CN103011865B - Ventilated brick and preparation method thereof - Google Patents
Ventilated brick and preparation method thereof Download PDFInfo
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- CN103011865B CN103011865B CN 201210571587 CN201210571587A CN103011865B CN 103011865 B CN103011865 B CN 103011865B CN 201210571587 CN201210571587 CN 201210571587 CN 201210571587 A CN201210571587 A CN 201210571587A CN 103011865 B CN103011865 B CN 103011865B
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- 239000011449 brick Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004411 aluminium Substances 0.000 claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- 229910052596 spinel Inorganic materials 0.000 claims abstract description 22
- 239000011029 spinel Substances 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 15
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 14
- 239000010431 corundum Substances 0.000 claims abstract description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 12
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 11
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 11
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 11
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 11
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- -1 polypropylene Polymers 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 34
- 235000019580 granularity Nutrition 0.000 claims description 26
- 238000010792 warming Methods 0.000 claims description 21
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 20
- 239000003595 mist Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000011343 solid material Substances 0.000 claims description 7
- 239000011268 mixed slurry Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 229940117975 chromium trioxide Drugs 0.000 abstract 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 1
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 32
- 239000007789 gas Substances 0.000 description 32
- 239000000395 magnesium oxide Substances 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910004298 SiO 2 Inorganic materials 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 241000317410 Arisaema dracontium Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
- Ceramic Products (AREA)
Abstract
The invention relates to a ventilated brick and a preparation method thereof. The ventilated brick is composed of the following raw materials: compact fused corundum, sintered tabular corundum, sintered spinel, fused magnesite, active alumina micro powder, industrial chromium trioxide, aluminium-enriched spinel micro powder, pure calcium aluminate cement, SM water reducing agent, SN-2 water reducing agent, sprayed aluminium powder and polypropylene fibre. The invention further relates to the preparation method of the ventilated brick. The ventilated brick prepared by the invention has the advantages of being strong in anti-pressure ability, long in service life, high in high-temperature resistant strength, good in anti-residue permeability and melting loss resistant peeling property, low in sintering temperature, low in energy consumption, clean, free from pollution, and simple and environment-friendly in preparation process; one ventilated brick can be used for above 90 times; and the sintering temperature is only 1200-1550 DEG C.
Description
Technical field:
The present invention relates to a kind of gas permeable brick and preparation method thereof, belong to the technical field of refractory materials.
Background technology:
20 end of the centurys, the technology of removing impurity in the molten steel that field of iron and steel smelting grows up, be that ladle bottom is installed gas permeable brick air blowing technology, its principle is at ladle bottom gas permeable brick to be installed, be blown into oxygen or other gas from the gas permeable brick bottom to ladle, on the one hand the impurity such as carbon in the molten steel further reduced, the gas that is blown on the other hand flows in molten steel from bottom to top, molten steel is stirred, thereby improve the efficient of smelting.Gas permeable brick plays keying action in this process, it mainly is prepared from by refractory materials, must have high ventilation performance, higher high temperature strength and anti-slag penetrating power.
Chinese patent literature CN100564309C(200710129742.4) a kind of tundish magnesia gas permeable brick of diffuse type is disclosed, its by magnesia particle, magnesia powder, alumina powder and wedding agent according to required weight a part ratio form, through mixing, moulding, drying, technology such as burning till and make; The tundish magnesia gas permeable brick even air hole distribution of diffuse type, good permeability, resistance to fouling and scour resistance are strong.But the general shortcoming that exists not anti-slag infiltration and easy melting loss to peel off of existing gas permeable brick, work-ing life is shorter, and sintering temperature is higher, and production energy consumption is bigger.
Summary of the invention:
At the deficiencies in the prior art, the invention provides a kind of gas permeable brick and preparation method thereof.
Technical scheme of the present invention is as follows:
A kind of gas permeable brick, parts by weight of raw materials is composed as follows:
(1) fine and close fused corundom: 14 ~ 18 parts of particle size range 8 ~ 5mm
(2) sintering plate corundum: 28 ~ 32 parts of particle size range 6 ~ 3mm
15 ~ 21 parts of particle size range 3 ~ 1mm
15 ~ 21 parts of particle size range 1 ~ 0mm
6 ~ 10 parts in 100 orders
(3) sintering spinel: 2 ~ 6 parts in 100 orders
(4) electrosmelted magnesite clinker: 0.5 ~ 2 part in 200 orders
(5) activated alumina micro mist: 3 ~ 6 parts of granularities≤4.5 μ m
(6) industrial chromium sesquioxide: 2 ~ 4 parts of granularities≤5 μ m
(7) aluminium riched spinel micro mist: 9 ~ 15 parts of granularities≤4.5 μ m
(8) pure calcium aluminate cement: 2 ~ 4 parts
(9) SM water reducer: 0.16 ~ 0.25 part
SN-2 water reducer: 0.03 ~ 0.06 part
(10) spraying aluminium powder: 0.025 part in 60-150 order
(11) polypropylene fiber:
0.06 ~ 0.07 part.
According to the present invention, preferred, described gas permeable brick, parts by weight of raw materials is composed as follows:
(1) fine and close fused corundom: 15 ~ 17 parts of particle size range 8 ~ 5mm
(2) sintering plate corundum: 28 ~ 30 parts of particle size range 6 ~ 3mm
16 ~ 19 parts of particle size range 3 ~ 1mm
16 ~ 21 parts of particle size range 1 ~ 0mm
7 ~ 9 parts in 100 orders
(3) sintering spinel: 4 ~ 6 parts in 100 orders
(4) electrosmelted magnesite clinker: 1 ~ 1.5 part in 200 orders
(5) activated alumina micro mist: 4 ~ 5 parts of granularities≤4.5 μ m
(6) industrial chromium sesquioxide: 2 ~ 4 parts of granularities≤5 μ m
(7) aluminium riched spinel micro mist: 11 ~ 13 parts of granularities≤4.5 μ m
(8) pure calcium aluminate cement: 2 ~ 4 parts
(9) SM water reducer: 0.16 ~ 0.25 part
SN-2 water reducer: 0.03 ~ 0.06 part
(10) spraying aluminium powder: 0.025 part in 60-150 order
(11) polypropylene fiber:
0.06 ~ 0.07 part.
According to the present invention, preferred, described gas permeable brick, parts by weight of raw materials is composed as follows:
(1) fine and close fused corundom: 15 parts of particle size range 8 ~ 5mm
(2) sintering plate corundum: 28 parts of particle size range 6 ~ 3mm
19 parts of particle size range 3 ~ 1mm
21 parts of particle size range 1 ~ 0mm
7.5 parts in 100 orders
(3) sintering spinel: 6 parts in 100 orders
(4) electrosmelted magnesite clinker: 1 part in 200 orders
(5) activated alumina micro mist: 4 parts of granularities≤4.5 μ m
(6) industrial chromium sesquioxide: 4 parts of granularities≤5 μ m
(7) aluminium riched spinel micro mist: 12 parts of granularities≤4.5 μ m
(8) pure calcium aluminate cement: 2.5 parts
(9) SM water reducer: 0.2 part
SN-2 water reducer: 0.04 part
(10) spraying aluminium powder: 0.025 part in 60-150 order
(11) polypropylene fiber:
0.06 part.
According to the present invention, preferred, described fine and close fused corundom component target is: Al
2O
3〉=98.8%, Na
2O+K
2O≤0.3%, CaO+SiO
2+ MgO+Fe
2O
3≤ 0.1%;
Described sintering plate corundum component target is: Al
2O
3〉=99.0%, Na
2O≤0.3%, SiO
2≤ 0.1%, Fe
2O
3≤ 0.1%;
Described sintering spinel component target is: Al
2O
3+ MgO 〉=97.5%MgO:24.5 ~ 27%, Na
2O+K
2O≤0.3%, CaO+SiO
2+ Fe
2O
3≤ 1%;
Described electrosmelted magnesite clinker component target is: MgO 〉=97.%, SiO
2≤ 1.2%, CaO≤1.2%;
Described activated alumina micro mist component target is: Al
2O
3〉=99.0%, Na
2O+K
2O≤0.3%, SiO
2≤ 0.1%, Fe
2O
3≤ 0.1%;
Described industrial chromium sesquioxide component target is: Cr
2O
3〉=97.0%, SiO
2≤ 0.5%, Fe
2O
3≤ 0.3%;
Described aluminium riched spinel micro mist component target is: Al
2O
3+ MgO 〉=97.5%MgO:8 ~ 12%, Na
2O+K
2O≤0.3%;
Described pure calcium aluminate cement component target is: Al
2O
3〉=70%, CaO≤28%, SiO
2+ Na
2O+Fe
2O
3≤ 2%, refractoriness 〉=1750 ℃ are solidified index and are: initial set 〉=1.5h, final set≤6h.
According to the present invention, preferred, the water-reducing rate of described SM water reducer 〉=20%, the water-reducing rate of described SN-2 water reducer 〉=16%.
According to the present invention, preferred, described spraying aluminium powder: Al 〉=98%, granularity 60-150 mesh sieve surplus≤10%.
The preparation method of gas permeable brick of the present invention, step is as follows:
(1) component of above-mentioned weight part is mixed solid materials;
(2) water of adding solid materials total mass 4% ~ 8% mixes, and gets mixed slurry;
(3) mixed slurry is added in the mould after the vibratory compaction, leave standstill 4 ~ 5h;
(4) demoulding was left standstill maintenance after 3 ~ 4 days, 150 ~ 550 ℃ of oven dry;
Behind (5) 1200 ~ 1550 ℃ of sintering 45 ~ 48h, naturally cool to room temperature, namely.
Mould in the step of the present invention (3) is this area conventional equipment, and preferred mould is steel casting, circular cone structure; The mould inboard, upright is provided with the PVC thin slice behind 0.16 ~ 0.19mm, and the vertical length of thin slice is identical with mould.The burning in gas permeable brick oven dry and calcination process of PVC thin slice disappears, and forms the tiny crack of vertical direction around gas permeable brick, more is conducive to be blown into gas in ladle.
According to the present invention, preferred, curing condition is in the described step (4): room temperature, relative air humidity are 70 ~ 90%.
According to the present invention, preferred, drying mode is in the described step (4):
After being warming up to 150 ℃ from room temperature with arbitrary velocity; Speed with 15 ℃/h is warming up to 180 ℃, insulation 5h; Speed with 12 ℃/h is warming up to 320 ℃, insulation 5h; Speed with 20 ℃/h is warming up to 550 ℃, insulation 5h; Speed with 10 ℃/h is cooled to 120 ℃.
According to the present invention, preferred, sintering processing is in the described step (5):
Be warming up to 1200 ℃ from room temperature with the speed of 200 ~ 300 ℃/h; Speed with 40 ~ 50 ℃/h is warming up to 1450 ℃, insulation 3h; Speed with 80 ~ 100 ℃/h is warming up to 1550 ℃, insulation 5h; Speed with 80 ~ 100 ℃/h is cooled to 1200 ℃; Naturally cool to 120 ℃ with furnace temperature.
The present invention has following beneficial effect:
1, gas permeable brick of the present invention, anti-pressure ability is strong, and compressive strength can reach more than the 40Mpa; Long service life, a gas permeable brick can use more than 90 times.
2, gas permeable brick high temperature strength of the present invention is big, and anti-slag infiltration and anti-melting loss spalling resistance are excellent.
3, the sintering temperature of gas permeable brick of the present invention is low, and only 1200～1550 ℃, energy consumption is little.
4, gas permeable brick cleanliness without any pollution of the present invention, preparation technology is simple, environmental protection.
5, the gas permeable brick pore mean diameter that reduces along with the sintering plate corundum particle diameter reduces, and apparent porosity increases, and compressive strength increases; The present invention uses the sintering plate corundum of different-grain diameter to prepare gas permeable brick, makes the gas permeable brick apparent porosity of preparation and compressive strength reach optimum.
Embodiment:
The present invention will be further described below by specific embodiment, but do not limit thus.
Embodiment is raw materials used to be conventional commercial product.Wherein,
Fine and close fused corundom: Al
2O
3〉=98.8%, Na
2O+K
2O≤0.3%, CaO+SiO
2+ MgO+Fe
2O
3≤ 0.1%,
Apparent porosity＜4%, fused corundom limited liability company in the Sanmenxia Gorge is on sale.
Sintering plate corundum: Al
2O
3〉=99.0%, Na
2O≤0.3%, SiO
2≤ 0.1%, Fe
2O
3≤ 0.1%, volume density 〉=3.6g/cm
3, the U.S. aluminium in Qingdao company limited is on sale.
Sintering spinel: Al
2O
3+ MgO 〉=97.5%MgO:24.5 ~ 27%, Na
2O+K
2O≤0.3%,
CaO+SiO
2+ Fe
2O
3≤ 1%, volume density=3.26g/cm
3, Kaifeng TeNai Co., Ltd is on sale.
Electrosmelted magnesite clinker: MgO 〉=97.%, SiO
2≤ 1.2%, CaO≤1.2%, volume density=3.5g/cm
3, Liaoning Xinrong Mining Group Limited is on sale.
Activated alumina micro mist: Al
2O
3〉=99.0%, Na
2O+K
2O≤0.3%, SiO
2≤ 0.1%, Fe
2O
3≤ 0.1%, the Kaifeng is on sale up to novel refractory factory.
Industry chromium sesquioxide: Cr
2O
3〉=97.0%, SiO
2≤ 0.5%, Fe
2O
3≤ 0.3%, the chemical limited liability company of the green dragon in Tianjin is on sale.
Aluminium riched spinel micro mist: Al
2O
3+ MgO 〉=97.5%MgO:8 ~ 12%, Na
2O+K
2O≤0.3%, it is on sale that ceramic industry novel material company limited is contained in Yixing City east.
Pure calcium aluminate cement: Al
2O
3〉=70%, CaO≤28%, SiO
2+ Na
2O+Fe
2O
3≤ 2%, refractoriness 〉=1750 ℃, initial set 〉=1.5h, final set≤6h, one day withstand voltage 〉=30Mpa, Lafarge aluminate (China) company is on sale.
The SM water reducer: water-reducing rate 〉=20%, Suzhou Institute of Concrete Cement Products is on sale.
The SN-2 water reducer: water-reducing rate 〉=16%, the May 4th auxiliary reagent factory in Shanghai is on sale.
Spraying aluminium powder: Al 〉=98%, granularity 60-150 mesh sieve surplus≤10%, Jiangnan Fero-alloy Factory, Jiangsu Prov is on sale.
Polypropylene fiber: fusing point≤165 ℃, petro-chemical fiber company in Liaoning is on sale.
Embodiment 1:
A kind of gas permeable brick, parts by weight of raw materials consists of:
1. fine and close fused corundom: 14 parts of particle size range 8 ~ 5mm
2. sintering plate corundum: 28 parts of particle size range 6 ~ 3mm
15 parts of particle size range 3～1mm
15 parts of particle size range 1 ~ 0mm
6 parts in 100 orders
3. sintering spinel: 2 parts in 100 orders
4. electrosmelted magnesite clinker: 0.5 part in 200 orders
5. activated alumina micro mist: 3 parts of granularities≤4.5 μ m
6. industrial chromium sesquioxide: 2 parts of granularities≤5 μ m
7. aluminium riched spinel micro mist: 9 parts of granularities≤4.5 μ m
8. pure calcium aluminate cement: 2 parts
9. SM water reducer: 0.16 part
SN-2 water reducer: 0.03 part
10. the aluminium powder of spraying: 0.025 part in 60-150 order
Preparation process is as follows:
(1) component of above-mentioned weight part is mixed solid materials;
(2) water of adding solid materials total mass 4% mixes, and gets mixed slurry;
(3) mixed slurry is added in the mould after the vibratory compaction, leave standstill 4 ~ 5h; Described mould is steel casting, circular cone structure; The mould inboard, upright is provided with the PVC thin slice behind the 0.16mm, and the vertical length of thin slice is identical with mould;
(4) demoulding is to leave standstill maintenance under 90% condition after 3 days at room temperature, relative air humidity, oven dry; Drying mode is: after being warming up to 150 ℃ from room temperature with arbitrary velocity; Speed with 15 ℃/h is warming up to 180 ℃, insulation 5h; Speed with 12 ℃/h is warming up to 320 ℃, insulation 5h; Speed with 20 ℃/h is warming up to 550 ℃, insulation 5h; Speed with 10 ℃/h is cooled to 120 ℃;
(5) 1200 ~ 1550 ℃ of sintering 45 ~ 48h, sintering processing is:
Be warming up to 1200 ℃ from room temperature with the speed of 200 ℃/h; Speed with 40 ℃/h is warming up to 1450 ℃, insulation 3h; Speed with 80 ℃/h is warming up to 1550 ℃, insulation 5h; Speed with 80 ℃/h is cooled to 1200 ℃; Naturally cool to room temperature with furnace temperature; Namely.
The gas permeable brick of present embodiment preparation, physical and chemical index is as follows: (1500 ℃ * 3h)
Embodiment 2:
A kind of gas permeable brick, parts by weight of raw materials consists of:
1. fine and close fused corundom: 18 parts of particle size range 8 ~ 5mm
2. sintering plate corundum: 32 parts of particle size range 6 ~ 3mm
21 parts of particle size range 3 ~ 1mm
21 parts of particle size range 1 ~ 0mm
10 parts in 100 orders
3. sintering spinel: 6 parts in 100 orders
4. electrosmelted magnesite clinker: 2 parts in 200 orders
5. activated alumina micro mist: 6 parts of granularities≤4.5 μ m
6. industrial chromium sesquioxide: 4 parts of granularities≤5 μ m
7. aluminium riched spinel micro mist: 15 parts of granularities≤4.5 μ m
8. pure calcium aluminate cement: 4 parts
9. SM water reducer: 0.25 part
SN-2 water reducer: 0.06 part
10. the aluminium powder of spraying: 0.025 part in 60-150 order
Preparation process is with embodiment 1, and different is the water that adds solid materials total mass 8% in the step (2).
Embodiment 3:
A kind of gas permeable brick, parts by weight of raw materials consists of:
1. fine and close fused corundom: 15 parts of particle size range 8 ~ 5mm
2. sintering plate corundum: 28 parts of particle size range 6 ~ 3mm
16 parts of particle size range 3 ~ 1mm
16 parts of particle size range 1 ~ 0mm
7 parts in 100 orders
3. sintering spinel: 4 parts in 100 orders
4. electrosmelted magnesite clinker: 1 part in 200 orders
5. activated alumina micro mist: 4 parts of granularities≤4.5 μ m
6. industrial chromium sesquioxide: 2 parts of granularities≤5 μ m
7. aluminium riched spinel micro mist: 11 parts of granularities≤4.5 μ m
8. pure calcium aluminate cement: 2 parts
9. SM water reducer: 0.16 part
SN-2 water reducer: 0.03 part
10. the aluminium powder of spraying: 0.025 part in 60-150 order
Preparation process is with embodiment 1.
Embodiment 4:
A kind of gas permeable brick, parts by weight of raw materials consists of:
1. fine and close fused corundom: 15 parts of particle size range 8 ~ 5mm
2. sintering plate corundum: 28 parts of particle size range 6 ~ 3mm
19 parts of particle size range 3 ~ 1mm
21 parts of particle size range 1 ~ 0mm
7.5 parts in 100 orders
3. sintering spinel: 6 parts in 100 orders
4. electrosmelted magnesite clinker: 1 part in 200 orders
5. activated alumina micro mist: 4 parts of granularities≤4.5 μ m
6. industrial chromium sesquioxide: 4 parts of granularities≤5 μ m
7. aluminium riched spinel micro mist: 12 parts of granularities≤4.5 μ m
8. pure calcium aluminate cement: 2.5 parts
9. SM water reducer: 0.2 part
SN-2 water reducer: 0.04 part
10. the aluminium powder of spraying: 0.025 part in 60-150 order
Polypropylene fiber:
0.06 part;
Preparation process is with embodiment 1.
Claims (4)
1. gas permeable brick is characterized in that parts by weight of raw materials is composed as follows:
(1) fine and close fused corundom: 14 ~ 15 parts of particle size range 8 ~ 5mm
(2) sintering plate corundum: 28 parts of particle size range 6 ~ 3mm
15 ~ 19 parts of particle size range 3 ~ 1mm
15 ~ 21 parts of particle size range 1 ~ 0mm
6 ~ 7.5 parts in 100 orders
(3) sintering spinel: 2 ~ 6 parts in 100 orders
(4) electrosmelted magnesite clinker: 0.5 ~ 1 part in 200 orders
(5) activated alumina micro mist: 3 ~ 4 parts of granularities≤4.5 μ m
(6) industrial chromium sesquioxide: 2 ~ 4 parts of granularities≤5 μ m
(7) aluminium riched spinel micro mist: 9 ~ 12 parts of granularities≤4.5 μ m
(8) pure calcium aluminate cement: 2 ~ 2.5 parts
(9) SM water reducer: 0.16 ~ 0.2 part
SN-2 water reducer: 0.03 ~ 0.04 part
(10) spraying aluminium powder: 0.025 part in 60-150 order
(11) polypropylene fiber:
0.06 part.
2. the preparation method of the described gas permeable brick of claim 1, step is as follows:
(1) component of above-mentioned weight part is mixed solid materials;
(2) water of adding solid materials total mass 4% ~ 8% mixes, and gets mixed slurry;
(3) mixed slurry is added in the mould after the vibratory compaction, leave standstill 4 ~ 5h; Described mould is steel casting, circular cone structure; The mould inboard, upright is provided with the PVC thin slice behind 0.16 ~ 0.19mm, and the vertical length of thin slice is identical with mould;
(4) demoulding was left standstill maintenance after 3 ~ 4 days, 150 ~ 550 ℃ of oven dry; Described curing condition is: room temperature, relative air humidity are 70 ~ 90%;
Behind (5) 1200 ~ 1550 ℃ of sintering 45 ~ 48h, naturally cool to room temperature, namely.
3. according to the preparation method of the described gas permeable brick of claim 2, it is characterized in that drying mode is in the described step (4): after being warming up to 150 ℃ from room temperature with arbitrary velocity; Speed with 15 ℃/h is warming up to 180 ℃, insulation 5h; Speed with 12 ℃/h is warming up to 320 ℃, insulation 5h; Speed with 20 ℃/h is warming up to 550 ℃, insulation 5h; Speed with 10 ℃/h is cooled to 120 ℃.
4. according to the preparation method of the described gas permeable brick of claim 3, it is characterized in that sintering processing is in the described step (5): be warming up to 1200 ℃ from room temperature with the speed of 200 ~ 300 ℃/h; Speed with 40 ~ 50 ℃/h is warming up to 1450 ℃, insulation 3h; Speed with 80 ~ 100 ℃/h is warming up to 1550 ℃, insulation 5h; Speed with 80 ~ 100 ℃/h is cooled to 1200 ℃; Naturally cool to 120 ℃ with furnace temperature.
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| CN104609870A (en) * | 2013-12-16 | 2015-05-13 | 岑溪市新建球陶瓷有限公司 | Preparation method of porous brick |
| CN103755265B (en) * | 2014-01-25 | 2015-03-25 | 浙江同舟建设管理有限公司 | Preparation method of high-strength square brick |
| CN104973868B (en) * | 2014-04-14 | 2017-08-11 | 郑州东方炉衬材料有限公司 | High-strength high-alumina light heat-insulating fire resistant brick and its production method |
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| CN107226688A (en) * | 2017-05-27 | 2017-10-03 | 武汉科技大学 | A kind of dispersive air brick and preparation method thereof |
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| CN107935571A (en) * | 2017-10-18 | 2018-04-20 | 浙江科特高温新材料有限公司 | The formula and preparation process of a kind of stainless steel smelting high-performance air brick |
| CN110272268A (en) * | 2018-03-17 | 2019-09-24 | 鞍山盛晨耐火材料有限公司 | A kind of preparation method of ladle corundum lining brick |
| CN111848195A (en) * | 2020-08-13 | 2020-10-30 | 洛阳科创新材料股份有限公司 | Aluminum-magnesium porous ceramic part for metal liquid purifier and preparation method thereof |
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