CN104446541A - Coating capable of enhancing kiln coating adherence of firing zone of rotary cement kiln and application of coating - Google Patents
Coating capable of enhancing kiln coating adherence of firing zone of rotary cement kiln and application of coating Download PDFInfo
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- CN104446541A CN104446541A CN201410667735.XA CN201410667735A CN104446541A CN 104446541 A CN104446541 A CN 104446541A CN 201410667735 A CN201410667735 A CN 201410667735A CN 104446541 A CN104446541 A CN 104446541A
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- CN
- China
- Prior art keywords
- coating
- magnesia
- rotary kiln
- clinkering zone
- kiln
- 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.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 121
- 238000000576 coating method Methods 0.000 title claims abstract description 121
- 239000004568 cement Substances 0.000 title claims abstract description 55
- 230000002708 enhancing effect Effects 0.000 title abstract 2
- 238000010304 firing Methods 0.000 title abstract 2
- 239000011449 brick Substances 0.000 claims abstract description 49
- 229910001691 hercynite Inorganic materials 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000011398 Portland cement Substances 0.000 claims abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 3
- 239000002002 slurry Substances 0.000 claims description 12
- 235000011194 food seasoning agent Nutrition 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000011404 masonry cement Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 229940067573 brown iron oxide Drugs 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000011161 development Methods 0.000 abstract description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 abstract 1
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 abstract 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical group [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 239000011819 refractory material Substances 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- AGWMJKGGLUJAPB-UHFFFAOYSA-N aluminum;dicalcium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Ca+2].[Ca+2].[Fe+3] AGWMJKGGLUJAPB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a coating capable of enhancing the kiln coating adherence of a firing zone of a rotary cement kiln and application of the coating. The kiln coating adherence of a magnesia-hercynite brick can be effectively improved. The coating comprises the following chemical components in percentage by weight: 50%-70% of commercial alumina powder, 20%-45% of iron oxide powder, 1-3% of portland cement chamotte powder, 1%-3% of sodium hexametaphosphate and 1%-3% of sodium carboxymethylcellulose. The coating comprises the following application steps: cleaning the surface of the magnesia-hercynite brick; uniformly spraying the coating on the surface of the magnesia-hercynite brick to form a paintcoat with the thickness of 1.5-2mm; and after spraying, standing for 5-8 hours, so that the paintcoat is naturally dried. With the magnesia-hercynite brick as a kiln coating material, the kiln coating adherence is enhanced by adopting the coating; the raw materials used by the coating are low in price; the kiln coating adherence is significantly improved; and the chrome-free development process of the rotary cement kiln is effectively promoted.
Description
Technical field
The present invention relates to cement rotary kiln clinkering zone refractory materials and application thereof, particularly coating and the application thereof of kliner coating performance hung by a kind of refinforced cement rotary kiln clinkering zone.
Background technology
The refractory materials of cement rotary kiln clinkering zone is magnesia chrome brick, and magnesia chrome brick is using and discarded brick is deposited in process, and the sexavalent chrome of generation can cause serious harm to environment.Exploitation cement rotary kiln clinkering zone Trend of Chrome-free refractory materials has become the emphasis of fire resisting material field research.The Chrome-free product developed at present mainly contains: magnesia-spinel brick, dolomite brick, magnesium zirconia block and ferro-magnesium-aluminum spinelle etc.By finding above-mentioned several prods study and use for a long time, magnesia-hercynite brick has excellent high-temperature behavior and alkali resistant erosional competency, is to replace magnesia chrome brick for cement rotary kiln clinkering zone cost performance best material.But magnesia-hercynite brick existed at the use initial stage hangs kliner coating difficulty, and the problem such as easily come off.Good extension kliner coating performance is applied to the prerequisite performance of cement rotary kiln clinkering zone refractory materials.Certain thickness kliner coating can effectively protect revolution kiln lining body refractory materials not frayed, reduces kiln external body temperature, ensures that kiln body steel construction is indeformable, improve the utilization ratio of the energy.Therefore, the extension kliner coating performance issue solving magnesia-hercynite brick is needed.
Summary of the invention
The invention provides coating and the application thereof that kliner coating performance hung by a kind of refinforced cement rotary kiln clinkering zone, effectively can improve the extension kliner coating performance of magnesia-hercynite brick.
A coating for kliner coating performance hung by refinforced cement rotary kiln clinkering zone, its chemical composition and weight percent composed as follows:
The coating that kliner coating performance hung by described a kind of refinforced cement rotary kiln clinkering zone is the slurry that material is evenly distributed, and after this slurry is fully mixed in stirrer by above-mentioned powder material, the normal temperature tap water mediation stirring adding powder material gross weight 20 ~ 30% forms.
The coating of kliner coating performance hung by described a kind of refinforced cement rotary kiln clinkering zone, and wherein the granularity of industrial alumina powder is less than 0.074mm, Al
2o
3weight percent content>=99%; The granularity of brown iron oxide is less than 0.088mm, Fe
2o
3weight percent content>=95%; Portland cement clinker Powder Particle Size is less than 0.044mm, and CaO weight percent content is 35 ~ 40%; Sodium hexametaphosphate 99 granularity is less than 0.25mm, P
2o
5weight percent content>=68%.
An application for the coating of kliner coating performance hung by refinforced cement rotary kiln clinkering zone, and the step of its application is as follows:
A. by clean for the cement rotary kiln clinkering zone magnesia-hercynite brick removing surface laid;
B. get refinforced cement rotary kiln clinkering zone and hang the coating even application of kliner coating performance on cement kiln working lining surface, form the coating of thickness at 1.5-2mm, temperature during spraying in kiln controls at 15 DEG C-50 DEG C;
C. working lining brick leaves standstill 5-8 hour after sprayed coating, makes coating seasoning.
The application of the coating of kliner coating performance hung by described a kind of refinforced cement rotary kiln clinkering zone, and its step of answering is as follows:
A. by clean for the magnesia-hercynite brick removing surface cooled after kiln discharge;
B. get refinforced cement rotary kiln clinkering zone and hang the coating even application of kliner coating performance on the surface of magnesia-hercynite brick, form the coating of thickness 1 ~ 1.5mm, during spraying, the surface temperature of brick is at 20 DEG C-40 DEG C;
C. the magnesia-hercynite brick after sprayed coating leaves standstill 5 ~ 8 hours, makes coating seasoning;
D., after the magnesia-hercynite brick of coating being piled up packaging, cement mill is transported to for masonry cement kiln clinkering zone.
The present invention improves magnesia-hercynite brick: cement rotary kiln burning zone temperature is generally 1450-1550 DEG C, at such a temperature Fe in dope layer
2o
3react with its O of the M in working lining and generate magnesium ferrite, thus make dope layer energy and working lining brick surface well chelating.On the other hand, the Al at such a temperature in coating
2o
3and Fe
2o
3be easy to generate tetracalcium aluminoferrite (4CaO.Al with the CaO reaction in cement clinker
2o
3.Fe
2o
3), firmly stick to brick surface, form fast stable kliner coating.
Compared with of the present invention and existing similar technique, its significant beneficial effect is embodied in:
The present invention take magnesia-hercynite brick as extension kliner coating material, adopts coating to strengthen and hangs kliner coating performance, overcomes the shortcoming that magnesia-hercynite brick uses initial stage extension kliner coating difficulty, kliner coating unstable.The present invention is simple, and the prices of raw and semifnished materials used are cheap, hangs kliner coating performance and improves significantly, facilitate the development process of cement rotary kiln Trend of Chrome-free effectively.
Embodiment
Embodiment 1
A coating for kliner coating performance hung by refinforced cement rotary kiln clinkering zone, its chemical composition and weight percent composed as follows:
The coating that kliner coating performance hung by described a kind of refinforced cement rotary kiln clinkering zone is the slurry that material is evenly distributed, and after this slurry is fully mixed in stirrer by above-mentioned powder material, the normal temperature tap water mediation stirring adding powder material gross weight 20% forms.
An application for the coating of kliner coating performance hung by refinforced cement rotary kiln clinkering zone, and the step of its application method is as follows:
A. the floating dust on the cement rotary kiln magnesia-hercynite brick surface laid and impurity are cleaned out;
B. get refinforced cement rotary kiln clinkering zone and hang the coating even application of kliner coating performance on magnesia-hercynite brick surface, forming thickness is the coating of 1.5-2mm, and temperature during spraying in kiln controls at 15 DEG C-50 DEG C;
C. leave standstill 5-8 hour after spraying, make coating seasoning.
Embodiment 2
A coating for kliner coating performance hung by refinforced cement rotary kiln clinkering zone, its chemical composition and weight percent composed as follows:
The coating that kliner coating performance hung by described a kind of refinforced cement rotary kiln clinkering zone is the slurry that material is evenly distributed, and after this slurry is fully mixed in stirrer by above-mentioned powder material, the normal temperature tap water mediation stirring adding powder material gross weight 25% forms.
An application for the coating of kliner coating performance hung by refinforced cement rotary kiln clinkering zone, and the step of its application method is as follows:
A. the floating dust on the cement rotary kiln clinkering zone magnesia-hercynite brick surface laid and impurity are cleaned out;
B. get refinforced cement rotary kiln clinkering zone and hang the coating even application of kliner coating performance on magnesia-hercynite brick surface, forming thickness is the coating of 1.5-2mm, and temperature during spraying in kiln controls at 15 DEG C-50 DEG C;
C. leave standstill 5-8 hour after sprayed coating, make coating seasoning.
Embodiment 3
A coating for kliner coating performance hung by refinforced cement rotary kiln clinkering zone, its chemical composition and weight percent composed as follows:
The coating that kliner coating performance hung by described a kind of refinforced cement rotary kiln clinkering zone is the slurry that material is evenly distributed, and after this slurry is fully mixed in stirrer by above-mentioned powder material, the normal temperature tap water mediation stirring adding powder material gross weight 30% forms.
An application for the coating of kliner coating performance hung by refinforced cement rotary kiln clinkering zone, and the step of its application method is as follows:
A. in production plant by clean for cooled for kiln discharge magnesia-hercynite brick removing surface;
B. get refinforced cement rotary kiln clinkering zone and hang the coating even application of kliner coating performance on the surface of magnesia-hercynite brick, the thickness 1-1.5mm of coating, during spraying, magnesia-hercynite brick surface temperature is at 20 DEG C-40 DEG C;
C. leave standstill 5-8 hour after sprayed coating, make coating seasoning;
D., after the magnesia-hercynite brick having sprayed coating being piled up packaging, be transported to cement mill and be directly used in masonry cement rotary kiln clinkering zone.
The coating testing method that kliner coating performance hung by a kind of refinforced cement rotary kiln clinkering zone provided by the invention is as follows:
Produce the magnesia-hercynite brick sample of 4 pieces of identical materials, on 3 samples, coat the coating that in by the present invention, embodiment 1,2,3 proportioning is formulated respectively, and place 8 ~ 12 hours under 20 DEG C ~ 25 DEG C room temperature conditions; Will after 1000 DEG C × 2h pre-burning cement slurry, take glycerol as bonding agent, under 100MPa pressure, be pressed into 4 sample blocks of diameter 50mm thickness 20mm; Respectively 4 cement slurry sample blocks are placed on 4 ferro-magnesium-aluminum spinelle specimen surfaces, and perform mark; Be positioned over by sample after mark 1500 DEG C of calcinings 3 hours in high-temperature electric resistance furnace, after naturally cooling, the cohesive strength characterization result of cement clinker and ferro-magnesium-aluminum spinelle specimen surface is in table 1.
Table 1 the present invention prepares the brick body of coating and hangs kliner coating the performance test results without lining brick body
| Contrast content | Hang kliner coating performance |
| The embodiment of the present invention 1 | +++++++ |
| The embodiment of the present invention 2 | ++++ |
| The embodiment of the present invention 3 | ++++++ |
| Without lining brick body | + |
Illustrate: because do not evaluate the standard method that kliner coating performance hung by refractory materials at present, after this schematic data adopts adhesion test, cement and brick surface attachment state, in table, "+" represents the cohesive strength of cement block and brick body, and more multilist bright extension kliner coating performance is better.
Illustrate from above experimental data, with compared with coating magnesia-hercynite brick, the present invention manufactures coating on magnesia-hercynite brick surface effectively can improve its extension kliner coating performance.
Claims (4)
1. a coating for kliner coating performance hung by refinforced cement rotary kiln clinkering zone, it is characterized in that the chemical composition of this coating and weight percent content as follows:
The coating that kliner coating performance hung by described a kind of refinforced cement rotary kiln clinkering zone is the slurry that material is evenly distributed, and after this slurry is fully mixed in stirrer by above-mentioned powder material, the normal temperature pure water mediation stirring adding powder material gross weight 20-30% forms.
2. the coating of kliner coating performance hung by a kind of refinforced cement rotary kiln clinkering zone according to claim 1, and it is characterized in that the granularity of said industrial alumina powder is less than 0.074mm, Al
2o
3weight percent content>=99%; The granularity of brown iron oxide is less than 0.088mm, Fe
2o
3weight percent content>=95%; Portland cement clinker Powder Particle Size is less than 0.044mm, and CaO weight percent content is 35-40%; Sodium hexametaphosphate 99 granularity is less than 0.25mm, P
2o
5weight percent content>=68%.
3. an application for the coating of kliner coating performance hung by refinforced cement rotary kiln clinkering zone, it is characterized in that the step of this application is as follows:
A. by clean for the cement rotary kiln clinkering zone magnesia-hercynite brick removing surface laid;
B. get refinforced cement rotary kiln clinkering zone and hang the coating even application of kliner coating performance on cement kiln working lining surface, form the coating of thickness at 1.5-2mm, temperature during spraying in kiln controls at 15 DEG C-50 DEG C;
C. working lining brick leaves standstill 5-8 hour after sprayed coating, makes coating seasoning.
4. the application of the coating of kliner coating performance hung by a kind of refinforced cement rotary kiln clinkering zone according to claim 3, it is characterized in that the step of this application is as follows:
A. by clean for the magnesia-hercynite brick removing surface cooled after kiln discharge;
B. get refinforced cement rotary kiln clinkering zone and hang the coating even application of kliner coating performance on the surface of magnesia-hercynite brick, form the coating of thickness 1-1.5mm, during spraying, the surface temperature of brick is at 20 DEG C-40 DEG C;
C. the magnesia-hercynite brick after sprayed coating leaves standstill 5-8 hour, makes coating seasoning;
D., after the magnesia-hercynite brick of coating being piled up packaging, cement mill is transported to for masonry cement kiln clinkering zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667735.XA CN104446541B (en) | 2014-11-19 | 2014-11-19 | A kind of cement rotary kiln clinkering zone that strengthens hangs coating and the application thereof of kliner coating performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667735.XA CN104446541B (en) | 2014-11-19 | 2014-11-19 | A kind of cement rotary kiln clinkering zone that strengthens hangs coating and the application thereof of kliner coating performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104446541A true CN104446541A (en) | 2015-03-25 |
| CN104446541B CN104446541B (en) | 2016-07-06 |
Family
ID=52893387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410667735.XA Expired - Fee Related CN104446541B (en) | 2014-11-19 | 2014-11-19 | A kind of cement rotary kiln clinkering zone that strengthens hangs coating and the application thereof of kliner coating performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104446541B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104844231A (en) * | 2015-04-29 | 2015-08-19 | 李忠阁 | Accretion-preventing coating of rotary kiln |
| CN108180757A (en) * | 2017-12-14 | 2018-06-19 | 黄骅新智环保技术有限公司 | A kind of dangerous waste enterprise rotary kiln hangs kliner coating and preparation method thereof |
| CN108191404A (en) * | 2017-12-21 | 2018-06-22 | 江苏诺明高温材料股份有限公司 | A kind of ferro-silicon nitride-periclase-magnesium aluminate spinel compoud and preparation method |
| CN113121250A (en) * | 2021-05-08 | 2021-07-16 | 丁威 | Preparation method of nano coating laminar flow steel brick |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815951A (en) * | 2012-07-27 | 2012-12-12 | 中国铝业股份有限公司 | Flame-resistant corrosion-resistant coating |
| CN103848618A (en) * | 2014-01-14 | 2014-06-11 | 辽宁科技大学 | Synthetic hercynite and production method thereof |
-
2014
- 2014-11-19 CN CN201410667735.XA patent/CN104446541B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815951A (en) * | 2012-07-27 | 2012-12-12 | 中国铝业股份有限公司 | Flame-resistant corrosion-resistant coating |
| CN103848618A (en) * | 2014-01-14 | 2014-06-11 | 辽宁科技大学 | Synthetic hercynite and production method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104844231A (en) * | 2015-04-29 | 2015-08-19 | 李忠阁 | Accretion-preventing coating of rotary kiln |
| CN104844231B (en) * | 2015-04-29 | 2017-08-25 | 李忠阁 | The anti-ring formation coating of rotary kiln |
| CN108180757A (en) * | 2017-12-14 | 2018-06-19 | 黄骅新智环保技术有限公司 | A kind of dangerous waste enterprise rotary kiln hangs kliner coating and preparation method thereof |
| CN108191404A (en) * | 2017-12-21 | 2018-06-22 | 江苏诺明高温材料股份有限公司 | A kind of ferro-silicon nitride-periclase-magnesium aluminate spinel compoud and preparation method |
| CN113121250A (en) * | 2021-05-08 | 2021-07-16 | 丁威 | Preparation method of nano coating laminar flow steel brick |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104446541B (en) | 2016-07-06 |
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Granted publication date: 20160706 |