CN1450024A - Refractory casting material - Google Patents
Refractory casting material Download PDFInfo
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- CN1450024A CN1450024A CN 03113433 CN03113433A CN1450024A CN 1450024 A CN1450024 A CN 1450024A CN 03113433 CN03113433 CN 03113433 CN 03113433 A CN03113433 A CN 03113433A CN 1450024 A CN1450024 A CN 1450024A
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Abstract
The present invention relates to a fire-resistant pouring material, its composition includes 65-70% of first-grade alumina aggregate whose grain size is less than 5 mm, 16-20% of first-grade alumina powder material whose grain size is less than 0.088 mm, 2-3% of active magnesium oxide whose grain size is less than 0.088 mm, 5-6% of sintered first-grade magnesite clinkes whose grain size is less than 0.088 mm, 5-6% of silicon dioxide micropowder, besides, 0.15-0.3% of sodium polyphosphate salt is added. Said invention utilizes the addition of active magnesium oxide in Al2O3.SiO2 series refractory material and has no cement dispersing agent so as to make the formed pouring material have high strength, good antioxidation property, good resistance of corrosion of molten refuse and good thermal stability.
Description
Technical field
The present invention relates to a kind of refractory materials, refer to a kind of anti-erosion of incinerator, anti-oxidant refractory castable of being applicable to especially.
Technical background
Refuse rubbish melting furnace is with 1300 ℃ of-1600 ℃ of fusion garbage ash and city, all is the high-temperature zone in the stove, and the burner mode of fossil fuels such as use heavy oil makes and presents intensive oxidizing atmosphere in the stove.Al
2O
3SiO
2Series refractory material is owing to contain a large amount of Na in the melts
+, K
+, Fe
2+, Ca
2+Deng metal ion, under this high temperature,, produce eutectic and make the refractory materials damage very easily with refractory materials generation etching reaction.
Summary of the invention
The present invention provides a kind of at Al just in order to overcome above-mentioned deficiency
2O
3SiO
2Improved anti-erosion, oxidation resistant refractory castable on the series refractory material basis, the main improvement is to add the active MgO fine powder in component, makes it to form Al
2O
3SiO
2The unsetting mould material of MgO adopts non-cement wedding agent, magnesite clinker to avoid a large amount of Ca simultaneously
2+Bring into, concrete component proportioning is: (weight percent)
One-level alumina aggregate＜5mm 65-70%
One-level alumina powder＜0.088mm 16-20%
Activated magnesia＜0.088mm 2-3%
Sintering one-level magnesia＜0.088mm 5-6%
Fine silica powder 5-6% adds:
Polyphosphoric acid sodium salt 0.15-0.3%
The Al that the present invention forms
2O
3SiO
2MgO is that unsetting mould material is used for the waste incineration liner, has intensity height, anti-oxidation characteristics, and the melts of anti-rubbish corrodes and Heat stability is good; Activated magnesia in the mould material is the light-burned MgO of magnesite after 800 ℃ of-850 ℃ of calcinings, this MgO can produce the intensive hydration, activated magnesia under oven-dried condition very easily produces the olivinization reaction with helping the wedding agent fine silica powder, makes mould material obtain high intensity; Polyphosphoric acid sodium salt as dispersion agent is added in the mould material, and the mould material amount of water is reduced, and has reduced the void content of mould material, has improved the erosion-resisting characteristics of material.
The one-level alumina aggregate of mould material of the present invention generally adopts a grade proportioning, and the relations of distribution are as follows:
5-3mm∶3-1mm∶1-0mm＝1.3-1.4∶1.2-1.3∶1
The present invention passes through at Al
2O
3SiO
2Add activated magnesia and non-cement dispersion agent in the series refractory material, the mould material of formation has intensity height, anti-oxidation characteristics, and the melts of anti-rubbish corrodes and Heat stability is good.
Embodiment
Embodiment 1, refractory castable, and the component proportioning is: (weight percent %)
The one-level alumina
26 parts of 5-3mm
23 parts of 3-1mm
19 parts of 1-0mm
18 parts of＜0.088mm
3 parts of the activated magnesias of＜0.088mm
5 parts in the sintering one-level magnesia of＜0.088mm
Fine silica powder 6 adds especially:
0.2 part of tripoly phosphate sodium STPP wherein, activated magnesia is the light-burned MgO of magnesite after 800 ℃ of-850 ℃ of calcinings.
Embodiment 2, refractory castable, and the component proportioning is: (weight percent %)
The one-level alumina
25 parts of 5-3mm
22 parts of 3-1mm
18 parts of 1-0mm
20 parts of＜0.088mm
3 parts of the activated magnesias of＜0.088mm
6 parts in the sintering one-level magnesia of＜0.088mm
Fine silica powder 6 adds especially:
0.25 part of tripoly phosphate sodium STPP wherein, activated magnesia is the light-burned MgO of magnesite after 800 ℃ of-850 ℃ of calcinings.
Embodiment 3, refractory castable, and the component proportioning is: (weight percent %)
The one-level alumina
26 parts of 5-3mm
24 parts of 3-1mm
20 parts of 1-0mm
17 parts of＜0.088mm
2 parts of the activated magnesias of＜0.088mm
6 parts in the sintering one-level magnesia of＜0.088mm
Fine silica powder 5 adds especially:
0.3 part of tripoly phosphate sodium STPP wherein, activated magnesia is the light-burned MgO of magnesite after 800 ℃ of-850 ℃ of calcinings.
The refractory castable that the said ratio combination is made, after testing, its performance perameter is:
Volume density: 2.6-2.7g/cm
3
Compressive strength (1350 ℃ * 3h): 〉=70Mpa
Burning the back line changes: (1450 ℃ * 3h): 0--+0.3%
Refractoriness: 〉=1790 ℃
Claims (3)
1. refractory castable is characterized in that the component proportioning is: (weight percent)
One-level alumina aggregate＜5mm 65-70%
One-level alumina powder＜0.088mm 16-20%
Activated magnesia＜0.088mm 2-3%
Sintering one-level magnesia＜0.088mm 5-6%
Fine silica powder 5-6% adds:
Polyphosphoric acid sodium salt 0.15-0.3%
2. refractory castable according to claim 1 is characterized in that activated magnesia is the light-burned MgO of magnesite after 800 ℃ of-850 ℃ of calcinings.
3. refractory castable according to claim 1 and 2 is characterized in that one-level alumina aggregate adopts the level proportioning, and the relations of distribution are: 5-3mm: 3-1mm: 1-0mm=1.3-1.4: 1.2-1.3: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113433 CN1261390C (en) | 2003-05-09 | 2003-05-09 | Refractory casting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113433 CN1261390C (en) | 2003-05-09 | 2003-05-09 | Refractory casting material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1450024A true CN1450024A (en) | 2003-10-22 |
| CN1261390C CN1261390C (en) | 2006-06-28 |
Family
ID=28684071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03113433 Expired - Fee Related CN1261390C (en) | 2003-05-09 | 2003-05-09 | Refractory casting material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1261390C (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296324C (en) * | 2005-04-08 | 2007-01-24 | 上海彭浦特种耐火材料厂 | Improved type casting material based on bauxite for middle-small type ladle and preparation method |
| CN102030549A (en) * | 2010-11-08 | 2011-04-27 | 宁波市胜源技术转移有限公司 | Method for manufacturing composite tunnel fireproof board |
| CN102153360A (en) * | 2011-05-10 | 2011-08-17 | 莱芜钢铁股份有限公司 | Gunning refractory for heating furnace |
| CN102173834A (en) * | 2011-01-20 | 2011-09-07 | 安徽宁火新材料有限公司 | Roller kiln white backing plate and processing method thereof |
| CN101580398B (en) * | 2009-06-29 | 2011-11-02 | 河南省耕生耐火材料有限公司 | Ladle kerb casting material and ladle kerb preparation method thereof |
| CN102443377A (en) * | 2011-09-30 | 2012-05-09 | 河南金源新材料科技股份有限公司 | Method for preparing medium aluminum grinding balls by secondary ball milling |
| CN102504762A (en) * | 2011-09-30 | 2012-06-20 | 河南金源新材料科技股份有限公司 | Medium-purity aluminum grinding balls and method of preparing same |
| CN102557686A (en) * | 2011-12-31 | 2012-07-11 | 长兴煤山新型炉料有限公司 | Rare-earth modified aluminum nitrogen swing spout castables |
| CN102674859A (en) * | 2012-05-24 | 2012-09-19 | 洛阳理工学院 | Refractory castable for kilneye and kiln head cover of rotary kiln |
| CN102746007A (en) * | 2012-07-24 | 2012-10-24 | 三门峡电熔刚玉有限责任公司 | Aluminum oxide material |
| CN102775173A (en) * | 2012-08-17 | 2012-11-14 | 武汉科技大学 | Heat-insulation magnesium casting material and preparation method thereof |
| CN103467036A (en) * | 2013-08-29 | 2013-12-25 | 浙江长兴强立耐火材料有限公司 | Multi-cement low-temperature and high-strength ceramic wear-resistant material |
| CN108892486A (en) * | 2018-08-23 | 2018-11-27 | 安徽瑞泰新材料科技有限公司 | A kind of anti-explosion refractory castable |
| CN113173780A (en) * | 2021-04-26 | 2021-07-27 | 郑州大学 | Magnesia-bonded refractory castable containing in-situ spinel and preparation method thereof |
| CN113698186A (en) * | 2021-08-31 | 2021-11-26 | 浙江锦诚新材料股份有限公司 | Alumina-based cordierite explosion-proof castable |
-
2003
- 2003-05-09 CN CN 03113433 patent/CN1261390C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296324C (en) * | 2005-04-08 | 2007-01-24 | 上海彭浦特种耐火材料厂 | Improved type casting material based on bauxite for middle-small type ladle and preparation method |
| CN101580398B (en) * | 2009-06-29 | 2011-11-02 | 河南省耕生耐火材料有限公司 | Ladle kerb casting material and ladle kerb preparation method thereof |
| CN102030549B (en) * | 2010-11-08 | 2013-02-20 | 宁波市胜源技术转移有限公司 | Method for manufacturing composite tunnel fireproof board |
| CN102030549A (en) * | 2010-11-08 | 2011-04-27 | 宁波市胜源技术转移有限公司 | Method for manufacturing composite tunnel fireproof board |
| CN102173834B (en) * | 2011-01-20 | 2013-01-16 | 安徽宁火新材料有限公司 | Roller kiln white backing plate and processing method thereof |
| CN102173834A (en) * | 2011-01-20 | 2011-09-07 | 安徽宁火新材料有限公司 | Roller kiln white backing plate and processing method thereof |
| CN102153360A (en) * | 2011-05-10 | 2011-08-17 | 莱芜钢铁股份有限公司 | Gunning refractory for heating furnace |
| CN102504762A (en) * | 2011-09-30 | 2012-06-20 | 河南金源新材料科技股份有限公司 | Medium-purity aluminum grinding balls and method of preparing same |
| CN102443377A (en) * | 2011-09-30 | 2012-05-09 | 河南金源新材料科技股份有限公司 | Method for preparing medium aluminum grinding balls by secondary ball milling |
| CN102557686A (en) * | 2011-12-31 | 2012-07-11 | 长兴煤山新型炉料有限公司 | Rare-earth modified aluminum nitrogen swing spout castables |
| CN102674859A (en) * | 2012-05-24 | 2012-09-19 | 洛阳理工学院 | Refractory castable for kilneye and kiln head cover of rotary kiln |
| CN102746007A (en) * | 2012-07-24 | 2012-10-24 | 三门峡电熔刚玉有限责任公司 | Aluminum oxide material |
| CN102775173A (en) * | 2012-08-17 | 2012-11-14 | 武汉科技大学 | Heat-insulation magnesium casting material and preparation method thereof |
| CN103467036A (en) * | 2013-08-29 | 2013-12-25 | 浙江长兴强立耐火材料有限公司 | Multi-cement low-temperature and high-strength ceramic wear-resistant material |
| CN108892486A (en) * | 2018-08-23 | 2018-11-27 | 安徽瑞泰新材料科技有限公司 | A kind of anti-explosion refractory castable |
| CN108892486B (en) * | 2018-08-23 | 2021-06-04 | 安徽瑞泰新材料科技有限公司 | Explosion-proof castable |
| CN113173780A (en) * | 2021-04-26 | 2021-07-27 | 郑州大学 | Magnesia-bonded refractory castable containing in-situ spinel and preparation method thereof |
| CN113698186A (en) * | 2021-08-31 | 2021-11-26 | 浙江锦诚新材料股份有限公司 | Alumina-based cordierite explosion-proof castable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1261390C (en) | 2006-06-28 |
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