CN107721443A - A kind of pink fused alumina cementitious matter and preparation method thereof - Google Patents
A kind of pink fused alumina cementitious matter and preparation method thereof Download PDFInfo
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- CN107721443A CN107721443A CN201711055818.3A CN201711055818A CN107721443A CN 107721443 A CN107721443 A CN 107721443A CN 201711055818 A CN201711055818 A CN 201711055818A CN 107721443 A CN107721443 A CN 107721443A
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- Prior art keywords
- fused alumina
- pink fused
- cementitious matter
- pink
- alumina
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/105—Refractories from grain sized mixtures containing chromium oxide or chrome ore
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of pink fused alumina cementitious matter and preparation method thereof.The pink fused alumina cementitious matter includes major ingredient and additive, and the major ingredient includes the raw material of following percentage by weight：3 1mm pink fused aluminas particles 5~15%；1 0mm pink fused aluminas particle 5~15%；8 5mm alumina particles 8 15%；5 3mm alumina particles 5 20%；3 1mm corundum in granules 5~15%；Magnesia particle 2~6%；Magnesia powder 2~6%；Corundum fine powder 10~15%；Alpha-aluminium oxide micro mist 5~10%.The properties of the pink fused alumina cementitious matter obtained according to method disclosed by the invention meet set quota requirement, and its stable performance slag resistance is good, the ladle bottom life-span can be effectively improved using the product, simultaneously because contain pink fused alumina waste material in the product, waste material is fully used, bring significant economic and social benefit.
Description
Technical field
The invention belongs to refractory material indefinite form product scope, and in particular to a kind of pink fused alumina cementitious matter and its preparation side
Method.
Background technology
At present, mainly there is the cast connection of corundum cementitious matter between bottom of steel ladle brick cup and bag bottom brick, due to corundum glue
Contain the stable performance materials such as more plate diamond spar, white fused alumina in ramming material so that corundum cementitious matter performance is highly stable, can be remote
Far meet steel mill's ladle life requirement, but price is of a relatively high, as metallurgical technology is continued to develop with progressive, refractory raw material price
Constantly skyrocket, for corundum cementitious matter, should can meet demand, improve ladle life, can be iron and steel enterprise again and resistance to
Fiery enterprise brings economic benefit.
The content of the invention
Based on background above, the invention provides a kind of pink fused alumina cementitious matter and preparation method thereof.The pink fused alumina is cementing
Material is primarily adapted for use in bottom of steel ladle position, the ladle bottom life-span can be effectively improved using the product, simultaneously because containing in the product
There is pink fused alumina (aluminium chromium slag) waste material, waste material is fully used, bring significant economic and social benefit.
The technical scheme that the present invention takes is：
A kind of pink fused alumina cementitious matter, the pink fused alumina cementitious matter include major ingredient and additive, and the major ingredient includes following heavy
Measure the raw material of percentage：
Further, the 8-5mm alumina particles can be replaced 8-5mm corundum in granules, and/or, the 5-3mm alumina
Grain can be replaced 5-3mm corundum in granules；Corundum in granules can be a kind of in plate diamond spar particle, white fused alumina particle.
The additive includes metallic aluminium powder, organic fiber and water reducer.
The percentage by weight that each additive component accounts for major ingredient be respectively metallic aluminium powder 0.1~0.5%, organic fiber 0.1~
0.5%th, water reducer 0.1~0.5%.
The water reducer is sodium tripolyphosphate and/or calgon.
The particle diameter of the magnesia particle is 1-0mm；Magnesia can be fused magnesite or crystallize magnesia greatly.
The granularity of the magnesia powder is 100-180 mesh.
The granularity of the corundum fine powder is 100-180 mesh；The corundum fine powder is plate diamond spar fine powder or white fused alumina
Fine powder.
Present invention also offers the preparation method of the pink fused alumina cementitious matter, the preparation method comprises the following steps：
(1) corundum class fine powder, magnesia powder, Alpha-alumina micro mist and the metallic aluminium powder in raw material are subjected to premix 25-
30min；
(2) particulate material is first added into muller, mixed grind adds organic fiber and water reducer is kneaded, so after 1~2 minute
The premix fine powder that step (1) obtains is added afterwards, continues to be kneaded to good shaping pug performance, and total kneading time is 10-
15min。
The pink fused alumina cementitious matter meets following index requests：Al in component2O3Content >=90%, 110 DEG C × 24h's
Compressive resistance >=30MPa, bulk density >=2.9g/cm3；1450 DEG C × 3h compressive resistance >=60MPa, bulk density >=
2..8g/cm3。
Involved pink fused alumina is mainly electric smelting pink fused alumina in the present invention, is to prepare crome metal or evanohm with smelting outside stove
Caused discarded object, commonly referred to as aluminium chromium slag, its main component are Al2O3, contain certain Cr2O3, and iron calcium etc. is miscellaneous on a small quantity
Matter.Be it is a kind of have excellent high performance, the waste material of good resistance to slag, be efficiently applied at present nonferrous metallurgy, glass melter,
The industries such as rubbish melting incinerating stove.Pink fused alumina cementitious matter technical indicator and current corundum cementitious matter phase using pink fused alumina production
When steel mill's requirement can be met, and substantially reduces production cost.
In the formula of pink fused alumina cementitious matter disclosed by the invention, with reference to closestpacking principle, raw material particle size is mainly by 8-
5mm, 5-3mm, 3-1mm, 1-0mm and fine powder composition.Alumina particle or corundum in granules provide skeletal support effect in formula, can
Improve the performances such as product strength, anti-erosion；Corundum fine powder plays filling substrate；Magnesia particle and fine powder are advantageous to produce magnesium
Aluminate, improve product corrosion resistance；Micro mist and additive improve product high-temperature behavior.Water reducer reduces cementitious matter and adds water
Amount, product air holes are reduced, improve product compactness.Pink fused alumina particle due to be aluminum oxide and chromium oxide solid solution, can be effective
Particle in component is connected with fine powder, greatly improves product strength.The present invention produces fire resistive material product using pink fused alumina,
Regenerated resource development and utilization is realized, while and can reaches steel mill's technical requirement, has significantly Social benefit and economic benefit.Its
Product index can meet current steel mill's index request, and service condition with it is without exception before.
Embodiment
With reference to embodiment, the present invention is described in detail.
Embodiment 1
A kind of pink fused alumina cementitious matter, the pink fused alumina cementitious matter include major ingredient and additive, and the additive includes metal
Aluminium powder, organic fiber and sodium tripolyphosphate, the percentage by weight that three accounts for major ingredient are respectively：Metallic aluminium powder 0.4%, organic fiber
0.4%th, sodium tripolyphosphate 0.4%；Raw material and percentage by weight in the major ingredient is as shown in table 1；Further, the alumina
Particle chemical constituent is：Al2O3>=88%；Chemical constituent in white fused alumina：Al2O3>=98.5%, pH value is in neutrality；In pink fused alumina
Alumina content is more than 94%, chromic oxide content and is less than 3%；Chemical constituent MgO >=97% of fused magnesite；Organic fiber is hair
Velvet-like filament.
Table 1
The preparation method of the pink fused alumina cementitious matter is：
(1) corundum class fine powder, magnesia powder, Alpha-alumina micro mist and the metallic aluminium powder in raw material are subjected to premix 25-
30min；
(2) particulate material is first added into muller, mixed grind adds organic fiber and water reducer is kneaded, so after 1~2 minute
The premix fine powder that step (1) obtains is added afterwards, continues to be kneaded to good shaping pug performance, and total kneading time is 10-
15min；
(3) through after the assay was approved, loading ton bag, and carry out mark.
Embodiment 2
A kind of pink fused alumina cementitious matter, the pink fused alumina cementitious matter include major ingredient and additive, and the additive includes metal
Aluminium powder, organic fiber and six segregation sodium phosphates, the percentage by weight that three accounts for major ingredient are respectively：Metallic aluminium powder 0.2%, organic fibre
Dimension 0.3%, calgon 0.5%；Raw material and percentage by weight in the major ingredient is as shown in table 2；Further, white fused alumina
Middle chemical constituent：Al2O3>=98.5%, pH value is in neutrality；Alumina content is more than 94%, chromic oxide content and is less than in pink fused alumina
3%；Chemical constituent MgO >=97% of fused magnesite；Organic fiber is lint shape filament.
Table 2
The preparation method of the pink fused alumina cementitious matter is the same as embodiment 1.
Embodiment 3
A kind of pink fused alumina cementitious matter, the pink fused alumina cementitious matter include major ingredient and additive, and the additive includes metal
Aluminium powder, organic fiber, sodium tripolyphosphate and six segregation sodium phosphates, four percentage by weights for accounting for major ingredient are respectively：Metallic aluminium powder
0.5%th, organic fiber 0.1%, sodium tripolyphosphate 0.3%, calgon 0.1%；Raw material and weight hundred in the major ingredient
Divide than as shown in table 3；Further, the alumina particle chemical constituent is：Al2O3>=88%；Chemical constituent in white fused alumina：
Al2O3>=98.5%, pH value is in neutrality；Alumina content is more than 94%, chromic oxide content and is less than 3% in pink fused alumina；Fused magnesite
Chemical constituent MgO >=97%；Organic fiber is lint shape filament.
Table 3
The preparation method of the pink fused alumina cementitious matter is the same as embodiment 1.
Comparative example 1
A kind of pink fused alumina cementitious matter, the pink fused alumina cementitious matter include major ingredient and additive, and the additive includes metal
Aluminium powder and six segregation sodium phosphates, the percentage by weight that both account for major ingredient are respectively：Metallic aluminium powder 0.5%, calgon
0.4%；Raw material and percentage by weight in the major ingredient is as shown in table 4；Further, the alumina particle chemical constituent is：
Al2O3>=88%；Chemical constituent in white fused alumina：Al2O3>=98.5%, pH value is in neutrality；Alumina content is more than in pink fused alumina
94%th, chromic oxide content is less than 3%；Chemical constituent MgO >=97% of fused magnesite；Organic fiber is lint shape filament.
Table 4
The preparation method of the pink fused alumina cementitious matter is the same as embodiment 1.
Comparative example 2
A kind of pink fused alumina cementitious matter, the pink fused alumina cementitious matter include major ingredient and additive, and the additive includes metal
Aluminium powder and six segregation sodium phosphates, the percentage by weight that both account for major ingredient are respectively：Metallic aluminium powder 0.5%, calgon
0.4%；Raw material and percentage by weight in the major ingredient is as shown in table 5；Further, the alumina particle chemical constituent is：
Al2O3>=88%；Chemical constituent in white fused alumina：Al2O3>=98.5%, pH value is in neutrality；Alumina content is more than in pink fused alumina
94%th, chromic oxide content is less than 3%；Chemical constituent MgO >=97% of fused magnesite；Organic fiber is lint shape filament.
Table 5
The preparation method of the pink fused alumina cementitious matter is the same as embodiment 1.
The performance test results of pink fused alumina cementitious matter in various embodiments above and comparative example are as shown in table 6：
Table 6
As can be seen from Table 6, the properties of the pink fused alumina cementitious matter obtained according to method disclosed by the invention accord with
Set quota requirement is closed, and its stable performance slag resistance is good.
The above-mentioned detailed description carried out with reference to embodiment to a kind of pink fused alumina cementitious matter and preparation method thereof, is illustrative
Rather than it is limited, several embodiments can be included according to limited scope, therefore do not departing from present general inventive concept
Under change and modifications, should belong within protection scope of the present invention.
Claims (10)
1. a kind of pink fused alumina cementitious matter, it is characterised in that the pink fused alumina cementitious matter includes major ingredient and additive, the major ingredient bag
Include the raw material of following percentage by weight：
2. pink fused alumina cementitious matter according to claim 1, it is characterised in that the 8-5mm alumina particles can be replaced 8-
5mm corundum in granules, and/or, the 5-3mm alumina particles can be replaced 5-3mm corundum in granules.
3. pink fused alumina cementitious matter according to claim 1 or 2, it is characterised in that the additive includes metallic aluminium powder, had
Machine fiber and water reducer.
4. the pink fused alumina cementitious matter according to claim 1 or 3, it is characterised in that each additive component accounts for the weight of major ingredient
Percentage is respectively metallic aluminium powder 0.1~0.5%, organic fiber 0.1~0.5%, water reducer 0.1~0.5%.
5. pink fused alumina cementitious matter according to claim 3, it is characterised in that the water reducer be sodium tripolyphosphate and/or
Calgon.
6. pink fused alumina cementitious matter according to claim 1 or 2, it is characterised in that the particle diameter of the magnesia particle is 1-
0mm。
7. pink fused alumina cementitious matter according to claim 1 or 2, it is characterised in that the granularity of the magnesia powder is 100-
180 mesh.
8. pink fused alumina cementitious matter according to claim 1 or 2, it is characterised in that the granularity of the corundum fine powder is
100-180 mesh.
9. the preparation method of pink fused alumina cementitious matter according to claim 1 or 2, it is characterised in that the preparation method bag
Include following steps：
(1) corundum class fine powder, magnesia powder, Alpha-alumina micro mist and the metallic aluminium powder in raw material are subjected to premix 25-30min；
(2) particulate material is first added into muller, mixed grind adds organic fiber and water reducer is kneaded, Ran Houjia after 1~2 minute
Enter the premix fine powder that step (1) obtains, continue to be kneaded to good shaping pug performance, total kneading time is 10-15min.
10. preparation method according to claim 9, it is characterised in that the pink fused alumina cementitious matter meets following indexs will
Ask：Al in component2O3Content >=90%, 110 DEG C × 24h compressive resistance >=30MPa, bulk density >=2.9g/cm3；1450
DEG C × 3h compressive resistance >=60MPa, bulk density >=2..8g/cm3。
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Cited By (3)
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| CN114477976A (en) * | 2022-01-17 | 2022-05-13 | 瑞泰马钢新材料科技有限公司 | Cementing material for steel ladle and preparation method thereof |
| CN116120042A (en) * | 2023-01-19 | 2023-05-16 | 河北国亮新材料股份有限公司 | Method for closely stacking refractory material matrixes and refractory material |
| CN116283316A (en) * | 2023-02-16 | 2023-06-23 | 马鞍山钢铁股份有限公司 | Chrome corundum castable, preparation method and application thereof in steel ladle |
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