CN106927839B - A kind of micropore insulation brick - Google Patents
A kind of micropore insulation brick Download PDFInfo
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- CN106927839B CN106927839B CN201710183863.0A CN201710183863A CN106927839B CN 106927839 B CN106927839 B CN 106927839B CN 201710183863 A CN201710183863 A CN 201710183863A CN 106927839 B CN106927839 B CN 106927839B
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- brick
- insulation brick
- silicon dioxide
- micropore
- dioxide gel
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- 239000011449 brick Substances 0.000 title claims abstract description 122
- 238000009413 insulation Methods 0.000 title claims abstract description 96
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 71
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 26
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 25
- 239000011435 rock Substances 0.000 claims abstract description 22
- 239000003595 mist Substances 0.000 claims abstract description 17
- 239000010451 perlite Substances 0.000 claims description 13
- 235000019362 perlite Nutrition 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 238000000748 compression moulding Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052594 sapphire Inorganic materials 0.000 claims description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- 239000005543 nano-size silicon particle Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 abstract description 13
- 238000004321 preservation Methods 0.000 abstract description 13
- 229920000742 Cotton Polymers 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 9
- 238000002360 preparation method Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 7
- 238000003303 reheating Methods 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000011324 bead Substances 0.000 description 11
- 238000007667 floating Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000011056 performance test Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000007767 bonding agent Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 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 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
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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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- 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
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- C04B2235/3427—Silicates other than clay, e.g. water glass
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Abstract
The present invention relates to a kind of micropore insulation bricks, and with modified pearl rock, silicon dioxide gel and micro mist aluminium oxide are raw material, are made according to weight percent.The usage amount of silicon dioxide gel is reduced under the premise of guaranteeing insulating brick bond strength, to reduce the reheating linear change rate on reheating of product, improves the stability of product, and insulation brick of the invention be it is non-burning brick, preparation process simply easily realizes that low energy consumption, pollute it is small, it is environmentally friendly.The lower thermal conductivity of the high intensity of refractory brick and heat-preservation cotton is perfectly combined and is integrated by the present invention, it has started new era of lightweight flame-proof thermal insulation material, product is provided simultaneously with that thermal conductivity is low, and body is close small, it is light-weight, the high feature of compressive resistance, and cost performance is high, long service life, it is easy for construction, harm to the human body is small, good heat insulating, widened the energy-saving new route of thermal kiln furnace, for traditional thermal kiln furnace structural improvement, energy-saving provide reliable material and guarantee.
Description
Technical field
The invention belongs to high temperature kiln thermal insulation material technical fields, and in particular to a kind of micropore insulation brick.
Background technique
In industrial circle, all kiln bodies being higher than under normal temperature environment and furnace body, especially high temperature kiln, high-temperature smelting pot, in order to
Heat losses are prevented, use thermal insulation material in furnace body or kiln body.The structure of Industrial Stoves is usually flame retardant coating, heat preservation from inside to outside
Layer, steel frame construction layer, flame retardant coating are located at the innermost layer of kiln, directly contact with high-temperature medium, and therefore, fire resisting layer material must have
Standby very high fire resistance；Insulating layer is located at the middle layer of kiln, not direct to contact with high-temperature medium, primarily serves heat preservation, prevents
The only effect of heat losses, the requirement to insulating layer is usually: thermal conductivity is small, and density is small, compressive resistance height etc., this is to heat preservation
The most basic requirement of layer.With the development of production and science and technology, people put forward higher requirements heat preservation layer material, for example, it is desirable to
Heat preservation layer material has smaller density and a thermal conductivity, and higher thermal insulation property, cost performance is high, economical, environmentally friendly, light, be easy to
Operation construction etc..
Currently, existing thermal insulation material is mostly the refractory cotton of fireproof insulation brick or alumina silicate series, fireproof insulation brick has
Certain bearing strength, but thermal coefficient is big, heat insulation effect is bad, and expensive, economic pressures are caused to enterprise, and
Existing insulating brick density and weight are relatively large, and which adds the load-bearing of steel construction, and since weight and volume is big, give
Construction is made troubles, and construction efficiency is low, and comprehensive performance is not good enough.Heat preservation of the refractory cotton of alumina silicate series than fireproof insulation brick is imitated
Fruit is good, but refractory cotton absolutely not bearing strength.The two existing defects equal in actual use, cannot preferably meet use
It is required that.
Summary of the invention
The technical problems to be solved by the invention are in view of the above shortcomings of the prior art, to provide a kind of micropore insulation
The lower thermal conductivity of the high-mechanic intensity of fireproof insulation brick and fire resistant heat preserving cotton is perfectly combined and is integrated, it is resistance to have started lightweight by brick
New era of fiery thermal insulation material.Insulation brick thermal conductivity of the invention is low, and body is close small, light-weight, and compressive resistance is high, service life
It is long, good heat insulating, cost performance height；It is that one kind is non-burning brick, it is small to human body and environmental hazard；Due to light-weight, fortune is reduced
Defeated expense, the more existing fireproof insulation brick of comprehensive performance and heat-preservation cotton are good, have widened the energy-saving new route of thermal kiln furnace, have been to pass
Unite thermal kiln furnace structural improvement, energy-saving provide reliable material and guarantee.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.
A kind of micropore insulation brick proposed according to the present invention, the weight percent of raw material and each raw material are as follows:
Modified pearl rock 60-85%,
Silicon dioxide gel 10-35%,
Micro mist aluminium oxide 1-12%.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
A kind of micropore insulation brick above-mentioned, wherein each raw material and its weight percent are as follows:
Modified pearl rock 75%,
Silicon dioxide gel 20%,
Micro mist aluminium oxide 5%.
Further, the silicon dioxide gel is low alkali high-viscosity nano silicon dioxide gel, pH=9-10；Institute
Stating micro mist aluminium oxide is α-Al2O3Ultramicro-powder, d50=2 μm.
Further, the modified pearl rock is to obtain perlite ore by modification, specific method of modifying are as follows: will
It is 20-30 mesh that perlite ore, which is crushed to partial size, then carries out expanding treatment at 1010-1030 DEG C, then with compound acid soak
For 24 hours, perlite is separated from Compound-acid, is then dried.
Further, the Compound-acid be nitric acid, phosphoric acid, formic acid, hydrochloric acid, in trichloroacetic acid two or more is mixed
It closes.
Further, the preparation method of the micropore insulation brick specifically: by modified pearl rock, silicon dioxide gel and micro-
Powder aluminium oxide feeding according to the weight ratio, is put into blender and stirs evenly, then the raw material stirred evenly is put into the steel of hydraulic press
In molding jig, molding insulation brick is placed 4-5h, then in 120-150 DEG C by the compression moulding under the pressure of 7-12MPa naturally
Lower drying, drying time be for 24 hours to get arrive finished microporous insulation brick.
Designing points of the invention are:
(1), perlite ore is not flame-proof thermal insulation material, and the present inventor will not have refractory material spy by modification
Property perlite ore be used as and prepare the raw material of fireproof insulation brick, and achieve effect well, on the one hand remain heat preservation
On the other hand the heat insulation effect of brick greatly reduces the density of insulating brick, alleviate the weight of insulating brick, not only greatly reduce
Transportation cost, reduces Enterprise Transportation expense, and is made construction get up to be more easier in construction, improved and applied due to light
Work efficiency rate.
(2) chemical component of perlite ore are as follows: SiO2、Al2O3、Fe2O3、CaO、K2O、Na2O、MgO、H2O, due to containing
Alkali metal oxide keeps the refractoriness of perlite ore not high, and the present inventor is contained by the alkali metal in modified reduction perlite
Amount, improves the fire resistance of perlite, will not be raw material of the perlite ore as fireproof insulation brick of flame-proof thermal insulation material, and
And since modified perlite has the advantages that light, density is low, thermal coefficient is low, chemical stability is good, as insulation brick
Raw material, greatly reduce insulation brick product body is close and thermal conductivity, improve its thermal insulation property.
(3) fine silica powder is a kind of universal high temperature adhesives of comparison, the silicon dioxide gel of the present invention and two
Ultrafine silica powder, which is compared, has bigger specific surface area and more efficient binding performance.During insulating brick preparation, dioxy
SiClx colloidal sol actually plays the role of bonding agent, and the reheating linear change rate on reheating of insulating brick can be effectively reduced in bonding agent dosage less, together
When bonding agent dosage guarantee the higher bond strength of insulating brick again.Innovation of the invention is with relatively small weight hundred
Divide the silicon dioxide gel of ratio to realize the lesser reheating linear change rate on reheating of insulating brick and biggish bond strength simultaneously, reduces simultaneously
The density of insulating brick itself.
(4) the micro mist aluminium oxide that the present invention uses is α-Al2O3Ultramicro-powder, the d of alumina particle in powder50=2 μm, grain
Diameter is small, is evenly distributed, and improves the lowest total of the melting point of aluminium oxide, to improve the thermal insulation property of product.
Micropore insulation brick of the invention is a kind of insulating brick, and existing for the insulating layer of high temperature kiln, rather than flame retardant coating
Refractory brick technical indicator and performance requirement it is different.Micropore insulation brick of the invention incorporate existing insulating brick, heat-preservation cotton,
The advantages of blanket, felt, the thermal insulation property of equipment greatly improved, energy conservation and environmental protection complies fully with industrial policy and the society of current country
Meeting demand, accelerate and improves the competitiveness of the image product and its product using unit.
By 5 years industrial verifying phases, the present invention was widely used to ceramics, cleaning coal-fired gasification system, metal at present
In the projects such as furnace, kiln, reaction tower, the pipe network in the fields such as processing, petrochemical industry, power generation.
It is poly- that micropore insulation brick of the invention can substitute floating bead brick, high alumina completely in 1000 DEG C and following field of heat insulating materials
The thermal insulation materials such as light brick, it is advantageous that:
(1) thermal conductivity of the good floating bead brick of heat insulation effect be 0.25W/m ﹒ k, micropore insulation brick thermal conductivity better than its 2 times~2.5
Times.Such as: 400 DEG C of hot face thermal coefficients, the floating bead brick of 0.8 density and the thermal conductivity of diatomite brick in 0.3w/m.k or so, and
The thermal conductivity of micropore insulation brick is in 0.07-0.1w/m.k.
(2) bulk density of the small floating bead brick of bulk density is 0.8~0.9g/cm3, survey as 0.9g/cm3, micropore insulation brick
It can be divided into three types according to the size of bulk density: 0.3g/cm3、0.35g/cm3、0.45g/cm3, guarantor can be mitigated significantly
The weight of warm layer, Structural strength calls of the relative reduction to furnace body, pipeline.
(3) compressive resistance of the high floating bead brick of bearing capacity is 1.5~2.0MPa, and micropore insulation brick is 1.32MPa.In conjunction with respective
Specific gravity, the maximum in actual use piles up altitude conversion, and floating bead brick can pile up 225 meters, and micropore insulation brick is up to 371
Rice.
(4) for thermal insulation property under the premise of insulation layer thickness is constant fortunately, micropore insulation brick can substantially reduce coldface temperature；
Under the premise of coldface temperature is immovable, micropore insulation brick can substantially reduce insulation layer thickness.And micropore insulation brick can be with
Big special-shaped product is compared, building mortar layer can be reduced in this way, is conducive to improve thermal insulation property.
(5) scale error of insulating brick and the small floating bead brick production technology of color difference are the rubbed press machine compacting of ingredient, plate
Furnace is fired, and is a kind of burned brick, belongs to the operation of hand-guided, and insulating brick outer dimension, product color difference not can guarantee.
And micropore insulation brick production technology of the invention is formed with production ceramic tile, the hydraulic press compacting of floor tile, drying, is unburned
Product, whole process are produced by optical sensor automatic location.Product size is accurate and absolutely not color difference, and product condition is good, class is high.
(6) transport breakage rate is small due to raw material and the difference of preparation process, has insulation brick of the invention good tough
Property, thermal energy stability is good, and cracky, the breakage rate of micropore insulation brick of the present invention are not 1% in transit, in floating bead brick transport
Breakage rate be 2~3%.
(7) construction is easy since micropore insulation brick is lighter than floating bead brick by 2/3, so that with micropore insulation brick than applying with floating bead brick
Work is high-efficient, and the brill of micropore insulation brick, cut, cut, the operations such as repairing type are all very easy to.
(8) the high micropore insulation brick raw materials for production price of cost performance is higher, but because being unburned product, overall price is not higher than drift
Pearl brick, and since the present invention is small to environmental hazard, it can promote and improve the product shape of enterprise using micropore insulation brick of the invention
As the price competitiveness with its product.
Micropore insulation of the invention turns to have compared following advantage with alumina silicate fibre class or rock wool heat-preservation product:
(1) the high refractory fibre product of compressive resistance cannot be used to need as shop fixtures, carrying etc. substantially without bearing strength
There is the purposes of certain compressive resistance, the compressive resistance of micropore insulation brick is compared up to 1.32MPa or more, micropore insulation brick
Application range it is wider.
(2) long service life aluminum silicate fibre product contains certain organic matter as bonding agent, and one section is used under high temperature
Meeting dusting after time, and micropore insulation brick is entirely free of organic matter, service life will grow many times.
(3) under high temperature the small fibrous material of shrinking percentage contain 5~8% organic matter, will cause the contraction of material 3~4%, fall
Phenomena such as slag, to influence the quality of production product.Cellucotton, plate, blanket, felt can generate biggish compression ratio, and fibre
Problem of aging is larger.And micropore insulation brick is 0.7% in 1000 DEG C of shrinking percentages, compared with fiber-like or rock cotton insulation material,
Shrinking percentage is very small, thus actual production using when product quality can be effectively ensured.
(4) environmental protection and the simple fibre of waste treatment have some pessimal stimulations to the skin of people, and micropore insulation brick
Then will not.Micropore insulation brick is non-textile, an ancient egg-shaped, holed wind instrument evil will not be generated to human body, environment, without special harmless when such as discarded
Change processing, eliminates the garbage disposal expense of enterprise, reduces enterprise's production cost, increases economic efficiency.
In conclusion a kind of micropore insulation brick of the present invention technically has significant progress, and there is apparent actively effect
Fruit is really a new and innovative, progressive, practical new design.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, special below to lift preferred embodiment, detailed description are as follows.
Detailed description of the invention
Nothing
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Preferred embodiment, to a kind of micropore insulation brick proposed according to the present invention, specific embodiment, structure, feature and its effect,
Detailed description is as follows.
The present invention is a kind of micropore insulation brick, be mainly used for ceramics, cleaning coal-fired gasification system, intermetallic composite coating, petrochemical industry,
In the projects such as furnace, kiln, reaction tower, the pipe networks in fields such as power generation, it is a kind of novel heat preservation layer material, has thermal conductivity small, body
The advantages that density is small, and compressive resistance is high, long service life, cost performance is high, product is free of fiber-like, high volatile material, to ring
The problems such as border is friendly, and micropore insulation brick of the invention is unburned product, and pollutant emission is not present, saves the rubbish of enterprise
Processing cost further decreases enterprise's production cost, increases economic efficiency.
Micropore insulation brick of the invention is made of following component according to weight percent:
Modified pearl rock 60-85%,
Silicon dioxide gel 10-35%,
Micro mist aluminium oxide 1-12%.
Preferably, the raw material proportioning of micropore insulation brick are as follows:
Modified pearl rock 75%,
Silicon dioxide gel 20%,
Micro mist aluminium oxide 5%.
Further, the silicon dioxide gel is low alkali high-viscosity nano silicon dioxide gel, pH=9-10；It is micro-
Powder aluminium oxide is α-Al2O3Ultramicro-powder, alumina powder particle d50=2 μm.
Further, the modified pearl rock is to obtain ordinary pearl rock and ore by modification, specific method of modifying
Are as follows: it is 20-30 mesh that ordinary pearl rock and ore, which is crushed to partial size, and moment expanding treatment is then carried out at 1010-1030 DEG C, then
For 24 hours with compound acid soak, perlite is separated from Compound-acid, is then dried.
Further, the Compound-acid be nitric acid, phosphoric acid, formic acid, hydrochloric acid, in trichloroacetic acid two or more is mixed
It closes.
Micropore insulation brick of the invention be it is non-burning brick, preparation method is simple: by modified pearl rock, silicon dioxide gel and micro-
Powder aluminium oxide feeding according to the weight ratio, is put into blender and stirs evenly, then the raw material stirred evenly is put into the steel of hydraulic press
In molding jig, molding insulation brick is placed 4-5h, then in 120-150 DEG C by the compression moulding under the pressure of 7-12MPa naturally
Lower drying, drying time be for 24 hours to get arrive finished microporous insulation brick.Technical process is simple to operation, to preparation condition without spy
It is different to require, it is easy to accomplish.
Specific embodiment:
Embodiment 1
According to weight percent are as follows: modified pearl rock 60%, silicon dioxide gel 35%, the ratio of micro mist aluminium oxide 5%
Three kinds of raw materials are taken, is put into blender and stirs evenly, then the raw material stirred evenly are put into the steel die of hydraulic press, In
Molding insulation brick is placed 4h naturally, then dried at 150 DEG C by compression moulding under the pressure of 10MPa, and drying time is
For 24 hours to get finished microporous insulation brick is arrived, 1 is shown in Table to its performance test results.
Embodiment 2
According to weight percent are as follows: modified pearl rock 85%, silicon dioxide gel 10%, the ratio of micro mist aluminium oxide 5%
Three kinds of raw materials are taken, is put into blender and stirs evenly, then the raw material stirred evenly are put into the steel die of hydraulic press, In
Molding insulation brick is placed 4h naturally, then dried at 130 DEG C by compression moulding under the pressure of 7MPa, and drying time is
For 24 hours to get finished microporous insulation brick is arrived, 1 is shown in Table to its performance test results.
Embodiment 3
According to weight percent are as follows: modified pearl rock 80%, silicon dioxide gel 19%, the ratio of micro mist aluminium oxide 1%
Three kinds of raw materials are taken, is put into blender and stirs evenly, then the raw material stirred evenly are put into the steel die of hydraulic press, In
Molding insulation brick is placed 5h naturally, then dried at 120 DEG C by compression moulding under the pressure of 12MPa, and drying time is
For 24 hours to get finished microporous insulation brick is arrived, 1 is shown in Table to its performance test results.
Embodiment 4
According to weight percent are as follows: modified pearl rock 70%, silicon dioxide gel 18%, the ratio of micro mist aluminium oxide 12%
Three kinds of raw materials are taken, is put into blender and stirs evenly, then the raw material stirred evenly are put into the steel die of hydraulic press, In
Molding insulation brick is placed 5h naturally, then dried at 150 DEG C by compression moulding under the pressure of 8MPa, and drying time is
For 24 hours to get finished microporous insulation brick is arrived, 1 is shown in Table to its performance test results.
Embodiment 5
According to weight percent are as follows: modified pearl rock 75%, silicon dioxide gel 20%, the ratio of micro mist aluminium oxide 5%
Three kinds of raw materials are taken, is put into blender and stirs evenly, then the raw material stirred evenly are put into the steel die of hydraulic press, In
Molding insulation brick is placed 5h naturally, then dried at 140 DEG C by compression moulding under the pressure of 10MPa, and drying time is
For 24 hours to get finished microporous insulation brick is arrived, 1 is shown in Table to its performance test results.
Embodiment 6
According to weight percent are as follows: modified pearl rock 75%, silicon dioxide gel 20%, the ratio of micro mist aluminium oxide 5%
Three kinds of raw materials are taken, prepare micropore insulation brick under different compression ratios according to above-mentioned preparation method, raw material composition is identical, due to pressure
Contracting obtains the micropore insulation brick of three kinds of models, is respectively according to density size: 0.30g/cm than difference3、0.35g/cm3、
0.45g/cm3, the performance indicator of the micropore insulation brick of these three models and the performance comparison of existing thermal insulation material are as shown in table 2.
The performance test results of each embodiment micropore insulation brick of table 1.
The comparison of the performance indicator of 2. micropore insulation brick of table and existing thermal insulation material
By known to comparison: existing thermal insulation material or be that compressive resistance is high, thermal conductivity and density are big；It is thermal conductivity
Small with density, compressive resistance is low, cannot be provided simultaneously with the performance that density is small, thermal conductivity is small, compressive resistance is high.And existing floating bead
The performance data of brick and heat-preservation cotton also shows same result.
The present invention has obtained unburned insulation brick, the guarantor for high temperature kiln by preferred raw material, formula and preparation process
Warm layer is provided simultaneously with the advantage that density is small, and thermal conductivity is small, compressive resistance is high and reheat linear change is small, collects fireproof insulation brick
The lightweight of high-mechanic intensity and refractory cotton, body are close to be less than one, has started new era of lightweight flame-proof thermal insulation material.With it is traditional
Insulating brick is compared, and insulation brick heat insulation effect of the invention improves 3 times or more, and the density of brick reduces 60% or more, traditional
Insulating brick needs to be sintered in the preparation, not only pollutes environment, but also expend mass energy；Insulation brick of the invention is unburned production
Product, energy conservation and environmental protection can 80% or more energy conservation compared with traditional insulating brick.In transit, due to being according to weight charging, originally
The insulation brick of invention alleviates the weight of brick due to greatly reducing density, therefore can save a large number of expense in transport,
Entreprise cost is reduced, economic benefit is further increased.
Table 3 is the chemical component of micropore insulation brick of the invention:
The chemical component of 3. micropore insulation brick of table
| Chemical component | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | K2O | Na2O | Igloss |
| Weight (%) | 62 | 11 | 1.4 | 4.7 | 3.2 | 2.8 | 2.2 | 12.7 |
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the technical essence of the invention
Any simple modification, equivalent change and modification to the above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (2)
1. a kind of micropore insulation brick, it is characterised in that be made by following raw material according to weight percent:
Modified pearl rock 60-85%,
Silicon dioxide gel 10-35%,
Micro mist aluminium oxide 1-12%；
The method of modifying of the modified pearl rock are as follows: it is 20-30 mesh that perlite ore, which is crushed to partial size, then in 1010-
Expanding treatment is carried out at 1030 DEG C, then for 24 hours with compound acid soak, perlite is separated into drying from Compound-acid；Institute
Compound-acid is stated as two or more mixing in nitric acid, phosphoric acid, formic acid, hydrochloric acid, trichloroacetic acid；
The silicon dioxide gel is low alkali high-viscosity nano silicon dioxide gel, pH=9-10；
The micro mist aluminium oxide is α-Al2O3Ultramicro-powder, d50=2 μm；
The micropore insulation brick is prepared in accordance with the following methods:
By modified pearl rock, silicon dioxide gel and micro mist aluminium oxide feeding according to the weight ratio, be put into blender stir it is equal
It is even, then the raw material stirred evenly is put into the steel die of hydraulic press, the compression moulding under the pressure of 7-12MPa will be molding
Insulation brick places 4-5h naturally, then dries at 120-150 DEG C；The density of gained micropore insulation brick is 0.3-0.45g/
cm3, thermal conductivity is 0.07-0.1w. (m.k))-1, cold crushing strength 1.32-1.87MPa；The micropore insulation brick is for height
Warm kiln insulating layer.
2. micropore insulation brick as described in claim 1, it is characterised in that its raw material and weight percent are as follows:
Modified pearl rock 75%,
Silicon dioxide gel 20%,
Micro mist aluminium oxide 5%.
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| CN109748597B (en) * | 2019-03-20 | 2021-05-28 | 苏州北美国际高级中学 | Method for preparing mullite porous ceramic by precursor mutual gelation |
| CN110803931B (en) * | 2019-12-04 | 2022-05-27 | 焦作鑫昆节能保温材料科技有限公司 | Composite baking-free refractory brick and preparation process thereof |
| CN110950585A (en) * | 2019-12-26 | 2020-04-03 | 浙江路兴环保科技有限公司 | Environment-friendly baking-free brick and manufacturing method thereof |
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| CN101585715A (en) * | 2009-06-24 | 2009-11-25 | 樊金鑫 | Microporous refractory heat-insulating material and manufacturing method thereof |
| CN103553687A (en) * | 2013-11-09 | 2014-02-05 | 宁夏天纵泓光余热发电技术有限公司 | Heat-insulating fireproof pouring material |
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| US8367227B2 (en) * | 2007-08-02 | 2013-02-05 | Applied Materials, Inc. | Plasma-resistant ceramics with controlled electrical resistivity |
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| CN101585715A (en) * | 2009-06-24 | 2009-11-25 | 樊金鑫 | Microporous refractory heat-insulating material and manufacturing method thereof |
| CN103553687A (en) * | 2013-11-09 | 2014-02-05 | 宁夏天纵泓光余热发电技术有限公司 | Heat-insulating fireproof pouring material |
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