CN1320800A - Insulating brick, refractory brick and new method for building rotary kiln - Google Patents
Insulating brick, refractory brick and new method for building rotary kiln Download PDFInfo
- Publication number
- CN1320800A CN1320800A CN 00106149 CN00106149A CN1320800A CN 1320800 A CN1320800 A CN 1320800A CN 00106149 CN00106149 CN 00106149 CN 00106149 A CN00106149 A CN 00106149A CN 1320800 A CN1320800 A CN 1320800A
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- Prior art keywords
- brick
- rotary kiln
- bricks
- masonry
- building
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- 239000011449 brick Substances 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 3
- 239000010959 steel Substances 0.000 abstract 3
- 239000002002 slurry Substances 0.000 abstract 2
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 12
- 239000004570 mortar (masonry) Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- -1 metallurgy Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 101100230509 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-1 gene Proteins 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
An insulating brick, a refractory brick and a new method for building a rotary kiln are disclosed, wherein the brick surface of the insulating brick and the refractory brick is provided with a concave mud groove. When the rotary kiln is built by the bricks, only the slurry grooves of the bricks are filled with the binder slurry, and gaps among the bricks are controlled to be close to the minimum value allowed by thermal expansion, so that the local semi-closed bonding among the bricks and between the masonry and the inner wall of the steel shell of the rotary kiln is realized. The mud grooves on the brick surface are mutually connected into a cage-shaped structure, and a plurality of binder pins are formed in the radial direction, the circumference and the longitudinal direction of the masonry after drying and sintering to firmly fix the bricks and the bricks, and the masonry and the inner wall of the steel shell of the rotary kiln together, so that the distortion and the movement abrasion between the masonry and the inner wall of the steel shell of the rotary kiln and between the bricks are avoided, and the accidents of brick falling and kiln collapse caused by the distortion and the movement abrasion are avoided. The invention is suitable for building rotary kilns, circular furnaces and arched furnace tops in the industries of building materials, metallurgy, chemical engineering and the like.
Description
The invention provides a kind of insulating brick and refractory brick and build the novel method of rotary kiln by laying bricks or stones.The spill slush-pit launder that has certain depth and width on the brick face of this insulating brick and refractory brick; When building by laying bricks or stones, only in this groove, fill up binding agent, realize brick and brick, local semiclosed bonding between masonry and the rotary kiln box hat inwall; The manufacturing technology that belongs to roasting apparatus.
Often adopt rotary kiln as roasting apparatus in industries such as building materials, metallurgy, chemical industry.Hexahedral insulating brick of existing isosceles trapezoid and refractory brick are normally adopted in building by laying bricks or stones of rotary kiln; Building method has the wet block method of the fissure of displacement of full brick face adding additives and the dried skewer method of the fissure of displacement of adding additives not.The wet block method of the fissure of displacement be with brick with water-soaked after the fissure of displacement build by laying bricks or stones.All fill with binding agents such as refractory mortars between the slit generally at 2-3mm in slit between brick and brick; Reserve one or several annular dilatation joint according to rotary kiln length and maximum operating temperature at the vertical certain position of masonry.Rotary kiln puzzles back drying and sintering, and binding agent just has certain intensity, has fixed the position of brick in masonry.But owing to the vibrations of rotary kiln running and the reasons such as the effect of expanding with heat and contract with cold of ceasing fire and heating up, the binding agent thin layer intensity of 2-3mm is low, and fragmentation comes off easily, finally causes between brick and the brick, produces the moving wearing and tearing of string between masonry and the rotary kiln box hat inwall.Along with the prolongation of working time, the abrasion loss of brick arrives to a certain degree greatly, will the fall brick and the kiln accident of collapsing, the maintenance of ceasing fire of having to.Adopt " dried skewer method " when building by laying bricks or stones, be controlled at the minimum value that thermal expansion allows between the slit of brick and brick.For making puzzle joint even, certain thickness hard paper commonly used or wood chip skewer are built by laying bricks or stones in brickwork joint.When the igniting operation, the scraps of paper or wood chip are burnt, and brickwork joint remains on preset value.The kiln temperature rise is to maximum operating temperature, the basic asphyxia by external pressure on the chest and abdomen of brick thermal expansion elongated slots.In drive intensification and parking temperature-fall period, for avoiding rotary kiln to be heated or the uneven caused kiln body deformability of lowering the temperature, rotary kiln must rotate with certain speed.This moment, the vibrations of rotary kiln running and the distortion of masonry can produce masonry and rotary kiln box hat inwall because of certain slit is arranged between brick, the moving wearing and tearing of the string between brick and the brick.The kiln accident of collapsing that causes because of the brick that weares and teares also can take place in long-time running.So the rotary kiln maintenance cycle that above-mentioned two kinds of methods are built by laying bricks or stones is all shorter, according to different industries statistics, generally between half a year to one year.Rotary kiln is the nucleus equipment of production line normally, and its parking and maintenance are very big to the production cost influence.
At the above-mentioned deficiency of prior art, the present invention has adopted novel insulating brick and refractory brick, and adopt the local semiclosed mull technique of brick to build by laying bricks or stones, has overcome easily the fall shortcoming of the brick and the kiln that collapses of prior art.
The present invention takes following technical measures to realize that the rotary kiln masonry has good whole, soundness and weather resistance, reaches distortion and the moving purpose of wearing and tearing of string avoided between brick and brick, masonry and the rotary kiln box hat inwall.
On the basis of existing insulating brick and refractory brick, the template by changing brick-making mould and the size and shape of die sleeve process the spill slush-pit launder of certain depth (being generally 5-10mm) and certain width (generally be no more than this face width degree 1/3rd) at the central part of four faces (except top, the bottom surface), five faces (except the end face) or six faces (refractory brick that is used for the middle layer) of six faces of insulating brick and refractory brick.The slush-pit launder of two rectangle sides, end face and bottom surfaces must keep vertical with two isosceles trapezoid end faces, and joins end to end with its slush-pit launder and to connect.When building the insulation of furnace wall layer by laying bricks or stones,, only in slush-pit launder, smear full fireclay mud, make it to bond together with rotary kiln box hat inwall and adjacent insulating brick with six insulating bricks of wearing slush-pit launder.Slit between insulating brick generally is controlled at the minimum value (general longitudinal seam≤2mm that allows near heat expansion, radial slot≤1mm), on insulating brick-layer, build refractory brick (increasing one deck insulating fire brick again) afterwards again by laying bricks or stones, adopt five refractory brick dislocation of wearing slush-pit launder (end face is trough of belt not) to build by laying bricks or stones as the very high need of rotary kiln working temperature; Make to be full of refractory mortar in the slush-pit launder, and do not hang mud on the brick face, realize the local semiclosed bonding of brick, brickwork joint also is controlled at the minimum value that allows near thermal expansion (general longitudinal seam≤3mm, radial slot≤1mm).Like this, between insulating brick and rotary kiln box hat inwall, formed the vertical binding agent pin of orthogonal in the slit; Formed garden week pin in the capable radial slot with in the ranks at insulating brick; Formed vertical pin in the horizontal seam between the adjacent insulating brick of colleague; In insulating brick-layer and fire brick layer break joint, formed radially pin; Refractory brick in the ranks radial slot has formed garden week pin; Go together and formed vertical pin between adjacent refractory brick.These vertically, radially, the binding agent pin that forms on the Zhou Fangxiang of garden is interconnected to the cage shape, each piece brick has been fixed the position in masonry, several complete masonry sections (concrete hop count is by the number decision of kiln district dilatation joint) have been formed at last, after super-dry and roasting, these binding agent pins just have higher intensity, thereby globality, soundness and the weather resistance of rotary kiln masonry have been improved.
When rotary kiln turned round, it is moving at distortion and the string of garden Zhou Fangxiang that vertically pin has mainly stoped masonry; Radial peg has mainly stoped brick string in the vertical moving; Garden week pin has mainly stoped brick string diametrically moving.In a word, because the location and the fixed action of these binding agent pins can not produce the moving wearing and tearing of distortion and string between masonry and rotary kiln box hat inwall, brick and the brick.Connect even drawn back a place or the many places of pin because of the effect of expanding with heat and contract with cold, because the slit of brick and brick is very little, the pin size is in semi-closed state more again, so also can not drop out, still can play location and fixed action.Thereby kept globality, soundness and the weather resistance of rotary kiln masonry under dynamically, thereby avoided having prolonged the turnaround of rotary kiln, reduced production cost because of masonry distortion and moving the fall brick and the kiln accident of collapsing of wearing and tearing and causing of brick string.
The present invention is suitable for the building by laying bricks or stones of all kinds of rotary kilns, round kiln and arch furnace roof of industries such as building materials, metallurgy, chemical industry.
Accompanying drawing 1,2 is the insulating brick structural representation.On the end face 1 of brick, be processed with slush-pit launder 6; Be processed with slush-pit launder 5 on the bottom surface 7; Be processed with annular slush-pit launder 4 on end face 2 and the side 3; The size of brick is determined as required.
Accompanying drawing 3,4 is the firebrick structure synoptic diagram.On end face 2 and side 3, be processed with annular slush-pit launder 4; Be processed with slush-pit launder 5 on the bottom surface 6; This brick is an internal layer refractory brick, does not have slush-pit launder on the end face 1; If middle layer insulating fire brick end face 1 also can be processed with slush-pit launder.
Accompanying drawing 5,6 is respectively rotary kiln masonry section radial section and axial section synoptic diagram.Kiln body box hat 1 and insulating brick-layer 3 intermediate formation shell wall slits 2; The slit of insulating brick and shell inwall has vertical pin 5 to fix; Insulating brick in the ranks radial slot 11 has all pins 8 in garden to fix; Going together, horizontal seam 12 has vertical pin 13 to fix between adjacent insulating brick; The interlayer seam 9 of insulating brick and fire brick layer 6 has radial peg 4 fixing; Refractory brick in the ranks radial slot 10 has all pins 7 in garden to fix; The horizontal seam 14 of going together between adjacent refractory brick is fixed by vertical pin 15; Constituted complete masonry section thus.
Embodiment 1
The rotary kiln of the long 15M of internal diameter Φ 1500mm.Thermal insulation layer adopts LG type light weeight alumina brick, is of a size of 230 * 160 * 94/74mm, bottom surface mud groove depth 8mm, and all the other five face groove depths are 5mm; Make binding agent with mixing mud, the mud proportioning is a 500# cement and the ratio of refractory mortar 1: 2; 50 on every ring 64 encircles totally, 3200 bricks, and longitudinal seam 2mm is in the radial slot 0.6mm.Respectively stay the dilatation joint of 25mm at distance kiln hood and kiln tail 4950mm place.Flame retardant coating is selected high alumina matter insulating fire brick for use, is of a size of 230 * 113 * 65/53mm, and the end face of brick does not have slush-pit launder, all the other 5 faces all have the dark slush-pit launder of 5mm, and to adopt mixing mud, mud proportioning be 500# cement and the ratio of refractory mortar 1: 3, longitudinal seam 3mm is in the radial slot 1mm; Every ring totally 64 encircles 3584 with 56 of bricks.Respectively stay the dilatation joint of 1 wide 30mm at distance kiln hood and kiln tail 5175mm place, fill with asbestos twine.
This kiln is used for the roasting super-cell, and the highest wall temperature of empty kiln reaches 1400 ℃, and operating temperature 1100 ℃ ± 50 is moved 3 years and needn't be overhauled.
Internal diameter Φ 1800mm, the rotary kiln of long 18M.Thermal insulation layer is selected LG type light weeight alumina brick for use, is of a size of 230 * 200 * 133/103mm, bottom surface mud groove depth 10mm, and all the other five face groove depth 6mm, to adopt mixing mud, mud proportioning be 500# cement and the ratio of refractory mortar 1: 2; Every ring totally 77 encircles 3234 bricks with 42; Longitudinal seam 2mm is in the radial slot 0.8mm.Stay each one of the wide dilatation joint of 25mm at distance kiln hood and kiln tail 6095mm place.Flame retardant coating is selected T38 type refractory brick for use, is of a size of 230 * 113 * 65/55mm, except that end face all with the dark slush-pit launder of 5mm.The mud proportioning is a 500# cement and the ratio of refractory mortar is 1: 3.66 on every ring, totally 77,5082 bricks; Longitudinal seam 3mm is in the radial slot 1mm.Respectively stay the dilatation joint of 1 wide 30mm at distance kiln hood and kiln tail 5865mm place.
This kiln is used for roasting flocculating aids and compound, and high-altitude kiln wall temperature is 1350 ℃, and the actual motion temperature is 1100 ± 50 ℃, moves 3 years and needn't overhaul.
Claims (3)
1, a kind of insulating brick and refractory brick of building rotary kiln by laying bricks or stones is characterized in that being processed with on hexahedral six faces of isosceles trapezoid of brick, five faces or four faces slush-pit launder of certain depth and width; And the slush-pit launder of two rectangle sides, end face and bottom surfaces must keep vertical with two isosceles trapezoid end faces, and is connected with its slush-pit launder.
2, a kind of novel method of building rotary kiln by laying bricks or stones, described insulating brick of claim 1 and refractory brick have been adopted, filling adhesive in the slush-pit launder of brick only when building by laying bricks or stones, realize brick and brick, the local semiclosed bonding of masonry and rotary kiln box hat inwall, and binding agent is not dosed at other position of brickwork joint, and the slit is controlled at the minimum value that allows near thermal expansion.
3, claim 1,2 described insulating bricks and refractory brick and build the method for rotary kiln by laying bricks or stones also are applicable to and build round stove or arch furnace roof by laying bricks or stones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00106149 CN1225630C (en) | 2000-04-27 | 2000-04-27 | Insulating brick, refractory brick and method for masoning rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00106149 CN1225630C (en) | 2000-04-27 | 2000-04-27 | Insulating brick, refractory brick and method for masoning rotary kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1320800A true CN1320800A (en) | 2001-11-07 |
| CN1225630C CN1225630C (en) | 2005-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00106149 Expired - Fee Related CN1225630C (en) | 2000-04-27 | 2000-04-27 | Insulating brick, refractory brick and method for masoning rotary kiln |
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| Country | Link |
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| CN (1) | CN1225630C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182221A (en) * | 2007-12-04 | 2008-05-21 | 宫营方 | Standardized production application of rotary kiln firebrick |
| CN101769678B (en) * | 2008-12-30 | 2012-02-01 | 中国恩菲工程技术有限公司 | Furnace body of electric furnace |
| CN103033043A (en) * | 2012-12-26 | 2013-04-10 | 安徽芜湖海螺建筑安装工程有限责任公司 | Method for laying refractory bricks of large variable diameter part of 12,000t/d rotary kiln |
| CN103615884A (en) * | 2013-11-22 | 2014-03-05 | 中国五冶集团有限公司 | Masonry method for rotary kilns |
| CN103727543A (en) * | 2012-10-15 | 2014-04-16 | 黄广禧 | Refractory layer of waste pyrolyzing furnace |
| CN107188223A (en) * | 2017-07-19 | 2017-09-22 | 攀钢集团研究院有限公司 | The rotary kiln produced for sulfate process titanium dioxide |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101093786B1 (en) * | 2006-04-03 | 2011-12-19 | 신닛떼쯔 엔지니어링 가부시끼가이샤 | Hearth structure of rotary hearth furnace |
-
2000
- 2000-04-27 CN CN 00106149 patent/CN1225630C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182221A (en) * | 2007-12-04 | 2008-05-21 | 宫营方 | Standardized production application of rotary kiln firebrick |
| CN101182221B (en) * | 2007-12-04 | 2011-01-19 | 宫营方 | Firebrick production method used for rotary kiln |
| CN101769678B (en) * | 2008-12-30 | 2012-02-01 | 中国恩菲工程技术有限公司 | Furnace body of electric furnace |
| CN103727543A (en) * | 2012-10-15 | 2014-04-16 | 黄广禧 | Refractory layer of waste pyrolyzing furnace |
| CN103033043A (en) * | 2012-12-26 | 2013-04-10 | 安徽芜湖海螺建筑安装工程有限责任公司 | Method for laying refractory bricks of large variable diameter part of 12,000t/d rotary kiln |
| CN103615884A (en) * | 2013-11-22 | 2014-03-05 | 中国五冶集团有限公司 | Masonry method for rotary kilns |
| CN103615884B (en) * | 2013-11-22 | 2016-02-03 | 中国五冶集团有限公司 | Masonry of Rotary Kiln method |
| CN107188223A (en) * | 2017-07-19 | 2017-09-22 | 攀钢集团研究院有限公司 | The rotary kiln produced for sulfate process titanium dioxide |
| CN107188223B (en) * | 2017-07-19 | 2020-02-04 | 攀钢集团研究院有限公司 | Rotary kiln for producing titanium dioxide by sulfuric acid process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1225630C (en) | 2005-11-02 |
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