CN105084916B - A kind of anticorrosive magnesium-aluminium fire resistant materials and preparation method thereof - Google Patents
A kind of anticorrosive magnesium-aluminium fire resistant materials and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 35
- GANNOFFDYMSBSZ-UHFFFAOYSA-N [AlH3].[Mg] Chemical compound [AlH3].[Mg] GANNOFFDYMSBSZ-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 35
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011777 magnesium Substances 0.000 claims abstract description 22
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 22
- -1 magnesium aluminate Chemical class 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
- 239000007767 bonding agent Substances 0.000 claims abstract description 13
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 11
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 14
- 239000003513 alkali Substances 0.000 claims description 10
- 229910052582 BN Inorganic materials 0.000 claims description 9
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 9
- 239000005913 Maltodextrin Substances 0.000 claims description 9
- 229920002774 Maltodextrin Polymers 0.000 claims description 9
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 9
- 229940035034 maltodextrin Drugs 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000002585 base Substances 0.000 claims description 7
- 229920005610 lignin Polymers 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000001351 cycling effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- GXCLVBGFBYZDAG-UHFFFAOYSA-N N-[2-(1H-indol-3-yl)ethyl]-N-methylprop-2-en-1-amine Chemical compound CN(CCC1=CNC2=C1C=CC=C2)CC=C GXCLVBGFBYZDAG-UHFFFAOYSA-N 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 10
- 238000005245 sintering Methods 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 22
- 239000000377 silicon dioxide Substances 0.000 description 10
- 229910001051 Magnalium Inorganic materials 0.000 description 9
- 239000000843 powder Substances 0.000 description 9
- 239000011819 refractory material Substances 0.000 description 9
- 239000011449 brick Substances 0.000 description 7
- 239000004575 stone Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241001504664 Crossocheilus latius Species 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- 208000035126 Facies Diseases 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910003023 Mg-Al Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to a kind of anticorrosive magnesium-aluminium fire resistant materials and preparation method thereof, the anticorrosive magnesium-aluminium fire resistant materials add auxiliary additive, nano magnesia, zirconium oxide, bonding agent and nano aluminium oxide and are made using the magnesium aluminate spinel of different-grain diameter as main material.The product of the present invention has institutional framework evenly, improves the intensity and thermal shock resistance of product, and the granularity of nano zine oxide is tiny, can fill fine pores, reduces the porosity of product, improves bulk density；Refractoriness is high, erosion-resisting characteristics is excellent, thermal shock resistance is good, and sintering range is wide.
Description
Technical field
The invention belongs to technical field of refractory materials, and in particular to a kind of refractoriness is high, erosion-resisting characteristics is excellent, anti-thermal shock
Performance is good, wide anticorrosive magnesium-aluminium fire resistant materials of sintering range and preparation method thereof.
Background technology
With the growing tension of the energy, development of the various countries to hot industry energy-saving material, production and using pay attention to day by day,
High temperature kiln is needed largely using the refractory material with excellent properties or specialized character.Such as in order to increase the service life and improve
Heat-exchange capacity, regenerator chamber of glass kiln are needed with excellent corrosion resistance, creep resistance and with special shape size
Checker.Further, the superstructure of oxy-fuel combustion glass melting furnace is also required to use with good anti-erosion, creep resistance, middle
The spill refractory material of filling with insulation material.
Chinese patent publication No. CN102557684A, date of publication on July 11st, 2012, entitled silica brick for coke oven are described
Silica brick includes raw material and auxiliary material, is represented with weight proportion, silica coarse powder 200-500 parts in composition of raw materials, powder 330-380 in silica
Part, silica fine powder 80-130 parts, as residual silica brick 80-120 parts of chamotte powder, auxiliary material includes accounting for the mineralising of raw material gross weight 1.2%
Agent, 8% milk of lime and 1% paper pulp, mineralizer by manganese dioxide content >=25% manganese powder；The iron of ferrous oxide content >=65%
Phosphorus powder presses 1:1 ratio mixes；Using powder, silica fine powder and the residual silica brick addition as chamotte powder in silica coarse powder, silica
In wet stone roller, mineralizer dry-mixed 4-5 minutes are added, then add milk of lime, after rolling 10-15 minutes, add paper pulp, be kneaded
It is uniform to pug, roll, be molded base.It is disadvantageous in that service life is low, consumption is high, and kind little waste is big.
The content of the invention
It is an object of the invention to existing refractory material service life is low, consumption is high in order to solve, kind little waste is big
Defect and provide that a kind of refractoriness is high, erosion-resisting characteristics is excellent, thermal shock resistance is good, the wide anticorrosive magnesium-aluminium of sintering range
Fire resistant materials.
Another object of the present invention is to provide for the preparation method of the refractory material.
To achieve these goals, the present invention uses following technical scheme：
A kind of anticorrosive magnesium-aluminium fire resistant materials, the anticorrosive magnesium-aluminium fire resistant materials are brilliant with the magnalium point of different-grain diameter
Stone is main material, adds auxiliary additive, nano magnesia, zirconium oxide, bonding agent and nano aluminium oxide and is made.In this technology
In scheme, bauxite base sintering magnesium aluminate spinel uses Al203The high-quality alumina and content of MgO more than 95% of content more than 76%
High-quality light-burning magnesium powder, by multistage homogenizing process, formed in ultra-high-temperature tunnel kiln through 1800 °C of high temperature above sintering, volume is close
Degree is big, and mineral facies content is high, and grain development is good, even structure, steady quality.Magnesium aluminate spinel has good anti-erosion,
Burn into peel-ability is strong, and slag resistance is good, abrasion resistance, good thermal shock stability, the performance characteristics such as high temperature resistant, is production water
The desirable feedstock of the refractory products such as mud rotary kiln height temperate zone Mg-Al spinel brick, ladle brick, pouring materialfor steel ladle.With good
Corrosion resistance, abrasion resistance, good thermal shock stability.Its most important purposes：One is that instead of magnesia-chrome sand manufacture magnalium point
Spar brick is used for cement rotary kiln, not only avoids chromium public hazards, and have good resistance to flaking；Second, for making ladle
Castable, greatly improve the corrosion resistance of steel plate lining.
Preferably, the particle diameter of magnesium aluminate spinel be respectively 0.35-0.88mm, 0.012-0.3mm, 0.0125-1 μm with
1.75-10nm。
Preferably, the mass fraction content of each raw material of anticorrosive magnesium-aluminium fire resistant materials is respectively：0.35-
0.88mm magnesium aluminate spinel 60-75 parts, 0.012-0.3mm magnesium aluminate spinel 35-45 parts, 0.0125-1 μm of magnalium point are brilliant
Stone 30-35 parts, 1.75-10nm magnesium aluminate spinel 10-15 parts, auxiliary additive 5-9 parts, nano magnesia 1-4 parts, zirconium oxide
5-10 parts, bonding agent 3-7 parts and nano aluminium oxide 2-6 parts.
Preferably, auxiliary additive is the mixture of diatom ooze, boron nitride, glass microballoon and nano zine oxide, diatom
Mud, boron nitride, the mass ratio of glass microballoon and nano zine oxide are 5:3:4:7.In the technical program, glass microballoon granularity is closed
Suitable, good fluidity, decentralization is high, adds glass microballoon, refractory material internal height can be made dispersed, acceleration of sintering, and
With institutional framework evenly, the intensity and thermal shock resistance of product are improved, the granularity of nano zine oxide is tiny, can fill
Fine pores, the porosity of product is reduced, improve bulk density.The addition of diatom ooze may be such that nano aluminium oxide and and nano oxygen
Change magnesium change Viability nano aluminium oxide with and nano magnesia, make its performance more prominent.
Preferably, bonding agent is maltodextrin, disodium hydrogen phosphate, the mixture of alkali lignin, maltodextrin, phosphoric acid hydrogen
Disodium, the mass ratio of alkali lignin are 3:1:2.In the technical program, magnesium aluminate spinel typically uses silicon ash or pure calcium aluminate
Cement is as bonding agent, but the silica in the calcium oxide or silicon ash in cement can have a strong impact on the performance of material, and originally
Invention, as bonding agent, can allow magnesium aluminate spinel more preferable using the mixture of maltodextrin, disodium hydrogen phosphate and alkali lignin
With nano aluminium oxide, nano magnesia formed combine phase so that the anti-erosion of product, creep-resistant property are more preferable.
Preferably, diatom ooze adds glass microballoon and nano zine oxide after being well mixed in ethanol with boron nitride,
Ultrasonic vibration 2h in 75 DEG C of water-baths, cold cycling 5-10 time is made after drying, and cold cycling is to be incubated 2 hours at 240 DEG C, so
After be cooled at -4 DEG C and freeze 3 hours.
Preferably, maltodextrin is dissolved in into deionized water, 60-75 DEG C is heated to, disodium hydrogen phosphate is added and alkali is wooden
Element is passed through nitrogen, air velocity 4m/s.
A kind of preparation method of anticorrosive magnesium-aluminium fire resistant materials, each raw material proportioning more than weigh, blended, shaping,
Base substrate is made in maintenance, through 234-256 DEG C of drys 12-16h, then burns till through 1700-1850 DEG C, the obtained anticorrosive magnesium-aluminium of inspection process
Fire resistant materials.
Preferably, after 1700-1850 DEG C is burnt till, 1200-1350 DEG C of insulation 2h is cooled the temperature to, continues to be cooled to
600-850 DEG C of insulation 3.5h, then it is cooled to 240-280 DEG C of insulation 6h and is cooled to room temperature detection again.
Beneficial effects of the present invention,
1）The product of the present invention has institutional framework evenly, improves the intensity and thermal shock resistance of product, nano oxygen
It is tiny to change the granularity of zinc, fine pores can be filled, reduces the porosity of product, improves bulk density；
2）Inventive article refractoriness is high, erosion-resisting characteristics is excellent, thermal shock resistance is good, and sintering range is wide.
Embodiment
Below in conjunction with specific embodiment, the present invention is further explained, not to the limitation of its protection domain.
Method therefor of the present invention, refered in particular to Ru non-, be conventional meanses.
The particle diameter of magnesium aluminate spinel is respectively 0.35-0.88mm, 0.012-0.3mm, 0.0125-1 μm and 1.75-10nm.
Auxiliary additive is the mixture of diatom ooze, boron nitride, glass microballoon and nano zine oxide, diatom ooze, boron nitride,
The mass ratio of glass microballoon and nano zine oxide is 5:3:4:7.Diatom ooze adds glass after being well mixed in ethanol with boron nitride
Glass microballon and nano zine oxide, the ultrasonic vibration 2h in 75 DEG C of water-baths, cold cycling 5-10 time is obtained after drying, and cold cycling is
2 hours are incubated at 240 DEG C, is then cooled at -4 DEG C and freezes 3 hours.
Bonding agent is maltodextrin, disodium hydrogen phosphate, the mixture of alkali lignin, and maltodextrin, disodium hydrogen phosphate, alkali are wooden
The mass ratio of quality is 3:1:2.Maltodextrin is dissolved in deionized water, is heated to 60-75 DEG C, adds disodium hydrogen phosphate and alkali wood
Quality is passed through nitrogen, air velocity 4m/s.
The present invention is raw materials used to be commercially available.
Embodiment 1
The mass fraction content of each raw material of anticorrosive magnesium-aluminium fire resistant materials is respectively：0.35-0.88mm magnalium point is brilliant
60 parts of stone, 0.012-0.3mm 35 parts of magnesium aluminate spinel, 0.0125-1 μm of 30 parts of magnesium aluminate spinel, 1.75-10nm magnalium
2 parts of 10 parts of spinelle, 5 parts of auxiliary additive, 1 part of nano magnesia, 5 parts of zirconium oxide, 3 parts of bonding agent and nano aluminium oxide.
A kind of preparation method of anticorrosive magnesium-aluminium fire resistant materials, each raw material proportioning more than weigh, blended, shaping,
Base substrate is made in maintenance, through 234 DEG C of dry 12h, after 1700 DEG C are burnt till, cools the temperature to 1200 DEG C of insulation 2h, continues to be cooled to
600 DEG C of insulation 3.5h, then it is cooled to 240 DEG C of insulation 6h and is cooled to the obtained anticorrosive magnesium-aluminium fire resistant materials of room temperature detection again.
Embodiment 2
The mass fraction content of each raw material of anticorrosive magnesium-aluminium fire resistant materials is respectively：0.35-0.88mm magnalium point is brilliant
70 parts of stone, 0.012-0.3mm 40 parts of magnesium aluminate spinel, 0.0125-1 μm of 32 parts of magnesium aluminate spinel, 1.75-10nm magnalium
4 parts of 13 parts of spinelle, 7 parts of auxiliary additive, 3 parts of nano magnesia, 8 parts of zirconium oxide, 5 parts of bonding agent and nano aluminium oxide.
A kind of preparation method of anticorrosive magnesium-aluminium fire resistant materials, each raw material proportioning more than weigh, blended, shaping,
Base substrate is made in maintenance, through 243 DEG C of dry 14h, after 1800 DEG C are burnt till, cools the temperature to 1250 DEG C of insulation 2h, continues to be cooled to
750 DEG C of insulation 3.5h, then it is cooled to 255 DEG C of insulation 6h and is cooled to the obtained anticorrosive magnesium-aluminium fire resistant materials of room temperature detection again.
Embodiment 3
The mass fraction content of each raw material of anticorrosive magnesium-aluminium fire resistant materials is respectively：0.35-0.88mm magnalium point is brilliant
75 parts of stone, 0.012-0.3mm 45 parts of magnesium aluminate spinel, 0.0125-1 μm of 35 parts of magnesium aluminate spinel, 1.75-10nm magnalium
6 parts of 15 parts of spinelle, 9 parts of auxiliary additive, 4 parts of nano magnesia, 10 parts of zirconium oxide, 7 parts of bonding agent and nano aluminium oxide.
A kind of preparation method of anticorrosive magnesium-aluminium fire resistant materials, each raw material proportioning more than weigh, blended, shaping,
Base substrate is made in maintenance, through 256 DEG C of dry 16h, after 1850 DEG C are burnt till, cools the temperature to 1350 DEG C of insulation 2h, continues to be cooled to
850 DEG C of insulation 3.5h, then it is cooled to 280 DEG C of insulation 6h and is cooled to the obtained anticorrosive magnesium-aluminium fire resistant materials of room temperature detection again.
Comparative example 1, commercially available refractory material.
The performance of refractory material prepared by embodiment 1-3 and the refractory material of comparative example 1 is shown in Table 1.
Table 1, performance
| The porosity, % | Bulk density, g/ Cm3 | Compressive resistance, Mpa | Product qualification rate % | |
| Embodiment 1 | 14.3 | 2.12 | 66.5 | 96 |
| Embodiment 2 | 14.7 | 2.08 | 68.1 | 95 |
| Embodiment 3 | 15.6 | 2.21 | 63.7 | 94 |
| Comparative example 1 | 22.3 | 1.9 | 45.6 | 80 |
The product of the present invention has institutional framework evenly, improves the intensity and thermal shock resistance of product, nano oxidized
The granularity of zinc is tiny, can fill fine pores, reduces the porosity of product, improves bulk density.
Claims (5)
1. a kind of anticorrosive magnesium-aluminium fire resistant materials, it is characterised in that the anticorrosive magnesium-aluminium fire resistant materials are with different-grain diameter
Magnesium aluminate spinel be main material, add auxiliary additive, nano magnesia, zirconium oxide, bonding agent and nano aluminium oxide and make
Into；The mass fraction content of each raw material of anticorrosive magnesium-aluminium fire resistant materials is respectively：0.35-0.88mm magnesium aluminate spinel
60-75 parts, 0.012-0.3mm magnesium aluminate spinel 35-45 parts, 0.0125-1 μm magnesium aluminate spinel 30-35 parts, 1.75-
10nm magnesium aluminate spinel 10-15 parts, auxiliary additive 5-9 parts, nano magnesia 1-4 parts, zirconium oxide 5-10 parts, bonding agent 3-
7 parts and nano aluminium oxide 2-6 parts；Auxiliary additive is the mixture of diatom ooze, boron nitride, glass microballoon and nano zine oxide,
Diatom ooze, boron nitride, the mass ratio of glass microballoon and nano zine oxide are 5:3:4:7.
2. a kind of anticorrosive magnesium-aluminium fire resistant materials according to claim 1, it is characterised in that bonding agent is pasted for malt
Essence, disodium hydrogen phosphate, the mixture of alkali lignin, maltodextrin, disodium hydrogen phosphate, the mass ratio of alkali lignin are 3:1:2.
3. a kind of anticorrosive magnesium-aluminium fire resistant materials according to claim 1, it is characterised in that diatom ooze exists with boron nitride
Glass microballoon and nano zine oxide are added after being well mixed in ethanol, the ultrasonic vibration 2h in 75 DEG C of water-baths is cold and hot after drying to follow
Ring 5-10 times is made, then cold cycling is cooled at -4 DEG C and freezed 3 hours to be incubated 2 hours at 240 DEG C.
4. a kind of anticorrosive magnesium-aluminium fire resistant materials according to claim 2, it is characterised in that be dissolved in maltodextrin
Ionized water, 60-75 DEG C is heated to, adds disodium hydrogen phosphate and be passed through nitrogen, air velocity 4m/s with alkali lignin.
5. a kind of preparation method of anticorrosive magnesium-aluminium fire resistant materials as claimed in claim 1, it is characterised in that each raw material is pressed
Proportioning weighs above, blended, shaping, the obtained base substrate of maintenance, through 234-256 DEG C of dry 12-16h, then through 1700-1850 DEG C of burning
Into cooling the temperature to 1200-1350 DEG C of insulation 2h, continue to be cooled to 600-850 DEG C of insulation 3.5h, be then cooled to 240-280
DEG C insulation 6h is cooled to room temperature detection again, and anticorrosive magnesium-aluminium fire resistant materials are made.
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| CN108424124B (en) * | 2018-04-08 | 2020-12-08 | 凤阳爱尔思轻合金精密成型有限公司 | Spinel reinforced magnesium oxide base crucible synthesized in situ by magnesium oxide whisker and preparation method thereof |
| CN111056833B (en) * | 2019-12-03 | 2022-07-05 | 宜兴市耐火材料有限公司 | Nitride-bonded spinel sliding plate and preparation process thereof |
| CN111763091A (en) * | 2020-06-17 | 2020-10-13 | 林国强 | High-thermal-shock wear-resistant coating and preparation method thereof |
| CN112608160B (en) * | 2020-12-31 | 2022-11-11 | 长兴兴鹰新型耐火建材有限公司 | High-strength wear-resistant castable special for cement kiln flashboard |
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| CN103601506A (en) * | 2013-10-09 | 2014-02-26 | 瑞泰科技股份有限公司 | Low-porosity magnesium aluminate spinel-zirconia composite sintered refractory material and production technology thereof |
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| WO2010095637A1 (en) * | 2009-02-19 | 2010-08-26 | 黒崎播磨株式会社 | Unburned alumina-carbon brick and kiln facility utilizing same |
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| CN103601506A (en) * | 2013-10-09 | 2014-02-26 | 瑞泰科技股份有限公司 | Low-porosity magnesium aluminate spinel-zirconia composite sintered refractory material and production technology thereof |
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