CN104926320A - CFB boiler anti-corrosion wear-resistant refractory pouring material and preparation method thereof - Google Patents
CFB boiler anti-corrosion wear-resistant refractory pouring material and preparation method thereof Download PDFInfo
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- CN104926320A CN104926320A CN201410099610.1A CN201410099610A CN104926320A CN 104926320 A CN104926320 A CN 104926320A CN 201410099610 A CN201410099610 A CN 201410099610A CN 104926320 A CN104926320 A CN 104926320A
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Abstract
The invention discloses a CFB boiler anti-corrosion wear-resistant refractory pouring material and a preparation method thereof; the used technical scheme comprises that the preparation method comprises the steps: mixing 70 wt%-85 wt% of white corundum, 6 wt%-12 wt% of a aluminum oxide micro-powder, 5 wt%-10 wt% of spinel and 2 wt%-8 wt% of cement as raw materials, additionally adding raw materials of 0.05 wt%-0.5 wt% of a water reducing agent, 0.1 wt%-0.5 wt% of a silicon micro-powder and 0.1 wt%-1.0 wt% of an anti-explosion fiber, mixing evenly, then additionally adding raw material of 4 wt%-8 wt% of water, pouring and molding, and thus obtaining the anti-corrosion wear-resistant refractory pouring material. The prepared CFB boiler anti-corrosion wear-resistant refractory pouring material has good corrosion resistance, good wear resistance, good thermal shock stability, and high compression strength.
Description
Technical field
The invention belongs to indefinite form technical field of refractory castable, be specifically related to a kind of CFB boiler anti-erosion
Abrasion-proof and refractory pouring material and preparation method thereof.
Background technology
At present, because CFB boiler combustion adopts low grade coal, coal gangue ratio is large, cause the position serious wear such as water wall, coal dropping port, cyclonic separator, abrasionproof beam, simultaneously high-temperature gas to the erosion of working lining, wash away, the factors such as anxious blowing out are had higher requirement to the resistance to fouling of refractory materials, wear resistance and thermal shock resistance.The raw material compositions such as high grade bauxite, high-alumina fly, flint clay, bonding agent mainly selected by existing CFB boiler refractory castable.Although this kind of refractory castable production cost is lower, anti-erosion row can be poor, wear resistance and thermal shock resistance bad, compressive strength is on the low side, cannot meet CFB boiler maximize, continuous prodution requirement.
Summary of the invention
The present invention is intended to the weak point overcoming prior art existence, provides a kind of erosion-resisting characteristics excellent, wear resistance and good thermal shock stability, CFB boiler anti-erosion abrasion-proof and refractory pouring material that compressive strength is high and preparation method thereof.
The present invention mainly adopts following technical scheme:
A kind of preparation method of CFB boiler anti-erosion abrasion-proof and refractory pouring material, it is characterized in that: be first raw material mixing by the cement of the white fused alumina of 70wt%-85wt%, 6wt%-12wt% alumina powder, 5wt%-10wt% spinel and 2wt%-8wt%, the explosion-proof fiber of the additional described water reducer of raw material 0.05wt%-0.5wt%, the silicon powder of 0.1wt%-0.5wt% and 0.1wt%-1.0wt%, at the water of additional described raw material 4wt%-8wt% after mixing, build shaping, obtain anti-erosion abrasion-proof and refractory pouring material.
The white fused alumina 5wt%-8wt% of white fused alumina by white fused alumina 10wt%-12wt%, 0.074mm-0.044mm of white fused alumina 10wt%-12wt%, 0.15mm-0.074mm of white fused alumina 25wt%-27wt%, 1mm-0.15mm of white fused alumina 15wt%-18wt%, 3mm-1mm of following size composition: 5mm-3mm of described 60wt%-85wt%, the white fused alumina 5wt %-8wt% of below 0.044mm.
Described spinel granularity is 1mm-0.15mm.
Described cement is the one in 71 cement or luminite cement.
Described water reducer is the one in ADS or ADW.
Silicon-dioxide quality percentage composition >=92% in described silicon powder.
Owing to adopting as above technical scheme, the present invention compared with prior art beneficial effect is: the CFB boiler anti-erosion abrasion-proof and refractory pouring material erosion-resisting characteristics obtained by the present invention is excellent, and wear resistance and good thermal shock stability, compressive strength is high.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1
A kind of preparation method of CFB boiler anti-erosion abrasion-proof and refractory pouring material, it is characterized in that: first by the white fused alumina 15wt% of 5mm-3mm, the white fused alumina 25wt% of 3mm-1mm, 1mm-0.15mm white fused alumina 10wt%, the white fused alumina 10wt% of 0.15mm-0.074mm, the white fused alumina 5wt% of 0.074mm-0.044mm, the white fused alumina 5wt% of below 0.044mm, alumina powder 12wt%, the spinel 10wt% of 1mm-0.15mm and luminite cement 8wt% is raw material mixing, the ADS of additional described raw material 0.05wt%, 92 silicon powders of 0.5wt% and the explosion-proof fiber of 0.1wt%, at the water of additional described raw material 8wt% after mixing, build shaping, obtain anti-erosion abrasion-proof and refractory pouring material.
The volume density of the CFB boiler anti-erosion abrasion-proof and refractory pouring material obtained by the present embodiment 1 is 2.70 g/cm
3-2.73g/cm
3, compressive strength (110 DEG C of X24h) 92MPa, (1100 DEG C of X3h) 108MPa, wear resistance 5CC, heat symptom-complex stability (1100 DEG C of water-cooleds) 25 times.
Embodiment 2
A kind of preparation method of CFB boiler anti-erosion abrasion-proof and refractory pouring material, it is characterized in that: first by the white fused alumina 18wt% of 5mm-3mm, the white fused alumina 27wt% of 3mm-1mm, 1mm-0.15mm white fused alumina 12wt%, the white fused alumina 12wt% of 0.15mm-0.074mm, the white fused alumina 8wt% of 0.074mm-0.044mm, the white fused alumina 8wt% of below 0.044mm, alumina powder 6wt%, 1mm-0.15mm spinel 5wt% and 71 cement 4wt% be raw material mixing, the ADW of additional described raw material 0.3wt%, 92 silicon powders of 0.1wt% and the explosion-proof fiber of 1wt%, at the water of additional described raw material 4wt% after mixing, build shaping, obtain anti-erosion abrasion-proof and refractory pouring material.
The volume density of the CFB boiler anti-erosion abrasion-proof and refractory pouring material obtained by the present embodiment 2 is 2.73g/cm
3-2.75g/cm
3, compressive strength (110 DEG C of X24h) 96MPa, (1100 DEG C of X3h) 116MPa, wear resistance 3CC, heat symptom-complex stability (1100 DEG C of water-cooleds) 25 times.
Embodiment 3
A kind of preparation method of CFB boiler anti-erosion abrasion-proof and refractory pouring material, it is characterized in that: first by the white fused alumina 15wt% of 5mm-3mm, the white fused alumina 25wt% of 3mm-1mm, 1mm-0.15mm white fused alumina 12wt%, the white fused alumina 10wt% of 0.15mm-0.074mm, the white fused alumina 8wt% of 0.074mm-0.044mm, the white fused alumina 5wt% of below 0.044mm, alumina powder 10wt%, the spinel 10wt% of 1mm-0.15mm and luminite cement 5wt% is raw material mixing, the ADW of additional described raw material 0.5wt%, 95 silicon powders of 0.1wt% and the explosion-proof fiber of 0.5wt%, at the water of additional described raw material 6wt% after mixing, build shaping, obtain anti-erosion abrasion-proof and refractory pouring material.
The volume density of the CFB boiler anti-erosion abrasion-proof and refractory pouring material obtained by the present embodiment 3 is 2.71g/cm
3-2.72g/cm
3, compressive strength (110 DEG C of X24h) 93MPa, (1100 DEG C of X3h) 105MPa, wear resistance 5CC, heat symptom-complex stability (1100 DEG C of water-cooleds) 25 times.
Embodiment 4
A kind of preparation method of CFB boiler anti-erosion abrasion-proof and refractory pouring material, it is characterized in that: first by the white fused alumina 18wt% of 5mm-3mm, the white fused alumina 27wt% of 3mm-1mm, 1mm-0.15mm white fused alumina 12wt%, the white fused alumina 10wt% of 0.15mm-0.074mm, the white fused alumina 8wt% of 0.074mm-0.044mm, the white fused alumina 5wt% of below 0.044mm, alumina powder 10wt%, 1mm-0.15mm spinel 8wt% and 71 cement 2wt% be raw material mixing, the ADS of additional described raw material 0.5wt%, 95 silicon powders of 0.5wt% and the explosion-proof fiber of 0.5wt%, at the water of additional described raw material 7wt% after mixing, build shaping, obtain anti-erosion abrasion-proof and refractory pouring material.
The volume density of the CFB boiler anti-erosion abrasion-proof and refractory pouring material obtained by the present embodiment 4 is 2.74g/cm
3-2.75g/cm
3, compressive strength (110 DEG C of X24h) 100MPa, (1100 DEG C of X3h) 115MPa, wear resistance 4CC, heat symptom-complex stability (1100 DEG C of water-cooleds) 25 times.
Embodiment 5
A kind of preparation method of CFB boiler anti-erosion abrasion-proof and refractory pouring material, it is characterized in that: first by the white fused alumina 18wt% of 5mm-3mm, the white fused alumina 27wt% of 3mm-1mm, 1mm-0.15mm white fused alumina 12wt%, the white fused alumina 10wt% of 0.15mm-0.074mm, the white fused alumina 8wt% of 0.074mm-0.044mm, the white fused alumina 5wt% of below 0.044mm, alumina powder 10wt%, the spinel 8wt% of 1mm-0.15mm and luminite cement 2wt% is raw material mixing, the ADW of additional described raw material 0.2wt%, 92 silicon powders of 0.2wt% and the explosion-proof fiber of 0.5wt%, at the water of additional described raw material 5wt% after mixing, build shaping, obtain anti-erosion abrasion-proof and refractory pouring material.
The volume density of the CFB boiler anti-erosion abrasion-proof and refractory pouring material obtained by the present embodiment 5 is 2.72g/cm
3-2.73g/cm
3, compressive strength (110 DEG C of X24h) 93MPa, (1100 DEG C of X3h) 110MPa, wear resistance 5CC, heat symptom-complex stability (1100 DEG C of water-cooleds) 25 times.
Claims (7)
1. the CFB boiler preparation method of anti-erosion abrasion-proof and refractory pouring material, it is characterized in that: be first raw material mixing by the cement of the white fused alumina of 70wt%-85wt%, 6wt%-12wt% alumina powder, 5wt%-10wt% spinel and 2wt%-8wt%, the explosion-proof fiber of the additional described water reducer of raw material 0.05wt%-0.5wt%, the silicon powder of 0.1wt%-0.5wt% and 0.1wt%-1.0wt%, at the water of additional described raw material 4wt%-8wt% after mixing, build shaping, obtain anti-erosion abrasion-proof and refractory pouring material.
2. the preparation method of a kind of CFB boiler anti-erosion abrasion-proof and refractory pouring material according to claim 1, is characterized in that: the white fused alumina 5wt%-8wt% of white fused alumina by white fused alumina 10wt%-12wt%, 0.074mm-0.044mm of white fused alumina 10wt%-12wt%, 0.15mm-0.074mm of white fused alumina 25wt%-27wt%, 1mm-0.15mm of white fused alumina 15wt%-18wt%, 3mm-1mm of following size composition: 5mm-3mm of described 70wt%-85wt%, the white fused alumina 5wt %-8wt% of below 0.044mm.
3. the preparation method of a kind of CFB boiler anti-erosion abrasion-proof and refractory pouring material according to claim 1, is characterized in that: described spinel granularity is 1mm-0.15mm.
4. the preparation method of a kind of CFB boiler anti-erosion abrasion-proof and refractory pouring material according to claim 1, is characterized in that: described cement is the one in 71 cement or luminite cement.
5. the preparation method of a kind of CFB boiler anti-erosion abrasion-proof and refractory pouring material according to claim 1, is characterized in that: described water reducer is the one in ADS or ADW.
6. the preparation method of a kind of CFB boiler anti-erosion abrasion-proof and refractory pouring material according to claim 1, is characterized in that: silicon-dioxide quality percentage composition >=92% in described silicon powder.
7. the preparation method of a kind of CFB boiler anti-erosion abrasion-proof and refractory pouring material according to any one of claim 1-7 prepares CFB boiler anti-erosion abrasion-proof and refractory pouring material.
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| CN201410099610.1A CN104926320A (en) | 2014-03-18 | 2014-03-18 | CFB boiler anti-corrosion wear-resistant refractory pouring material and preparation method thereof |
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| CN201410099610.1A CN104926320A (en) | 2014-03-18 | 2014-03-18 | CFB boiler anti-corrosion wear-resistant refractory pouring material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396710A (en) * | 2016-09-14 | 2017-02-15 | 武汉科技大学 | Erosion-resistant castable for steel ladle and use method of erosion-resistant castable |
| CN107352981A (en) * | 2017-07-12 | 2017-11-17 | 宜兴瑞泰耐火材料工程有限公司 | A kind of low heat conduction high-strength wear-resistant pouring material of CFB boiler material returning device corundum-mullite |
| CN113666757A (en) * | 2021-08-27 | 2021-11-19 | 宜兴市兴贝耐火保温工程有限公司 | High-strength refractory castable for CFB boiler ignition part and preparation method thereof |
-
2014
- 2014-03-18 CN CN201410099610.1A patent/CN104926320A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396710A (en) * | 2016-09-14 | 2017-02-15 | 武汉科技大学 | Erosion-resistant castable for steel ladle and use method of erosion-resistant castable |
| CN106396710B (en) * | 2016-09-14 | 2019-04-26 | 武汉科技大学 | A kind of ladle resistant to corrosion castable and its application method |
| CN107352981A (en) * | 2017-07-12 | 2017-11-17 | 宜兴瑞泰耐火材料工程有限公司 | A kind of low heat conduction high-strength wear-resistant pouring material of CFB boiler material returning device corundum-mullite |
| CN107352981B (en) * | 2017-07-12 | 2020-07-07 | 宜兴瑞泰耐火材料工程有限公司 | Corundum-mullite low-heat-conductivity high-strength wear-resistant castable for CFB boiler feed back device |
| CN113666757A (en) * | 2021-08-27 | 2021-11-19 | 宜兴市兴贝耐火保温工程有限公司 | High-strength refractory castable for CFB boiler ignition part and preparation method thereof |
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Application publication date: 20150923 |