CN104829244A - Tertiary air duct curve prefabricated component for cement kiln - Google Patents
Tertiary air duct curve prefabricated component for cement kiln Download PDFInfo
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- CN104829244A CN104829244A CN201510168808.5A CN201510168808A CN104829244A CN 104829244 A CN104829244 A CN 104829244A CN 201510168808 A CN201510168808 A CN 201510168808A CN 104829244 A CN104829244 A CN 104829244A
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Abstract
The present invention provides a with tertiary air duct curve prefabricated component for a cement kiln, and aims to resolve the problem of poor anti-erosion performance of the tertiary air duct curve of the prior art. The tertiary air duct curve prefabricated component for the cement kiln comprises the following components by weight parts of: 15-25 parts of 5-8mm black corundum, 15-20 parts of 3-5mm black corundum, 10-15 parts of 1-3mm black corundum, 10-15 parts of 0-1mm black corundum, 10-20 parts by 0-1mm of silicon carbide, 6-10 parts of silicon carbide powder not larger than 200 mesh, 5-10 parts of brown alumina powder not larger than 200 mesh, 4-7 parts of calcium aluminate cement, 3-5 parts of alumina powder, 4-6 parts of silica powder, 0.10-0.15 part of a water reducing agent, 0.01-0.02 part of explosion-proof fiber and 0.5-1 part of heat-resistant steel fiber. The invention uses black corundum and silicon carbide as the main materials for the tertiary air duct curve prefabricated component, and the black corundum can make the matrix and aggregate fully connect and cement at high temperature, effectively fill the pores of aggregate and significantly improve the high temperature properties of the material, thereby increasing the abrasion resistance and alkali erosion resistance of the tertiary air duct curve inner liner.
Description
Technical field
The invention belongs to technical field of refractory materials, particularly relate to a kind of cement kiln tertiary-air pipe bend prefabricated component.
Background technology
Bend for triple air hose of cement kiln liner needs the working temperature of bearing 800 ~ 1100 DEG C, opposing wind speed is approximately the air-flow of 25m/s and grog fine particle washes away, but also be subject to the corrosion of alkali vapor, so operating mode is severe, well damage, usually because of the normal operation that the effect of attrition of bend part is produced.Bend for triple air hose liner refractory materials used is through repeatedly developing, and be designed to high alumina castable the earliest, duration of service only has one month, and change mullite corundum mould material afterwards into, duration of service only has two months; Adopt moon high-strength abrasive brick and mullite corundum mould material composite frame structure more afterwards, also only can maintain the operation of four months reluctantly.The bend for triple air hose dedicated pouring material adopting and prepare for main raw material with corundum, silicon carbide, andaluzite, mullite etc. is disclosed in the document such as patent of invention CN102826812A and CN102503457A, although in use achieve certain result of use, but the formwork needed in casting process and form removal cumbersome, construction period is extended greatly, and result of use and site operation quality have direct impact.Patent documentation CN202630667U, CN202792977U, CN202166307U, CN103307883A, CN102367901A etc. disclose and adopt prefabricated component as tertiary-air pipe bend liner, all undertaken designing and improving by preform shape aspect, improve the wear resistance of tertiary-air pipe bend liner, and substantially identical with mould material in material, be in use difficult to obtain good effect.Therefore running well for ensureing that cement kiln is produced, needing by selecting suitable material, the structure of design science, improving wear resistance and the scour resistance at three bend positions, thus extending the work-ing life of tertiary-air pipe liner.
Summary of the invention
The invention provides a kind of cement kiln tertiary-air pipe bend prefabricated component, be intended to solve the poor problem of existing tertiary-air pipe bend prefabricated component scour resistance.
In order to solve above technical problem, the present invention is achieved through the following technical solutions: a kind of cement kiln tertiary-air pipe bend prefabricated component, comprise according to mass fraction: the black corundum of 15 ~ 25 parts of 5 ~ 8mm, the black corundum of 15 ~ 20 parts of 3 ~ 5mm, the black corundum of 10 ~ 15 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 10 ~ 15 parts, the silicon carbide of 10 ~ 20 parts of 0 ~ 1mm, 6 ~ 10 parts are not more than 200 object carborundum powders, 5 ~ 10 parts are not more than 200 object brown alundum powders, 4 ~ 7 parts of aluminous cements, 3 ~ 5 parts of aluminum oxide powders, 4 ~ 6 parts of silicon powders, 0.10 ~ 0.15 part of water reducer, 0.01 ~ 0.02 part of explosion-proof fiber, 0.5 ~ 1 part of heat-resistant steel fiber.
Further, comprise according to mass fraction: the silicon carbide of the black corundum of the black corundum of 25 parts of 5 ~ 8mm, the black corundum of 15 parts of 3 ~ 5mm, 10 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 10 parts, 10 parts of 0 ~ 1mm, 10 parts be not more than 200 object carborundum powders, 7 parts be not more than 200 object brown alundum powders, 4 parts of aluminous cements, 3 parts of aluminum oxide powders, 6 parts of silicon powders, 0.10 part of water reducer, 0.01 part of explosion-proof fiber, 0.5 part of heat-resistant steel fiber.The cement kiln tertiary-air pipe bend prefabricated component prepared by this proportioning has good thermal shock resistance and wear resisting property.
Further, comprise according to mass fraction: the silicon carbide of the black corundum of the black corundum of 15 parts of 5 ~ 8mm, the black corundum of 20 parts of 3 ~ 5mm, 15 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 15 parts, 10 parts of 0 ~ 1mm, 6 parts be not more than 200 object carborundum powders, 5 parts be not more than 200 object brown alundum powders, 7 parts of aluminous cements, 3 parts of aluminum oxide powders, 4 parts of silicon powders, 0.15 part of water reducer, 0.02 part of explosion-proof fiber, 1 part of heat-resistant steel fiber.The cement kiln tertiary-air pipe bend prefabricated component prepared by this proportioning has good alkali resistant erosional competency and erosion resistibility.
Further, comprise according to mass fraction: the silicon carbide of the black corundum of the black corundum of 15 parts of 5 ~ 8mm, the black corundum of 18 parts of 3 ~ 5mm, 13 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 12 parts, 10 parts of 0 ~ 1mm, 6 parts be not more than 200 object carborundum powders, 10 parts be not more than 200 object brown alundum powders, 7 parts of aluminous cements, 5 parts of aluminum oxide powders, 4 parts of silicon powders, 0.10 part of water reducer, 0.02 part of explosion-proof fiber, 1 part of heat-resistant steel fiber.It is high that the cement kiln tertiary-air pipe bend prefabricated component prepared by this proportioning has toughness, the features such as erosion resistibility is strong, can work-ing life of significant prolongation tertiary-air pipe.
Further, comprise according to mass fraction: the silicon carbide of the black corundum of the black corundum of 18 parts of 5 ~ 8mm, the black corundum of 15 parts of 3 ~ 5mm, 10 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 10 parts, 20 parts of 0 ~ 1mm, 8 parts be not more than 200 object carborundum powders, 6 parts be not more than 200 object brown alundum powders, 6 parts of aluminous cements, 3 parts of aluminum oxide powders, 4 parts of silicon powders, 0.12 part of water reducer, 0.01 part of explosion-proof fiber, 0.8 part of heat-resistant steel fiber.It is large that the cement kiln tertiary-air pipe bend prefabricated component prepared by this proportioning has volume density, and thermal shock resistance waits remarkable advantage well.
Further, Al in described black corundum
2o
3mass percentage>=75%.
Further, SiC mass percentage >=95% in described silicon carbide.
Further, Al in described aluminous cement
2o
3mass percentage>=68%.
Further, the described heat-resistant steel fiber trade mark is 430.
Compared with prior art advantage of the present invention is: the present invention adopts black corundum and silicon carbide as the material of main part of tertiary-air pipe bend prefabricated component, adopt black corundum can make substrate material at high temperature can with fully produce between aggregate be connected, cementing effect, effective filling aggregate hole, the significant high-temperature behavior improving material, thus the wear resistance and the alkali resistant aggressiveness that improve tertiary-air pipe bend liner.And adopt prefabricated component as the inner lining material of tertiary-air pipe, solve the shortcoming of mould material site operation, eliminate the steps such as anchoring piece welding, and prefabrication has sufficient engineering time and good construction environment, the restriction of environment or seasonal conditions can not be subject to, fully can ensure construction quality, significantly reduce because of the quality problems caused lack of standardization of constructing, the appearance of the irregular crackle effectively avoiding mould material inside to cause because of structural stress, wear resisting property is improved, and substantially prolongs the work-ing life of tertiary-air pipe liner.
Embodiment
Embodiment one:
A kind of cement kiln tertiary-air pipe bend prefabricated component, comprises according to mass fraction: the silicon carbide of the black corundum of the black corundum of 25 parts of 5 ~ 8mm, the black corundum of 15 parts of 3 ~ 5mm, 10 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 10 parts, 10 parts of 0 ~ 1mm, 10 parts be not more than 200 object carborundum powders, 7 parts be not more than 200 object brown alundum powders, 4 parts of aluminous cements, 3 parts of aluminum oxide powders, 6 parts of silicon powders, 0.10 part of water reducer, 0.01 part of explosion-proof fiber, 0.5 part of heat-resistant steel fiber.Al in described black corundum
2o
3mass percentage>=75%.SiC mass percentage >=95% in described silicon carbide.Al in described aluminous cement
2o
3mass percentage>=68%.The described heat-resistant steel fiber trade mark is 430.
After various raw material being prepared in proportion mixing, the water of additional mass percent 4.1% stirs, then casting in a mold, after the demoulding through maintenance, dry obtained cement kiln tertiary-air pipe bend prefabricated component.
Embodiment two:
Be with the difference of other embodiment: a kind of cement kiln tertiary-air pipe bend prefabricated component, comprises according to mass fraction: the silicon carbide of the black corundum of the black corundum of 15 parts of 5 ~ 8mm, the black corundum of 20 parts of 3 ~ 5mm, 15 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 15 parts, 10 parts of 0 ~ 1mm, 6 parts be not more than 200 object carborundum powders, 5 parts be not more than 200 object brown alundum powders, 7 parts of aluminous cements, 3 parts of aluminum oxide powders, 4 parts of silicon powders, 0.15 part of water reducer, 0.02 part of explosion-proof fiber, 1 part of heat-resistant steel fiber.
After various raw material being prepared in proportion mixing, the water of additional mass percent 5.2% stirs, then casting in a mold, after the demoulding through maintenance, dry obtained cement kiln tertiary-air pipe bend prefabricated component.
Embodiment three:
Be with the difference of other embodiment: a kind of cement kiln tertiary-air pipe bend prefabricated component, comprises according to mass fraction: the silicon carbide of the black corundum of the black corundum of 15 parts of 5 ~ 8mm, the black corundum of 18 parts of 3 ~ 5mm, 13 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 12 parts, 10 parts of 0 ~ 1mm, 6 parts be not more than 200 object carborundum powders, 10 parts be not more than 200 object brown alundum powders, 7 parts of aluminous cements, 5 parts of aluminum oxide powders, 4 parts of silicon powders, 0.10 part of water reducer, 0.02 part of explosion-proof fiber, 1 part of heat-resistant steel fiber.
After various raw material being prepared in proportion mixing, the water of additional mass percent 4.5% stirs, then casting in a mold, after the demoulding through maintenance, dry obtained cement kiln tertiary-air pipe bend prefabricated component.
Embodiment four:
Be with the difference of other embodiment: a kind of cement kiln tertiary-air pipe bend prefabricated component, comprises according to mass fraction: the silicon carbide of the black corundum of the black corundum of 18 parts of 5 ~ 8mm, the black corundum of 15 parts of 3 ~ 5mm, 10 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 10 parts, 20 parts of 0 ~ 1mm, 8 parts be not more than 200 object carborundum powders, 6 parts be not more than 200 object brown alundum powders, 6 parts of aluminous cements, 3 parts of aluminum oxide powders, 4 parts of silicon powders, 0.12 part of water reducer, 0.01 part of explosion-proof fiber, 0.8 part of heat-resistant steel fiber.
After various raw material being prepared in proportion mixing, the water of additional mass percent 5.6% stirs, then casting in a mold, after the demoulding through maintenance, dry obtained cement kiln tertiary-air pipe bend prefabricated component.
The present invention adopts black corundum and silicon carbide as the material of main part of tertiary-air pipe bend prefabricated component, take full advantage of black corundum strong but pliable in texture, compact structure, volume density is large, the features such as good toughness, ensure that substrate material at high temperature can with fully produce between aggregate be connected, cementing effect, effective filling aggregate hole, the significant high-temperature behavior improving material, thus the wear resistance and the alkali resistant aggressiveness that improve tertiary-air pipe bend liner.And adopt prefabricated component as the inner lining material of tertiary-air pipe, solve the shortcoming of mould material site operation, eliminate the steps such as anchoring piece welding, and prefabrication has sufficient engineering time and good construction environment, the restriction of environment or seasonal conditions can not be subject to, fully can ensure construction quality, significantly reduce because of the quality problems caused lack of standardization of constructing, the appearance of the irregular crackle effectively avoiding mould material inside to cause because of structural stress, wear resisting property is improved, and substantially prolongs the work-ing life of tertiary-air pipe liner.
With α-Al in black corundum
2o
3be main ore deposit phase with hercynite, utilize black corundum strong but pliable in texture, compact structure, volume density is large, and the features such as good toughness, coordinate with high quality raw material fine powder and super-fine powder, make prefabricated component.This prefabricated component has good volume stability, wear resistance and mechanical behavior under high temperature, on-site consolidation makes construction easier and easily carries out, directly eliminate the steps such as Site, cast or ramming, save the engineering time, and the installation of kilneye prefabricated component makes the working-yard of cement rotary kiln not by construction environment and the impact in season, ensure that construction quality, effectively extend the work-ing life of tertiary-air pipe liner.
The foregoing is only specific embodiments of the invention, but technical characteristic of the present invention is not limited thereto, any those skilled in the art is in the field of the invention, and the change done or modification are all encompassed among the scope of the claims of the present invention.
Claims (9)
1. a cement kiln tertiary-air pipe bend prefabricated component, it is characterized in that: comprise according to mass fraction: the black corundum of 15 ~ 25 parts of 5 ~ 8mm, the black corundum of 15 ~ 20 parts of 3 ~ 5mm, the black corundum of 10 ~ 15 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 10 ~ 15 parts, the silicon carbide of 10 ~ 20 parts of 0 ~ 1mm, 6 ~ 10 parts are not more than 200 object carborundum powders, 5 ~ 10 parts are not more than 200 object brown alundum powders, 4 ~ 7 parts of aluminous cements, 3 ~ 5 parts of aluminum oxide powders, 4 ~ 6 parts of silicon powders, 0.10 ~ 0.15 part of water reducer, 0.01 ~ 0.02 part of explosion-proof fiber, 0.5 ~ 1 part of heat-resistant steel fiber.
2. a kind of cement kiln tertiary-air pipe bend prefabricated component according to claim 1, is characterized in that: comprise according to mass fraction: the silicon carbide of the black corundum of the black corundum of 25 parts of 5 ~ 8mm, the black corundum of 15 parts of 3 ~ 5mm, 10 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 10 parts, 10 parts of 0 ~ 1mm, 10 parts be not more than 200 object carborundum powders, 7 parts be not more than 200 object brown alundum powders, 4 parts of aluminous cements, 3 parts of aluminum oxide powders, 6 parts of silicon powders, 0.10 part of water reducer, 0.01 part of explosion-proof fiber, 0.5 part of heat-resistant steel fiber.
3. a kind of cement kiln tertiary-air pipe bend prefabricated component according to claim 1, is characterized in that: comprise according to mass fraction: the silicon carbide of the black corundum of the black corundum of 15 parts of 5 ~ 8mm, the black corundum of 20 parts of 3 ~ 5mm, 15 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 15 parts, 10 parts of 0 ~ 1mm, 6 parts be not more than 200 object carborundum powders, 5 parts be not more than 200 object brown alundum powders, 7 parts of aluminous cements, 3 parts of aluminum oxide powders, 4 parts of silicon powders, 0.15 part of water reducer, 0.02 part of explosion-proof fiber, 1 part of heat-resistant steel fiber.
4. a kind of cement kiln tertiary-air pipe bend prefabricated component according to claim 1, is characterized in that: comprise according to mass fraction: the silicon carbide of the black corundum of the black corundum of 15 parts of 5 ~ 8mm, the black corundum of 18 parts of 3 ~ 5mm, 13 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 12 parts, 10 parts of 0 ~ 1mm, 6 parts be not more than 200 object carborundum powders, 10 parts be not more than 200 object brown alundum powders, 7 parts of aluminous cements, 5 parts of aluminum oxide powders, 4 parts of silicon powders, 0.10 part of water reducer, 0.02 part of explosion-proof fiber, 1 part of heat-resistant steel fiber.
5. a kind of cement kiln tertiary-air pipe bend prefabricated component according to claim 1, is characterized in that: comprise according to mass fraction: the silicon carbide of the black corundum of the black corundum of 18 parts of 5 ~ 8mm, the black corundum of 15 parts of 3 ~ 5mm, 10 parts of 1 ~ 3mm, 0 ~ 1mm black corundum of 10 parts, 20 parts of 0 ~ 1mm, 8 parts be not more than 200 object carborundum powders, 6 parts be not more than 200 object brown alundum powders, 6 parts of aluminous cements, 3 parts of aluminum oxide powders, 4 parts of silicon powders, 0.12 part of water reducer, 0.01 part of explosion-proof fiber, 0.8 part of heat-resistant steel fiber.
6. a kind of cement kiln tertiary-air pipe bend prefabricated component according to claim 1, is characterized in that: Al in described black corundum
2o
3mass percentage>=75%.
7. a kind of cement kiln tertiary-air pipe bend prefabricated component according to claim 1, is characterized in that: SiC mass percentage >=95% in described silicon carbide.
8. a kind of cement kiln tertiary-air pipe bend prefabricated component according to claim 1, is characterized in that: Al in described aluminous cement
2o
3mass percentage>=68%.
9. a kind of cement kiln tertiary-air pipe bend prefabricated component according to claim 1, is characterized in that: the described heat-resistant steel fiber trade mark is 430.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510168808.5A CN104829244A (en) | 2015-04-10 | 2015-04-10 | Tertiary air duct curve prefabricated component for cement kiln |
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|---|---|---|---|
| CN201510168808.5A CN104829244A (en) | 2015-04-10 | 2015-04-10 | Tertiary air duct curve prefabricated component for cement kiln |
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| CN104829244A true CN104829244A (en) | 2015-08-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702056A (en) * | 2016-11-28 | 2017-05-24 | 浙江锦诚新材料股份有限公司 | Iron tap channel swing spout prefabricated piece and manufacturing method thereof |
| CN106747495A (en) * | 2016-11-28 | 2017-05-31 | 浙江锦诚新材料股份有限公司 | A kind of high-temperature wearable coating and preparation method thereof |
| CN111646809A (en) * | 2020-05-19 | 2020-09-11 | 北京利尔高温材料股份有限公司 | Castable for permanent layer of steel ladle |
| CN117069504A (en) * | 2023-08-21 | 2023-11-17 | 郑州利孚新材料有限公司 | Titanium-aluminum-based ceramic composite material |
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| CN201318526Y (en) * | 2008-12-19 | 2009-09-30 | 安徽瑞泰新材料科技有限公司 | Wear-resistant lining mass structure for gas pipeline in high-temperature industrial stove |
| CN202166307U (en) * | 2011-06-28 | 2012-03-14 | 南京联合荣大工程材料有限责任公司 | Prefabricated member for tertiary air pipe gate in rotary cement kiln |
| CN102878811A (en) * | 2012-09-28 | 2013-01-16 | 长兴国盛耐火材料有限公司 | Special prefabricated part for tertiary air duct bifurcation positions |
| CN103307883A (en) * | 2013-06-25 | 2013-09-18 | 淄博中科达耐火材料有限公司 | Fire-proof fabricated part for tertiary air duct of dry process cement kiln and manufacturing method of fire-proof fabricated part |
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2015
- 2015-04-10 CN CN201510168808.5A patent/CN104829244A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201318526Y (en) * | 2008-12-19 | 2009-09-30 | 安徽瑞泰新材料科技有限公司 | Wear-resistant lining mass structure for gas pipeline in high-temperature industrial stove |
| CN202166307U (en) * | 2011-06-28 | 2012-03-14 | 南京联合荣大工程材料有限责任公司 | Prefabricated member for tertiary air pipe gate in rotary cement kiln |
| CN102878811A (en) * | 2012-09-28 | 2013-01-16 | 长兴国盛耐火材料有限公司 | Special prefabricated part for tertiary air duct bifurcation positions |
| CN103307883A (en) * | 2013-06-25 | 2013-09-18 | 淄博中科达耐火材料有限公司 | Fire-proof fabricated part for tertiary air duct of dry process cement kiln and manufacturing method of fire-proof fabricated part |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702056A (en) * | 2016-11-28 | 2017-05-24 | 浙江锦诚新材料股份有限公司 | Iron tap channel swing spout prefabricated piece and manufacturing method thereof |
| CN106747495A (en) * | 2016-11-28 | 2017-05-31 | 浙江锦诚新材料股份有限公司 | A kind of high-temperature wearable coating and preparation method thereof |
| CN111646809A (en) * | 2020-05-19 | 2020-09-11 | 北京利尔高温材料股份有限公司 | Castable for permanent layer of steel ladle |
| CN117069504A (en) * | 2023-08-21 | 2023-11-17 | 郑州利孚新材料有限公司 | Titanium-aluminum-based ceramic composite material |
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Address after: 313100 new industrial park, pheasant City, Huzhou, Zhejiang, Changxing County Applicant after: Zhejiang Jincheng new material Limited by Share Ltd Address before: 313100, Huzhou, Changxing County, Zhejiang province pheasant Town Industrial Zone Zhejiang Jincheng refractory materials Co., Ltd. Applicant before: Zhejiang Jincheng Refractories Co., Ltd. |
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