CN104086190A - Discharge hood spray paint - Google Patents
Discharge hood spray paint Download PDFInfo
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- CN104086190A CN104086190A CN201410293976.2A CN201410293976A CN104086190A CN 104086190 A CN104086190 A CN 104086190A CN 201410293976 A CN201410293976 A CN 201410293976A CN 104086190 A CN104086190 A CN 104086190A
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- parts
- fine powder
- mullite
- spray material
- head cover
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Abstract
The invention relates to a refractory material, particularly a discharge hood spray paint which aims to solve the problem of low service life of the composite lining composed of calcium silicate boards and anti-stripping high-alumina bricks in the prior art. The discharge hood spray paint is composed of the following components in parts by mass: 40-48 parts of 1-3mm mullite aggregate, 20-30 parts of kyanite, 10-20 parts of mullite fine powder, 20-30 parts of electrofusion calcium aluminate cement fine powder, 0.1-0.3 part of hardening accelerator, 1.0-1.5 parts of composite phosphate, 8-15 parts of composite ultramicropowder, 0.15-0.3 part of organic explosion-proof fiber and 6-10 parts of water. The discharge hood spray paint has higher adhesive rate high adhesion strength and lower water content, can ensure no collapse in the spray process, can not generate cracks or flakes in the baking process, still maintains the sufficient strength in the low-temperature, medium-temperature or high-temperature heating process, is always kept at stable volume, and has the advantages of high fire resistance, high wear resistance and high erosion resistance.
Description
Technical field
The present invention relates to a kind of refractory materials, relate in particular to a kind of kiln head cover spray material.
Background technology
Kiln head cover is positioned at the discharge end of rotary kiln, and coal injection pipe sees through kiln head cover and gos deep in kiln body; This position is subject to wearing and tearing to a certain degree, and refractory surface has dust skinning and is subject to flame radiaton; Along with rotary kiln is to maximization future development, in kiln head cover, empty span is also increasing, be subject to the effect of the frequent and thermal shock of wear-resisting, cold and hot sudden change, adopt the compound lining of calcium silicate board and anti-peeling high aluminium brick composition to use less than six months and just frequently drop, poor effect.
The kiln head cover of cement kiln is domes, before refractory castable cast, must make complex-shaped wooden unit, has artificial construction to complete, and speed of application is slow, and construction quality also cannot ensure, affects its work-ing life, needs the time of maintenance also very long after construction.
Summary of the invention
The invention provides a kind of kiln head cover spray material, be intended to solve the low problem of compound lining life-span of available technology adopting calcium silicate board and anti-peeling high aluminium brick composition.
In order to solve above technical problem, the present invention is achieved through the following technical solutions: a kind of kiln head cover spray material, comprise 1～3mm mullite aggregate of 40～48 parts, the kyanite of 20～30 parts, the mullite fine powder of 10～20 parts, the electric smelting aluminous cement fine powder of 20～30 parts, the accelerator for hardening slaked lime of 0.1～0.3 part, the composite phosphate of 1.0～1.5 parts, the compound super-fine powder of 8～15 parts, the organic explosion-proof fiber of 0.15～0.3 part, the water of 6～10 parts according to quality share.
Further, comprise 1～3mm mullite aggregate of 42 parts, 27 parts of kyanites, the mullite fine powder of 15 parts, the electric smelting aluminous cement fine powder of 25 parts, the accelerator for hardening slaked lime of 0.2 part, the composite phosphate of 1.2 parts, the compound super-fine powder of 10 parts, the organic explosion-proof fiber of 0.2 part, the water of 7 parts according to quality share; Adopt this quality share ratio, the price of spray material is lower, and better performances.
Further, comprise 1～3mm mullite aggregate of 40 parts, 20 parts of kyanites, the mullite fine powder of 10 parts, the electric smelting aluminous cement fine powder of 30 parts, the accelerator for hardening slaked lime of 0.3 part, the composite phosphate of 1.5 parts, the compound super-fine powder of 15 parts, the organic explosion-proof fiber of 0.3 part, the water of 10 parts according to quality share; Adopt this quality share ratio, spray material is most economical.
Further, comprise 1～3mm mullite aggregate of 48 parts, 30 parts of kyanites, the mullite fine powder of 20 parts, the electric smelting aluminous cement fine powder of 20 parts, the accelerator for hardening slaked lime of 0.1 part, the composite phosphate of 1.0 parts, the compound super-fine powder of 8 parts, the organic explosion-proof fiber of 0.15 part, the water of 6 parts according to quality share; Performance the best of spray material.
Further, described kyanite is not more than 5mm by granularity, and the ratio of the kyanite total mass that the kyanite that wherein granularity is 1～5mm and granularity are 0～1mm is 2/5～3/5; Fine particle can improve the desired plasticity-of adhesivity; Coarse particles can time spray repair layer more stable, improve spray repair layer density and erosion resistance; When the ratio of volume is during higher than the maximum value of this scope, in spraying process, too much can there is higher segregation shape in coarse particles, and can cause rebound degree to rise in pipeline, increases the loss of material; When the ratio of volume is during lower than the minimum value of this scope, fine particle content too much can increase drying period, the peeling off quantity and make spray repair layer become unstable of coating.
Further, described compound super-fine powder is made up of Reactive alumina and silicon powder; Silicon powder meet form after water-Si-OH micelle plays bonding effect under low-temperature condition; Activated alumina has unimodal activity, reunites without crystal, is used in conjunction with and under hot conditions, can forms column, acicular mullite crystal, thereby make spray material obtain better high-temperature behavior with silicon powder.
Compared with prior art advantage of the present invention is: the present invention is taking mullite aggregate, kyanite and mullite fine powder as main raw material; Add electric smelting aluminous cement in playing cohesive action, contribute to improve heat resistance; By adding the slaked lime of 0.1～0.3 part as accelerator for hardening, can shorten the nucleation time of hydrated cementitious mineral facies, promote the formation of hydrated minerals phase and grow up; Add the composite phosphate water reducer of 1.0～1.5 parts, make the amount of water of spray material at 6～10 parts, reduced amount of water, the volume density of spray material is increased substantially, void content significantly reduces; Add the compound super-fine powder of 8～15 parts and can improve low temperature and the hot strength of spray material, can in playing good combination effect, contribute to improve heat resistance and adhesion property; Being added with explosion-proof fiber can increase the wet strength of sprayed coating, and after can realizing and having sprayed, can light a fire is rapidly heated resumes production, and has ensured the long-term continuous and steady operation of rotary kiln.
The present invention has higher adhesive rate, large adhesion strength and lower water content, can ensure not produce and collapse in spraying process, in bake process, do not crack and peel off, in the heat-processed such as low temperature, middle gentle high temperature, remain enough intensity, remain volume stability, fire-resistant abrasion-proof resistance to fouling is good.
Embodiment
Embodiment mono-:
A kind of kiln head cover spray material, comprise 1～3mm mullite aggregate of 42 parts, 27 parts of kyanites, the mullite fine powder of 15 parts, the electric smelting aluminous cement fine powder of 25 parts, the accelerator for hardening slaked lime of 0.2 part, the composite phosphate of 1.2 parts, the compound super-fine powder of 10 parts, the organic explosion-proof fiber of 0.2 part, the water of 7 parts according to quality share; Described kyanite is not more than 5mm by granularity, and the ratio of the kyanite total mass that the kyanite that wherein granularity is 1～5mm and granularity are 0～1mm is 2/5～3/5; Described compound super-fine powder is made up of Reactive alumina and low pore silicon powder.
Embodiment bis-:
Be with the difference of embodiment mono-: comprise 1～3mm mullite aggregate of 40 parts, 20 parts of kyanites, the mullite fine powder of 10 parts, the electric smelting aluminous cement fine powder of 30 parts, the accelerator for hardening slaked lime of 0.3 part, the composite phosphate of 1.5 parts, the compound super-fine powder of 15 parts, the organic explosion-proof fiber of 0.3 part, the water of 10 parts according to quality share; Adopt this quality share ratio, spray material is most economical.
Embodiment tri-:
Be with the difference of above embodiment: comprise 1～3mm mullite aggregate of 48 parts, 30 parts of kyanites, the mullite fine powder of 20 parts, the electric smelting aluminous cement fine powder of 20 parts, the accelerator for hardening slaked lime of 0.1 part, the composite phosphate of 1.0 parts, the compound super-fine powder of 8 parts, the organic explosion-proof fiber of 0.15 part, the water of 6 parts according to quality share; Performance the best of spray material.
Adopt spray gun the spray material in the present invention to be sprayed into the furnace lining of kiln head cover.
In the present invention, add compound super-fine powder can improve spray material low temperature and hot strength; By adding composite phosphate can reduce water consumption; Add organic explosion-proof fiber and can realize the quick baking of sprayed coating.
The aggregate of kyanite is chosen in 20～30 parts, and within the scope of this, the high temperature resistant and thermal shock resistance of spray material is higher; In the time that the aggregate of kyanite exceedes 30 parts, the intensity of spray material can decline, and wear resisting property reduces; When the aggregate of kyanite is during lower than 20 parts, the high temperature resistant and corrosion resistant performance of spray material sharply declines; Wherein 27 parts of the bests, over-all properties the best.
The present invention is directed to the working conditions of kiln head cover liner, adopt mullite synthesizing and the compound abrasion-proof and refractory spray material of preparing of kyanite, not only brought into play that mullite resistance to elevated temperatures is strong, anti-thermal shock good stability, intensity advantages of higher, and utilized kyanite to there is the performance characteristics such as corrosion-resistant, high temperature resistant, anti-contraction; Changed the brickwork construction of kiln head cover liner in the past, both can repair for kiln head cover, also can initially construct for kiln head cover, adopted spraying method without installation mold, the construction period is short, and construction cost is low, and work-ing life is more than 2 years.
The foregoing is only specific embodiments of the invention, but technical characterictic of the present invention is not limited to this, any those skilled in the art is in the field of the invention, and the variation of doing or modification are all encompassed among the scope of the claims of the present invention.
Claims (6)
1. a kiln head cover spray material, it is characterized in that: comprise 1～3mm mullite aggregate of 40～48 parts, the kyanite of 20～30 parts, the mullite fine powder of 10～20 parts, the electric smelting aluminous cement fine powder of 20～30 parts, the accelerator for hardening slaked lime of 0.1～0.3 part, the composite phosphate of 1～1.5 part, the compound super-fine powder of 8～15 parts, the organic explosion-proof fiber of 0.15～0.3 part, the water of 6～10 parts according to quality share.
2. a kind of kiln head cover spray material according to claim 1, it is characterized in that: comprise 1～3mm mullite aggregate of 42 parts, 27 parts of kyanites, the mullite fine powder of 15 parts, the electric smelting aluminous cement fine powder of 25 parts, the accelerator for hardening slaked lime of 0.2 part, the composite phosphate of 1.2 parts, the compound super-fine powder of 10 parts, the organic explosion-proof fiber of 0.2 part, the water of 7 parts according to quality share.
3. a kind of kiln head cover spray material according to claim 1, it is characterized in that: comprise 1～3mm mullite aggregate of 40 parts, 20 parts of kyanites, the mullite fine powder of 10 parts, the electric smelting aluminous cement fine powder of 30 parts, the accelerator for hardening slaked lime of 0.3 part, the composite phosphate of 1.5 parts, the compound super-fine powder of 15 parts, the organic explosion-proof fiber of 0.3 part, the water of 10 parts according to quality share.
4. a kind of kiln head cover spray material according to claim 1, it is characterized in that: comprise 1～3mm mullite aggregate of 48 parts, 30 parts of kyanites, the mullite fine powder of 20 parts, the electric smelting aluminous cement fine powder of 20 parts, the accelerator for hardening slaked lime of 0.1 part, the composite phosphate of 1.0 parts, the compound super-fine powder of 8 parts, the organic explosion-proof fiber of 0.15 part, the water of 6 parts according to quality share.
5. a kind of kiln head cover spray material according to claim 1, is characterized in that: described kyanite is not more than 5mm by granularity, and the kyanite mass ratio that the kyanite that wherein granularity is 1～5mm and granularity are 0～1mm is 2/5～3/5.
6. a kind of kiln head cover spray material according to claim 1, is characterized in that: described compound super-fine powder is made up of Reactive alumina and silicon powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410293976.2A CN104086190B (en) | 2014-06-26 | 2014-06-26 | A kind of kiln head cover spray material |
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| CN201410293976.2A CN104086190B (en) | 2014-06-26 | 2014-06-26 | A kind of kiln head cover spray material |
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| CN104086190A true CN104086190A (en) | 2014-10-08 |
| CN104086190B CN104086190B (en) | 2016-02-10 |
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| CN201410293976.2A Active CN104086190B (en) | 2014-06-26 | 2014-06-26 | A kind of kiln head cover spray material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829246A (en) * | 2015-04-10 | 2015-08-12 | 浙江锦诚耐火材料有限公司 | Refractory spray paint for a steel ladle work lining and preparation method thereof |
| CN110194663A (en) * | 2019-05-20 | 2019-09-03 | 陈海斗 | A kind of preparation method of wearable ceramic coat layer |
| CN114292098A (en) * | 2021-12-29 | 2022-04-08 | 江苏材睿科技有限公司 | Anti-erosion wear-resistant ceramic spray coating for rotary kiln and preparation method and process thereof |
| CN115745633A (en) * | 2022-11-21 | 2023-03-07 | 浙江锦诚新材料股份有限公司 | Cordierite-mullite spray coating and preparation method thereof |
| CN116178993A (en) * | 2023-03-02 | 2023-05-30 | 北京首钢股份有限公司 | Spray paint for spherical roof of iron-making hot blast stove and baking method thereof |
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| CN102060549A (en) * | 2009-11-16 | 2011-05-18 | 中冶建筑研究总院有限公司 | Low springback rate spraying and coating material for thermal-state blast furnace maintenance and preparation method thereof |
| CN103588491A (en) * | 2013-11-08 | 2014-02-19 | 贵阳联合高温材料有限公司 | High-strength baking-free flint clay-mullite spray coating as well as preparation and using methods thereof |
| CN103664204A (en) * | 2013-11-12 | 2014-03-26 | 长兴兴鹰新型耐火建材有限公司 | Silicon carbide anti-skinning fire-resistant spray paint |
| CN103755372A (en) * | 2014-02-09 | 2014-04-30 | 张婷 | Medium-temperature spray coating material for pipeline |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102060549A (en) * | 2009-11-16 | 2011-05-18 | 中冶建筑研究总院有限公司 | Low springback rate spraying and coating material for thermal-state blast furnace maintenance and preparation method thereof |
| CN103588491A (en) * | 2013-11-08 | 2014-02-19 | 贵阳联合高温材料有限公司 | High-strength baking-free flint clay-mullite spray coating as well as preparation and using methods thereof |
| CN103664204A (en) * | 2013-11-12 | 2014-03-26 | 长兴兴鹰新型耐火建材有限公司 | Silicon carbide anti-skinning fire-resistant spray paint |
| CN103755372A (en) * | 2014-02-09 | 2014-04-30 | 张婷 | Medium-temperature spray coating material for pipeline |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829246A (en) * | 2015-04-10 | 2015-08-12 | 浙江锦诚耐火材料有限公司 | Refractory spray paint for a steel ladle work lining and preparation method thereof |
| CN110194663A (en) * | 2019-05-20 | 2019-09-03 | 陈海斗 | A kind of preparation method of wearable ceramic coat layer |
| CN114292098A (en) * | 2021-12-29 | 2022-04-08 | 江苏材睿科技有限公司 | Anti-erosion wear-resistant ceramic spray coating for rotary kiln and preparation method and process thereof |
| CN115745633A (en) * | 2022-11-21 | 2023-03-07 | 浙江锦诚新材料股份有限公司 | Cordierite-mullite spray coating and preparation method thereof |
| CN115745633B (en) * | 2022-11-21 | 2023-08-29 | 浙江锦诚新材料股份有限公司 | Cordierite-mullite spray coating and preparation method thereof |
| CN116178993A (en) * | 2023-03-02 | 2023-05-30 | 北京首钢股份有限公司 | Spray paint for spherical roof of iron-making hot blast stove and baking method thereof |
| CN116178993B (en) * | 2023-03-02 | 2024-03-29 | 北京首钢股份有限公司 | Spray paint for spherical roof of iron-making hot blast stove and baking method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104086190B (en) | 2016-02-10 |
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Address after: 313100 pheasant Town Industrial Zone, Huzhou, Zhejiang, Changxing County Patentee 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. Patentee before: Zhejiang Jincheng Refractories Co., Ltd. |