CN105084915A - Compound refractory material and preparation method thereof - Google Patents
Compound refractory material and preparation method thereof Download PDFInfo
- Publication number
- CN105084915A CN105084915A CN201510398670.8A CN201510398670A CN105084915A CN 105084915 A CN105084915 A CN 105084915A CN 201510398670 A CN201510398670 A CN 201510398670A CN 105084915 A CN105084915 A CN 105084915A
- Authority
- CN
- China
- Prior art keywords
- composite refractory
- nano
- magnesium
- aluminium spinel
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a compound refractory material and a preparation method thereof. The compound refractory material is prepared by using magnesium aluminate spinel with different grain diameters as a main raw material and adding auxiliary additives, nano-chromium oxide, a binding agent and nano-alumina. According to the compound refractory material, the strength and thermal shock resistance can be improved due to the uniform tissue structure; and micro-pores can be filled with the nano-zinc oxide due to the fine granularity, so that the porosity of the material can be reduced, and the volume density can be improved. The compound refractory material has the advantages of high refractoriness, excellent corrosion resistance, good thermal shock resistance and wide sintering temperature range.
Description
Technical field
The invention belongs to technical field of refractory materials, be specifically related to that a kind of refractoriness is high, erosion-resisting characteristics is excellent, thermal shock resistance is good, composite refractory that sintering range is wide and preparation method thereof.
Background technology
Along with the growing tension of the energy, various countries are to the development of hot industry energy-saving material, production and use pay attention to day by day, and high temperature kiln needs to use the refractory materials with excellent properties or specialized character in a large number.As in order to increase the service life and improve heat-exchange capacity, regenerator chamber of glass kiln needs the checker having excellent resistance to fouling, creep resistance and have special shape size.Further, the superstructure of oxy-fuel combustion glass melting furnace also needs use to have good anti-erosion, creep resistance, the spill refractory materials of central filler lagging material.
Chinese patent publication No. CN102557684A, date of publication on July 11st, 2012, name is called silica brick for coke oven, and described silica brick comprises stock and adjunct, represents with weight proportion, silica meal 200-500 part in composition of raw materials, powder 330-380 part in silica, silica fine powder 80-130 part, as residual silica brick 80-120 part of chamotte powder, auxiliary material comprise account for the mineralizer of raw material gross weight 1.2%, the milk of lime of 8% and 1% paper pulp, mineralizer is by the manganese powder of Manganse Dioxide content >=25%; The iron phosphorus powder of ferrous oxide content >=65% mixes in the ratio of 1:1; Powder, silica fine powder and the residual silica brick as chamotte powder in silica meal, silica added in wet stone roller, then adding mineralizer and be dry mixed 4-5 minute, then adding milk of lime, after rolling 10-15 minute, then add paper pulp, mixing even to pug, roll, shaping base.Its weak point is, work-ing life is low, it is high to consume, and kind less waste is large.
Summary of the invention
The object of the invention is in order to solve existing refractory materials work-ing life low, consume high, the defect that kind less waste is large and provide that a kind of refractoriness is high, erosion-resisting characteristics is excellent, thermal shock resistance is good, the composite refractory that sintering range is wide.
Another object of the present invention is the preparation method in order to provide this refractory materials.
To achieve these goals, the present invention is by the following technical solutions:
A kind of composite refractory, described composite refractory for main raw material with the magnesium-aluminium spinel of different-grain diameter, adds supplementary additive, nano chromium oxide, bonding agent and nano aluminium oxide and makes.In the technical program, bauxitic clay base sintering magnesium-aluminium spinel adopts Al
20
3the high-quality alumina of content more than 76% and the high-quality light-burning magnesium powder of content of MgO more than 95%, through multistage homogenizing process, form through 1800 ° of more than C high temperature sinterings in ultra-high-temperature tunnel kiln, volume density is large, and mineral facies content is high, and grain development is good, even structure, steady quality.Magnesium-aluminium spinel has good anti-erosion, and 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 the desirable feedstock of producing the refractory productss such as the thermal zone Mg-Al spinel brick of cement rotary kiln, ladle brick, Refractory Carstables for Ladles.There is good corrosion resistance, abrasion resistance, good thermal shock stability.Its topmost purposes: one is replace magnesia-chrome sand to manufacture Mg-Al spinel brick for cement rotary kiln, not only avoids chromium public hazards, and has good resistance to flaking; Two is for making Refractory Carstables for Ladles, greatly improves the corrosion resistance of steel plate lining.
As preferably, the particle diameter of magnesium-aluminium spinel is respectively 0.35-0.88mm, 0.012-0.3mm, 0.0125-1 μm and 1.75-10nm.
As preferably, the mass fraction content of each raw material of described composite refractory is respectively: magnesium-aluminium spinel 30-35 part of magnesium-aluminium spinel 60-75 part of 0.35-0.88mm, magnesium-aluminium spinel 35-45 part of 0.012-0.3mm, 0.0125-1 μm, magnesium-aluminium spinel 10-15 part of 1.75-10nm, supplementary additive 5-9 part, nano chromium oxide 1-4 part, bonding agent 3-7 part and nano aluminium oxide 2-6 part.
As preferably, supplementary additive is the mixture of diatom ooze, boron nitride, glass microballon and nano zine oxide, and the mass ratio of diatom ooze, boron nitride, glass microballon and nano zine oxide is 5:3:4:7.In the technical program, glass microballon granularity is suitable, good fluidity, dispersity is high, add glass microballon, refractory materials internal height can be made dispersed, acceleration of sintering, and have evenly weave construction, improve intensity and the thermal shock resistance of goods, the granularity of nano zine oxide is tiny, can fill fine pores, reduce the void content of goods, improve volume density.Can make the adding of diatom ooze nano aluminium oxide with nano chromium oxide be transformed into active nano aluminium oxide with and nano chromium oxide, make its performance more outstanding.
As preferably, bonding agent is the mixture of maltodextrin, Sodium phosphate dibasic, alkali lignin, and the mass ratio of maltodextrin, Sodium phosphate dibasic, alkali lignin is 3:1:2.In the technical program, magnesium-aluminium spinel generally uses silicon ash or pure calcium aluminate cement as bonding agent, but the silicon-dioxide in the calcium oxide in cement or silicon ash can have a strong impact on the performance of material, and the present invention adopts the mixture of maltodextrin, Sodium phosphate dibasic and alkali lignin as bonding agent, magnesium-aluminium spinel can be allowed better to be formed in conjunction with phase with nano aluminium oxide, nano chromium oxide, make the anti-erosion of goods, creep-resistant property better.
As preferably, add glass microballon and nano zine oxide after diatom ooze mixes in ethanol with boron nitride, in a water bath after ultrasonic vibration 2h, drying obtains supplementary additive.
As preferably, maltodextrin is dissolved in deionized water, is heated to 60-75 DEG C, add Sodium phosphate dibasic and alkali lignin passes into nitrogen, gas velocity 4m/s.
A preparation method for composite refractory, each raw material weighs by above proportioning, obtains base substrate through mixing, shaping, maintenance, through 234-256 DEG C of dry 12-16h, then through 1700-1850 DEG C burn till, inspection process obtains composite refractory.
As preferably, after burning till through 1700-1850 DEG C, cool 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 of insulation 6h and be cooled to room temperature detection again.
Beneficial effect of the present invention,
1) goods of the present invention have evenly weave construction, improve the intensity of goods and thermal shock resistance, the granularity of nano zine oxide is tiny, can fill fine pores, reduces the void content of goods, improves volume density;
2) goods refractoriness of the present invention is high, erosion-resisting characteristics is excellent, thermal shock resistance good, and sintering range is wide.
Embodiment
Below in conjunction with specific embodiment, the present invention is further explained, the restriction not to its protection domain.
Method therefor of the present invention, refers in particular to as non-, is conventional means.
The particle diameter of magnesium-aluminium spinel is respectively 0.35-0.88mm, 0.012-0.3mm, 0.0125-1 μm and 1.75-10nm.
Supplementary additive is the mixture of diatom ooze, boron nitride, glass microballon and nano zine oxide, and the mass ratio of diatom ooze, boron nitride, glass microballon and nano zine oxide is 5:3:4:7.Add glass microballon and nano zine oxide after diatom ooze mixes in ethanol with boron nitride, in 50 DEG C of water-baths after ultrasonic vibration 2h, 120 DEG C of dryings obtain supplementary additive.
Bonding agent is the mixture of maltodextrin, Sodium phosphate dibasic, alkali lignin, and the mass ratio of maltodextrin, Sodium phosphate dibasic, alkali lignin is 3:1:2.Maltodextrin is dissolved in deionized water, is heated to 60-75 DEG C, add Sodium phosphate dibasic and alkali lignin passes into nitrogen, gas velocity 4m/s.
The present invention is raw materials used can buy from market.
Embodiment 1
The mass fraction content of each raw material of composite refractory is respectively: the magnesium-aluminium spinel 30 parts of the magnesium-aluminium spinel 60 parts of 0.35-0.88mm, the magnesium-aluminium spinel 35 parts of 0.012-0.3mm, 0.0125-1 μm, the magnesium-aluminium spinel 10 parts of 1.75-10nm, supplementary additive 5 parts, nano chromium oxide 1 part, bonding agent 3 parts and nano aluminium oxide 2 parts.
A kind of preparation method of composite refractory, each raw material weighs by above proportioning, base substrate is obtained through mixing, shaping, maintenance, through 234 DEG C of dry 12h, after burning till through 1700 DEG C, cool the temperature to 1200 DEG C of insulation 2h, continue to be cooled to 600 DEG C of insulation 3.5h, be then cooled to 240 DEG C of insulation 6h and be cooled to the obtained composite refractory of room temperature detection again.
Embodiment 2
The mass fraction content of each raw material of composite refractory is respectively: the magnesium-aluminium spinel 32 parts of the magnesium-aluminium spinel 70 parts of 0.35-0.88mm, the magnesium-aluminium spinel 40 parts of 0.012-0.3mm, 0.0125-1 μm, the magnesium-aluminium spinel 13 parts of 1.75-10nm, supplementary additive 7 parts, nano chromium oxide 3 parts, bonding agent 5 parts and nano aluminium oxide 4 parts.
A kind of preparation method of composite refractory, each raw material weighs by above proportioning, base substrate is obtained through mixing, shaping, maintenance, through 243 DEG C of dry 14h, after burning till through 1800 DEG C, cool the temperature to 1250 DEG C of insulation 2h, continue to be cooled to 750 DEG C of insulation 3.5h, be then cooled to 255 DEG C of insulation 6h and be cooled to the obtained composite refractory of room temperature detection again.
Embodiment 3
The mass fraction content of each raw material of composite refractory is respectively: the magnesium-aluminium spinel 35 parts of the magnesium-aluminium spinel 75 parts of 0.35-0.88mm, the magnesium-aluminium spinel 45 parts of 0.012-0.3mm, 0.0125-1 μm, the magnesium-aluminium spinel 15 parts of 1.75-10nm, supplementary additive 9 parts, nano chromium oxide 4 parts, bonding agent 7 parts and nano aluminium oxide 6 parts.
A kind of preparation method of composite refractory, each raw material weighs by above proportioning, base substrate is obtained through mixing, shaping, maintenance, through 256 DEG C of dry 16h, after burning till through 1850 DEG C, cool the temperature to 1350 DEG C of insulation 2h, continue to be cooled to 850 DEG C of insulation 3.5h, be then cooled to 280 DEG C of insulation 6h and be cooled to the obtained composite refractory of room temperature detection again.
Comparative example 1, commercially available refractory materials.
The performance of the refractory materials of refractory materials prepared by embodiment 1-3 and comparative example 1 is in table 1.
Table 1, performance
| Void content, % | Volume density, g/ Cm 3 | Compressive strength, Mpa | Conforming product 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 |
Claims (9)
1. a composite refractory, is characterized in that, described composite refractory for main raw material with the magnesium-aluminium spinel of different-grain diameter, adds supplementary additive, nano chromium oxide, bonding agent and nano aluminium oxide and makes.
2. a kind of composite refractory according to claim 1, is characterized in that, the particle diameter of magnesium-aluminium spinel is respectively 0.35-0.88mm, 0.012-0.3mm, 0.0125-1 μm and 1.75-10nm.
3. a kind of composite refractory according to claim 1 and 2, it is characterized in that, the mass fraction content of each raw material of described composite refractory is respectively: magnesium-aluminium spinel 30-35 part of magnesium-aluminium spinel 60-75 part of 0.35-0.88mm, magnesium-aluminium spinel 35-45 part of 0.012-0.3mm, 0.0125-1 μm, magnesium-aluminium spinel 10-15 part of 1.75-10nm, supplementary additive 5-9 part, nano chromium oxide 1-4 part, bonding agent 3-7 part and nano aluminium oxide 2-6 part.
4. a kind of composite refractory according to claim 1 and 2, it is characterized in that, supplementary additive is the mixture of diatom ooze, boron nitride, glass microballon and nano zine oxide, and the mass ratio of diatom ooze, boron nitride, glass microballon and nano zine oxide is 5:3:4:7.
5. a kind of composite refractory according to claim 1 and 2, is characterized in that, bonding agent is the mixture of maltodextrin, Sodium phosphate dibasic, alkali lignin, and the mass ratio of maltodextrin, Sodium phosphate dibasic, alkali lignin is 3:1:2.
6. a kind of composite refractory according to claim 4, is characterized in that, adds glass microballon and nano zine oxide after diatom ooze mixes in ethanol with boron nitride, and in a water bath after ultrasonic vibration 2h, drying obtains supplementary additive.
7. a kind of composite refractory according to claim 5, is characterized in that, maltodextrin is dissolved in deionized water, be heated to 60-75 DEG C, adds Sodium phosphate dibasic and alkali lignin passes into nitrogen, gas velocity 4m/s.
8. the preparation method of a composite refractory as claimed in claim 1, it is characterized in that, each raw material weighs by above proportioning, obtains base substrate through mixing, shaping, maintenance, through 234-256 DEG C of dry 12-16h, then through 1700-1850 DEG C burn till, inspection process obtains composite refractory.
9. the preparation method of a kind of composite refractory according to claim 8 is characterized in that, after burning till through 1700-1850 DEG C, cool 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 of insulation 6h and be cooled to room temperature detection again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510398670.8A CN105084915A (en) | 2015-07-09 | 2015-07-09 | Compound refractory material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510398670.8A CN105084915A (en) | 2015-07-09 | 2015-07-09 | Compound refractory material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105084915A true CN105084915A (en) | 2015-11-25 |
Family
ID=54566358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510398670.8A Pending CN105084915A (en) | 2015-07-09 | 2015-07-09 | Compound refractory material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105084915A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776325A (en) * | 2019-11-21 | 2020-02-11 | 武汉科技大学 | Zeolite modified cement combined chromium-containing corundum castable and preparation method thereof |
| CN113200742A (en) * | 2021-05-07 | 2021-08-03 | 湖北第二师范学院 | Heat-insulating composite wear-resistant brick |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010280540A (en) * | 2009-06-05 | 2010-12-16 | Shinagawa Refractories Co Ltd | Chromia-enriched castable refractory substance, and precast block using the same |
| CN102260084A (en) * | 2010-05-25 | 2011-11-30 | 长兴亿维冶金炉料有限公司 | Corundum refractory castable |
| CN102276276A (en) * | 2011-07-22 | 2011-12-14 | 中钢集团洛阳耐火材料研究院有限公司 | Alumina hollow ball insulation product |
| 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 |
-
2015
- 2015-07-09 CN CN201510398670.8A patent/CN105084915A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010280540A (en) * | 2009-06-05 | 2010-12-16 | Shinagawa Refractories Co Ltd | Chromia-enriched castable refractory substance, and precast block using the same |
| CN102260084A (en) * | 2010-05-25 | 2011-11-30 | 长兴亿维冶金炉料有限公司 | Corundum refractory castable |
| CN102276276A (en) * | 2011-07-22 | 2011-12-14 | 中钢集团洛阳耐火材料研究院有限公司 | Alumina hollow ball insulation product |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776325A (en) * | 2019-11-21 | 2020-02-11 | 武汉科技大学 | Zeolite modified cement combined chromium-containing corundum castable and preparation method thereof |
| CN110776325B (en) * | 2019-11-21 | 2021-08-17 | 武汉科技大学 | Zeolite modified cement combined chromium-containing corundum castable and preparation method thereof |
| CN113200742A (en) * | 2021-05-07 | 2021-08-03 | 湖北第二师范学院 | Heat-insulating composite wear-resistant brick |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105036770A (en) | Magnesium-aluminum refractory material and preparation method therefor | |
| CN101215176B (en) | High-strength low heat conductivity energy-saving fireproof material | |
| CN104909771B (en) | Aluminous cement combined corundum matter castable and preparation method thereof | |
| CN102329137B (en) | Carbon-free alumina-magnesia unburned brick and preparation method and application thereof | |
| CN100467426C (en) | Silicon carbide crusting resistant pouring material and preparation method thereof | |
| CN105036767A (en) | Magnesia-zirconia refractory material and preparation method thereof | |
| CN105084916A (en) | Corrosion-resistant magnesium-aluminum fire resistant material and preparation method therefor | |
| CN101805198B (en) | Mullite steel fiber castable | |
| CN104909772B (en) | Aluminous cement combined corundum matter castable containing compound additive and preparation method thereof | |
| CN107973610A (en) | A kind of carborundum ramming mass using discarded silicon carbide sagger as primary raw material | |
| CN104944989A (en) | Silicon sol combined corundum-silicon carbide wet-type spray material | |
| CN101555146B (en) | Refractory castable composition with heat insulation and wear resistance and application thereof | |
| CN100457686C (en) | Semi-silica brick for 7.63-meter coke oven | |
| CN104355630A (en) | Wear-resistant and thermal shock-resistant lining for air supply branch pipe of iron-making blast furnace and preparation method thereof | |
| CN104446564A (en) | Preparation method of zircon corundum brick containing chromic oxide | |
| CN101875561B (en) | Nano-SiO2 and nano-CaO composite ceramic bond siliceous refractory castable and preparation method thereof | |
| CN106904980A (en) | A kind of magnesium aluminum spinel pouring material of blast furnace iron outlet groove slag corrosion resistance | |
| CN113233908A (en) | Regenerated carbon-free brick and preparation method thereof | |
| CN105481375A (en) | Energy-saving and fire-resistant material | |
| CN105130455A (en) | Anti-oxidation refractory material and preparation method thereof | |
| CN104909773B (en) | Aluminous cement combination properties of alumina-magnesia castables containing compound additive and preparation method thereof | |
| CN106631061A (en) | High-thermal-conductivity magnesium-rich spinel composite brick for flue wall and preparation method of composite brick | |
| CN103951444B (en) | CFB Boiler room high-heat resistance shock resistant coating and production technique thereof | |
| CN105084915A (en) | Compound refractory material and preparation method thereof | |
| CN103922759B (en) | Preparation method of silicon carbide wear-resistant fireproof wind-guiding wall crossbeam and wind-guiding wall brick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151125 |