CN102603253A - Smoke-corrosion-resisting castable - Google Patents
Smoke-corrosion-resisting castable Download PDFInfo
- Publication number
- CN102603253A CN102603253A CN2012101006275A CN201210100627A CN102603253A CN 102603253 A CN102603253 A CN 102603253A CN 2012101006275 A CN2012101006275 A CN 2012101006275A CN 201210100627 A CN201210100627 A CN 201210100627A CN 102603253 A CN102603253 A CN 102603253A
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- CN
- China
- Prior art keywords
- parts
- corrosion
- flue gas
- weight part
- mould material
- 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
- 230000007797 corrosion Effects 0.000 claims abstract description 41
- 238000005260 corrosion Methods 0.000 claims abstract description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 150000004645 aluminates Chemical class 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 31
- 239000002994 raw material Substances 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000011863 silicon-based powder Substances 0.000 claims description 7
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 229910001868 water Inorganic materials 0.000 abstract description 15
- 239000000779 smoke Substances 0.000 abstract description 5
- 230000035939 shock Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 229910001415 sodium ion Inorganic materials 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 229910052573 porcelain Inorganic materials 0.000 abstract 4
- 239000006004 Quartz sand Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 229910052710 silicon Inorganic materials 0.000 abstract 2
- 239000010703 silicon Substances 0.000 abstract 2
- 229910001414 potassium ion Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 239000011819 refractory material Substances 0.000 description 9
- 239000003513 alkali Substances 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 238000010998 test method Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000013517 stratification Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a smoke-corrosion-resisting castable, comprising the following components in parts by weight: 60-80 parts of sanitary porcelain aggregates, 10-20 parts of aluminate cement, 1-4 parts of metakaolin, 2-6 parts of silicon micro-powders and 5-12 parts of quartz sand. According to the smoke-corrosion-resisting castable disclosed by the invention, the sanitary porcelain aggregates are recovered and reutilized, have the advantages of small absorption rate, thermal shock resistance, acidity resistance, chemical stability and the like, and are excellent sanitary porcelain aggregate source; the quartz sand matches the sanitary porcelain aggregates to improve acidity and alkaline resistance and smoke corrosion resistance of a castable, the CA-5-G6 aluminate cement and the metakaolin can adsorb potassium ions and sodium ions, water side corrosion is reduced, and the silicon micro-powders can improve the strength of the castable.
Description
Technical field
The present invention relates to a kind of mould material, particularly a kind of anti-flue gas corrosion mould material.
Background technology
Often have corrosion in the flue of boiler, smoke outlet, smoke box and the oil-burning gas-fired boiler passage; A kind of is the water of condensation corrosion; Another kind is a flue gas corrosion, when boiler low-temperature moves or during unsaturated operation, owing to the reason of the temperature difference can produce water of condensation; And then the corrosion boiler, have a strong impact on work-ing life of boiler.
During the fuel combustion of large coal-fired boiler, (α=1.10-1.15) generates SO under common excess air ratio during burning
2, 2% SO is wherein arranged
2Become through oxidation again and be SO
3SO in the high temperature
3Gas does not corrode boiler, but flue-gas temperature drops to below 400 ℃ SO
3Generate sulfuric acid gas with water vapour chemical combination, it condenses on the boiler surface, and the boiler low-temperature etching problem just takes place.Condense in the sulfuric acid on the boiler surface, the dust that adheres in the flue gas causes dust stratification, and dust stratification is not easy to remove very much; Flue is often stopped up by dust stratification; Flue gas is not smooth, also can accumulate in smoke outlet, smoke box and the oil-burning gas-fired boiler passage, has a strong impact on the work-ing life of boiler; For prolonged boiler work-ing life, must implement rational processing scheme.
Summary of the invention
To the deficiency that exists in the prior art, the object of the present invention is to provide a kind of anti-flue gas corrosion mould material, with thorough solution water of condensation corrosion and flue gas corrosion.
Technical scheme of the present invention is achieved in that anti-flue gas corrosion mould material; The weight part of sanitary china aggregate is 60-80 part; The weight part of aluminate cement is 10-20 part, and the weight part of metakaolin is 1-4 part, and the weight part of silicon powder is 2-6 part; The weight part of silica sand is 5-12 part, and surplus is an impurity.
Above-mentioned anti-flue gas corrosion mould material, the weight part of sanitary china aggregate is 70 parts, and the weight part of aluminate cement is 15 parts, and the weight part of metakaolin is 2 parts, and the weight part of silicon powder is 4 parts, and the weight part of silica sand is 9 parts, and surplus is an impurity.
Above-mentioned anti-flue gas corrosion mould material, said sanitary china aggregate is a snitaryware.
Above-mentioned anti-flue gas corrosion mould material, the granularity of said snitaryware is 0＜d≤15mm.
Above-mentioned anti-flue gas corrosion mould material, the model of said aluminate cement is CA-50-G6.
Above-mentioned anti-flue gas corrosion mould material, said metakaolin are to be raw material with kaolin, form through 720-800 ℃ of calcining dehydration in 10-12 hour.
The invention has the beneficial effects as follows: anti-flue gas corrosion mould material; Adopt snitaryware (referring to sanitary ware, like floor tile, wall brick, toilet, wash basin etc.) as the sanitary china aggregate, the aftertreatment present situation of the ceramic industry solid waste of China is very undesirable at present; For the most landfill methods that adopt of the processing of construction sanitary ceramic waste residue material; Not only taken a large amount of soils, the soil around also having polluted, water body, atmosphere etc. cause serious harm to ecotope; The enhancing of Along with people's environmental consciousness and the present situation of resource shortage; The present invention is recycled to the snitaryware waste material, and snitaryware has advantages such as specific absorption is little, heat-shock resistance, acid resistance, chemicalstability, is good sanitary china aggregate source.The present invention selects for use silica sand to cooperate snitaryware sanitary china aggregate to improve the resistance to acids and bases of mould material, and flue gas corrosion, CA-50-G6 aluminate cement and metakaolin can k adsorption ion and sodium ions, the minimizing aqueous corrosion.
Embodiment
Do further explanation in the face of the present invention down:
Embodiment 1
Anti-each proportioning raw materials of flue gas corrosion mould material of present embodiment is following: granularity is that the snitaryware of 0＜d≤15mm is 70kg; CA-50-G6 type aluminate cement is 15kg; Metakaolin is 2kg, is to be raw material with kaolin, forms through 730 ℃ of calcinings dehydration in 11 hours; Silicon powder is 4kg, and silica sand is 9kg.Above-mentioned raw materials is added the water stirring process anti-flue gas corrosion mould material concrete.
Detect refractory product knock test method (water quick cooling method) according to GB GB/T14983-2008 refractory materials alkali proof test method (molten alkali crucible method), the anti-sulfuric acid erosion test of GB/T17601-2008 refractory materials method, GB/T8931-2007 refractory material slag resistance TP (static crucible method), YB/T2202-1998 (2008) refractory castable crushing strength under high temperature TP and YB/T2206.2-1998, make following detection:
| Performance index | Detected value |
| Alkali-resistivity (%) | Sample does not have obvious visible crackle (one-level) |
| Anti-sulfuric acid corrodes (g) | ≤0.001 |
| Slag resistance (mm 2) | ≤0.001 |
| 1500 ℃ * 3h of compressive strength (MPa) | 65.6 |
| 110 ℃ of thermal shock resistances (number of times) | ≥55 |
Its detected result is higher than the performance index of other anti-flue gas corrosion mould material.Do not find that through the times use in 2 years mould material has water of condensation corrosion and flue gas corrosion phenomenon.
Embodiment 2
Anti-each proportioning raw materials of flue gas corrosion mould material of present embodiment is following: granularity is that the weight part of the snitaryware of 0＜d≤15mm is 80kg; The weight part of CA-50-G6 type aluminate cement is 10kg; Metakaolin is 1kg, is to be raw material with kaolin, forms through 720 ℃ of calcinings dehydration in 10 hours; The weight part of silicon powder is 2kg, and the weight part of silica sand is 12kg.Above-mentioned raw materials is added the water stirring process anti-flue gas corrosion mould material concrete.
Detect refractory product knock test method (water quick cooling method) according to GB GB/T14983-2008 refractory materials alkali proof test method (molten alkali crucible method), the anti-sulfuric acid erosion test of GB/T17601-2008 refractory materials method, GB/T8931-2007 refractory material slag resistance TP (static crucible method), YB/T2202-1998 (2008) refractory castable crushing strength under high temperature TP and YB/T2206.2-1998, make following detection:
| Performance index | Detected value |
| Alkali-resistivity (%) | Sample does not have obvious visible crackle (one-level) |
| Anti-sulfuric acid corrodes (g) | ≤0.001 |
| Slag resistance (mm 2) | ≤0.001 |
| 1500 ℃ * 3h of compressive strength (MPa) | 64.2 |
| 110 ℃ of thermal shock resistances (number of times) | ≥52 |
Its detected result is higher than the performance index of other anti-flue gas corrosion mould material.Do not find that through the time use of a year and a half mould material has water of condensation corrosion and flue gas corrosion phenomenon.
Embodiment 3
Anti-each proportioning raw materials of flue gas corrosion mould material of present embodiment is following: granularity is that the weight part of the snitaryware of 0＜d≤15mm is 60kg, and the weight part of CA-50-G6 type aluminate cement is 20kg; Metakaolin is that 4kg is to be raw material with kaolin, forms through 800 ℃ of calcinings dehydration in 12 hours; The weight part of silicon powder is 6kg, and the weight part of silica sand is 5kg.Above-mentioned raw materials is added the water stirring process anti-flue gas corrosion mould material concrete.
Detect refractory product knock test method (water quick cooling method) according to GB GB/T14983-2008 refractory materials alkali proof test method (molten alkali crucible method), the anti-sulfuric acid erosion test of GB/T17601-2008 refractory materials method, GB/T8931-2007 refractory material slag resistance TP (static crucible method), YB/T2202-1998 (2008) refractory castable crushing strength under high temperature TP and YB/T2206.2-1998, make following detection:
| Performance index | Detected value |
| Alkali-resistivity (%) | Sample does not have obvious visible crackle (one-level) |
| Anti-sulfuric acid corrodes (g) | ≤0.001 |
| Slag resistance (mm 2) | ≤0.001 |
| 1500 ℃ * 3h of compressive strength (MPa) | 64.8 |
| 110 ℃ of thermal shock resistances (number of times) | ≥51 |
Its detected result is higher than the performance index of other anti-flue gas corrosion mould material.Use does not find that mould material has water of condensation corrosion and flue gas corrosion phenomenon through year.
The foregoing description only be for explain clearly that the invention does for example, and be not qualification to the invention embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.Allly still be among the protection domain of the invention claim in any conspicuous variation of being extended out within spirit of the present invention and the principle or change.
Claims (6)
1. anti-flue gas corrosion mould material is characterized in that, the weight part of sanitary china aggregate is 60-80 part; The weight part of aluminate cement is 10-20 part, and the weight part of metakaolin is 1-4 part, and the weight part of silicon powder is 2-6 part; The weight part of silica sand is 5-12 part, and surplus is an impurity.
2. anti-flue gas corrosion mould material according to claim 1 is characterized in that the weight part of sanitary china aggregate is 70 parts; The weight part of aluminate cement is 15 parts, and the weight part of metakaolin is 2 parts, and the weight part of silicon powder is 4 parts; The weight part of silica sand is 9 parts, and surplus is an impurity.
3. anti-flue gas corrosion mould material according to claim 1 and 2 is characterized in that said sanitary china aggregate is a snitaryware.
4. anti-flue gas corrosion mould material according to claim 3 is characterized in that the granularity of said snitaryware is 0＜d≤15mm.
5. anti-flue gas corrosion mould material according to claim 1 and 2 is characterized in that the model of said aluminate cement is CA-50-G6.
6. anti-flue gas corrosion mould material according to claim 1 and 2 is characterized in that, said metakaolin is to be raw material with kaolin, forms through 720-800 ℃ of calcining dehydration in 10-12 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101006275A CN102603253B (en) | 2012-04-09 | 2012-04-09 | Smoke-corrosion-resisting castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101006275A CN102603253B (en) | 2012-04-09 | 2012-04-09 | Smoke-corrosion-resisting castable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102603253A true CN102603253A (en) | 2012-07-25 |
| CN102603253B CN102603253B (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101006275A Active CN102603253B (en) | 2012-04-09 | 2012-04-09 | Smoke-corrosion-resisting castable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102603253B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174977A (en) * | 2015-08-12 | 2015-12-23 | 长兴正豪耐火材料有限公司 | Acid and alkali resistant high-performance refractory castable using waste sanitary ware and preparation process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1269772A (en) * | 1997-09-08 | 2000-10-11 | 北美耐火材料公司 | Refractory system including reactive metakaolin additive |
| CN101337801A (en) * | 2008-08-12 | 2009-01-07 | 无锡远能耐火材料有限公司 | Wear resistant pouring material and method of preparing same |
-
2012
- 2012-04-09 CN CN2012101006275A patent/CN102603253B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1269772A (en) * | 1997-09-08 | 2000-10-11 | 北美耐火材料公司 | Refractory system including reactive metakaolin additive |
| CN101337801A (en) * | 2008-08-12 | 2009-01-07 | 无锡远能耐火材料有限公司 | Wear resistant pouring material and method of preparing same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174977A (en) * | 2015-08-12 | 2015-12-23 | 长兴正豪耐火材料有限公司 | Acid and alkali resistant high-performance refractory castable using waste sanitary ware and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102603253B (en) | 2013-10-09 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING YINGXIANG BORUI FIREPROOFING TECHNOLOGY CO Free format text: FORMER OWNER: PEI YINGXIANG Effective date: 20140416 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140416 Address after: 101109 Beijing city Tongzhou District Huoxian town Ma Wu Village 6 District No. 503 Patentee after: Beijing Yingxiang Borui Fireproofing Technology Co., Ltd. Address before: 101109 Beijing city Tongzhou District Huoxian town Ma Wu Village 6 District No. 503 Patentee before: Pei Yingxiang |