CN110395969A - A kind of compound gangue base exterior insulation of crystallite and preparation method thereof - Google Patents

A kind of compound gangue base exterior insulation of crystallite and preparation method thereof Download PDF

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Publication number
CN110395969A
CN110395969A CN201910804204.3A CN201910804204A CN110395969A CN 110395969 A CN110395969 A CN 110395969A CN 201910804204 A CN201910804204 A CN 201910804204A CN 110395969 A CN110395969 A CN 110395969A
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parts
crystallite
gangue
powder
spare
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罗会成
叶辉
林贵彪
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Luoyang Beibao Silicon Nest Technology Co Ltd
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Luoyang Beibao Silicon Nest Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/131—Inorganic additives
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B33/00—Clay-wares
    • C04B33/32—Burning methods
    • C04B33/34—Burning methods combined with glazing
    • C—CHEMISTRY; METALLURGY
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • C—CHEMISTRY; METALLURGY
    • 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
    • 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
    • C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
    • C—CHEMISTRY; METALLURGY
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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
    • C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
    • C—CHEMISTRY; METALLURGY
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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
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • 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
    • 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

Abstract

A kind of compound gangue base exterior insulation of crystallite, the exterior insulation is made of foamed ceramic layer and crystallite finish coat, foamed ceramic layer is prepared from the following raw materials in parts by weight: 70 ~ 85 parts of gangue, 5 ~ 30 parts of ore charge, 5 ~ 10 parts of additive, 0.03 ~ 0.07 part of SiC, 5 ~ 8 parts of foam stabilizer.The present invention is using the poor gangue of at low cost, comprehensive utilization ratio as main material, pass through the adjustment of compounding addition material formula, and between different function component materials particle size effective control, under the premise of water is not added in entire technique whole process, using dry method, prepare a kind of good in economic efficiency, thermal coefficient is small, good heat preservation performance, bulk density is small, and energy-saving and environment-friendly foamed ceramic decorative composite plate.To improve the comprehensive utilization ratio and economic benefit of gangue.

Description

A kind of compound gangue base exterior insulation of crystallite and preparation method thereof
Technical field
The present invention relates to the production technical field of exterior insulation, specifically a kind of compound gangue base of crystallite Foamed ceramic heat-insulating decorative composite board.
Technical background
Association product of the gangue as exploiting colliery can not be used since combustion value is low when coal-fired.Gangue is thrown aside, Occupy tract.Sulfide evolution or leaching in gangue can pollute atmosphere, farmland and water body.Hillock can also spontaneous combustion hair It lights a fire calamity, or in rainy season avalanche, silts river up and cause disaster.China accumulates gangue up to 1,000,000,000 tons or more, will also be discharged every year 100,000,000 tons of gangue.In order to eliminate pollution, from the sixties, many countries start to pay attention to the processing and utilization of gangue.
Currently, there are four aspects for gangue main application: 1. by Simple process, washing has gone out coal from gangue, leads to It crosses screening and therefrom selects colm, while sorting out pyrite.2. mainly middle coal and washing cash mixed combustion with washing.3. making instead of clay For brick-making raw material, good farmland can be dug less.When baking bricks, using the combustible of gangue itself, coal can be saved.But it is above-mentioned this The market sales volume applied a bit is little, deficiency in economic performance, cannot largely consume gangue.4. preparing foamed ceramic using gangue to protect Warm plate has the excellent performances such as fire prevention, waterproof, heat preservation, heat-insulated.Specification is changeable, good in economic efficiency, belongs to gangue essence Good approach.
But the preparation process of bastard coal ground mass exterior insulation in the prior art is wet processing.Pass through Ingredient → ball milling → mist projection granulating → cloth → is burnt into → unloads plate cutting, completes the preparation of bastard coal ground mass exterior insulation. The wet processing causes water consumption big because of the addition and presence of moisture, complex steps, consumes energy higher, production capacity is low, is not able to satisfy The technique production requirement of modern energy conservation and emission reduction, meanwhile, also seriously constrain the production capacity of gangue foamed ceramic.
In conclusion how further increasing value-added content of product prepared by gangue and improving production capacity is present urgent need solution Certainly the problem of.
Summary of the invention
Technical purpose of the invention are as follows: using the poor gangue of at low cost, comprehensive utilization ratio as main material, added by compounding Effective control of particle size, is not added water in entire technique whole process between the adjustment of material formula, and different function component materials Under the premise of, using dry method, prepare a kind of good in economic efficiency, thermal coefficient is small, and good heat preservation performance, bulk density is small, and energy conservation and environmental protection Foamed ceramic decorative composite plate.To improve the comprehensive utilization ratio and economic benefit of gangue.
To realize the above-mentioned technical purpose, the technical scheme adopted by the invention is as follows: a kind of compound gangue base foaming of crystallite Ceramic thermal insulation plate, the exterior insulation are made of foamed ceramic layer and crystallite finish coat, the foamed ceramic layer by with The raw material of lower parts by weight is made: 70 ~ 85 parts of gangue, 5 ~ 30 parts of ore charge, 5 ~ 10 parts of additive, SiC 0.03 ~ 0.07 Part, 5 ~ 8 parts of foam stabilizer；
The crystallite finish coat is prepared from the following raw materials in parts by weight: 33 ~ 50 parts of crystallite frit, 5 ~ 30 parts of ore charge, 5 ~ 15 parts of additive；
The foamed ceramic layer and crystallite finish coat is made of dry process.
Further, the ore charge is kaolin, quartz, albite, potassium feldspar, talcum, calcite and lepidolite At least one of.
Further, the additive is at least one in glass powder, aluminium oxide, silicon carbide, soda ash and barium carbonate Kind.
A kind of preparation method of the compound gangue base exterior insulation of crystallite, comprising the following steps:
Step 1: according to parts by weight, take 70 ~ 85 parts of gangue to be placed in pulverizer the particle for being ground into that partial size is 1 ~ 2cm, Later, transposition is ground into the gangue micro mist that partial size is 180-250 mesh in Vertical Mill, spare；
Step 2: taking ore charge and additive, it is respectively placed in the ore charge for being ground into that partial size is 120-200 mesh in grinding device Powder and partial size are the additive powder of 200 ~ 250 mesh, spare；
Step 3: according to parts by weight, taking 0.03 ~ 0.07 part of SiC to be placed in grinding device and being ground into partial size as 500 ~ 800 mesh SiC powder, it is spare；
Step 4: according to parts by weight, 5 ~ 30 parts and 4 ~ 10 parts of additive powder of ore feed powder made from step 2 are taken, with step Gangue micro mist made from one, SiC powder made from step 3 and 5 ~ 8 portions of foam stabilizers are placed in batch mixer are mixed together Foamed ceramic mixed ingredients are made in 12-25min, spare；
Step 5: according to parts by weight, taking 33 ~ 50 parts of crystallite frit, being placed in grinding in vertical mill and partial size is made is 150-250 Purpose crystallite frit powder, it is spare；
Step 6: according to parts by weight, 5 ~ 30 parts and 5 ~ 15 parts of additive powder of ore feed powder made from step 2 are taken, with step Crystallite frit powder made from five, which is placed in together in batch mixer, carries out mixing 12-25min, and crystallite facing mixed ingredients are made, spare；
Step 7: a hollow cavity type mold is set up using refractory slab, later, in hollow cavity on the roll shaft of roller kilns Baffle is arranged in the outside of shape mold, and is laid with ceramic fiber paper in the inner surface of hollow cavity shape mold；
Step 8: according to 13 ~ 17kg/m2Cloth doses, crystallite facing mixed ingredients made from step 6 are layed in step 7 Ceramic fiber paper on, later, carry out surface strike off, then, according to 30 ~ 40kg/m2Cloth doses, will made from step 4 send out It steeps ceramic mixed ingredients to be layed in above the crystallite facing mixed ingredients struck off, and carries out surface again and strike off, prefabricated component is made, it is standby With；
Step 9: control roller-way kiln temperature is constantly increased to 1140 ~ 1180 DEG C, and heat preservation is carried out at such a temperature and fires 60- 90min, later, after naturally cooling to kiln temperature lower than 80 DEG C, kiln discharge unloads plate, and polish fixed thick to get finished product foaming Ceramic thermal insulation plate.
Further, in step 7, the refractory slab is cordierite or mullite.
Further, in step 9, the heating rate of the roller kilns is 5 DEG C/min.
The utility model has the advantages that
1, the compound gangue base exterior insulation of crystallite of the invention, deficiency in economic performance low with combustion value, accumulation deposit pollution Big coal mining association product --- gangue is main material, is aided with the ore charge and function ingredient of addition special formulation ratio Additive has prepared a kind of inner void various structures, and excellent thermal insulation performance, bulk density is small, high-strength light, and surface is with micro- The bastard coal ground mass exterior insulation of brilliant finish coat.The exterior insulation can largely consume gangue, improve Its comprehensive utilization ratio and added value of product, so as to avoid soil caused by gangue bulk deposition, environmental pollution, economic benefit It is good, it is practical.Exterior insulation with crystallite compound facing enables to the economic value of product higher, realizes Further gangue essence is used.
2, the compound gangue base exterior insulation of crystallite that the present invention is prepared using dry process, thermal insulation property Excellent, the thermal coefficient of product is not more than 0.10w/(m k), bulk density is not more than 0.5kg/m3, compression strength is greater than 5 Mpa, tool Have the advantages that light high-strength.
3, preparation method of the invention bans wet processing in the prior art, entire dry process using dry process Process be: ingredient → mixing → cloth → be burnt into → unload plate cutting.The advantage of dry process is no mist projection granulating, Jia Shui Mixing, green body compacting, the complicated processes such as blank sintering dehydration, can reduce the energy consumption of above-mentioned operation.Meanwhile dry process The mixing equipment used is batch mixer rather than ball milling, because need to only mix to material in batch mixer, ball milling then needs to drive Ballstone causes material to mix, so dry mixing can be substantially reduced energy consumption.It is measured through test, dry process of the invention is wetter For method technique, energy consumption can reduce by 10 ~ 15%, meanwhile, it is operated by dry mixing more flexible, is suitable for frequent material replacement. Make to operate relatively simple.
4, preparation process of the invention, indispensability in prior art routine operation has been abandoned in step, and material --- water adds Add, entire production process is dry process, so that water source be greatly saved, reduces energy consumption, has also simplified step.Work The chemistry that skill step utilizes different function materials to be participated in the compound gangue base exterior insulation sintering procedure of crystallite Reaction, the factors such as itself physico-chemical property, molecular structure pass through the allotment of specified particle diameter ratio between different material and subsequent step Adequately mixed in rapid, the mode of additional grain composition carrys out the uniformity of better control mixing, make little particle fill automatically to It in the hole of bulky grain, and is preferably contacted with bulky grain in subsequent sintering procedure, reacts, merges, completed Grain assembly and particle foaming effect process, and then fire that be melt into bulk density small, inner porosity uniformly, complicated, thermal coefficient It is small, the compound gangue base exterior insulation of the crystallite of good heat preservation performance.
Specific embodiment
Below in conjunction with several specific embodiments, technical solution in the embodiment of the present invention is clearly and completely retouched It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, belongs to the scope of the present invention.
A kind of compound gangue base exterior insulation of crystallite, the exterior insulation is by foamed ceramic layer and crystallite Finish coat is constituted, and the foamed ceramic layer is prepared from the following raw materials in parts by weight: 70 ~ 85 parts of gangue, ore charge 5 ~ 30 parts, 5 ~ 10 parts of additive, 0.03 ~ 0.07 part of SiC, 5 ~ 8 parts of foam stabilizer；
The crystallite finish coat is prepared from the following raw materials in parts by weight: 33 ~ 50 parts of crystallite frit, 5 ~ 30 parts of ore charge, 5 ~ 15 parts of additive；
The foamed ceramic layer and crystallite finish coat is made of dry process.
The ore charge is at least one in kaolin, quartz, albite, potassium feldspar, talcum, calcite and lepidolite Kind.The additive is at least one of glass powder, aluminium oxide, silicon carbide, soda ash and barium carbonate.
A kind of preparation method of the compound gangue base exterior insulation of crystallite, comprising the following steps:
Step 1: according to parts by weight, take 70 ~ 85 parts of gangue to be placed in pulverizer the particle for being ground into that partial size is 1 ~ 2cm, Later, transposition is ground into the gangue micro mist that partial size is 180-250 mesh in Vertical Mill, spare；
Step 2: taking ore charge and additive, it is respectively placed in the ore charge for being ground into that partial size is 120-200 mesh in grinding device Powder and partial size are the additive powder of 200 ~ 250 mesh, spare；
Step 3: according to parts by weight, taking 0.03 ~ 0.07 part of SiC to be placed in grinding device and being ground into partial size as 500 ~ 800 mesh SiC powder, it is spare；
Step 4: according to parts by weight, 5 ~ 30 parts and 4 ~ 10 parts of additive powder of ore feed powder made from step 2 are taken, with step Gangue micro mist made from one, SiC powder made from step 3 and 5 ~ 8 portions of foam stabilizers are placed in batch mixer are mixed together Foamed ceramic mixed ingredients are made in 12-25min, spare；
Step 5: according to parts by weight, taking 33 ~ 50 parts of crystallite frit, being placed in grinding in vertical mill and partial size is made is 150-250 Purpose crystallite frit powder, it is spare；
Step 6: according to parts by weight, 5 ~ 30 parts and 5 ~ 15 parts of additive powder of ore feed powder made from step 2 are taken, with step Crystallite frit powder made from five, which is placed in together in batch mixer, carries out mixing 12-25min, and crystallite facing mixed ingredients are made, spare；
Step 7: a hollow cavity type mold is set up using cordierite or mullite refractory slab on the roll shaft of roller kilns, it Afterwards, baffle is arranged in the outside of hollow cavity shape mold, and be laid with ceramic fiber paper in the inner surface of hollow cavity shape mold；
Step 8: according to 13 ~ 17kg/m2Cloth doses, crystallite facing mixed ingredients made from step 6 are layed in step 7 Ceramic fiber paper on, later, carry out surface strike off, then, according to 30 ~ 40kg/m2Cloth doses, will made from step 4 send out It steeps ceramic mixed ingredients to be layed in above the crystallite facing mixed ingredients struck off, and carries out surface again and strike off, prefabricated component is made, it is standby With；
Step 9: control roller-way kiln temperature is constantly increased to 1140 ~ 1180 DEG C, and heat preservation is carried out at such a temperature and fires 60- 90min, later, after naturally cooling to kiln temperature lower than 80 DEG C, kiln discharge unloads plate, and polish fixed thick to get finished product foaming Ceramic thermal insulation plate.
Certainly, the compound gangue base exterior insulation of crystallite of the invention can also be carried out by traditional wet processing Preparation.
Embodiment 1
A kind of compound gangue base exterior insulation of crystallite and preparation method thereof, comprising the following steps:
(1), 8.2 kg of gangue is weighed, is first placed in pulverizer the particle for being ground into that partial size is 2cm, later, transposition is in Vertical Mill In, it is ground into the gangue micro mist that partial size is 200 mesh, it is spare；
(2), lepidolite 0.8kg and kaolin 0.3kg is weighed respectively is placed in grinding device the ore for being ground into that partial size is 150 mesh Feed powder I, it is spare；
(3), it weighs glass powder 0.7kg and is placed in grinding device the additive powder I for being ground into that partial size is 200 mesh, it is spare；
(4), it weighs SiC 0.05kg and is placed in grinding device the SiC powder for being ground into that partial size is 600 mesh, it is spare；
(5), by gangue micro mist made from step (1) to step (4), ore feed powder I, additive powder I, SiC powder, with 0.6kg Foam stabilizer, which is placed in together in batch mixer, carries out mixing 15min, and foamed ceramic mixed ingredients are made, spare；
(6), it weighs crystallite frit 3.5kg to be placed in Vertical Mill, is ground into the crystallite frit powder that partial size is 200 mesh, it is spare；
(7), albite 0.4kg, kaolin 0.3kg, quartz 0.3kg and talcum 0.2kg are weighed respectively, are placed in powder in grinding device It is broken into the ore feed powder II that partial size is 150 mesh, it is spare；
(8), it weighs aluminium oxide 0.3kg and is placed in grinding device the additive powder II for being ground into that partial size is 200 mesh, it is spare；
(9), by ore feed powder II made from crystallite frit powder made from step (6), step (7) and step (8) addition obtained Agent powder II, which is placed in together in batch mixer, carries out mixing 18min, and crystallite facing mixed ingredients are made, spare；
(10), assembly mold, and ceramic fiber paper is arranged in die inside, according to 15kg/m2Cloth doses, by crystallite obtained Facing mixed ingredients are layed on ceramic fiber paper, later, are carried out surface and are struck off, then, according to 35kg/m2Cloth doses, will make The foamed ceramic mixed ingredients obtained are layed in above the crystallite facing mixed ingredients struck off, and are carried out surface again and struck off, and are made pre- Product, it is spare；
(11), mold and prefabricated component to be burnt are placed in kiln, control kiln temperature is constantly increased to 1160 DEG C, and in the temperature Under carry out heat preservation and fire 80min, later, naturally cool to kiln temperature lower than after 70 DEG C, it is multiple to get finished product crystallite that kiln discharge unloads plate Close bastard coal ground mass exterior insulation.
After measured, the bulk density of the compound gangue base exterior insulation of crystallite made from the present embodiment is 0.38kg/m3, Thermal coefficient is 0.10w/(m k), compression strength 5.1Mpa.
Embodiment 2
A kind of compound gangue base exterior insulation of crystallite and preparation method thereof, comprising the following steps:
(1), 8.5 kg of gangue is taken, is first placed in pulverizer the particle for being ground into that partial size is 1.5cm, later, transposition is in Vertical Mill In, it is ground into the gangue micro mist that partial size is 250 mesh, it is spare；
(2), lepidolite 0.6kg and kaolin 0.3kg is weighed respectively is placed in grinding device the ore for being ground into that partial size is 120 mesh Feed powder I, it is spare；
(3), it weighs glass powder 0.6kg and is placed in grinding device the additive powder I for being ground into that partial size is 200 mesh, it is spare；
(4), it weighs SiC 0.04kg and is placed in grinding device the SiC powder for being ground into that partial size is 500 mesh, it is spare；
(5), by gangue micro mist made from step (1) to step (4), ore feed powder I, additive powder I, SiC powder, with 0.5kg Foam stabilizer, which is placed in together in batch mixer, carries out mixing 20min, and foamed ceramic mixed ingredients are made, spare；
(6), it weighs crystallite frit 3.3kg to be placed in Vertical Mill, is ground into the crystallite frit powder that partial size is 200 mesh, it is spare；
(7), albite 0.4kg, kaolin 0.4kg, quartz 0.4kg and talcum 0.2kg are weighed respectively, are placed in powder in grinding device It is broken into the ore feed powder II that partial size is 150 mesh, it is spare；
(8), 0.1 kg of silicon carbide, 0.3 kg of soda ash, barium carbonate 0.5kg, glass powder 0.2kg is weighed to be placed in grinding device and crush It is the additive powder II of 200 mesh at partial size, it is spare；
(9), by ore feed powder II made from crystallite frit powder made from step (6), step (7) and step (8) addition obtained Agent powder II, which is placed in together in batch mixer, carries out mixing 12min, and crystallite facing mixed ingredients are made, spare；
(10), assembly mold, and ceramic fiber paper is arranged in die inside, according to 16kg/m2Cloth doses, by crystallite obtained Facing mixed ingredients are layed on ceramic fiber paper, later, are carried out surface and are struck off, then, according to 40kg/m2Cloth doses, will make The foamed ceramic mixed ingredients obtained are layed in above the crystallite facing mixed ingredients struck off, and are carried out surface again and struck off, and are made pre- Product, it is spare；
(11), mold and prefabricated component to be burnt are placed in kiln, control kiln temperature is constantly increased to 1170 DEG C, and in the temperature Under carry out heat preservation and fire 60min, later, naturally cool to kiln temperature lower than after 70 DEG C, it is multiple to get finished product crystallite that kiln discharge unloads plate Close bastard coal ground mass exterior insulation.
After measured, the bulk density of the compound gangue base exterior insulation of crystallite made from the present embodiment is 0.47kg/m3, Thermal coefficient is 0.094w/(m k), compression strength 7.9Mpa.
Embodiment 3
A kind of compound gangue base exterior insulation of crystallite and preparation method thereof, comprising the following steps:
(1), take 8.4 kg of gangue, be first placed in pulverizer be ground into partial size be 1cm particle, later, transposition in Vertical Mill, It is ground into the gangue micro mist that partial size is 200 mesh, it is spare；
(2), lepidolite 0.9kg is weighed respectively, albite 0.3kg is placed in grinding device the ore for being ground into that partial size is 200 mesh Feed powder I, it is spare；
(3), it weighs glass powder 0.4kg and is placed in grinding device the additive powder I for being ground into that partial size is 220 mesh, it is spare；
(4), it weighs SiC 0.07kg and is placed in grinding device the SiC powder for being ground into that partial size is 500 mesh, it is spare；
(5), by gangue micro mist made from step (1) to step (4), ore feed powder I, additive powder I, SiC powder, with 0.8kg Foam stabilizer, which is placed in together in batch mixer, carries out mixing 12min, and foamed ceramic mixed ingredients are made, spare；
(6), it weighs crystallite frit 3.8kg to be placed in Vertical Mill, is ground into the crystallite frit powder that partial size is 150 mesh, it is spare；
(7), 0.1 kg of potassium feldspar 0.2kg, 0.2 kg of calcite and lepidolite is weighed respectively, is placed in grinding device and is crushed granulating Diameter is the ore feed powder II of 220 mesh, spare；
(8), it weighs glass powder 0.2kg and 0. 3kg of barium carbonate and is placed in grinding device the additive for being ground into that partial size is 220 mesh Powder II, it is spare；
(9), by ore feed powder II made from crystallite frit powder made from step (6), step (7) and step (8) addition obtained Agent powder II, which is placed in together in batch mixer, carries out mixing 15min, and crystallite facing mixed ingredients are made, spare；
(10), assembly mold, and ceramic fiber paper is arranged in die inside, according to 13kg/m2Cloth doses, by crystallite obtained Facing mixed ingredients are layed on ceramic fiber paper, later, are carried out surface and are struck off, then, according to 30kg/m2Cloth doses, will make The foamed ceramic mixed ingredients obtained are layed in above the crystallite facing mixed ingredients struck off, and are carried out surface again and struck off, and are made pre- Product, it is spare；
(11), mold and prefabricated component to be burnt are placed in kiln, control kiln temperature is constantly increased to 1140 DEG C, and in the temperature Under carry out heat preservation and fire 90min, later, naturally cool to kiln temperature lower than after 70 DEG C, it is multiple to get finished product crystallite that kiln discharge unloads plate Close bastard coal ground mass exterior insulation.
After measured, the bulk density of the compound gangue base exterior insulation of crystallite made from the present embodiment is 0.30kg/m3, Thermal coefficient is 0.91w/(m k), compression strength 6.2Mpa.
Embodiment 4
A kind of compound gangue base exterior insulation of crystallite and preparation method thereof, comprising the following steps:
(1), take 7.0 kg of gangue, be first placed in pulverizer be ground into partial size be 2cm particle, later, transposition in Vertical Mill, It is ground into the gangue micro mist that partial size is 150 mesh, it is spare；
(2), weigh respectively kaolin 0.7kg, 0.5 kg of quartz, 0.6 kg of albite, 0.3 kg of potassium feldspar, 0.4 kg of talcum, 0.4 kg of calcite and 0.1 kg of lepidolite is placed in grinding device the ore feed powder I for being ground into that partial size is 180 mesh, spare；
(3), aluminium oxide 0.2kg, silicon carbide 0.3kg, soda ash 0.2kg and barium carbonate 0.3kg is weighed to be placed in grinding device and crush It is the additive powder I of 250 mesh at partial size, it is spare；
(4), it weighs SiC 0.03kg and is placed in grinding device the SiC powder for being ground into that partial size is 800 mesh, it is spare；
(5), by gangue micro mist made from step (1) to step (4), ore feed powder I, additive powder I, SiC powder, with 0.7kg Foam stabilizer, which is placed in together in batch mixer, carries out mixing 25min, and foamed ceramic mixed ingredients are made, spare；
(6), it weighs crystallite frit 5.0kg to be placed in Vertical Mill, is ground into the crystallite frit powder that partial size is 250 mesh, it is spare；
(7), weigh respectively kaolin 0.7kg, quartz 0.5kg, 0.3 kg of albite, 0.4 kg of potassium feldspar, 0.8 kg of talcum and Calcite 0.3kg is placed in grinding device the ore feed powder II for being ground into that partial size is 250 mesh, spare；
(8), 0.5 kg of glass powder, 0.2 kg of aluminium oxide, 0.2 kg of silicon carbide, 0.1 kg of soda ash and 0.5 kg of barium carbonate is weighed to set The additive powder II that partial size is 250 mesh is ground into grinding device, it is spare；
(9), by ore feed powder II made from crystallite frit powder made from step (6), step (7) and step (8) addition obtained Agent powder II, which is placed in together in batch mixer, carries out mixing 25min, and crystallite facing mixed ingredients are made, spare；
(10), assembly mold, and ceramic fiber paper is arranged in die inside, according to 17kg/m2Cloth doses, by crystallite obtained Facing mixed ingredients are layed on ceramic fiber paper, later, are carried out surface and are struck off, then, according to 38kg/m2Cloth doses, will make The foamed ceramic mixed ingredients obtained are layed in above the crystallite facing mixed ingredients struck off, and are carried out surface again and struck off, and are made pre- Product, it is spare；
(11), mold and prefabricated component to be burnt are placed in kiln, control kiln temperature is constantly increased to 1180 DEG C, and in the temperature Under carry out heat preservation and fire 70min, later, naturally cool to kiln temperature lower than after 70 DEG C, it is multiple to get finished product crystallite that kiln discharge unloads plate Close bastard coal ground mass exterior insulation.
After measured, the bulk density of the compound gangue base exterior insulation of crystallite made from the present embodiment is 0.35kg/m3, Thermal coefficient is 0.89w/(m k), compression strength 8.3Mpa.
The above disclosure is just a few specific examples of the present application, it but is not intended to limit the scope of the present invention. Anyone skilled in the art, the change and retouching done on the basis of the present invention, all should belong to guarantor of the invention Protect range.

Claims (6)

1. a kind of compound gangue base exterior insulation of crystallite, which is adornd by foamed ceramic layer and crystallite Surface layer is constituted, it is characterised in that: the foamed ceramic layer is prepared from the following raw materials in parts by weight: 70 ~ 85 parts of gangue, 5 ~ 30 parts of ore charge, 5 ~ 10 parts of additive, 0.03 ~ 0.07 part of SiC, 5 ~ 8 parts of foam stabilizer；
The crystallite finish coat is prepared from the following raw materials in parts by weight: 33 ~ 50 parts of crystallite frit, 5 ~ 30 parts of ore charge, 5 ~ 15 parts of additive；
The foamed ceramic layer and crystallite finish coat is made of dry process.
2. the compound gangue base exterior insulation of a kind of crystallite according to claim 1, it is characterised in that: described Ore charge is at least one of kaolin, quartz, albite, potassium feldspar, talcum, calcite and lepidolite.
3. the compound gangue base exterior insulation of a kind of crystallite according to claim 1, it is characterised in that: described Additive is at least one of glass powder, aluminium oxide, silicon carbide, soda ash and barium carbonate.
4. a kind of preparation method of the compound gangue base exterior insulation of crystallite according to claim 1, feature It is, comprising the following steps:
Step 1: according to parts by weight, take 70 ~ 85 parts of gangue to be placed in pulverizer the particle for being ground into that partial size is 1 ~ 2cm, Later, transposition is ground into the gangue micro mist that partial size is 180-250 mesh in Vertical Mill, spare；
Step 2: taking ore charge and additive, it is respectively placed in the ore charge for being ground into that partial size is 120-200 mesh in grinding device Powder and partial size are the additive powder of 200 ~ 250 mesh, spare；
Step 3: according to parts by weight, taking 0.03 ~ 0.07 part of SiC to be placed in grinding device and being ground into partial size as 500 ~ 800 mesh SiC powder, it is spare；
Step 4: according to parts by weight, 5 ~ 30 parts and 4 ~ 10 parts of additive powder of ore feed powder made from step 2 are taken, with step Gangue micro mist made from one, SiC powder made from step 3 and 5 ~ 8 portions of foam stabilizers are placed in batch mixer are mixed together Foamed ceramic mixed ingredients are made in 12-25min, spare；
Step 5: according to parts by weight, taking 33 ~ 50 parts of crystallite frit, being placed in grinding in vertical mill and partial size is made is 150-250 Purpose crystallite frit powder, it is spare；
Step 6: according to parts by weight, 5 ~ 30 parts and 5 ~ 15 parts of additive powder of ore feed powder made from step 2 are taken, with step Crystallite frit powder made from five, which is placed in together in batch mixer, carries out mixing 12-25min, and crystallite facing mixed ingredients are made, spare；
Step 7: a hollow cavity type mold is set up using refractory slab, later, in hollow cavity on the roll shaft of roller kilns Baffle is arranged in the outside of shape mold, and is laid with ceramic fiber paper in the inner surface of hollow cavity shape mold；
Step 8: according to 13 ~ 17kg/m2Cloth doses, crystallite facing mixed ingredients made from step 6 are layed in step 7 Ceramic fiber paper on, later, carry out surface strike off, then, according to 30 ~ 40kg/m2Cloth doses, will made from step 4 send out It steeps ceramic mixed ingredients to be layed in above the crystallite facing mixed ingredients struck off, and carries out surface again and strike off, prefabricated component is made, it is standby With；
Step 9: control roller-way kiln temperature is constantly increased to 1140 ~ 1180 DEG C, and heat preservation is carried out at such a temperature and fires 60- 90min, later, after naturally cooling to kiln temperature lower than 80 DEG C, kiln discharge unloads plate, and polish fixed thick to get finished product foaming Ceramic thermal insulation plate.
5. a kind of preparation method of the compound gangue base exterior insulation of crystallite according to claim 4, feature Be: in step 7, the refractory slab is cordierite or mullite.
6. a kind of preparation method of the compound gangue base exterior insulation of crystallite according to claim 1, feature Be: in step 9, the heating rate of the roller kilns is 5 DEG C/min.
CN201910804204.3A 2019-08-28 2019-08-28 A kind of compound gangue base exterior insulation of crystallite and preparation method thereof Pending CN110395969A (en)

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