CN108530043A - A kind of aluminium chromium matter disperse breathable composite and preparation method thereof - Google Patents
A kind of aluminium chromium matter disperse breathable composite and preparation method thereof Download PDFInfo
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- CN108530043A CN108530043A CN201810566838.5A CN201810566838A CN108530043A CN 108530043 A CN108530043 A CN 108530043A CN 201810566838 A CN201810566838 A CN 201810566838A CN 108530043 A CN108530043 A CN 108530043A
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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
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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
- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Abstract
The invention discloses a kind of aluminium chromium matter disperse breathable composite, including aggregate, matrix and sintering aid, the shape of aggregate is spheric granules and plain particles, and the addition of spheric granules accounts for the 35 100% of aggregate total weight；The addition of plain particles accounts for the 0 65% of aggregate total weight；Parts by weight are added in aggregate：75 parts 97 parts, matrix is added parts by weight and is：3 parts 25 parts, matrix includes chromium oxide fine powder, aluminum oxide fine powder；Chromium oxide fine powder addition accounts for the 25 65% of matrix total weight, and aluminum oxide fine powder addition accounts for the 35 75% of matrix total weight;The addition of sintering aid is the 0 25% of aggregate and matrix total weight, and additional bonding agent, addition is the 1 10% of aggregate and matrix total weight.Present invention process is simple, has many advantages, such as the higher porosity, air permeability, higher intensity, long lifespan.
Description
Technical field
The invention belongs to fire resisting material field, a kind of aluminium chromium matter disperse breathable composite and its preparation side are related generally to
Method, it is the critical material of non-ferrous smelting furnace ventilated element.
Background technology
In the production of copper refining Rotary Anode Furnace, uneven since there are temperature in burner hearth, chemical composition is irregular, causes
Interior some the dead angle positions bonding of burner hearth is serious, chemical component fluctuation is larger, therefore, is used at Rotary Anode Furnace furnace bottom position
Air brick technology, air brick technology be exactly Rotary Anode Furnace furnace bottom position install 5-8 blocks of air bricks and it is relevant with suit
It sets, the ventilated body of air brick is nitrogen (N2), can by control system to every block of air brick logical nitrogen pressure and flow
It is controlled, to reaching best melt mixing effect, the heat exchange in stove is reinforced with this, shortens Rotary Anode Furnace
Activity duration improves operating efficiency, reduces energy consumption.
Currently, being broadly divided into three types by air brick gas passage form, i.e. diffusion-type, straight-through orthotype, slit is fixed
To type.Dispersive air brick structure, the tiny perforation of stomata, the porosity are high, the flowing of gas and are reasonably distributed, and are blown under equal conditions
The nitrogen bubble gone out is more, but manufacturing process is more complex；Straight-through orthotype air brick in fine steel tube embedment brick in varying numbers by making
At aperture is generally large, is 0.6~1.0 mm, and bottom blowing effect is preferable, and service life is high, but is easily blocked in the later stage, influences to blow out
Rate；Slit orthotype air brick is in forming process, and inlaid material global formation, during high temperature firing inlaid material by
Heat fusing volatilizees and forms slit, and slit width is 0.18 mm or so, and inert gas medium enters molten bath by slit, due to
The permeability of copper water is higher than molten steel, is easy stifled.Traditional dispersive air brick core mainly uses the life of the crushing plants such as two pairs of rollers or circular cone
The aspherical particle of production makees raw material, and raw material shape is usually granular, rodlike etc., carries irregular edges and corners shape, after accumulation,
Gap between raw material can be filled, to make gap become smaller, therefore, air brick stomata made from such shape raw material
Rate is low, poor air permeability.
Invention content
It is insufficient existing for above-mentioned technical problem and multiple for common dispersive air brick technique the invention aims to solve
It the problems such as miscellaneous, and air permeability is not easy to control, uses homemade spheric granules for raw material, one is had developed by adding sintering aid etc.
A kind of kind aluminium chromium matter disperse simple for process, with the higher porosity, air permeability, higher intensity, long lifespan is breathed freely compound
Material and preparation method thereof.
The technical solution adopted in the present invention：A kind of aluminium chromium matter disperse breathable composite and preparation method thereof, wherein multiple
Al in condensation material2O3Han Liang≤80%, it is former by introducing a kind of homemade spheric granules in the preparation process of ventilated element
Material forms a kind of permeability better than composite material made of plain particles.
The present invention includes aggregate, matrix and sintering aid, and the shape of aggregate is spheric granules and plain particles, spheric granules
Addition accounts for the 35-100% of aggregate total weight；The addition of plain particles accounts for the 0-65% of aggregate total weight；Weight is added in aggregate
Number is：75 parts -97 parts, matrix is added parts by weight and is：3 parts -25 parts, matrix includes chromium oxide fine powder, aluminum oxide fine powder；Oxygen
Change the 25-65% that chromium fine powder addition accounts for matrix total weight, aluminum oxide fine powder addition accounts for the 35-75% of matrix total weight;Help burning
The addition of agent is the 0-25% of aggregate and matrix total weight, and additional bonding agent, addition is aggregate and matrix total weight
1-10%。
A kind of alumina content of aluminium chromium matter disperse breathable composite is 20-100wt%, and chromic oxide content is
0-20wt%, silica content 0-10wt%.
The alumina content of the spherical granular material is 75-100wt%, chromic oxide content 0-16wt%, silica
Content is 0-9wt%.
The plain particles material is fused alumina or sintered alumina or aluminium chromium particulate material.
The sintering aid is commercially available aluminium silicon systems raw material.
The bonding agent is paper pulp or phosphoric acid solution.
A kind of preparation method of aluminium chromium matter disperse breathable composite is：
By aggregate in sand mixer after mixing, the bonding agent of 2/3 amount is added, then mixing fine powders and sintering aid is added in mixing, mix
It is even, it is eventually adding remaining bonding agent, then about mix 10-20 minutes, through ageing mixture, is pressed into green compact, it is dry, in 1300-1800
DEG C firing, obtain this aluminium chromium matter disperse breathable composite.
The present invention uses spheric granules for raw material, the characteristics of using its spheroid form, is stayed between spherical and spherical section
Larger gap is gone out, to reach the higher porosity, so that final products has been reached the gas permeability required by operating mode, together
When, the present invention utilizes the high temperature solid-phase sintering principle of material, by adding the measures such as sintering aid, since aluminium oxide and chromium oxide exist
Unlimited solid solution is generated under high temperature, the present invention is introduced into further through by small amounts chromium in corundum matrix, both can guarantee ventilative
The erosion resisting and permeability resistance of composite material, and can guarantee its good gas permeability and whipping performance, the present invention is at high temperature
When reason, Ceramic bond is formed between fine powder and particle, and play the role of acceleration of sintering, so that material is keeping higher gas
In the case of porosity and air permeability, higher intensity is maintained, while also compensating for all spheric granules of aggregate, it is caused
The lower defect of intensity, to improve the service life of dispersive air brick composite material.
The beneficial effects of the invention are as follows：
The present invention by inciting somebody to action common irregular cuboid particle by the basis of existing ventilated element technology of preparing, being changed
For spheric granules, a kind of novel diffusion-type gas permeable material is made, compared with existing ventilated element：
1, the obtained breathable composite of the present invention, its permeability is stablized compared with former ventilated element, easily operated.
2, the present invention with it is simple for process, with the higher porosity, air permeability, higher intensity, the performance of long lifespan.
3, novel ventilated element produced by the present invention, more disclosure satisfy that the requirement of nonferrous smelting ventilated element, be coloured
Smelting provides a new selection with air blowing with refractory material.
4, performance indicator of the invention is：The porosity 25.4%, bulk density 2.63g/cm3, compressive resistance 85.7MPa, thoroughly
Manner 5.5m2×10-11。
Specific implementation mode：
Summary technological achievement only expresses embodiments of the present invention, the description thereof is more specific and detailed, but can not therefore and
It is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for those of ordinary skill in the art, not taking off
Under the premise of present inventive concept, various modifications and improvements can be made, these are all within the scope of protection of the present invention.
Can be with invention is further described in detail with reference to following embodiment, but the invention is not limited in these to implement
Example.
Embodiment 1：
A kind of aluminium chromium matter disperse breathable composite includes aggregate, matrix and sintering aid, and the shape of aggregate is spheric granules and general
Logical particle, the addition of spheric granules account for the 100% of aggregate total weight；The addition of plain particles accounts for the 0% of aggregate total weight；Bone
Parts by weight are added in material：75 parts, matrix is added parts by weight and is：25 parts, matrix includes chromium oxide fine powder, aluminum oxide fine powder；
Chromium oxide fine powder addition accounts for the 25% of matrix total weight, and aluminum oxide fine powder addition accounts for the 75% of matrix total weight;Sintering aid
Addition is 25 % of aggregate and matrix total weight, and additional bonding agent, addition is 10 % of aggregate and matrix total weight.
A kind of preparation method of aluminium chromium matter disperse breathable composite is：By aggregate in sand mixer after mixing, it is added 2/3
Then the bonding agent of amount, mixing are added mixing fine powders and sintering aid, mixing, are eventually adding remaining bonding agent, then about mix
10-20 minutes, through ageing mixture, green compact are pressed into, it is dry, it is burnt at 1300-1800 DEG C, it is ventilative multiple to obtain this aluminium chromium matter disperse
Condensation material.
Embodiment 2：
A kind of aluminium chromium matter disperse breathable composite includes aggregate, matrix and sintering aid, and the shape of aggregate is spheric granules and general
Logical particle, the addition of spheric granules account for the 35% of aggregate total weight；The addition of plain particles accounts for the 65% of aggregate total weight；Bone
Parts by weight are added in material：97 parts, matrix is added parts by weight and is：3 parts, matrix includes chromium oxide fine powder, aluminum oxide fine powder；
Chromium oxide fine powder addition accounts for the 65% of matrix total weight, and aluminum oxide fine powder addition accounts for the 35% of matrix total weight;Sintering aid
Addition is 0 % of aggregate and matrix total weight, and additional bonding agent, addition is 1 % of aggregate and matrix total weight.
A kind of preparation method of aluminium chromium matter disperse breathable composite is：By aggregate in sand mixer after mixing, it is added 2/3
Then the bonding agent of amount, mixing are added mixing fine powders and sintering aid, mixing, are eventually adding remaining bonding agent, then about mix
10-20 minutes, through ageing mixture, green compact are pressed into, it is dry, it is burnt at 1300-1800 DEG C, it is ventilative multiple to obtain this aluminium chromium matter disperse
Condensation material.
The performance of embodiment 1-2 and comparative example resulting product is as shown in the table.Apparent porosity, bulk density, permeability,
It presses relative national standards and carries out performance detection.
Claims (6)
1. a kind of aluminium chromium matter disperse breathable composite, it is characterised in that：Including aggregate, matrix and sintering aid, the shape of aggregate
For spheric granules and plain particles, the addition of spheric granules accounts for the 35-100% of aggregate total weight；The addition of plain particles accounts for
The 0-65% of aggregate total weight；Parts by weight are added in aggregate：75 parts -97 parts, matrix is added parts by weight and is：3 parts -25 parts, base
Matter includes chromium oxide fine powder, aluminum oxide fine powder；Chromium oxide fine powder addition accounts for the 25-65% of matrix total weight, and aluminum oxide fine powder adds
Enter the 35-75% that amount accounts for matrix total weight;The addition of sintering aid be aggregate and matrix total weight 0-25%, additional bonding agent,
Addition is the 1-10% of aggregate and matrix total weight.
2. a kind of aluminium chromium matter disperse breathable composite according to claim 1, it is characterised in that：Alumina content is
20-100wt%, chromic oxide content 0-20wt%, silica content 0-10wt%.
3. a kind of aluminium chromium matter disperse breathable composite according to claim 1, it is characterised in that：Spherical granular material
Alumina content is 75-100wt%, chromic oxide content 0-16wt%, silica content 0-9wt%.
4. a kind of aluminium chromium matter disperse breathable composite according to claim 1, it is characterised in that：Plain particles material is
Fused alumina or sintered alumina or aluminium chromium particulate material.
5. a kind of preparation method of aluminium chromium matter disperse breathable composite according to claim 1, it is characterised in that：By bone
Expect in sand mixer after mixing, the bonding agent of 2/3 amount of addition, mixing, then addition mixing fine powders and sintering aid, mixing, finally
Remaining bonding agent is added, then about mixes 10-20 minutes, through ageing mixture, is pressed into green compact, it is dry, it is burnt at 1300-1800 DEG C,
Obtain this aluminium chromium matter disperse breathable composite.
6. a kind of aluminium chromium matter disperse breathable composite according to claim 1, it is characterised in that：Performance indicator is：Gas
Porosity 25.4%, bulk density 2.63g/cm3, compressive resistance 85.7MPa, air permeability 5.5m2×10-11。
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| CN201810566838.5A CN108530043A (en) | 2018-06-05 | 2018-06-05 | A kind of aluminium chromium matter disperse breathable composite and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321305A (en) * | 2020-11-06 | 2021-02-05 | 陈晓林 | Multi-bubble ventilating element for refining steel ladle |
| CN117430410A (en) * | 2023-12-20 | 2024-01-23 | 中钢洛耐科技股份有限公司 | Ceramic-combined refractory material for red mud recycling tap hole and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1801102A3 (en) * | 1990-04-24 | 1993-03-07 | Boctoчhый Haучho-Иccлeдobateльckий И Пpoekthый Иhctиtуt Oгheупophoй Пpomышлehhoctи | Heat-insulating light-weight refractory material |
| CN101948316A (en) * | 2010-09-30 | 2011-01-19 | 中材高新材料股份有限公司 | Preparation method of ceramic filtration supporter |
| CN103896611A (en) * | 2014-03-14 | 2014-07-02 | 濮阳濮耐高温材料（集团）股份有限公司 | Air brick with high blowing through rate and manufacturing method thereof |
| CN106380214A (en) * | 2016-08-31 | 2017-02-08 | 长兴科特碳化硅有限公司 | Composite diffusion air-permeable brick for ladles, and production method thereof |
| CN107382357A (en) * | 2017-06-22 | 2017-11-24 | 通达耐火技术股份有限公司 | A kind of ladle bottom blowing composite air bricks disperse material and preparation method thereof |
-
2018
- 2018-06-05 CN CN201810566838.5A patent/CN108530043A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1801102A3 (en) * | 1990-04-24 | 1993-03-07 | Boctoчhый Haучho-Иccлeдobateльckий И Пpoekthый Иhctиtуt Oгheупophoй Пpomышлehhoctи | Heat-insulating light-weight refractory material |
| CN101948316A (en) * | 2010-09-30 | 2011-01-19 | 中材高新材料股份有限公司 | Preparation method of ceramic filtration supporter |
| CN103896611A (en) * | 2014-03-14 | 2014-07-02 | 濮阳濮耐高温材料（集团）股份有限公司 | Air brick with high blowing through rate and manufacturing method thereof |
| CN106380214A (en) * | 2016-08-31 | 2017-02-08 | 长兴科特碳化硅有限公司 | Composite diffusion air-permeable brick for ladles, and production method thereof |
| CN107382357A (en) * | 2017-06-22 | 2017-11-24 | 通达耐火技术股份有限公司 | A kind of ladle bottom blowing composite air bricks disperse material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈留根等: "电炉文摘WJ85640~85659", 《电炉》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321305A (en) * | 2020-11-06 | 2021-02-05 | 陈晓林 | Multi-bubble ventilating element for refining steel ladle |
| CN112321305B (en) * | 2020-11-06 | 2022-06-03 | 营口四通高温新材料科技有限公司 | Multi-bubble ventilating element for refining steel ladle |
| CN117430410A (en) * | 2023-12-20 | 2024-01-23 | 中钢洛耐科技股份有限公司 | Ceramic-combined refractory material for red mud recycling tap hole and preparation method and application thereof |
| CN117430410B (en) * | 2023-12-20 | 2024-03-12 | 中钢洛耐科技股份有限公司 | Ceramic-combined refractory material for red mud recycling tap hole and preparation method and application thereof |
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Address after: 471039 No. 1, Xiyuan Road, Jianxi District, Henan, Luoyang Applicant after: Sinosteel luonai Technology Co., Ltd Address before: 471039 No. 1, Xiyuan Road, Jianxi District, Henan, Luoyang Applicant before: SINOSTEEL REFRACTORY Co.,Ltd. |
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Application publication date: 20180914 |