CN106800416A - A kind of low-creep refractory brick and preparation method thereof - Google Patents
A kind of low-creep refractory brick and preparation method thereof Download PDFInfo
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- CN106800416A CN106800416A CN201611175447.8A CN201611175447A CN106800416A CN 106800416 A CN106800416 A CN 106800416A CN 201611175447 A CN201611175447 A CN 201611175447A CN 106800416 A CN106800416 A CN 106800416A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3258—Tungsten oxides, tungstates, or oxide-forming salts thereof
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- 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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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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- 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
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3481—Alkaline earth metal alumino-silicates other than clay, e.g. cordierite, beryl, micas such as margarite, plagioclase feldspars such as anorthite, zeolites such as chabazite
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- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/442—Carbonates
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- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
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Abstract
The invention discloses a kind of low-creep refractory brick and preparation method thereof, it is made up of the raw material of following weight portion：Gram sandstone 17 29, fused alumina zirconia 14 26, cordierite 10 20, diatomite 35 45, nanometer tungsten oxide 5 10, lime stone 12 23, air-flow bed coal-gasification slag 11 19, serpentine 13 24, paper white sludge 20 30, garnet 11 22, boron carbide fibre 8 14, riverway sludge 15 25.Refractory brick raw material of the present invention employs boron carbide fibre, nanometer tungsten oxide etc., through rational component proportion and the sintering processes of science, obtained refractory brick is had high mechanical strength, and high temperature creep rate is low, the advantages of thermal shock resistance is good, corrosion resistance is strong.
Description
Technical field
The present invention relates to a kind of low-creep refractory brick and preparation method thereof, belong to fire resisting material field.
Background technology
Refractory brick is a kind of construction material brick class, its attribute " fire resisting " as its name.It is with refractory clay or
The refractory material that other refractory raw materials are fired into, can at high temperature be amenable to various physicochemical changes and mechanism.It is resistance to
Firebrick is not common in our life, but occurs in some live closely bound up building with us, such as house
Building, kiln building, Thermal Equipment etc..
Patent No.：It is resistance to that the patent of invention of 201510494613.X discloses a kind of foamed heat insulating of utilization gangue production
Firebrick and preparation method thereof, its raw material composition is 40~60 parts of gangue, 30~50 parts of bauxite gangue, powder by weight ratio
2~15 parts of coal ash, 0~15 part of silica sand, 0~1 part of lignosulfite.One kind that the invention is provided is main using gangue
Foamed heat insulating refractory brick of raw material production and preparation method thereof, although solve light-weight refractory insulating brick on domestic market resistance to
Fiery degree is low, be molded the problem of poor, low intensity and high cost, but with the fast development of science and technology and economic level not
Disconnected to improve, the creep-resistant property to refractory brick proposes requirement higher, and in the market needs a kind of high temperature creep rate lower
Refractory brick.
The content of the invention
Present invention aim at a kind of low-creep refractory brick of offer and preparation method thereof.
In order to realize upper purpose, the present invention is adopted the following technical scheme that：
A kind of low-creep refractory brick, is made up of the raw material of following weight portion：Gram sandstone 17-29, fused alumina zirconia 14-26, cordierite 10-
20th, diatomite 35-45, nanometer tungsten oxide 5-10, lime stone 12-23, air-flow bed coal-gasification slag 11-19, serpentine 13-24, make
Paper white clay 20-30, garnet 11-22, boron carbide fibre 8-14, riverway sludge 15-25.
A kind of preparation method of low-creep refractory brick, is made up of the following steps：
（1）Gram sandstone, serpentine, fused alumina zirconia are well mixed, are crushed, cross 50-100 mesh sieves, added equivalent to mixed-powder matter
Measure the sodium carbonate of 35-40% and the sodium nitrate of 30-35%, 600-900r/min dry ball milling 10-20min, then at 870-910 DEG C
At a temperature of calcine 5-7h, be cooled to room temperature；
（2）Cordierite, garnet are well mixed, are crushed, cross 80-120 mesh sieves, add step（1）Powder after calcining, mixing
Uniformly, the sodium chloride of the sodium sulphate and 35-40% equivalent to mixed-powder quality 40-45%, 400-700r/min dry method are added
Ball milling 20-30min, then the heating using microwave 4-6h under the power of 300-500W, then the heating using microwave under the power of 500-700W
3-5h, then the heating using microwave 1-3h under the power of 800-1000W, are cooled to room temperature, use distilled water washes clean, dry；
（3）Lime stone, air-flow bed coal-gasification slag, boron carbide fibre, diatomite are well mixed, are crushed, cross 100-150 mesh sieves,
Appropriate water is subsequently adding, is stirred so that the moisture control of compound adds step in 30-35%（2）It is obtained
The raw material such as powder and nanometer tungsten oxide, paper white sludge, riverway sludge, stirs；
（4）By step（3）Obtained wet feed is added to compressing in brickmaking machine, and briquetting pressure is 25-35MPa；Then will be into
Wet base natural curing 25-40h after type, then dried to moisture content≤3% at a temperature of 100-120 DEG C；
（5）By step（4）Dry adobe is warming up to 870-930 DEG C with the speed of 6-8 DEG C/min, is incubated 5-6h, then with 8-10
DEG C/speed of min is warming up to 1400-1450 DEG C, is incubated 7-8h, then 930-990 DEG C is cooled to the speed of 5-7 DEG C/min, protect
Warm 6-7h, then 500-550 DEG C is cooled to the speed of 4-6 DEG C/min, 3-4h is incubated, it is cooled to normal temperature.
Beneficial effects of the present invention：
（1）The present invention a gram sandstone, serpentine, fused alumina zirconia are calcined under the fused salt of sodium carbonate and sodium nitrate first, then again with
Cordierite, garnet mixing, the composite granule that microwave calcination is obtained under the fused salt of sodium sulphate and sodium chloride has excellent resistance to
Fiery performance, adds in brick as raw material, can notable refractory brick refractoriness；
（2）Refractory brick raw material of the present invention employs boron carbide fibre, nanometer tungsten oxide etc., through rational component proportion and science
Sintering processes, make obtained refractory brick that there is high mechanical strength, high temperature creep rate is low, and thermal shock resistance is good, corrosion resistance
Strong the advantages of.
Specific embodiment
A kind of low-creep refractory brick, by following weight portion（kg）Raw material be made：Gram sandstone 23, fused alumina zirconia 19, cordierite
15th, diatomite 40, nanometer tungsten oxide 8, lime stone 18, air-flow bed coal-gasification slag 15, serpentine 18, paper white sludge 25, garnet
17th, boron carbide fibre 10, riverway sludge 20.
A kind of preparation method of low-creep refractory brick, is made up of the following steps：
（1）Gram sandstone, serpentine, fused alumina zirconia are well mixed, are crushed, cross 80 mesh sieves, added equivalent to mixed-powder quality 38%
Sodium carbonate and 32% sodium nitrate, then 700r/min dry ball milling 15min calcine 6h, be cooled at a temperature of 890 DEG C
Room temperature；
（2）Cordierite, garnet are well mixed, are crushed, cross 100 mesh sieves, add step（1）Powder after calcining, mixing is equal
It is even, add the sodium chloride of the sodium sulphate and 38% equivalent to mixed-powder quality 42%, 500r/min dry ball milling 25min, so
The heating using microwave 5h under the power of 400W, then the heating using microwave 4h under the power of 600W afterwards, then microwave adds under the power of 900W
Hot 2h, is cooled to room temperature, uses distilled water washes clean, dries；
（3）Lime stone, air-flow bed coal-gasification slag, boron carbide fibre, diatomite are well mixed, are crushed, cross 120 mesh sieves, then
Appropriate water is added, is stirred so that the moisture control of compound adds step in 30-35%（2）Obtained powder
And the raw material such as nanometer tungsten oxide, paper white sludge, riverway sludge, stir；
（4）By step（3）Obtained wet feed is added to compressing in brickmaking machine, and briquetting pressure is 30MPa；Then after being molded
Wet base natural curing 32h, then dried to moisture content≤3% at a temperature of 110 DEG C；
（5）By step（4）Dry adobe is warming up to 905 DEG C with the speed of 7 DEG C/min, is incubated 5h, then with the speed of 9 DEG C/min
1420 DEG C are warming up to, 7h is incubated, then 960 DEG C are cooled to the speed of 6 DEG C/min, be incubated 6h, then lower the temperature with the speed of 5 DEG C/min
To 540 DEG C, 3h is incubated, is cooled to normal temperature.
The main performance testing result of refractory brick obtained in above-described embodiment is as shown in the table：
| Project | Unit | Testing result |
| Refractoriness | ℃ | 1770 |
| Compressive resistance | MPa | 69 |
| Rupture strength | MPa | 21 |
| Refractoriness under load（T0.6） | ℃ | 1660 |
| Thermal shock resistance（1100 DEG C, water-cooled） | It is secondary | 21 |
| High temperature creep rate | % | 0.2 |
Claims (2)
1. a kind of low-creep refractory brick, it is characterised in that be made up of the raw material of following weight portion：Gram sandstone 17-29, fused alumina zirconia
14-26, cordierite 10-20, diatomite 35-45, nanometer tungsten oxide 5-10, lime stone 12-23, air-flow bed coal-gasification slag 11-19,
Serpentine 13-24, paper white sludge 20-30, garnet 11-22, boron carbide fibre 8-14, riverway sludge 15-25.
2. a kind of preparation method of low-creep refractory brick as claimed in claim 1, it is characterised in that be made up of the following steps：
（1）Gram sandstone, serpentine, fused alumina zirconia are well mixed, are crushed, cross 50-100 mesh sieves, added equivalent to mixed-powder matter
Measure the sodium carbonate of 35-40% and the sodium nitrate of 30-35%, 600-900r/min dry ball milling 10-20min, then at 870-910 DEG C
At a temperature of calcine 5-7h, be cooled to room temperature；
（2）Cordierite, garnet are well mixed, are crushed, cross 80-120 mesh sieves, add step（1）Powder after calcining, mixing
Uniformly, the sodium chloride of the sodium sulphate and 35-40% equivalent to mixed-powder quality 40-45%, 400-700r/min dry method are added
Ball milling 20-30min, then the heating using microwave 4-6h under the power of 300-500W, then the heating using microwave under the power of 500-700W
3-5h, then the heating using microwave 1-3h under the power of 800-1000W, are cooled to room temperature, use distilled water washes clean, dry；
（3）Lime stone, air-flow bed coal-gasification slag, boron carbide fibre, diatomite are well mixed, are crushed, cross 100-150 mesh sieves,
Appropriate water is subsequently adding, is stirred so that the moisture control of compound adds step in 30-35%（2）It is obtained
The raw material such as powder and nanometer tungsten oxide, paper white sludge, riverway sludge, stirs；
（4）By step（3）Obtained wet feed is added to compressing in brickmaking machine, and briquetting pressure is 25-35MPa；Then will be into
Wet base natural curing 25-40h after type, then dried to moisture content≤3% at a temperature of 100-120 DEG C；
（5）By step（4）Dry adobe is warming up to 870-930 DEG C with the speed of 6-8 DEG C/min, is incubated 5-6h, then with 8-10
DEG C/speed of min is warming up to 1400-1450 DEG C, is incubated 7-8h, then 930-990 DEG C is cooled to the speed of 5-7 DEG C/min, protect
Warm 6-7h, then 500-550 DEG C is cooled to the speed of 4-6 DEG C/min, 3-4h is incubated, it is cooled to normal temperature.
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| CN201611175447.8A CN106800416A (en) | 2016-12-19 | 2016-12-19 | A kind of low-creep refractory brick and preparation method thereof |
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| CN201611175447.8A CN106800416A (en) | 2016-12-19 | 2016-12-19 | A kind of low-creep refractory brick and preparation method thereof |
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| CN106800416A true CN106800416A (en) | 2017-06-06 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211164A (en) * | 2011-05-13 | 2011-10-12 | 无锡德乾能源设备有限公司 | Application of refractory brick in casting field |
| CN105967696A (en) * | 2016-04-06 | 2016-09-28 | 安徽宏发节能设备有限公司 | Fireproof fired clay hollow brick and preparation method thereof |
| CN106083037A (en) * | 2016-06-12 | 2016-11-09 | 安徽省亚欧陶瓷有限责任公司 | A kind of high temperature resistance and high strength ceramic tile and preparation method thereof |
| CN106082984A (en) * | 2016-06-12 | 2016-11-09 | 安徽省亚欧陶瓷有限责任公司 | A kind of shock resistance cracking resistance ceramic tile and preparation method thereof |
-
2016
- 2016-12-19 CN CN201611175447.8A patent/CN106800416A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211164A (en) * | 2011-05-13 | 2011-10-12 | 无锡德乾能源设备有限公司 | Application of refractory brick in casting field |
| CN105967696A (en) * | 2016-04-06 | 2016-09-28 | 安徽宏发节能设备有限公司 | Fireproof fired clay hollow brick and preparation method thereof |
| CN106083037A (en) * | 2016-06-12 | 2016-11-09 | 安徽省亚欧陶瓷有限责任公司 | A kind of high temperature resistance and high strength ceramic tile and preparation method thereof |
| CN106082984A (en) * | 2016-06-12 | 2016-11-09 | 安徽省亚欧陶瓷有限责任公司 | A kind of shock resistance cracking resistance ceramic tile and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 丁军等: "熔盐介质中制备镁橄榄石轻质材料的机理", 《硅酸盐通报》 * |
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