CN103121850A - Non-cement-bound corundum fabricated part and production method thereof - Google Patents
Non-cement-bound corundum fabricated part and production method thereof Download PDFInfo
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- CN103121850A CN103121850A CN2012102294689A CN201210229468A CN103121850A CN 103121850 A CN103121850 A CN 103121850A CN 2012102294689 A CN2012102294689 A CN 2012102294689A CN 201210229468 A CN201210229468 A CN 201210229468A CN 103121850 A CN103121850 A CN 103121850A
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Abstract
The invention relates to a non-cement-bound corundum fabricated part and a production method thereof. The non-cement-bound corundum fabricated part comprises the following materials in percentage by weight: 60%-70% of corundum particles, 5%-20% of corundum fine powder, 5%-15% of activated aluminum oxide powder, 5%-10% of spinel powder, 4%-8% of hydrated alumina powder, 0.5%-3% of silica powder, 0.1%-0.3% of water reducer and 4.5%-5.5% of water. During the production process, the materials are uniformly mixed in a tapered mixing mill, added to a stirrer for being stirred into plug by adding water, poured to a mould for being vibrated and formed, and dried to obtain the corundum fabricated part disclosed by the invention. The non-cement-bound corundum fabricated part disclosed by the invention has excellent performances, product apparent porosity of 10%-15%, compression strength of 80Mpa-150Mpa, rupture strength of 14Mpa-18Mpa and can bear the high temperature of higher than 1700 DEG C, and the comprehensive performance of the non-cement-bound corundum fabricated part is better than that of the low-cement corundum fabricated part.
Description
Technical field
The present invention relates to the corundum prefabrication in a kind of STEELMAKING PRODUCTION, particularly relate to a kind of corundum prefabricated component and production method thereof of non-cement combination.
Background technology
For the low even situation of loss of at present most iron and steel enterprise profit, a lot of iron and steel enterprises make a profit instead of suffering a loss with realization by the Clean Steel of smelting high added value, thereby refractory materials has been proposed requirements at the higher level.Can affect the purity of steel grade owing to containing CaO in low cement series prefabrication, cause the content of CaO in Clean Steel not to be well controlled.Be to reduce CaO to the disadvantageous effect of steel grade, research non-cement corundum prefabrication has become at present the effort target of each anti-material producer.
Through retrieval, application number is a kind of ladle of Patent Application Publication high-strength aluminium-magnesium spinel pouring material of 201010210113.6, and raw material is: white fused alumina particle 40-70%, white fused alumina fine powder 7-20%, aluminum-spinel fine powder 10-30%, alumina powder 2-15%, pure calcium aluminate cement 2-8%, six meta-acid sodium and sodium lignosulfonate 0.01-1%, water 3-8%.Refractoriness under load and the folding strength of this mould material are higher, have solved erosion resistance and the poor shortcoming of antistripping of traditional corundum fireproof mould material, have improved the hot strength of mould material.But contain cement in formula, can cause the CaO content in steel better not controlled, steel grade is caused disadvantageous effect, can not satisfy the actual production demand of existing iron and steel enterprise.
Summary of the invention
The technical problem to be solved in the present invention is: overcome defective of the prior art, propose corundum prefabricated component and the production method thereof of a kind of anti-erosion, intensity is high, volume stability good, high-temperature behavior is good non-cement combination.
Technical scheme of the present invention:
A kind of corundum prefabricated component of non-cement combination, by weight percentage, raw material consists of: the active oxidation aluminium powder of the corundum in granules of 60-70%, the corundum fine powder of 5-20%, 5-15%, the spinel powder of 5-10%, the alumina hydrate powder of 4-8%, 0.5-3% silicon powder, the above-mentioned raw materials total amount is 100%, adds the water reducer of above-mentioned raw materials total amount 0.1-0.3% and the water of 4.5-5.5%.
Described corundum in granules comprises that corundum 10-20%, corundum 10-20%, the particle diameter≤1mm of 1mm＜particle diameter≤3mm of corundum 10-20%, 3mm＜particle diameter≤5mm of corundum 5-20%, the 5mm＜particle diameter≤8mm of 8mm＜particle diameter≤15mm accounts for 5-20%, the Al in corundum in granules
2O
3Content 〉=99.21%.
Described corundum fine powder particle diameter≤0.045mm, wherein Al
2O
3Content 〉=99.21%.
Particle diameter≤the 0.045mm of described active oxidation aluminium powder, wherein Al
2O
3Content 〉=99.7%, Na
2O content≤0.11%.
Described spinel powder is aluminium riched spinel, particle diameter≤0.074mm, wherein Al
2O
3Content is 74.12%, MgO content is 24.66%.
Particle diameter≤the 0.045mm of described alumina hydrate powder, wherein Al
2O
3Content 〉=92%.
SiO in described silicon powder
2Content 〉=92%, median size are 0.1-0.3 μ m.
Described water reducer is a kind of in tripoly phosphate sodium STPP or Sodium hexametaphosphate 99, or the mixture of two kinds.
The production method of the corundum prefabricated component of described non-cement combination first takes each raw material by proportioning, adds the taper mixing roll, mixes, and adds in stirrer, adds water and stirs into pug; Then pour vibratory compaction in mould into, under the condition of 250 ± 20 ℃ dry 8-10 hour, namely get the combining corundum based prefabricated component of non-cement.
Positive beneficial effect of the present invention:
1, scientific formulation of the present invention, between component, compatibleness is good, product performance are good, in embodiment, the apparent porosity of product is 10-15% after testing, compressive strength is 80-150Mpa, folding strength is 14-18Mpa, can bear the high temperature more than 1700 ℃, and its over-all properties obviously is better than low cement corundum prefabricated component.
2, the present invention adopts combined binder hydrated aluminum oxide and silicon powder can greatly improve the performance of product, hydrated aluminum oxide wherein is wedding agent, it is again senior refractory oxide, during high temperature, hydrated aluminum oxide changes Alpha-alumina into, so can significantly improve the resistance to elevated temperatures of goods, extend its work-ing life; Wedding agent silicon powder and hydrated aluminum oxide generate mullite when high temperature, produce volumetric expansion, and the introducing of this composition not only can reduce the void content of product, and the physicals such as withstand voltage, the anti-folding of product also improves greatly.
3, do not contain cement and calcium oxide component in prefabricated component of the present invention, formed the corundum based refractory materials of non-cement combination, avoided the disadvantageous effect of CaO to steel grade in the Portland cement corundum products in steelmaking process, this prefabrication can satisfy the need of production of Clean Steel, and result of use is good.
4, preform production method of the present invention is simple, and cost is lower, is easy to apply.
Embodiment
Following examples only in order to further illustrate the present invention, do not represent any limitation of the invention.Wen Zhongru is special instruction not, and percentage composition wherein is weight percentage.
Embodiment 1: a kind of corundum prefabricated component of non-cement combination, material composition is referring to table 1, be that raw material is: 60% corundum in granules, 11% corundum fine powder, 10% active oxidation aluminium powder, 10% spinel powder, 8% alumina hydrate powder, 1% silicon powder add the water reducer of above-mentioned raw materials 0.2% and 5% water.
Ingredient requirement:
(1) corundum in granules, comprise corundum 15%, the 1mm＜particle diameter≤3mm of corundum 15%, the 3mm＜particle diameter≤5mm of corundum 10%, the 5mm＜particle diameter≤8mm of 8mm＜particle diameter≤15mm corundum 10% ,≤1mm accounts for 10%, Al
2O
3Content 〉=99.21%;
(2) corundum fine powder, particle diameter≤0.045mm, Al
2O
3Content 〉=99.21%;
(3) active oxidation aluminium powder, Al
2O
3Content 〉=99.7%, Na
2O content≤0.11%, particle diameter≤0.045mm; 6
(4) spinel powder is aluminium riched spinel, and model is AM-75, particle diameter≤0.074mm, wherein Al
2O
3Content is 74.12%, MgO content is 24.66%;
(5) alumina hydrate powder, particle diameter≤0.045mm, Al
2O
3Content 〉=92.00%;
(6) silicon powder, SiO
2Content 〉=92%, particle diameter are between 0.1-0.3um;
(7) water reducer is a kind of in tripoly phosphate sodium STPP, Sodium hexametaphosphate 99, or both mixtures.
Production method: take each raw material by proportioning, add the taper mixing roll, mix in the taper mixing roll, add in stirrer, add water and stir into pug, then pour vibratory compaction in mould into, under 250 ± 20 ℃ dry 8-10 hour, namely get the corundum prefabricated component of non-cement combination.
Embodiment 2-10: the composition of the corundum prefabricated component of non-cement combination sees the following form 1, and ingredient requirement and production method are with example 1.
Table 1: in each embodiment, the material composition of prefabricated component (by weight percentage, %)
Claims (9)
1. the corundum prefabricated component of a non-cement combination, it is characterized in that: by weight percentage, raw material consists of: the active oxidation aluminium powder of the corundum in granules of 60-70%, the corundum fine powder of 5-20%, 5-15%, the spinel powder of 5-10%, the alumina hydrate powder of 4-8%, 0.5-3% silicon powder, the above-mentioned raw materials total amount is 100%, adds the water reducer of above-mentioned raw materials total amount 0.1-0.3% and the water of 4.5-5.5%.
2. corundum prefabricated component according to claim 1, it is characterized in that: described corundum in granules comprises that corundum 10-20%, corundum 10-20%, the particle diameter≤1mm of 1mm＜particle diameter≤3mm of corundum 10-20%, 3mm＜particle diameter≤5mm of corundum 5-20%, the 5mm＜particle diameter≤8mm of 8mm＜particle diameter≤15mm accounts for 5-20%, the Al2O3 content in corundum in granules 〉=99.21%.
3. corundum prefabricated component according to claim 1, is characterized in that: described corundum fine powder particle diameter≤0.045mm, wherein Al
2O
3Content 〉=99.21%.
4. corundum prefabricated component according to claim 1, is characterized in that: the particle diameter≤0.045mm of described active oxidation aluminium powder, wherein Al
2O
3Content 〉=99.7%, Na
2O content≤0.11%.
5. corundum prefabricated component according to claim 1, it is characterized in that: described spinel powder is aluminium riched spinel, particle diameter≤0.074mm, wherein Al
2O
3Content is 74.12%, MgO content is 24.66%.
6. corundum prefabricated component according to claim 1, is characterized in that: the particle diameter≤0.045mm of described alumina hydrate powder, wherein Al
2O
3Content 〉=92%.
7. corundum prefabricated component according to claim 1, is characterized in that: SiO in described silicon powder
2Content 〉=92%, median size are 0.1-0.3 μ m.
8. according to claim 1-7 described corundum prefabricated components of any one is characterized in that: described water reducer is a kind of in tripoly phosphate sodium STPP or Sodium hexametaphosphate 99, or the mixture of two kinds.
9. the production method of the corundum prefabricated component of the described non-cement combination of claim 1, is characterized in that: first take each raw material by proportioning, add the taper mixing roll, mix, add in stirrer, add water and stir into pug; Then pour vibratory compaction in mould into, under the condition of 250 ± 20 ℃ dry 8-10 hour, namely get the combining corundum based prefabricated component of non-cement.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110028313A (en) * | 2019-05-17 | 2019-07-19 | 山东工业职业学院 | A kind of corundum crucible and preparation method thereof |
| CN110062749A (en) * | 2016-12-08 | 2019-07-26 | 西门子股份公司 | Corrosion resistant ceramic material, powder, mud and component |
| CN110317071A (en) * | 2019-08-16 | 2019-10-11 | 瑞泰马钢新材料科技有限公司 | A kind of ladle working lining low-porosity microporous preformed bricks and its production method |
| CN112194471A (en) * | 2020-10-23 | 2021-01-08 | 中钢洛耐科技股份有限公司 | Ultralow-porosity high-alumina brick and preparation process thereof |
| CN113943167A (en) * | 2021-12-02 | 2022-01-18 | 湖南湘钢瑞泰科技有限公司 | RH dip pipe castable and preparation method thereof |
| CN113998992A (en) * | 2021-12-06 | 2022-02-01 | 河南熔金高温材料股份有限公司 | Carbon-free upper casting nozzle brick and production method thereof |
| CN114292093A (en) * | 2021-12-27 | 2022-04-08 | 偃师中岳耐火材料有限公司 | Corundum spinel carbon-free prefabricated part for clean steelmaking |
| CN115947590A (en) * | 2022-11-03 | 2023-04-11 | 攀钢冶金材料有限责任公司 | RH insert tube castable and production method thereof |
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Cited By (10)
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| CN110062749A (en) * | 2016-12-08 | 2019-07-26 | 西门子股份公司 | Corrosion resistant ceramic material, powder, mud and component |
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| CN110317071A (en) * | 2019-08-16 | 2019-10-11 | 瑞泰马钢新材料科技有限公司 | A kind of ladle working lining low-porosity microporous preformed bricks and its production method |
| CN112194471A (en) * | 2020-10-23 | 2021-01-08 | 中钢洛耐科技股份有限公司 | Ultralow-porosity high-alumina brick and preparation process thereof |
| CN113943167A (en) * | 2021-12-02 | 2022-01-18 | 湖南湘钢瑞泰科技有限公司 | RH dip pipe castable and preparation method thereof |
| CN113943167B (en) * | 2021-12-02 | 2022-12-27 | 湖南湘钢瑞泰科技有限公司 | RH dip pipe castable and preparation method thereof |
| CN113998992A (en) * | 2021-12-06 | 2022-02-01 | 河南熔金高温材料股份有限公司 | Carbon-free upper casting nozzle brick and production method thereof |
| CN114292093A (en) * | 2021-12-27 | 2022-04-08 | 偃师中岳耐火材料有限公司 | Corundum spinel carbon-free prefabricated part for clean steelmaking |
| CN115947590A (en) * | 2022-11-03 | 2023-04-11 | 攀钢冶金材料有限责任公司 | RH insert tube castable and production method thereof |
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| CN103121850B (en) | 2015-04-15 |
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