperature.
Routinely program and method, demoulding are carried out after conserving by following procedure for the construction of burner castable, maintenance：
Baking：
Nano ceramics needs are sprayed to meet in order to enable Free water in refractory material and water of constitution to be fully discharged, demoulding inspection
After looking into acceptance(check), it is necessary to use sunlamp（Or other heat sources）Burner head 1m is toasted.Baking time 12h.
Spraying：
A, baking terminates, and refractory surface is removed lime-ash, destroys the floating ash in surface, burr with electric angle grinder, cleans dry
After net, you can implement the spraying of high-temperature nano ceramic coating.
B, normal temperature air sprays：Suitable aerial spraying spray gun is selected, it is high using the compressed air spraying of 0.6-0.8MPa
Warm ceramic coating.
C, air drying cures：After spraying 24-48 hours（According to air humidity difference）, you can so that high-temperature nano ceramics is applied
Expect the moisture evaporation dry solidification of film layer.
D, heating sinters pottery into：High-temperature nano ceramic coating after dry solidification heats up with stove and is sintered, closely tied with base material
It closes.
6）, maintenance：
Maintenance：Pour mass after casting complete, it is necessary to which the maintenance for carrying out certain time must not bear external force again during maintenance and shake
It is dynamic.Curing time will frequently sprinkle water at least two days, first day.Removable flash trimming mould continues watering maintenance after castable final set.Band mould
Conserve > for 24 hours, castable construction finishes after maintenance for 24 hours castable surface spraying is wear-resisting, corrosion-resistant RSI ceramic coatings；
7）, baking：
Castable refractory is after the above maintenance processes, baking that must also be Jing Guo certain temperature before use, castable refractory
Heating baking it is as follows：20~200 DEG C of calefactive interzone, need to use time 12h at 15 DEG C/h of heating rate；200 DEG C of calefactive interzone is protected
Warm 20h；200~500 DEG C of calefactive interzone, need to use time 12h at 25 DEG C/h of heating rate；500 DEG C of calefactive interzone, heat preservation 10h；It rises
500~800 DEG C between warm area, 40 DEG C/h of heating rate, time 18h need to be used；800 DEG C of calefactive interzone need to use the time to temperature in use
50h。
Above embodiment be only the preferred embodiment of the present invention is described, not to the scope of the present invention into
Row limits, under the premise of not departing from design spirit of the present invention, technical side of this field ordinary engineering and technical personnel to the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain of claims of the present invention determination.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (1)
1. a kind of design scheme improving kilneye castable service life, which is characterized in that the raising kilneye castable makes
Include checking to pour into a mould, conserve and tear open with confirmation, anchoring piece welding and expansion process, formwork before constructing with the design scheme in period
Mould, inspection, heating, baking, specific implementation step are as follows：
1) it checks and confirms before construction：
The dust and sundries for clearing up construction part first, check kilneye cap iron, check ring for blocking bricks scaling loss, trunk surface deformation and oxidation
Layer situation, and reaffirm；
To the loosening that kilneye cap iron occurs, carry out re-securing bolt and adjustment placement position, scaling loss is serious to be replaced；
Processing is re-started to check ring for blocking bricks desoldering, the serious check ring for blocking bricks of scaling loss is replaced；
Barrel distortion position is confirmed, is handled accordingly to anchoring piece size；
Pad polishing will be carried out to the welding of the anchoring piece at the already oxidised position of cylinder；
2) anchoring piece welding and expansion process：
Before welding, it is necessary to be confirmed to anchoring piece material and welding rod kind and ensure compliance with requirement：Front anchoring piece will design
At active type anchoring piece；Anchoring piece is divided into pedestal and anchoring piece two parts；In steel plate of the pedestal by 50mm × 40mm × 8mm
The heart is beaten the holes φ 18mm and is made；Tube chamber welds with base is hung, is welded in centre hole of base, anchor in kilneye cap iron front, Y type anchoring piece strings
Fastener heads wear expansion sleeve；
3) formwork：
Mold is made of steel or wooden rigid material, using the multi-layer board that thickness should be used to be not less than 10mm when wooden model,
Template not less than 5mm can be used for the position of cambered requirement, install and use the mould that ensures not rising, do not run mould, mold makes
It should thoroughly be cleaned before and do water-proofing treatment；
It is pour area originally 2-3 times that mold, which installs the afterwards reserved mouth that pours, pouring into and vibrating and apply in order to pouring material
Work；
4）Dilatation joint, which stays, to be set：
With three-ply board or 4mm PP hollow plates reserve kilneye side, end face is stayed and sets dilatation joint, is stayed between every piece of adjacent break iron and set expansion
Seam；
5) stirring, cast of castable：
Amount of agitation should be to have constructed as batch in 15 minutes, and the order of stirring should carry out in two times：Aggregate, powder is first added
Material and bonding agent progress are dry-mixed, then add 80% water, and remaining water is added according to the dry and wet situation of castable；Total amount of water
It is controlled with reference to the standard amount of water that castable producer provides, dry-mixed mixing time is 2 minutes, wet to stir to 3 minutes；
Kilneye castable water requirement is generally relatively small, and stringent by specification is needed to be controlled, to prevent influencing quality；Dilatation joint is
It stays and sets in casting process, must not make sure to keep in mind and omit；In castable and refractory brick junction, waterproof measure should be carried out, to prevent fire resisting
Brick makes moist and castable dehydration；
To ensure that castable is not burst in baking, will stay the gas vent of diameter 5-10mm in construction, it is vented pitch of holes
150mm；
6）, maintenance：
Maintenance：Pour mass after casting complete, it is necessary to which the maintenance for carrying out certain time must not bear external force again during maintenance and shake
Dynamic, curing time will frequently sprinkle water at least two days, first day, and removable flash trimming mould continues watering maintenance, band mould after castable final set
Conserve > for 24 hours, castable construction finishes after maintenance for 24 hours castable surface spraying is wear-resisting, corrosion-resistant RSI ceramic coatings；
7）, baking：
Castable refractory is after the above maintenance processes, baking that must also be Jing Guo certain temperature before use, castable refractory
Heating baking it is as follows：20~200 DEG C of calefactive interzone, need to use time 12h at 15 DEG C/h of heating rate；200 DEG C of calefactive interzone is protected
Warm 20h；200~500 DEG C of calefactive interzone, need to use time 12h at 25 DEG C/h of heating rate；500 DEG C of calefactive interzone, heat preservation 10h；It rises
500~800 DEG C between warm area, 40 DEG C/h of heating rate, time 18h need to be used；800 DEG C of calefactive interzone need to use the time to temperature in use
50h。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810559908.4A CN108759481A (en) | 2018-06-02 | 2018-06-02 | Improve the design scheme of kilneye castable service life |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810559908.4A CN108759481A (en) | 2018-06-02 | 2018-06-02 | Improve the design scheme of kilneye castable service life |
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| Publication Number | Publication Date |
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| CN108759481A true CN108759481A (en) | 2018-11-06 |
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ID=64002069
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563452A (en) * | 2019-09-02 | 2019-12-13 | 河南好运祥耐材有限公司 | Wear-resistant ceramic coating for blast furnace slag runner |
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| DE3531089A1 (en) * | 1985-01-29 | 1987-03-05 | Brandenburger Isoliertech | Process for producing a heat-insulated pipe for channelling crude oil |
| CN104677089A (en) * | 2015-02-04 | 2015-06-03 | 安徽芜湖海螺建筑安装工程有限责任公司 | Construction method for prolonging service cycles of kiln mouth castables in cement clinker production lines |
| CN105091593A (en) * | 2015-08-23 | 2015-11-25 | 安徽芜湖海螺建筑安装工程有限责任公司 | Heatproof steel anchoring part for cement rotary kiln |
| CN106370010A (en) * | 2016-08-31 | 2017-02-01 | 安徽芜湖海螺建筑安装工程有限责任公司 | Novel liner structure implementation scheme for cement kiln opening |
| CN106595315A (en) * | 2016-12-10 | 2017-04-26 | 通达耐火技术股份有限公司 | Cement rotary kiln mouth refractory construction method |
| CN107576199A (en) * | 2017-10-01 | 2018-01-12 | 安徽芜湖海螺建筑安装工程有限责任公司 | The cylinder anchoring piece used in rotary cement kiln system |
| CN107687765A (en) * | 2017-09-10 | 2018-02-13 | 安徽芜湖海螺建筑安装工程有限责任公司 | A kind of method for extending cooler throat liner validity period |
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2018
- 2018-06-02 CN CN201810559908.4A patent/CN108759481A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3531089A1 (en) * | 1985-01-29 | 1987-03-05 | Brandenburger Isoliertech | Process for producing a heat-insulated pipe for channelling crude oil |
| CN104677089A (en) * | 2015-02-04 | 2015-06-03 | 安徽芜湖海螺建筑安装工程有限责任公司 | Construction method for prolonging service cycles of kiln mouth castables in cement clinker production lines |
| CN105091593A (en) * | 2015-08-23 | 2015-11-25 | 安徽芜湖海螺建筑安装工程有限责任公司 | Heatproof steel anchoring part for cement rotary kiln |
| CN106370010A (en) * | 2016-08-31 | 2017-02-01 | 安徽芜湖海螺建筑安装工程有限责任公司 | Novel liner structure implementation scheme for cement kiln opening |
| CN106595315A (en) * | 2016-12-10 | 2017-04-26 | 通达耐火技术股份有限公司 | Cement rotary kiln mouth refractory construction method |
| CN107687765A (en) * | 2017-09-10 | 2018-02-13 | 安徽芜湖海螺建筑安装工程有限责任公司 | A kind of method for extending cooler throat liner validity period |
| CN107576199A (en) * | 2017-10-01 | 2018-01-12 | 安徽芜湖海螺建筑安装工程有限责任公司 | The cylinder anchoring piece used in rotary cement kiln system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563452A (en) * | 2019-09-02 | 2019-12-13 | 河南好运祥耐材有限公司 | Wear-resistant ceramic coating for blast furnace slag runner |
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Application publication date: 20181106 |