CN106747316A - A kind of method that utilization flyash and shale prepare thermo store honeycomb ceramic - Google Patents
A kind of method that utilization flyash and shale prepare thermo store honeycomb ceramic Download PDFInfo
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- CN106747316A CN106747316A CN201611039616.5A CN201611039616A CN106747316A CN 106747316 A CN106747316 A CN 106747316A CN 201611039616 A CN201611039616 A CN 201611039616A CN 106747316 A CN106747316 A CN 106747316A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 50
- 239000010881 fly ash Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 23
- 241000264877 Hippospongia communis Species 0.000 claims abstract description 56
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 239000010433 feldspar Substances 0.000 claims abstract description 16
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 239000000314 lubricant Substances 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000007603 infrared drying Methods 0.000 claims abstract description 7
- -1 shale Substances 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000010453 quartz Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 12
- 229940084030 carboxymethylcellulose calcium Drugs 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 244000068988 Glycine max Species 0.000 claims description 5
- 235000010469 Glycine max Nutrition 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 239000002383 tung oil Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract description 12
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 description 16
- 229910052863 mullite Inorganic materials 0.000 description 10
- 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 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010304 firing Methods 0.000 description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 235000012222 talc Nutrition 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 241000256844 Apis mellifera Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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- C—CHEMISTRY; METALLURGY
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
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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
- 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
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/606—Drying
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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Abstract
The invention discloses a kind of method that utilization flyash and shale prepare thermo store honeycomb ceramic, shale, feldspar, quartzy three kinds of raw materials were crushed to 250 mesh sieves respectively；Flyash crosses 250 mesh sieves；Above-mentioned powder is mixed, gained compound is middle again to add binding agent, lubricant and water, 20 30min is mixed in kneader and obtains plastic pug；Pugging is carried out to plastic pug with vacuum deairing machine, then old good pug is obtained through old 36 48h；Old good pug is extruded into honeycomb green body by vertical extruder；The honeycomb green body of extrusion is put into micro-wave oven and is shaped, be then placed in drying 1 2h in infrared drying oven；Heat up 1,140 1220 DEG C and be fired into ceramic honey comb thermal store.After tested, thermal diffusion coefficient is 0.88 1.01mm under normal temperature of the present invention2/ s, thermal conductivity is 1.7 2.2W/ (mK), and storage density is 1180 1240J/cm3, room temperature to 600 DEG C of thermal shocks circulates 30 times and do not ftracture.
Description
Technical field
The invention belongs to environmental protection and energy saving and field of new, and in particular to one kind prepares heat accumulation honeybee using flyash and shale
The method of nest ceramics.
Background technology
In Solar Energy Heat Utilization System, due to the discontinuity and unstability of solar energy, it usually needs set heat accumulation system
Unite to ensure its continuous operation.According to the difference of heat accumulation mode, heat accumulating has sensible heat heat accumulation, latent heat of phase change storage thermally and chemically anti-
Answer the class of heat accumulation three.Sensible heat heat accumulation is the thermal capacity using heat accumulating, realizes storing by being raised and lowered for material temperature
Heat, its principle is simple, and technology maturation is the most widely used heat accumulation mode.Ceramics are good etc. because of its high temperature resistant, chemical stability
Advantage, is a kind of heat accumulating of great potential.
Heat accumulation ceramics common at present are generally mullite, cordierite and aluminum oxide etc., and its cost of material is higher, burns
High into temperature, energy consumption is big.Chinese invention patent《Thermal storage ceramic material and preparation method thereof》(CN103304226A) one is disclosed
Plant the method for preparing dichroite-mullite matter ceramics as primary raw material with cordierite, talcum and aluminum oxide.Chinese invention patent
《A kind of Cordierite-mullite honeycomb ceramic heat accumulator and preparation method》(CN104909732A) disclose it is a kind of with mullite,
The method that Suzhou soil and talcum etc. prepare dichroite-mullite honeycomb ceramic heat storage for primary raw material.It is further reduction
Cost, the Chinese patent of Bao Qifu《Honeycomb ceramic heat accumulator and its manufacture method prepared by a kind of utilization rare earth tailings》Using dilute
Native tailings and bauxite are primary raw material, and honeycomb ceramic heat accumulator has been burnt till at 1370-1390 DEG C.The Chinese patent of Chen Ping
《A kind of method that utilization abandoned mine slag prepares environmental protection type honeycomb ceramic heat storage body》Using red shale waste material, abandoned mine slag, cullet etc.
It is primary raw material, repressed shaping, the honeycomb ceramic heat accumulator of laser sintered system.Using waste residue or waste material can reduce raw material into
This, but still suffer from the shortcomings of firing temperature is low, thermal conductivity is relatively low.
Flyash is the fine ash that catching is got off from the flue gas after coal combustion, is that the primary solids of coal-burning power plant's discharge are discarded
Thing, its main component is SiO2With Al2O3, and particle is more carefully without the levigate raw material that can be used as Production of Ceramics.Chinese invention is special
Profit《A kind of fly ash base accumulation of heat ceramic honey comb and preparation method thereof》(CN102875128A) one kind is disclosed with flyash and burning
Knot auxiliary agent is primary raw material, and the method for preparing ceramic honey comb is burnt till at 1200-1450 DEG C, with cost of material is low, intensity is high
The advantages of, but its firing temperature is higher, and thermal conductivity is relatively low.
The content of the invention
The object of the invention is providing a kind of method that utilization flyash and shale prepare thermo store honeycomb ceramic, the method preparation
Heat accumulation ceramics storage density is big, good thermal shock, thermal conductivity are more excellent, and firing temperature is low, low production cost.
It is as follows using technical scheme to reach above-mentioned purpose：
A kind of method that utilization flyash and shale prepare thermo store honeycomb ceramic, comprises the following steps：
1) pretreatment of raw material：Shale, feldspar, quartzy three kinds of raw materials are crushed to below 5mm, then use ball mill grinding respectively
4h-10h simultaneously crosses 250 mesh sieves；Flyash crosses 250 mesh sieves；
2) dispensing and mixing：Above-mentioned flyash, shale, feldspar and quartz powder materials are mixed, the middle addition again of gained compound
Binding agent, lubricant and water, mixing 20-30min obtains plastic pug in kneader；
3) pugging with it is old：Pugging is carried out to plastic pug with vacuum deairing machine, then obtains old good through old 36-48h
Pug；
4) honeycomb body extrusion：Old good pug is extruded into honeycomb green body by vertical extruder；
5) body drying：The honeycomb green body of extrusion is put into the 10-20min that shaped in micro-wave oven, is then placed in infrared dry
1-2h is dried in dry case；
6) base substrate burns till：Dried base substrate is put into high temperature furnace, 1140-1220 DEG C is warming up to and is fired into honeycomb pottery
Porcelain thermal store.
By such scheme, each powder is by mass percentage in step 2：
Flyash 30-45wt%, shale 5-35wt%, feldspar 15-20wt%, quartz 15-30wt%；Water is in compound
Addition be 15-20wt%.
By such scheme, binding agent described in step 2 is carboxymethylcellulose calcium (CMC)；Binding agent adding in compound
Dosage is 3-5wt%.
By such scheme, lubricant described in step 2 is one kind or any mixing in tung oil, soya-bean oil；Lubricant is mixed
It is 3-5wt% to close the addition in material.
By such scheme, the extrusion pressure of step 4 extruder is 2-4MPa.
By such scheme, microwave power described in step 5 is 5kW, and frequency is 2450MHz ± 50MHz；In infrared drying oven
Drying temperature is at 100-110 DEG C.
By such scheme, 3~5 DEG C/min of step 6 high temperature furnace heating rate.
The beneficial effects of the invention are as follows：
It is with low cost, economize on resources.Flyash is a kind of solid waste, and the utilization rate for improving flyash can be realized giving up
Thing is effectively utilized, and reduces environmental pollution.Shale is used as a kind of low-grade clay, and rich reserves are cheap.
Combination property is good.It is primary raw material, page that ceramic honey comb thermal store prepared by the present invention uses flyash and shale
Rock promotes the generation of liquid phase at high temperature, contributes to the disintegration of fly ash float structure, so as to floating bead as template, short cylinder is not
Carry out stone intersection and grow into shell-like structure, with good thermal property, its thermal conductivity is higher than Chinese invention patent《A kind of flyash
Base accumulation of heat ceramic honey comb and preparation method thereof》(CN102875128A) the thermal conductivity 1.32-1.48W/ (mK) of ceramics in.Simultaneously
Because the mullite shell-like structure contributes to relaxed stress, improve thermal shock resistance, warm is using heat accumulation system in can meeting solar energy
For the performance requirement of heat accumulating in system.Additionally, feldspar can dissolve clay, stone as the liquid phase that flux is formed at high temperature
The raw materials such as English, Al2O3And SiO2Interact in the liquid phase, promote the formation of mullite crystal and grow up, while feldspar melts
The liquid phase for being formed afterwards can fill base substrate space, increase consistency, improve the mechanical strength of base substrate.Quartz is in ceramic firing process
Volumetric expansion serve the effect that compensation base substrate shrinks, while skeleton of the quartz particles as base substrate, serve enhanced, subtract
The possibility of blank deformation is lacked.In addition, carboxymethylcellulose calcium (CMC) is used for improving the plasticity of plastic pug as binding agent,
Strengthen the intensity of ceramic honey comb green compact, tung oil, soya-bean oil can improve the wetability of powder as lubricant, between reduction powder particles
And the friction between powder and die wall, promote the density increase of extrusion base substrate and homogenize.
Energy-saving and emission-reduction.Ceramic honey comb thermal store firing temperature prepared by the present invention is 1140-1220 DEG C, compared to existing skill
The firing temperature of art is relatively low, energy saving.
Brief description of the drawings
Fig. 1：Embodiment 1 prepares the electron-microscope scanning figure of heat accumulation ceramics.
Specific embodiment
Following examples further explain technical scheme, but not as limiting the scope of the invention.
Embodiment 1
A kind of method that utilization flyash and shale prepare middle temperature thermo store honeycomb ceramic, it comprises the following steps：
1. pretreatment of raw material：By shale, feldspar, three kinds of raw materials of quartz respectively with crusher in crushing to below 5mm, then use ball
Grinding machine grinds 4h and crosses 250 mesh sieves, and the direct mesh sieve of mistake 250 of flyash is standby；
2. dispensing and mixing：By flyash, shale, feldspar and quartz according to：Flyash 30wt%, shale 35wt%, length
Stone 20wt%, the proportioning of quartz 15wt% mix 2h in batch mixer, and middle addition 3wt% binding agents, 4wt% lubricate compound again
Agent and 15wt% water, mixing 20min obtains plastic pug in kneader.
The binding agent is carboxymethylcellulose calcium (CMC), and lubricant is tung oil；
3. pugging with it is old：Pugging is carried out to plastic pug with vacuum deairing machine, then old good mud is obtained through old 40h
Material；
4. honeycomb body is extruded:By old good pug by vertical extruder extrude honeycomb green body, extruder squeeze
Go out pressure for 3MPa；
5. body drying：The honeycomb green body of extrusion is put into the 10min that shaped in micro-wave oven, infrared drying oven is then placed in
In dry 1.5h at 110 DEG C；The microwave power is 5kW, and frequency is 2450MHz；
6. base substrate burns till：Dried base substrate is put into high temperature furnace, (less than 1000 DEG C heating rates are burnt till through 1140 DEG C
It is 5 DEG C/min, more than 1000 DEG C heating rates are 3 DEG C/min) obtain ceramic honey comb thermal store；
After tested, the storage density of thermo store honeycomb ceramic of the invention is 1180J/cm3, thermal conductivity is 1.702W/ (m
K), from room temperature to 600 DEG C through not ftractureed after thermal shock 30 times, high comprehensive performance.
As shown in figure 1, the mullite that short cylinder is can be seen that from microscopic appearance crosses one another and grows into shell-like structure,
The mullite shell-like structure contributes to relaxed stress, improves thermal shock resistance.The liquid phase being distributed in around mullite simultaneously is filled with
Ceramic internal porosity, promotes densification, improves the heat accumulation and heat conductivility of ceramics.
Comparative example 1
It is 65% that shale is all replaced with into flyash, i.e. flyash proportion, repeats the design of embodiment 1.
After tested, the storage density of the thermo store honeycomb ceramic is 1103J/cm3, embodiment 1 is close compared with the heat accumulation in comparative example 1
Degree improves 6.98%；Thermal conductivity is 1.532W/ (mK), and comparative example 1 reduces 11% compared with the thermal conductivity of embodiment 1；From room
Temperature after thermal shock 30 times to 600 DEG C through not ftractureing, and thermal shock resistance is good.
Comparative example 2
It is 65% that flyash is all replaced with into shale, i.e. shale proportioning, repeats the design of embodiment 1.
After tested, the storage density of the thermo store honeycomb ceramic is 1055J/cm3, embodiment 1 is close compared with the heat accumulation in comparative example 2
Degree improves 11.85%；Thermal conductivity is 1.570W/ (mK), and comparative example 2 reduces 8% compared with the thermal conductivity of embodiment 1；From room
To 600 DEG C through having crackle to occur after thermal shock 30 times, intensity declines 82.5% to temperature, and thermal shock resistance is poor.
Embodiment 2
A kind of method that utilization flyash and shale prepare middle temperature thermo store honeycomb ceramic, it comprises the following steps：
1. pretreatment of raw material：By shale, feldspar, three kinds of raw materials of quartz respectively with crusher in crushing to below 5mm, then use ball
Grinding machine grinds 6h and crosses 250 mesh sieves, and the direct mesh sieve of mistake 250 of flyash is standby；
2. dispensing and mixing：By flyash, shale, feldspar and quartz according to：Flyash 40wt%, shale 15wt%, length
Stone 20wt%, the proportioning of quartz 25wt% mix 2.5h in batch mixer, and middle addition 5wt% binding agents, 5wt% moisten compound again
Lubrication prescription and 18wt% water, mixing 25min obtains plastic pug in kneader.
The binding agent is carboxymethylcellulose calcium (CMC), lubricant soya-bean oil；
3. pugging with it is old：Pugging is carried out to plastic pug with vacuum deairing machine, then old good mud is obtained through old 48h
Material；
4. honeycomb body is extruded:By old good pug by vertical extruder extrude honeycomb green body, extruder squeeze
Go out pressure for 4MPa；
5. body drying：The honeycomb green body of extrusion is put into the 15min that shaped in micro-wave oven, infrared drying oven is then placed in
In dry 2h at 110 DEG C；The microwave power is 5kW, and frequency is 2450MHz；
6. base substrate burns till：Dried base substrate is put into high temperature furnace, (less than 1000 DEG C heating rates are burnt till through 1180 DEG C
5 DEG C/min, more than 1000 DEG C heating rates, 3 DEG C/min) obtain ceramic honey comb thermal store；
After tested, the storage density of thermo store honeycomb ceramic of the invention is 1193J/cm3, thermal conductivity is 2.090W/ (m
K), from room temperature to 600 DEG C through not ftractureed after thermal shock 30 times, high comprehensive performance.
Embodiment 3
A kind of method that utilization flyash and shale prepare middle temperature thermo store honeycomb ceramic, it comprises the following steps：
1. pretreatment of raw material：By shale, feldspar, three kinds of raw materials of quartz respectively with crusher in crushing to below 5mm, then use ball
Grinding machine grinds 10h and crosses 250 mesh sieves, and the direct mesh sieve of mistake 250 of flyash is standby；
2. dispensing and mixing：By flyash, shale, feldspar and quartz according to：Flyash 45wt%, shale 5wt%, feldspar
20wt%, the proportioning of quartz 30wt% mix 2h in batch mixer, compound middle addition 4wt% binding agents, 4wt% lubricants again
With 20wt% water, mixing 30min obtains plastic pug in kneader.
The binding agent is carboxymethylcellulose calcium (CMC), and lubricant is tung oil, soya-bean oil according to 1：1 ratio is prepared；
3. pugging with it is old：Pugging is carried out to plastic pug with vacuum deairing machine, then old good mud is obtained through old 48h
Material；
4. honeycomb body is extruded:By old good pug by vertical extruder extrude honeycomb green body, extruder squeeze
Go out pressure for 4MPa；
5. body drying：The honeycomb green body of extrusion is put into the 10min that shaped in micro-wave oven, infrared drying oven is then placed in
In dry 1.5h at 110 DEG C；The microwave power is 5kW, and frequency is 2450MHz；
6. base substrate burns till：Dried base substrate is put into high temperature furnace, (less than 1000 DEG C heating rates are burnt till through 1220 DEG C
5 DEG C/min, more than 1000 DEG C heating rates, 3 DEG C/min) obtain ceramic honey comb thermal store；
After tested, that thermo store honeycomb ceramic of the invention is 1240J/cm3, thermal conductivity is 2.218W/ (mK), from room temperature
To 600 DEG C through not ftractureed after thermal shock 30 times, high comprehensive performance.
After tested, the bulk density of middle temperature ceramic honey comb thermal store of the invention reaches 2.40-2.44g/cm3, under normal temperature
(25 DEG C) thermal diffusion coefficient is 0.88-1.01mm2/ s, thermal conductivity is 1.7-2.2W/ (mK), and normal temperature (25 DEG C) is to 500 DEG C
Storage density is 1180-1240J/cm3, room temperature to 600 DEG C of thermal shocks circulates 30 times and do not ftracture.Ceramic honey comb thermal store of the invention
Suitable for the heat reservoir of solar thermal utilization middle-temperature section (100-500 DEG C).
The bound of each raw material and each raw material of the invention cited by the present invention, interval value, and technological parameter is (such as
Temperature, time etc.) bound, interval value can realize the present invention, embodiment numerous to list herein.
Claims (7)
1. a kind of method that utilization flyash and shale prepare thermo store honeycomb ceramic, it is characterised in that comprise the following steps：
1) pretreatment of raw material：Shale, feldspar, quartzy three kinds of raw materials are crushed to below 5mm, then use ball mill grinding 4h- respectively
10h simultaneously crosses 250 mesh sieves；Flyash crosses 250 mesh sieves；
2) dispensing and mixing：Above-mentioned flyash, shale, feldspar and quartz powder materials are mixed, middle addition bonds gained compound again
Agent, lubricant and water, mixing 20-30min obtains plastic pug in kneader；
3) pugging with it is old：Pugging is carried out to plastic pug with vacuum deairing machine, then old good mud is obtained through old 36-48h
Material；
4) honeycomb body extrusion：Old good pug is extruded into honeycomb green body by vertical extruder；
5) body drying：The honeycomb green body of extrusion is put into the 10-20min that shaped in micro-wave oven, infrared drying oven is then placed in
In dry 1-2h；
6) base substrate burns till：Dried base substrate is put into high temperature furnace, 1140-1220 DEG C is warming up to and is fired into ceramic honey comb storage
Hot body.
2. the method for preparing thermo store honeycomb ceramic using flyash and shale as claimed in claim 1, it is characterised in that in step 2
Each powder is by mass percentage：
Flyash 30-45wt%, shale 5-35wt%, feldspar 15-20wt%, quartz 15-30wt%；Water adding in compound
Dosage is 15-20wt%.
3. the method for preparing thermo store honeycomb ceramic using flyash and shale as claimed in claim 1, it is characterised in that in step 2
The binding agent is carboxymethylcellulose calcium；Addition of the binding agent in compound is 3-5wt%.
4. the method for preparing thermo store honeycomb ceramic using flyash and shale as claimed in claim 1, it is characterised in that in step 2
The lubricant is one kind or any mixing in tung oil, soya-bean oil；Addition of the lubricant in compound is 3-5wt%.
5. the method for preparing thermo store honeycomb ceramic using flyash and shale as claimed in claim 1, it is characterised in that step 4 is squeezed
The extrusion pressure for going out machine is 2-4MPa.
6. the method for preparing thermo store honeycomb ceramic using flyash and shale as claimed in claim 1, it is characterised in that step 5 institute
Microwave power is stated for 5kW, frequency is 2450MHz ± 50MHz；Drying temperature is at 100-110 DEG C in infrared drying oven.
7. the method for preparing thermo store honeycomb ceramic using flyash and shale as claimed in claim 1, it is characterised in that step 6 is high
Warm 3~5 DEG C/min of stove heating rate.
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| CN109233753A (en) * | 2018-12-03 | 2019-01-18 | 安徽恒明工程技术有限公司 | A kind of phase change heat storage material and preparation method thereof |
| CN109504353A (en) * | 2018-12-24 | 2019-03-22 | 中国有色集团晋铝耐材有限公司 | A kind of high specific heat capacity heat-storing material and preparation method thereof |
| CN111018560A (en) * | 2019-12-24 | 2020-04-17 | 北京大学 | Multi-scale pore honeycomb ceramic and preparation method thereof |
| CN112552022A (en) * | 2020-12-29 | 2021-03-26 | 武汉理工大学 | Method for preparing solar heat storage ceramic by using ferrotitanium slag |
| CN113943555A (en) * | 2021-11-18 | 2022-01-18 | 北京华能长江环保科技研究院有限公司 | Power plant fly ash based high-value heat storage material synthesis system and synthesis method |
| CN114349476A (en) * | 2021-12-27 | 2022-04-15 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of solid heat storage material and solid heat storage material |
| CN116903386A (en) * | 2023-06-08 | 2023-10-20 | 桐乡泰爱斯环保能源有限公司 | Preparation method of fly ash-based honeycomb ceramic |
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| CN103992099A (en) * | 2014-05-20 | 2014-08-20 | 陕西科技大学 | Method for preparing environment-friendly honeycomb ceramic heat accumulator by use of waste slag |
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| CN103992099A (en) * | 2014-05-20 | 2014-08-20 | 陕西科技大学 | Method for preparing environment-friendly honeycomb ceramic heat accumulator by use of waste slag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109233753A (en) * | 2018-12-03 | 2019-01-18 | 安徽恒明工程技术有限公司 | A kind of phase change heat storage material and preparation method thereof |
| CN109504353A (en) * | 2018-12-24 | 2019-03-22 | 中国有色集团晋铝耐材有限公司 | A kind of high specific heat capacity heat-storing material and preparation method thereof |
| CN109504353B (en) * | 2018-12-24 | 2020-10-16 | 中国有色集团晋铝耐材有限公司 | High specific heat capacity heat storage material and preparation method thereof |
| CN111018560A (en) * | 2019-12-24 | 2020-04-17 | 北京大学 | Multi-scale pore honeycomb ceramic and preparation method thereof |
| CN111018560B (en) * | 2019-12-24 | 2021-01-05 | 北京大学 | Multi-scale pore honeycomb ceramic and preparation method thereof |
| CN112552022A (en) * | 2020-12-29 | 2021-03-26 | 武汉理工大学 | Method for preparing solar heat storage ceramic by using ferrotitanium slag |
| CN112552022B (en) * | 2020-12-29 | 2023-05-02 | 武汉理工大学 | Method for preparing solar heat storage ceramic by using ferrotitanium slag |
| CN113943555A (en) * | 2021-11-18 | 2022-01-18 | 北京华能长江环保科技研究院有限公司 | Power plant fly ash based high-value heat storage material synthesis system and synthesis method |
| CN114349476A (en) * | 2021-12-27 | 2022-04-15 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of solid heat storage material and solid heat storage material |
| CN116903386A (en) * | 2023-06-08 | 2023-10-20 | 桐乡泰爱斯环保能源有限公司 | Preparation method of fly ash-based honeycomb ceramic |
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