CN105669212A - High-temperature resistant and anti-corrosion castable for power station boilers - Google Patents
High-temperature resistant and anti-corrosion castable for power station boilers Download PDFInfo
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- CN105669212A CN105669212A CN201410664818.3A CN201410664818A CN105669212A CN 105669212 A CN105669212 A CN 105669212A CN 201410664818 A CN201410664818 A CN 201410664818A CN 105669212 A CN105669212 A CN 105669212A
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- chromium dioxide
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- temperature resistant
- castable
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Abstract
The present invention discloses a high-temperature resistant and anti-corrosion castable for power station boilers. The castable comprises the following components in weight percentages: 50-60% of chromium dioxide, 8-20% of white corundum powder, 5-15% of alumina powder, 10-15% of zircon powder, 1-1.5% of silica fume and 0.6-0.8% of sodium polyacrylate. The chromium dioxide has different particle sizes. The chromium dioxide with a particle size of 3-5 mm accounts for 20-25% of the total weight of the chromium dioxide, the chromium dioxide with a particle size of 1-3 mm accounts for 30-40%, the chromium dioxide with a particle size of 0-1 mm accounts for 25-35%, and the chromium dioxide micro powder accounts for 3-8%. According to the invention the chromium dioxide is used as a base material, and the castable is resistant to high temperature, is resistant to corrosion, and is high in chemical stability and especially suitable for lining refractory used in large-scale power station boiler. The chromium dioxide micro powder melts at a temperature above 1350 DEG C and can further improve the overall strength of the castable after molding.
Description
Technical field
The present invention relates to application to refractory field, it is specifically related to a kind of high temperature resistant station boiler mould material against corrosion.
Background technology
Large-sized station boiler volume is big, highly generally all reaching tens meters, mould material, except application refractory brick, also to be used in boiler inner wall and top when building brick, use after baking and curing after overall boiler inner wall is shaping, in boiler working process, due to the scaling loss of flame retardant coating, cycle replacing is heavily built, but often cause entirety heavily to be built due to the local scaling loss of flame retardant coating, causing the problem that cost increases, one is the local improper scaling loss of refractory brick, and another kind is due to the shaping flame retardant coating scaling loss of mould material.
Summary of the invention
Goal of the invention: the present invention seeks to provide a kind of high temperature resistant, anticorrosive mould material.
Technical scheme: station boiler mould material against corrosion that one of the present invention is high temperature resistant, comprise the component of following weight percent: chromium dioxide: 50-60%, white alundum powder: 8-20%, aluminum oxide powder: 5-15%, zirconium English powder: 10-15%, silica flour: 1-1.5%, sodium polyacrylate: 0.6-0.8%.
Preferably, described station boiler mould material a kind of high temperature resistant against corrosion, comprises the component of following weight percent: chromium dioxide: 50%, white alundum powder: 20%, aluminum oxide powder: 15%, zirconium English powder: 13%, silica flour: 1.2%, sodium polyacrylate 0.8%.
Preferably, described chromium dioxide is made up of different grain size, and granularity is that the chromium dioxide of 3-5mm accounts for the chromium dioxide that chromium dioxide total amount weight percent is 20-25%, 1-3mm and accounts for 30-40%, the chromium dioxide of 0-1mm accounts for 25-35%, and the micro-powder of chromium dioxide accounts for 3-8%.
Preferably, the micro-powder of described chromium dioxide is below 1200 orders.
Useful effect: the present invention take chromium dioxide as base-material, high temperature resistant, anti-erosion, chemical stability height, is particularly suitable for large-sized station boiler inner lining refractory, and the micro-powder of chromium dioxide more than 1350 DEG C with regard to melting, it is possible to improve further this mould material shaping after bulk strength.
Embodiment
Embodiment 1:
A kind of high temperature resistant station boiler mould material against corrosion, comprise the component of following weight percent: chromium dioxide: 60%, white alundum powder: 13%, aluminum oxide powder: 10%, zirconium English powder: 15%, silica flour: 1.3%, sodium polyacrylate: 0.7%, described chromium dioxide is made up of different grain size, granularity is that the chromium dioxide of 3-5mm accounts for the chromium dioxide that the chromium dioxide that chromium dioxide total amount weight percent is 25%, 1-3mm accounts for 40%, 0-1mm and accounts for 30%, the micro-powder of chromium dioxide accounts for 5%, and the micro-powder of described chromium dioxide is 1200 orders.
During use, above-mentioned raw materials is mixed, shaping, it is heating and curing, hardens further when first time burns stove.
Embodiment 2:
A kind of high temperature resistant station boiler mould material against corrosion, comprise the component of following weight percent: chromium dioxide: 50%, white alundum powder: 20%, aluminum oxide powder: 15%, zirconium English powder: 13%, silica flour: 1.2%, sodium polyacrylate 0.8%, described chromium dioxide is made up of different grain size, granularity is that the chromium dioxide of 3-5mm accounts for the chromium dioxide that the chromium dioxide that chromium dioxide total amount weight percent is 20%, 1-3mm accounts for 40%, 0-1mm and accounts for 35%, the micro-powder of chromium dioxide accounts for 5%, and the micro-powder of described chromium dioxide is 1200 orders.
During use, above-mentioned raw materials is mixed, shaping, it is heating and curing, hardens further when first time burns stove.
Embodiment 3:
A kind of high temperature resistant station boiler mould material against corrosion, comprise the component of following weight percent: chromium dioxide: 55%, white alundum powder: 18%, aluminum oxide powder: 13%, zirconium English powder: 12.4%, silica flour: 1%, sodium polyacrylate: 0.6%, described chromium dioxide is made up of different grain size, granularity is that the chromium dioxide of 3-5mm accounts for the chromium dioxide that the chromium dioxide that chromium dioxide total amount weight percent is 23%, 1-3mm accounts for 37%, 0-1mm and accounts for 32%, the micro-powder of chromium dioxide accounts for 8%, and the micro-powder of described chromium dioxide is 1500 orders.
During use, above-mentioned raw materials is mixed, shaping, it is heating and curing, hardens further when first time burns stove.
Embodiment 4:
A kind of high temperature resistant station boiler mould material against corrosion, comprise the component of following weight percent: chromium dioxide: 53%, white alundum powder: 18%, aluminum oxide powder: 12%, zirconium English powder: 15%, silica flour: 1.3%, sodium polyacrylate: 0.7%, described chromium dioxide is made up of different grain size, granularity is that the chromium dioxide of 3-5mm accounts for the chromium dioxide that the chromium dioxide that chromium dioxide total amount weight percent is 25%, 1-3mm accounts for 33%, 0-1mm and accounts for 35%, the micro-powder of chromium dioxide accounts for 7%, and the micro-powder of chromium dioxide is 1500 orders.
During use, above-mentioned raw materials is mixed, shaping, it is heating and curing, hardens further when first time burns stove.
Embodiment 5:
A kind of high temperature resistant station boiler mould material against corrosion, comprise the component of following weight percent: chromium dioxide: 59%, white alundum powder: 15%, aluminum oxide powder: 9%, zirconium English powder: 15%, silica flour: 1.2%, sodium polyacrylate: 0.8%, described chromium dioxide is made up of different grain size, granularity is that the chromium dioxide of 3-5mm accounts for the chromium dioxide that the chromium dioxide that chromium dioxide total amount weight percent is 21%, 1-3mm accounts for 39%, 0-1mm and accounts for 35%, the micro-powder of chromium dioxide accounts for 5%, and the micro-powder of chromium dioxide is 1200 orders.
During use, above-mentioned raw materials is mixed, shaping, it is heating and curing, hardens further when first time burns stove.
Claims (4)
1. a high temperature resistant station boiler mould material against corrosion, comprises the component of following weight percent: chromium dioxide: 50-60%, white alundum powder: 8-20%, aluminum oxide powder: 5-15%, zirconium English powder: 10-15%, silica flour: 1-1.5%, sodium polyacrylate: 0.6-0.8%.
2. a high temperature resistant station boiler mould material against corrosion according to claim 1, is characterized by: the component comprising following weight percent: chromium dioxide: 50%, white alundum powder: 20%, aluminum oxide powder: 15%, zirconium English powder: 13%, silica flour: 1.2%, sodium polyacrylate 0.8%.
3. a high temperature resistant station boiler mould material against corrosion according to claim 1 and 2, it is characterized by: described chromium dioxide is made up of different grain size, granularity is that to account for chromium dioxide total amount weight percent be 20-25% for the chromium dioxide of 3-5mm, the chromium dioxide of 1-3mm accounts for 30-40%, the chromium dioxide of 0-1mm accounts for 25-35%, and the micro-powder of chromium dioxide accounts for 3-8%.
4. a high temperature resistant station boiler mould material against corrosion according to claim 3, is characterized by: the micro-powder of described chromium dioxide is below 1200 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664818.3A CN105669212A (en) | 2014-11-19 | 2014-11-19 | High-temperature resistant and anti-corrosion castable for power station boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664818.3A CN105669212A (en) | 2014-11-19 | 2014-11-19 | High-temperature resistant and anti-corrosion castable for power station boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105669212A true CN105669212A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410664818.3A Pending CN105669212A (en) | 2014-11-19 | 2014-11-19 | High-temperature resistant and anti-corrosion castable for power station boilers |
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| CN (1) | CN105669212A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343187A (en) * | 2008-08-20 | 2009-01-14 | 宜兴市张泽工业炉材料厂 | High-temperature flame-proof pouring material and preparation method |
| CN101618969A (en) * | 2009-07-31 | 2010-01-06 | 北京科技大学 | Method for preparing compound lining material of blast furnace |
| CN101987793A (en) * | 2010-11-12 | 2011-03-23 | 安徽瑞泰新材料科技有限公司 | Anti-skinning pouring material for cement kiln |
| CN102701764A (en) * | 2012-06-08 | 2012-10-03 | 安徽瑞泰新材料科技有限公司 | Sintered alumina-silica refractory material and preparation method thereof |
-
2014
- 2014-11-19 CN CN201410664818.3A patent/CN105669212A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343187A (en) * | 2008-08-20 | 2009-01-14 | 宜兴市张泽工业炉材料厂 | High-temperature flame-proof pouring material and preparation method |
| CN101618969A (en) * | 2009-07-31 | 2010-01-06 | 北京科技大学 | Method for preparing compound lining material of blast furnace |
| CN101987793A (en) * | 2010-11-12 | 2011-03-23 | 安徽瑞泰新材料科技有限公司 | Anti-skinning pouring material for cement kiln |
| CN102701764A (en) * | 2012-06-08 | 2012-10-03 | 安徽瑞泰新材料科技有限公司 | Sintered alumina-silica refractory material and preparation method thereof |
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Application publication date: 20160615 |
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