CN104973869B - Mullite light heat-insulation fire-resistant brick and production method thereof - Google Patents
Mullite light heat-insulation fire-resistant brick and production method thereof Download PDFInfo
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- CN104973869B CN104973869B CN201410145534.3A CN201410145534A CN104973869B CN 104973869 B CN104973869 B CN 104973869B CN 201410145534 A CN201410145534 A CN 201410145534A CN 104973869 B CN104973869 B CN 104973869B
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- 239000011449 brick Substances 0.000 title claims abstract description 54
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 21
- 238000009413 insulation Methods 0.000 title abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 29
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 14
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims abstract description 14
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004927 clay Substances 0.000 claims abstract description 12
- 229920006248 expandable polystyrene Polymers 0.000 claims abstract description 12
- 229910052850 kyanite Inorganic materials 0.000 claims abstract description 12
- 239000010443 kyanite Substances 0.000 claims abstract description 12
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical group O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004568 cement Substances 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims description 55
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- 238000010792 warming Methods 0.000 claims description 28
- 229910000838 Al alloy Inorganic materials 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 229910052742 iron Inorganic materials 0.000 claims description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 14
- 229920000742 Cotton Polymers 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000002023 wood Substances 0.000 claims description 9
- 238000010304 firing Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 2
- 238000004512 die casting Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000012798 spherical particle Substances 0.000 claims 1
- 229910052593 corundum Inorganic materials 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000010431 corundum Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000007767 bonding agent Substances 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 1
- 238000004079 fireproofing Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 22
- 239000000843 powder Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 description 4
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000004531 microgranule Substances 0.000 description 2
- 239000010451 perlite Substances 0.000 description 2
- 235000019362 perlite Nutrition 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052851 sillimanite Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a mullite light heat-insulation fire-resistant brick and production method thereof. The fire-resistant brick includes following raw materials: 25-35% of aluminium hydroxide, 10-30% of flint clay clinker, 10-30% of kyanite, 35-50% of a bonding agent. With the raw materials, 1.0-2.0 m<3> of expandable polystyrene and 0.3-0.5 m<3> of sawdust are added. The bonding agent is kaolin or aluminum oxide cement. The fire-resistant brick is high in pressure resistance strength, is low in heat conductive coefficient, is low in change rate of a high-temperature re-burning curve and is good in thermal shock resistance, is excellent in performance and can reach the requirement of the standard of related products in American ASTM. By means of aluminium hydroxide for replacing aluminum oxide, the production method is low in energy consumption and cost, can generate more mullite crystal phases, can effectively reduce the content of a corundum phase in the product, and can increase the thermal shock resistance. The fire-resistant brick can be used in a heat insulation layer and a fireproof layer in all thermal equipment, achieves both energy-saving and fireproofing effects and is beneficial to popularization.
Description
Technical field
The present invention relates to a kind of light heat-insulating fire resistant brick, more particularly to a kind of Thermal Equipment is resistance to mullite lightweight heat-proof
Firebrick and its production method.
Background technology
Energy scarcity in world wide, various Thermal Equipments are the critical facilitys in commercial production, are also that energy resource consumption is big
Family, therefore, the flame retardant coating of various Thermal Equipments and thermal insulation layer require insulation, fire resisting, heat-insulated, are that Thermal Equipment long-term safety makes
With, energy-saving obtain bigger economic benefit guarantee.Heat-insulated, the thermal insulation fire-resistant brick of various materials adopts substantially at present（1）Plus
Enter combustible, such as sawdust, poly- light ball；（2）Low-density, low refractoriness light material, such as fine perlite, closed perlite.So
And add low-density light material often to destroy the high temperature serviceabilities such as the overall refractoriness of product, Linear change rate in large quantities,
Product does not reach concerned countries standard, thus reducing the service life of Industrial Stoves, even results in sending out of production accident when serious
Raw.
The patent application of Application No. 200810015228.2 discloses a kind of mullite light heat insulating brick, its component
Including Zhanjiang soil, kyanite, sillimanite, calcined alumina, same model waste product feed back etc..This products material is relatively costly, uses
The raw material such as calcined alumina be highly energy-consuming high valuable stuff, more uneconomical in insulating brick used in producing, product propertiess are general, produce
The cost performance of product is relatively low.
Content of the invention
The technical problem to be solved in the present invention：There is provided a kind of compressive resistance height, heat conductivity is low, Linear change rate is low, thermal shock
Good stability, the mullite light heat-insulating fire resistant brick of low production cost and its production method.
Technical scheme：
A kind of mullite light heat-insulating fire resistant brick, in weight percent, raw material is aluminium hydroxide 25 ~ 35%, flint clay
Grog 10 ~ 30%, kyanite 10 ~ 30%, binding agent 35 ~ 50%, based on above-mentioned raw materials, basic material per ton adds expandability
Polystyrene spheres 1.0 ~ 2.0m3, sawdust 0.3 ~ 0.5m3；Described binding agent is Kaolin or alundum cement.
The aluminium content of described aluminium hydroxide is >=30%, and granularity is 200 ~ 325 mesh；The aluminium content of described flint clay grog is
42 ~ 55%, granularity is 200 ~ 325 mesh；The aluminium content of described kyanite is 48 ~ 58%, and granularity is 180 ~ 325 mesh；Described binding agent
Granularity be 200 ~ 325 mesh.
Described expandable polystyrene ball is the ball being formed after high-temperature steam processing by the former grain of expandable polystyrene
Shape particle, unit weight is 15 ~ 20kg/m3, granularity is 0.5 ~ 1.5mm.
Described sawdust is sieved with the screen cloth of 14 mesh, and be then soaked in water process, and soak time is no less than 30 days.
The production method of described mullite light heat-insulating fire resistant brick, including weighing raw material, material mixing, molding, drying and burning
Become, first basic material aluminium hydroxide, flint clay grog, kyanite, binding agent are mixed in proportion, stir；It is subsequently adding
Expandable polystyrene bead, sawdust, are uniformly mixed；Add water, the weight of basic material and water ratio is for 1.0 ~ 1.75：1,
The muddy material of flowing is made in stirring；It is then injected into die casting and becomes adobe, kiln will be loaded after brick bat drying；By adobe from normal
Temperature is heated to 1350 ~ 1400 DEG C of high temperature, is incubated 2 ~ 3 h, burns till.
Described brick bat drying divides two sections to carry out, and first paragraph is cold drying, and baking temperature is 20 ~ 35 DEG C, and drying time is
24~36h；Second segment is force drying, and baking temperature is 90 ~ 110 DEG C, and drying time is 24 ~ 36h, raw brick moisture content matter after being dried
Amount content controls below 5%.
Adopt honeycomb aluminium alloy to dry supporting plate during brick bat drying, aluminium alloy plate carries ventilating drainage hole, on aluminium alloy plate
It is laid with cotton layer, between aluminium alloy plate and cotton layer, adopt adhesive bonding.
The firing temperature system that adobe is heated to high temperature from room temperature is：Adobe is warming up to 700 by room temperature through 8～10h～
750 DEG C, it is incubated 1～1.5h；It is warming up to 1000～1050 DEG C through 5～6h, be incubated 1.5～2h；It is warming up to 1250 through 5～6h～
1300 DEG C, it is incubated 1～1.5h；It is warming up to 1350～1400 DEG C through 2～3h, be incubated 2～3h；Then start to lower the temperature, by 1350～
1400 DEG C are cooled to 1100～1150 DEG C through 8～10h, are incubated 1～1.5h；It is cooled to 800～850 DEG C through 7～7.5h again, finally
Naturally cool to 100 DEG C, kiln discharge.
Described mould is wood mold coupled, and the upper surface of mould frame is provided with groove, is inlaid with iron block in groove, described groove
The width of bottom is more than top, the shape of iron block and the groove match of groove, and the cross section of described groove is trapezoidal or square.
Material performance requires：
1st, the performance requirement of aluminium hydroxide fine powder：
2nd, the performance requirement of flint clay grog fine powder：
| Al2O3（%） | Fe2O3（%） | Refractoriness（℃） | Igloss（%） |
| 42-55 | ≤1.0 | ≥1770 | ≤1 |
3rd, the performance requirement of kyanite fine powder：
| Al2O3（%） | SiO2（%） | Fe2O3（%） | Na2O+K2O（%） | Igloss（%） |
| 45~52 | 40-48 | ≤1.0 | ≤0.4 | ≤0.1 |
4th, the performance requirement of Kaolin fine powder：
| Al2O3（%） | SiO2（%） | Fe2O3（%） | Na2O+K2O（%） | Igloss（%） |
| 35~50 | 48-63 | ≤1.0 | ≤0.4 | ≤10 |
5th, the performance requirement of pure alumina cement：
| Al2O3（%） | CaO（%） | Fe2O3（%） | SiO2（%） | Igloss（%） |
| 68~80 | 2-17 | ≤0.5 | ≤0.5 | ≤0.1 |
The positive beneficial effect of the present invention：
（1）The mullite light heat-insulating fire resistant brick of the present invention, with aluminium hydroxide, flint clay, kyanite and binding agent as base
Plinth raw material, reasonable mixture ratio between raw material, compatibility is good, and product has compressive resistance height, heat conductivity low and high temperature reheat linear change
Rate is low, good thermal shock stability the advantages of, properties of product are excellent, reach the requirement of the products standards such as U.S. ASTM, see table
1.
Remarks：In table 1, Unite States Standard refers to U.S.ASTM standard；Performance parameter is the representative value of product of the present invention, can
The different performance requirement of user is reached by feedstock optimization proportioning, the unit of bulk density is g/cm3.
（2）The present invention adopts aluminium hydroxide to substitute conventional alumina raw material, and aluminium hydroxide is to produce calcined alumina
Intermediate products, energy consumption is low, low cost, decomposes Viability Al in product sintering2O3Microgranule, in conjunction with contained SiO in raw material2Raw
Become mullite crystalline phase, technique very energy-conservation, can effectively reduce the production cost of product, the active Al that aluminium hydroxide is decomposed to form2O3
Microgranule reactivity is very strong, can generate more mullite crystalline phases, effectively reduces the content of corundum phase in product, improves product
Thermal shock resistance.
（3）Honeycomb aluminium alloy is adopted to dry supporting plate, due to ventilative row being carried on aluminium alloy plate in the present invention during brick bat drying
Water hole, is laid with cotton layer simultaneously, and drying effect is good, energy-saving；It is dried using two-stage method, and set according to raw material type every
The baking temperature of section and drying time；First carry out cold drying, this stage raw brick moisture content is big, need to control drying temperature, prevent water
Point drastically discharging leads to adobe crackle, then force drying, controls base substrate moisture to reach requirement it is ensured that product after sintering
Quality.
（4）Mould in the present invention by embedded mode by iron block be arranged on wood mold coupled in, during use can be utilized carry
Mould is held by the device of Magnet from top, makes mold releasability, realizes some mechanicalization operation, can reduce labor intensity；Mould
Bottom portion of groove width is more than groove top, convenient fixing iron block, prevents iron block from coming off；Iron block is symmetric, stable operation, peace
Entirely.
（5）The present invention, using the firing temperature setting, is conducive to the improvement of Product processing and properties of product, is conducive to improving
The performance indications such as its compressive resistance.
（6）Product of the present invention can be widely used for various Thermal Equipment thermal insulation layers, flame retardant coating, reach energy-conservation, fire resisting dual
Effect, is conducive to popularization and application.
Brief description
Fig. 1 is for clay brick with inlaying the structure of wood mold coupled schematic diagram of iron block；
One of cross-sectional view of A-A in Fig. 2 Fig. 1；
The two of the cross-sectional view of A-A in Fig. 3 Fig. 1.
In figure, 1 is frame, and 2 is iron block, and 3 is groove.
Specific embodiment
Citing further illustrates the present invention below, and each material performance will ask for an interview to technical scheme part, and raw material is with weight percent
Ratio meter, consumption can the technical performance according to required by user specifically adjust.
Embodiment 1：Mullite light heat-insulating fire resistant brick（Proportion is 1.3）, proportioning is shown in Table 2, weighs hydrogen by weight percentage
Aluminum oxide fine powder 35%, flint clay fine powder 15%, kyanite fine powder 10%, binding agent Kaolin fine powder 40%, above-mentioned raw materials are added
Mix in forced stirrer, stir 5-6 minute；Raw material based on above-mentioned raw materials, basic material per ton adds expandability polyphenyl
Ethylene ball 1.0m3, sawdust 0.4m3, stir 5-6 minute；Add water in proportion, the weight of basic material and water is than for 1.0 ~ 1.75：1,
The agitated muddy material making flowing, stirs 5-6 minute；It is then injected in mould pouring into adobe, by brick bat drying, then
Load kiln；It is heated to 1350 ~ 1400 DEG C from room temperature, be incubated 2 ~ 3 h, burn till.
Described brick bat drying divides two sections to carry out, and first paragraph is cold drying, and baking temperature is 20 ~ 35 DEG C, and drying time is
24~36h；Second segment is force drying, and baking temperature is 90 ~ 110 DEG C, and drying time is 24 ~ 36h, raw brick moisture content matter after being dried
Amount content controls below 5%.Adopt honeycomb aluminium alloy to dry supporting plate during brick bat drying, wherein on aluminium alloy plate, carry ventilative row
Water hole, aluminium alloy plate is laid with cotton layer, adopts adhesive bonding between aluminium alloy plate and cotton layer.
The firing temperature system that adobe is heated from room temperature is：Adobe is warming up to 700～750 DEG C by room temperature through 8～10h,
Insulation 1～1.5h；It is warming up to 1000～1050 DEG C through 5～6h, be incubated 1.5～2h；It is warming up to 1250～1300 DEG C through 5～6h,
Insulation 1～1.5h；It is warming up to 1350～1400 DEG C through 2～3h, be incubated 2～3h；Then start to lower the temperature, by 1350～1400 DEG C of warps
8～10h is cooled to 1100～1150 DEG C, is incubated 1～1.5h；It is cooled to 800～850 DEG C through 7～7.5h again, last natural cooling
To 100 DEG C.
After product kiln discharge, its physicochemical property, surface quality and overall dimensions are tested；Size mark is pressed after product is qualified
Accurate or contract requirement carries out mill and builds, assembles；Finally product packaging is put in storage, take care of or deliver.Product proportion（I.e. bulk density）
Size is relevant with the addition of polystyrene sphere and sawdust.
Embodiment 2：The proportioning raw materials of mullite light heat-insulating fire resistant brick are shown in Table 2, and production method and example 1 are essentially identical, no
It is with part：
By proportioning, above-mentioned raw materials are added in forced stirrer and mix, stirring；Add expandable polystyrene ball, sawdust,
Stirring 5-6 minute；Add water in proportion, the weight of basic material and water is than for 1.0：1, the agitated muddy material making flowing,
Stirring 5-6 minute；It is then injected in mould pouring into adobe, brick bat drying is then charged into kiln；It is heated to 1350 from room temperature
DEG C, it is incubated 2 h, burn till.
Described brick bat drying divides two sections to carry out, first paragraph be cold drying, 20 DEG C of baking temperature, drying time 36h；Second
Section be force drying, 9 DEG C of baking temperature, drying time 6h, be dried after raw brick moisture content mass content control below 5%.Adobe is done
Adopt honeycomb aluminium alloy to dry supporting plate when dry, carry ventilating drainage hole wherein on aluminium alloy plate, aluminium alloy plate lays cotton layer.
The firing temperature system that adobe is heated from room temperature is：Adobe is warming up to 700 DEG C by room temperature through 8h, is incubated 1.5h；
It is warming up to 1000 DEG C through 5h, be incubated 2h；It is warming up to 1250 DEG C through 5h, be incubated 1.5h；It is warming up to 1350 DEG C through 2h, be incubated 3h；So
After start lower the temperature, be cooled to 1100 DEG C by 1350 DEG C through 8h, be incubated 1h；It is cooled to 800 DEG C through 7h again, finally naturally cool to
100 DEG C, kiln discharge.
Described mould is wood mold coupled, and the upper surface of mould frame is provided with groove, is inlaid with iron block in groove, described groove
The width of bottom is more than top, the shape of iron block and the groove match of groove, and the cross section of described groove is trapezoidal or square.
Embodiment 3：The proportioning raw materials of mullite light heat-insulating fire resistant brick are shown in Table 2, and production method and example 1 are essentially identical, no
It is with part：
By proportioning, above-mentioned raw materials are added in forced stirrer and mix, stirring；Add expandable polystyrene ball, sawdust,
Stirring 5-6 minute；Add water in proportion, the weight of basic material and water is than for 1.75：1, the agitated muddy material making flowing,
Stirring 5-6 minute；It is then injected in mould pouring into adobe, brick bat drying is then charged into kiln；It is heated to 1400 from room temperature
DEG C, it is incubated 3 h, burn till.
Described brick bat drying divides two sections to carry out, and first paragraph is cold drying, and baking temperature is 35 DEG C, and drying time is 24h；
Second segment is force drying, and baking temperature is 110 DEG C, and drying time is 24h, and after being dried, raw brick moisture content mass content controls 5%
Below.Adopt honeycomb aluminium alloy to dry supporting plate during brick bat drying, carry ventilating drainage hole wherein on aluminium alloy plate, on aluminium alloy plate
Lay cotton layer.
The firing temperature system that adobe is heated from room temperature is：Adobe is warming up to 750 DEG C by room temperature through 10h, is incubated 1h；Warp
6h is warming up to 1050 DEG C, is incubated 1.5h；It is warming up to 1300 DEG C through 6h, be incubated 1h；It is warming up to 1400 DEG C through 3h, be incubated 2h；Then
Start to lower the temperature, be cooled to 1150 DEG C by 1400 DEG C through 10h, be incubated 1.5h；It is cooled to 850 DEG C through 7.5h again, last natural cooling
To 100 DEG C, kiln discharge.
Described mould is wood mold coupled, and the upper surface of mould frame is provided with groove, is inlaid with iron block in groove, described groove
The width of bottom is more than top, the shape of iron block and the groove match of groove, and groove cross section is trapezoidal or square.
Embodiment 4：The proportioning raw materials of mullite light heat-insulating fire resistant brick are shown in Table 2, and production method and example 1 are essentially identical, no
It is with part：
By proportioning, above-mentioned raw materials are added in forced stirrer and mix, stirring；Add expandable polystyrene ball, sawdust,
Stirring 5-6 minute；Add water in proportion, the weight of basic material and water is than for 1.5：1, the agitated muddy material making flowing,
Stirring 5-6 minute；It is then injected in mould pouring into adobe, brick bat drying is then charged into kiln；It is heated to 1380 from room temperature
DEG C, it is incubated 2.5 h, burn till.
Described brick bat drying divides two sections to carry out, and first paragraph is cold drying, and baking temperature is 30 DEG C, and drying time is 30h；
Second segment is force drying, and baking temperature is 100 DEG C, and drying time is 30h, and after being dried, raw brick moisture content mass content controls 5%
Below.Adopt honeycomb aluminium alloy to dry supporting plate during brick bat drying, carry ventilating drainage hole wherein on aluminium alloy plate, on aluminium alloy plate
Lay cotton layer.
The firing temperature system that adobe is heated from room temperature is：Adobe is warming up to 720 DEG C by room temperature through 9h, is incubated 1.2h；
It is warming up to 1020 DEG C through 5.5h, be incubated 1.8h；It is warming up to 1280 DEG C through 5.5h, be incubated 1.2h；It is warming up to 1380 DEG C through 2.5h, protect
Warm 2.5h；Then start to lower the temperature, be cooled to 1130 DEG C by 1380 DEG C through 9h, be incubated 1.2h；It is cooled to 820 DEG C through 7.5h again,
After naturally cool to 100 DEG C.
Embodiment 5：The proportioning raw materials of mullite light heat-insulating fire resistant brick are shown in Table 2, and production method and example 1 are essentially identical, no
It is with part：
By proportioning, above-mentioned raw materials are added in forced stirrer and mix, stirring；Add expandable polystyrene ball, sawdust,
Stirring 5-6 minute；Add water in proportion, the weight of basic material and water is than for 1.35：1, the agitated muddy material making flowing,
Stirring 5-6 minute；It is then injected in mould pouring into adobe, brick bat drying is then charged into kiln；It is heated to 1360 from room temperature
DEG C, it is incubated 2 ~ 3 h, burn till.
Described brick bat drying divides two sections to carry out, and first paragraph is cold drying, and baking temperature is 30 DEG C, and drying time is 30h；
Second segment is force drying, and baking temperature is 100 DEG C, and drying time is 30h, and after being dried, raw brick moisture content mass content controls 5%
Below.Adopt honeycomb aluminium alloy to dry supporting plate during brick bat drying, carry ventilating drainage hole wherein on aluminium alloy plate, on aluminium alloy plate
Lay cotton layer.
The firing temperature system that adobe is heated from room temperature is：Adobe is warming up to 720 DEG C by room temperature through 9h, is incubated 1.2h；
It is warming up to 1000 DEG C through 5h, be incubated 2h；It is warming up to 1300 DEG C through 6h, be incubated 1.5h；It is warming up to 1360 DEG C through 3h, be incubated 3h；So
After start lower the temperature, be cooled to 1100 DEG C by 1360 DEG C through 10h, be incubated 1.5h；It is cooled to 800 DEG C through 7.5h again, finally naturally cold
But to 100 DEG C.
The proportioning raw materials of other embodiment are shown in Table 2, and production method and example 1 are essentially identical, no longer describe in detail.
Table 2：In embodiment, high alumina gathers the proportioning raw materials of light insulating fire brick（By weight percentage, %）
Claims (9)
1. a kind of mullite light heat-insulating fire resistant brick, is characterized in that：In weight percent, raw material be aluminium hydroxide 25～
35%th, flint clay grog 10～30%, kyanite 10～30%, binding agent 35～50%, based on above-mentioned raw materials, base per ton
Plinth raw material adds expandable polystyrene ball 1.0～2.0m3, sawdust 0.3～0.5m3；Described binding agent is Kaolin or aluminium oxide
Cement.
2. mullite light heat-insulating fire resistant brick according to claim 1, is characterized in that：The aluminium content of described aluminium hydroxide >=
30%, granularity is 200～325 mesh；In described flint clay grog, aluminium content is 42～55%, and granularity is 200～325 mesh；Described
In kyanite, aluminium content is 48～58%, and granularity is 180～325 mesh；The granularity of described binding agent is 200～325 mesh；Described contain
Amount is all weight percentage.
3. mullite light heat-insulating fire resistant brick according to claim 1, is characterized in that：Described expandable polystyrene ball be by
The spherical particle that the former grain of expandable polystyrene is formed after high-temperature steam processing, unit weight is 15～20kg/m3, granularity is
0.5～1.5mm；Described sawdust is sieved with 14 eye mesh screens, and be then soaked in water process, and soak time is no less than 30 days.
4. the production method of the mullite light heat-insulating fire resistant brick described in a kind of claim 1, including weighing raw material, batch mixing, one-tenth
Type, drying and burn till, is characterized in that：Basic material aluminium hydroxide, flint clay grog, kyanite, binding agent are mixed in proportion,
Stir；It is subsequently adding expandable polystyrene bead, sawdust, be uniformly mixed；Add the weight of water, basic material and water
Amount ratio is 1.0～1.75：1, the muddy material of flowing is made in stirring；It is then injected into die casting and becomes adobe, after brick bat drying
Load kiln；Adobe is heated to 1350～1400 DEG C of high temperature from room temperature, is incubated 2～3h, burns till；
The firing temperature system that adobe is heated to high temperature from room temperature is：Adobe is warming up to 700～750 by room temperature through 8～10h
DEG C, it is incubated 1～1.5h；It is warming up to 1000～1050 DEG C through 5～6h, be incubated 1.5～2h；It is warming up to 1250～1300 through 5～6h
DEG C, it is incubated 1～1.5h；It is warming up to 1350～1400 DEG C through 2～3h, be incubated 2～3h；Then start to lower the temperature, by 1350～1400
DEG C it is cooled to 1100～1150 DEG C through 8～10h, be incubated 1～1.5h；It is cooled to 800～850 DEG C through 7～7.5h again, finally natural
It is cooled to 100 DEG C, kiln discharge.
5. production method according to claim 4, is characterized in that：Described brick bat drying divides two sections to carry out, and first paragraph is low
Temperature is dried, and baking temperature is 20～35 DEG C, and drying time is 24～36h；Second segment be force drying, baking temperature be 90～
110 DEG C, drying time is 24～36h, and after being dried, raw brick moisture content mass content controls below 5%.
6. production method according to claim 5, is characterized in that：Honeycomb aluminium alloy is adopted to dry supporting plate during brick bat drying,
Carry ventilating drainage hole on aluminium alloy plate, aluminium alloy plate is also laid with cotton layer, using viscous between aluminium alloy plate and cotton layer
Mixture bonds.
7. the production method according to any one of claim 4-6, is characterized in that：The aluminium content of described aluminium hydroxide >=
30%, granularity is 200～325 mesh；In described flint clay grog, aluminium content is 42～55%, and granularity is 200～325 mesh；Described
In kyanite, aluminium content is 48～58%, and granularity is 180～325 mesh；The granularity of described binding agent is 200～325 mesh；Described contain
Amount is all weight percentage.
8. the production method according to any one of claim 4-6, is characterized in that：Described mould is wood mold coupled, mold side
The upper surface of frame is provided with groove, is inlaid with iron block in groove, and the width of described bottom portion of groove is more than the top of groove, the shape of iron block
Shape and groove match, the cross section of described groove is trapezoidal or square.
9. according to claim 8 wood mold coupled, it is characterized in that：Described wood mold coupled for square, iron block is two or four
Individual, it is respectively symmetrically and is distributed in wood mold coupled relative both sides, the thickness of iron block is 2.8-5mm.
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| CN106747634B (en) * | 2016-12-05 | 2020-02-14 | 武汉科技大学 | Mullite light refractory material and preparation method thereof |
| CN108117400B (en) * | 2017-11-17 | 2020-09-29 | 济源市耐火炉业有限公司 | Light high-aluminum refractory brick and preparation method thereof |
| CN110041084A (en) * | 2018-05-21 | 2019-07-23 | 济源市涟源炉业有限公司 | A kind of mullite insulating fire brick and preparation method thereof |
| CN108557779A (en) * | 2018-07-03 | 2018-09-21 | 贵州大学 | A kind of method of ardealite and flyash relieving haperacidity coproduction mullite firebrick |
| CN111233496A (en) * | 2018-11-29 | 2020-06-05 | 河南鑫诚耐火材料股份有限公司 | Mullite heat-insulating refractory brick and preparation method thereof |
| CN109626977A (en) * | 2019-02-27 | 2019-04-16 | 佛山石湾鹰牌陶瓷有限公司 | The preparation method of lightweight thermal insulation brick |
| CN111116172A (en) * | 2019-12-31 | 2020-05-08 | 广东金刚新材料有限公司 | Low-density mullite heat-insulating brick and preparation method thereof |
| CN113511887A (en) * | 2021-04-02 | 2021-10-19 | 武汉职业技术学院 | Multistage-pore mullite light heat-insulating brick and preparation method thereof |
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| EP2088134A1 (en) * | 2007-12-19 | 2009-08-12 | Imerys Kiln Furniture Hungary Ltd.hu | Lightweight Ceramic Material |
| CN101768005A (en) * | 2010-01-26 | 2010-07-07 | 郑州东方炉衬材料有限公司 | Light high-alumina insulating firebrick and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2088134A1 (en) * | 2007-12-19 | 2009-08-12 | Imerys Kiln Furniture Hungary Ltd.hu | Lightweight Ceramic Material |
| CN101768005A (en) * | 2010-01-26 | 2010-07-07 | 郑州东方炉衬材料有限公司 | Light high-alumina insulating firebrick and preparation method thereof |
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Denomination of invention: Mullite lightweight thermal insulation refractory brick and its production method Effective date of registration: 20231102 Granted publication date: 20170215 Pledgee: Henan Xinmi Rural Commercial Bank Co.,Ltd. Pledgor: ZHENGZHOU ORIENTAL LINING MATERIAL CO.,LTD. Registration number: Y2023980063744 |