CN101215181A - High-chromium fire-resistant slurry - Google Patents
High-chromium fire-resistant slurry Download PDFInfo
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- CN101215181A CN101215181A CNA2008100490363A CN200810049036A CN101215181A CN 101215181 A CN101215181 A CN 101215181A CN A2008100490363 A CNA2008100490363 A CN A2008100490363A CN 200810049036 A CN200810049036 A CN 200810049036A CN 101215181 A CN101215181 A CN 101215181A
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- mud pump
- resistant slurry
- refractory mortar
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Abstract
The invention belongs to the field of refractory material, particularly to high chrome fireproof mud pump. The content of Cr2O3 in the mud pump is larger or equal than 80% by weight, which is the jointing material of masonry of Texaco gasification furnace, the weight percentage of Al2O3 in the mud pump is 2-10%, and the components of Cr2O3 are composed of chromium hemitrioxide green and electric melting chrome oxide and anchoring agent takes 5-15% in the total weight of the fireproof mud pump material. The high chrome fireproof mud pump of the invention sufficiently and uniformly mixes the prepared row materials, and then adds into the mud pump mixer before site production and adds water to stir to the needed density (320-380) of production to be used. Compared with the prior art, the invention has the advantages of small quantity of adding water, medium binding time, high binding strength after drying and sintering, good property in high temperature and the like, which can match well with the high chrome brick and increase the whole lifetime of the Texaco gasification furnace.
Description
Technical field
The invention belongs to fire resisting material field, relate generally to a kind of high-chromium fire-resistant slurry, is the important component part of coal gasification apparatus with refractory materials.
Background technology
Along with constantly riseing of International Crude Oil, utilize cheap relatively coal to produce the coal water slurry gasification technology of ethene, methyl alcohol, synthetic ammonia, generating, coal is fully used, help environmental protection again, have extensive market prospects.Texaco (Texaco) coal water slurry pressurized gasifier is at present domestic coal gasification apparatus the most commonly used.Having the rodent high chrome refractory of good anti-cinder is the crucial inner lining material of Texaco gasifier.
About common about 1500 ℃ of Texaco gasifier working temperature, stove internal gas pressure 5MPa, strongly reducing atmosphere, liquid acid slag, the temperature when high speed of simultaneous gas, liquid, solid body is washed away with the start-stop car and the fluctuation of air pressure, these severe condition have proposed high requirement to refractory materials.High chrome refractory has good acid resistance cinder aggressiveness, mainly is made up of high-chrome brick and high-chromium fire-resistant slurry as the texaco gasification inner lining of furnace.High-chromium fire-resistant slurry is meant that principal constituent is Cr
2O
3(general Cr
2O
3The refractory mortar of content 〉=80wt%).
The beginning of the nineties in last century, China begins to introduce Texaco gasifier, used at that time refractory materials relies on import fully, thereafter China has developed the Texaco gasifier inner lining refractory voluntarily in the period of several, the homemade goods performance is more excellent than imported product at present, the vapourizing furnace life-span has been had rise appreciably.But, be used to build by laying bricks or stones the refractory mortar of liner, imported product no matter, still existing homemade goods, have all that amount of water is big, tack time is long, oven dry and to burn back intensity low even do not have a problem such as intensity, brickwork joint ftractures easily, is washed away, peels off in actual use, makes brickwork joint become the position that is subject to erosion damage in the whole liner most, has had a strong impact on the bulk life time of Texaco gasifier.
Summary of the invention
The objective of the invention is to make the high-chromium fire-resistant slurry that a kind of amount of water is low, workability is good, cohesive strength is high, this refractory mortar is as the joint filler of building high-chrome brick by laying bricks or stones, can with the high-chrome brick matched well, improve the bulk life time of Texaco gasifier.
High-chromium fire-resistant slurry proposed by the invention, Cr in this mud
2O
3Content 〉=80wt% is the joint filler of building Texaco gasifier by laying bricks or stones; Al in this mud
2O
3Mass percent is 2～10%, Cr
2O
3Composition is made of chromoxide green, electric smelting chromic oxide, and wedding agent accounts for 5～15% of refractory mortar total mass.
Described Al
2O
3Be the α-Al of granularity less than 45 μ m
2O
3Fine powder, granularity are less than a kind of among both of the activated alumina micro mist of 1 μ m or the combination of the two;
Described chromoxide green granularity accounts for 25～40% of refractory mortar total mass less than 76 μ m;
Described electric smelting chromic oxide is made of less than the fine powder of 63 μ m and the granularity meal less than 280 μ m granularity, wherein, granularity accounts for 20～30% of refractory mortar total mass less than the fine powder of 63 μ m, and granularity accounts for 15～30% of refractory mortar total mass less than the meal of 280 μ m;
Described wedding agent is to be combined by in phosphoric acid salt and sulfonated lignin or the Mierocrystalline cellulose any.
High-chromium fire-resistant slurry of the present invention is that the above-mentioned raw material thorough mixing that has prepared is even, adds before the construction in the slurry mixer at the scene, adds the water modulation and is stirred to the required denseness of construction (320～380) and can uses.Compared with prior art, the present invention have that amount of water is little, tack time is moderate, oven dry and burn characteristics such as back cohesive strength height, high-temperature behavior are good.
Embodiment
Embodiment 1: prepare refractory mortar by the mass percent proportioning: granularity is less than α-Al of 45 μ m
2O
3Fine powder 2%, granularity is less than the activated alumina micro mist 2% of 1 μ m, and granularity is less than 76 μ m chromoxide greens 28%, electric smelting chromic oxide (＜63 μ m) 28%, electric smelting chromic oxide (＜280 μ m) 30%, wedding agent are 8% aluminium dihydrogen phosphate and 2% calcium lignin sulphonate.
Embodiment 2: prepare refractory mortar by the mass percent proportioning: granularity is less than the activated alumina micro mist 4% of 1 μ m, granularity is less than 76 μ m chromoxide greens 40%, electric smelting chromic oxide (＜63 μ m) 30%, electric smelting chromic oxide (＜280 μ m) 15%, wedding agent are 10% aluminium dihydrogen phosphate and 1% ammonium lignosulphonate.
Embodiment 3: prepare refractory mortar by the mass percent proportioning: granularity is less than the activated alumina micro mist 5% of 1 μ m, granularity is less than 76 μ m chromoxide greens 40%, electric smelting chromic oxide (＜63 μ m) 20%, electric smelting chromic oxide (＜280 μ m) 20%, wedding agent are 14% aluminium dihydrogen phosphate and 1% sodium lignosulfonate.
Embodiment 4: prepare refractory mortar by the mass percent proportioning: granularity is less than α-Al of 45 μ m
2O
3Fine powder 3%, granularity is less than the activated alumina micro mist 4% of 1 μ m, and granularity is less than 76 μ m chromoxide greens 35%, electric smelting chromic oxide (＜63 μ m) 25%, electric smelting chromic oxide (＜280 μ m) 21%, wedding agent are 10% aluminium dihydrogen phosphate and 2% methylcellulose gum.
Embodiment 5: prepare refractory mortar by the mass percent proportioning: granularity is less than α-Al of 45 μ m
2O
3Fine powder 3%, granularity is less than the activated alumina micro mist 2% of 1 μ m, and granularity is less than 76 μ m chromoxide greens 28%, electric smelting chromic oxide (＜63 μ m) 28%, electric smelting chromic oxide (＜280 μ m) 28%, wedding agent are 10% aluminium dihydrogen phosphate and 1% carboxymethyl cellulose.
Embodiment 6: prepare refractory mortar by the mass percent proportioning: granularity is less than α-Al of 45 μ m
2O
3Fine powder 6%, granularity be less than the activated alumina micro mist 4% of 1 μ m, and granularity is less than 76 μ m chromoxide greens 25%, and electric smelting chromic oxide (＜63 μ m) 30%, electric smelting chromic oxide (＜280 μ m) 30%, wedding agent are 4% aluminum phosphate chromium and 1% carboxyethyl cellulose.
Embodiment 7: prepare refractory mortar by the mass percent proportioning: granularity is less than the activated alumina micro mist 2% of 1 μ m, granularity is less than 76 μ m chromoxide greens 32%, electric smelting chromic oxide (＜63 μ m) 30%, electric smelting chromic oxide (＜280 μ m) 25%, wedding agent are 10% aluminum phosphate and 1% carboxymethyl cellulose.
Each refractory mortar amount of water of embodiment 1-7 gained is 15～20% of a powder quality, tack time 1～3min, the 110 ℃ of anti-folding of cold conditions cohesive strength 〉=5.0MPa, the 1400 ℃ of anti-folding of cold conditions cohesive strength 〉=3.0MPa, refractoriness under load [0.2MPa * 2.0%]＞1500 ℃, workability is good.
Claims (5)
1. high-chromium fire-resistant slurry, Cr in the mud
2O
3Content 〉=80wt% is the joint filler of building Texaco gasifier by laying bricks or stones; It is characterized in that: Al in this mud
2O
3Mass percent is 2～10%, Cr
2O
3Composition is made of chromoxide green, electric smelting chromic oxide, and wedding agent accounts for 5～15% of refractory mortar raw material total mass.
2. high-chromium fire-resistant slurry according to claim 1 is characterized in that: Al
2O
3Be the α-Al of granularity less than 45 μ m
2O
3Fine powder, granularity are less than a kind of among both of the activated alumina micro mist of 1 μ m or the combination of the two.
3. high-chromium fire-resistant slurry according to claim 1 is characterized in that: the chromoxide green granularity accounts for 25～40% of refractory mortar raw material total mass less than 76 μ m.
4. high-chromium fire-resistant slurry according to claim 1, it is characterized in that: electric smelting chromic oxide is made of less than the fine powder of 63 μ m and the granularity meal less than 280 μ m granularity, wherein, granularity accounts for 20～30% of refractory mortar raw material total mass less than the fine powder of 63 μ m, and granularity accounts for 15～30% of refractory mortar raw material total mass less than the meal of 280 μ m.
5. high-chromium fire-resistant slurry according to claim 1 is characterized in that: wedding agent is to be combined by in phosphoric acid salt and sulfonated lignin or the Mierocrystalline cellulose any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100490363A CN101215181B (en) | 2008-01-09 | 2008-01-09 | High-chromium fire-resistant slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100490363A CN101215181B (en) | 2008-01-09 | 2008-01-09 | High-chromium fire-resistant slurry |
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| Publication Number | Publication Date |
|---|---|
| CN101215181A true CN101215181A (en) | 2008-07-09 |
| CN101215181B CN101215181B (en) | 2010-04-07 |
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ID=39621701
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|---|---|---|---|
| CN2008100490363A Active CN101215181B (en) | 2008-01-09 | 2008-01-09 | High-chromium fire-resistant slurry |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079652A (en) * | 2010-11-22 | 2011-06-01 | 武汉科技大学 | High thermal shock resisting Cr2O3-Al2O3-ZrO2 brick and production method thereof |
| CN101648812B (en) * | 2009-09-02 | 2012-05-23 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of high-chrome brick |
| CN102617168A (en) * | 2012-04-01 | 2012-08-01 | 濮阳濮耐高温材料（集团）股份有限公司 | Wet process refractory mortar |
| CN109320120A (en) * | 2018-10-31 | 2019-02-12 | 嘉华特种水泥股份有限公司 | A kind of oil-well cement extra material for high temperature well cementation |
| CN114163223A (en) * | 2022-01-11 | 2022-03-11 | 洛阳利尔功能材料有限公司 | High-chromium repairing material for gasification furnace and preparation method thereof |
| CN114195492A (en) * | 2022-01-11 | 2022-03-18 | 洛阳利尔功能材料有限公司 | Preparation method of anchoring type high-strength plug brick for coal water slurry gasification furnace |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074202A (en) * | 1992-09-29 | 1993-07-14 | 洛阳耐火材料厂 | Magnesite refractory slurry |
| CN1417158A (en) * | 2001-11-06 | 2003-05-14 | 武汉威林炉衬材料有限责任公司 | Seam material |
-
2008
- 2008-01-09 CN CN2008100490363A patent/CN101215181B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648812B (en) * | 2009-09-02 | 2012-05-23 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of high-chrome brick |
| CN102079652A (en) * | 2010-11-22 | 2011-06-01 | 武汉科技大学 | High thermal shock resisting Cr2O3-Al2O3-ZrO2 brick and production method thereof |
| CN102079652B (en) * | 2010-11-22 | 2013-03-06 | 武汉科技大学 | High thermal shock resisting Cr2O3-Al2O3-ZrO2 brick and production method thereof |
| CN102617168A (en) * | 2012-04-01 | 2012-08-01 | 濮阳濮耐高温材料（集团）股份有限公司 | Wet process refractory mortar |
| CN109320120A (en) * | 2018-10-31 | 2019-02-12 | 嘉华特种水泥股份有限公司 | A kind of oil-well cement extra material for high temperature well cementation |
| CN109320120B (en) * | 2018-10-31 | 2021-04-02 | 嘉华特种水泥股份有限公司 | Oil well cement admixture for high-temperature well cementation |
| CN114163223A (en) * | 2022-01-11 | 2022-03-11 | 洛阳利尔功能材料有限公司 | High-chromium repairing material for gasification furnace and preparation method thereof |
| CN114195492A (en) * | 2022-01-11 | 2022-03-18 | 洛阳利尔功能材料有限公司 | Preparation method of anchoring type high-strength plug brick for coal water slurry gasification furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101215181B (en) | 2010-04-07 |
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Owner name: SINOSTEEL CORPORATION LUOYANG INSTITUTE OF REFRACT Free format text: FORMER NAME: SINOSTEEL CORPORATION LUOYANG INSTITUTE OF REFRACTORIES RESEARCH |
|
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Address after: 471039 Xiyuan Road, Jianxi District, Henan, No. 43, No. Patentee after: Luoyang Refractory Institute Co., Ltd., SINO Steel Corporation Address before: 471039 Xiyuan Road, Jianxi District, Henan, No. 43, No. Patentee before: Luoyang Refractory Materials Inst, Zhonggang Group |