CN110526584A - A kind of crystal silicon cutting waste material collaboration gangue prepares the method and purposes of porous micro crystal material - Google Patents
A kind of crystal silicon cutting waste material collaboration gangue prepares the method and purposes of porous micro crystal material Download PDFInfo
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- CN110526584A CN110526584A CN201910953697.7A CN201910953697A CN110526584A CN 110526584 A CN110526584 A CN 110526584A CN 201910953697 A CN201910953697 A CN 201910953697A CN 110526584 A CN110526584 A CN 110526584A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/08—Other methods of shaping glass by foaming
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
- C03B32/02—Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
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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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
-
- 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
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0063—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing waste materials, e.g. slags
-
- 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
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
- C03C11/007—Foam glass, e.g. obtained by incorporating a blowing agent and heating
Abstract
The present invention relates to methods and purposes that a kind of crystal silicon cutting waste material collaboration gangue prepares porous micro crystal material.The porous micro crystal material is prepared from the following raw materials: 70.0~85.0wt% of gangue, 10.0~15.0wt% of feldspar, 2.0~10.0wt% of crystal silicon cutting waste material, 2.0~8.0wt% of soda ash, 0~5.0wt% of foaming agent.Porous micro crystal material prepared by the present invention has many advantages, such as that lightweight, wear-resistant, acid-alkali-corrosive-resisting, chemical stability is good, intensity is high, resistance to rapid heat cycle, good heat insulating, sound insulation, the easily characteristics such as cutting, in addition to this also has comprehensive cost low, reusable.It can be widely applied to the heat-insulation and heat-preservation of the critical material in the fields such as building decoration, battery pole plates, insulation, noise reduction, shockproof and the pipeline of machinery field, storage tank, heat-exchange system.
Description
Technical field
The invention belongs to porous material preparation technical fields, and in particular to a kind of crystal silicon cutting waste material collaboration gangue preparation
The method and purposes of porous micro crystal material.
Background technique
On the one hand, in traditional energy field, China is coal big country, and average annual coal production total quantity consumed is up to hundred million tonnes, mine
Environmental disruption caused by mountain is exploited is increasingly subject to the attention of people.Cut-off 2017, according to incompletely statistics, Chinese gangue inventory
Cumulative amount has reached 4,500,000,000 tons, and is increased every year with 1.5~2.0 hundred million tons of quantity.During coal utilization, a large amount of coals are generated
Spoil destroys periphery living environment, causes periphery ecological pollution, occupies a large amount of soils and easily cause geological disaster and water body dirt
Dye, seriously affects the Health and Living of the masses around.Therefore carry out gangue green, the resource utilization of high added value has ten
Divide important meaning.
On the other hand, in new energy field, China is rapidly developed in recent years, and the development of especially photovoltaic industry is suitable
Rapidly, whole year in 2017, China's photovoltaic increase installation amount newly and reach 53.06GW, increase by 53.62% on a year-on-year basis.Recently as distribution
The extensive use of photovoltaic, photovoltaic installation welcome new growth point.Domestic polysilicon yield is 24.2 ten thousand tons within 2017, is more than the whole world
Yield 50%.Photovoltaic polycrystalline silicon material production process produces a large amount of crystal silicon cutting waste material, and there is an urgent need to resource utilizations.
Porous micro crystal material is considered as one of state-of-the-art heat-barrier material, have low average density, the high strength of materials and
Excellent insulating capacity, anti-flammability, high chemical resistance, low water absorbable and virtually limitless service life are (exhausted with organic and fiber
Edge material is opposite), it has been significantly expanded the application field of porous material.Porous micro crystal material can be used for: (1) load-bearing of building
Wall, ceiling, enclosure wall, internal partition wall；(2) cryogenic piping, equipment, container and storage tank；(3) mild high-temperature pipe, equipment in；
(4) hot oil and heated bitumen storage tank；(5) fluid heat transfer system；(6) sound insulations such as compressor, Ventilator Room and sound-absorbing wall；(7) special item
Work compound heat-insulation system under part.
CN103708731B discloses a kind of porous micro crystal material of nickel slag and preparation method thereof.Smelting ferronickel alloy waste residue is
Primary raw material, with SiO2、CaCO3、Na2CO3、ZnO、K2CO3Equal additives and clarifying agent are auxiliary material, but it is merely with single
A kind of ferro-nickel alloy dregs prepare porous material.
In conclusion the present invention is that primary raw material prepares porous micro crystal material using gangue, crystal silicon cutting waste material, create
New property is that collaboration utilizes two kinds of waste materials of crystal silicon cutting waste material and gangue, and wherein SiC can be used as foaming agent in crystal silicon cutting waste material,
Solid-state Si particle, which has, promotes the equally distributed effect of batch thermal field；Gangue not only can be used as raw material, but also can be used as portion
Divide fuel, produce the high value added product of low cost, there is significant economy, environmental and social benefits.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is big argument recycling high-value-use gangues and crystal silicon to cut
Waste material prepares porous micro crystal material, while solving porous micro crystal material in foamable mistake using the high thermal conduction characteristic of Si particle
The non-uniform problem of thermal field in journey provides a kind of gangue and crystal silicon cutting waste material coordinate system for the method for porous micro crystal material.
In order to achieve the above object, the present invention adopts the following technical scheme:
One of the objects of the present invention is to provide a kind of crystal silicon cutting waste material collaboration gangue preparation porous micro crystal material,
The raw material of the porous micro crystal material are made up of:
The sum of raw material composition gross mass percentage of the porous micro crystal material is calculated as 100%.
The content of the gangue such as 72wt%, 74wt%, 75wt%, 76wt%, 78wt%, 80wt%, 81wt%,
82wt% or 84wt% etc.；The content of the feldspar such as 11wt%, 12wt%, 13wt% or 14wt% etc.；The crystal silicon is cut
Cut content such as 3wt%, 4wt%, 5wt%, 6wt%, 7wt%, 8wt% or 9wt% etc. of waste material；The content example of the soda ash
Such as 3wt%, 4wt%, 5wt%, 6wt% or 7wt%；The content of the foaming agent such as 0.2wt%, 0.5wt%,
0.8wt%, 1wt%, 1.5wt%, 2wt%, 2.5wt%, 3wt%, 3.5wt%, 4wt% or 4.5wt% etc..
The present invention is that primary raw material prepares micro crystal material using gangue and crystal silicon cutting waste material, during the preparation process with crystalline substance
SiC in silicon cutting waste material significantly reduces foaming agent cost of material as foaming agent；And the solid-state in crystal silicon cutting waste material Si
Grain is both raw material and the effect for adjusting thermal field uniformity, and the basic batch of porous micro crystal material can be promoted to heat
Thermally equivalent in the process, the stomata uniformity in porous micro crystal material improved；During the preparation process, gangue is both original
Material is again fuel, can not only reduce the production cost of porous micro crystal material, can also reduce industrial solid castoff to environment
Pollution, have significant economy, environmental and social benefits.
Preferably, the composition of the crystal silicon cutting waste material are as follows:
The sum of composition gross mass percentage of the crystal silicon cutting waste material is calculated as 100%.
The content of the polyethylene glycol such as 6wt%, 7wt%, 8wt%, 9wt%, 10wt%, 11wt%, 12wt%,
13wt% or 14wt% etc.；The content of the SiC be such as 22wt%, 25wt%, 28wt%, 30wt%, 32wt%,
35wt%, 36wt% or 38wt% etc.；The content of the Si such as 42wt%, 45wt%, 48wt%, 50wt%, 52wt%,
55wt%, 56wt%, 58wt%, 60wt%, 62wt%, 65wt%, 66wt% or 68wt% etc.；The SiO2Content for example
6wt%, 7wt%, 8wt%, 9wt%, 10wt%, 11wt%, 12wt%, 13wt% or 14wt% etc.；The Fe2O3Content
Such as 1wt%, 2wt%, 5wt%, 6wt%, 7wt%, 8wt%, 9wt%, 10wt%, 11wt%, 12wt%, 13wt% or
14wt% etc.；It is described it is other it is micro be impurity, content is few.
Preferably, the composition of the gangue are as follows:
The sum of composition gross mass percentage of the gangue is calculated as 100%.
SiO in the gangue2Content such as 50.2wt%, 50.5wt%, 50.8wt%, 51wt%, 51.2wt%,
51.5wt%, 52wt%, 52.5wt%, 53wt%, 53.5wt%, 54wt% or 54.5wt% etc.；Al in the gangue2O3
Content such as 20.2wt%, 20.5wt%, 20.8wt%, 21wt%, 21.2wt%, 21.5wt%, 22wt%,
22.5wt%, 23wt%, 23.5wt%, 24wt% or 24.5wt% etc.；Fe in the gangue2O3Content for example
4.5wt%, 5wt%, 5.5wt%, 6wt%, 6.5wt%, 7wt%, 7.5wt%, 8wt% or 8.5wt% etc.；The gangue
The content of middle CaO such as 2.5wt%, 3wt%, 3.5wt%, 4wt%, 4.5wt%, 5wt% or 5.5wt% etc.；The bastard coal
SO in stone3Content such as 2.5wt%, 3wt%, 3.5wt%, 4wt%, 4.5wt%, 5wt%, 5.5wt%, 6wt%,
6.5wt%, 7wt%, 7.5wt% or 7.8wt% etc.；K in the gangue2The content of O such as 1.2wt%, 1.5wt%,
1.6wt%, 1.8wt%, 2wt%, 2.2wt%, 2.5wt%, 2.6wt% or 2.8wt% etc.；TiO in the gangue2Contain
Measure such as 1.1wt%, 1.2wt%, 1.3wt%, 1.4wt%, 1.5wt%, 1.6wt%, 1.7wt%, 1.8wt% or
1.9wt% etc.；The content of MgO such as 0.3wt%, 0.5wt% in the gangue, 0.6wt%, 0.8wt%, 1wt%,
1.2wt%, 1.5wt%, 1.6wt% or 1.8wt% etc.；Na in the gangue2The content of O such as 0.1wt%, 0.2wt%,
0.3wt% or 0.4wt% etc.；P in the gangue2O5Content such as 0.12wt%, 0.14wt%, 0.15wt%,
0.2wt%, 0.22wt%, 0.24wt%, 0.25wt% or 0.28wt% etc.；It is described it is other it is micro be impurity, content is few.
Preferably, the loss on ignition of the gangue be 5.0~40.0wt%, such as 6wt%, 8wt%, 10wt%,
12wt%, 15wt%, 18wt%, 20wt%, 22wt%, 25wt%, 30wt% or 35wt% etc..
Preferably, the foaming agent includes in carbon black, agstone, dolomite dust, phlogopite, graphite and manganese dioxide
Any one or at least two combination.
Preferably, the mass ratio between the carbon black, agstone, dolomite dust, phlogopite, graphite and manganese dioxide is
(0~1.0): (0~1.0): (0~1.0): (0~1.0): (0~1.0): (1.0~2.0), such as 0.2:0.1:0.5:0.3:
0.4:1.8、0.1:0.1:0.3:0.7:0.2:1.5、0.3:0.2:0.1:0.8:0.2:1.6、0.4:0.2:0.1:0.9:0.1:
1.7、0.1:0.2:0.8:0.1:0.6:1.9、0.5:0.6:0.3:0.8:0.1:1.4、0:0:0.1:0:0.2:2、0.9:0:0:
0:0.8:1.9 or 0.5:0:0.1:0.8:0:1.6 etc..
Preferably, the feldspar include albite, potassium feldspar, anorthite, baryta fledspar, baryta feldspar, in microcline
Any one or at least two combination.
Preferably, the albite, potassium feldspar, anorthite, baryta fledspar, baryta feldspar, microcline, between mass ratio
For (0~1.0): (0~1.0): (0~1.0): (0~1.0): (0~1.0): (1.0~2.0), for example, 0.2:0:0:0:0:0,
0.1:0.1:0:0:0:0、0.3:0.2:0.1:0.8:0.2:1.6、0.4:0.2:0.1:0.9:0.1:1.7、0.1:0.2:0.8:
0.1:0.6:1.9,0.5:0.6:0.3:0.8:0.1:1.4 or 0:0:0.1:0:0.2:2 etc..
The second object of the present invention is to provide one kind crystal silicon cutting waste material collaboration gangue preparation as described in the first purpose
The method of porous micro crystal material, the preparation method include the following steps:
(1) gangue waste material is crushed, crosses 30 mesh screens；
(2) gangue of 70.0~85.0wt% of mass fraction, the feldspar of 10.0~15.0wt%, 2.0~8.0wt% are pressed
Soda ash, 2.0~10.0wt% crystal silicon cutting waste material, the foaming agent of 0~5.0wt% uniformly mixes, additional suitable water；
(3) ball mill is added by the proportion of raw material in gangue, crystal silicon cutting waste material, feldspar, soda ash and foaming agent, carried out
Wet ball grinding obtains uniform slurry；
(4) the good uniform sizing material of ball milling is dried, obtains powder, powder is fitted into mold, the mould of the good powder of cloth
Tool is sent into preheating, firing, demoulding in heat treatment kiln, obtains workblank sheet material；
(5) workblank sheet material that firing comes out is packed and stored by fixed thick, cutting, end product.
Preferably, drying temperature described in step (4) is 100~300 DEG C, such as 120 DEG C, 150 DEG C, 160 DEG C, 180
DEG C, 200 DEG C, 220 DEG C, 250 DEG C, 260 DEG C or 280 DEG C etc..
Fig. 1 is the preparation technology flow chart of devitrified glass provided by the invention, and by can see in figure, raw material is mixed
Afterwards, by ball milling, charging (molding) and firing (sintering and foaming) process, porous devitrified glass (i.e. porous crystallite can be obtained
Material).
Preferably, firing described in step (4) is carried out by following sintering procedure:
Warm-up phase: in-furnace temperature is risen into 350~450 DEG C, 5~20 DEG C/min of heating rate, such as 360 by room temperature
DEG C, 370 DEG C, 380 DEG C, 390 DEG C, 400 DEG C, 410 DEG C, 420 DEG C, 430 DEG C or 440 DEG C etc.；Such as 6 DEG C/min, 8 DEG C/min, 10
DEG C/min, 12 DEG C/min, 14 DEG C/min, 15 DEG C/min, 16 DEG C/min, 18 DEG C/min or 19 DEG C/min etc..
Sintering stage: in-furnace temperature is risen to 920~980 DEG C, 5~15 DEG C/min of heating rate by 350~450 DEG C, example
Such as 930 DEG C, 940 DEG C, 950 DEG C, 960 DEG C or 970 DEG C；Such as 6 DEG C/min, 7 DEG C/min, 8 DEG C/min, 9 DEG C/min, 10 DEG C/
Min, 11 DEG C/min, 12 DEG C/min, 13 DEG C/min or 14 DEG C/min etc..
Foaming stages: rising to maximum sintering temperature by 920~980 DEG C for in-furnace temperature, 5~10 DEG C/min of heating rate,
Such as 6 DEG C/min, 7 DEG C/min, 8 DEG C/min or 9 DEG C/min etc..
Annealing stage: in-furnace temperature is down to room temperature by maximum sintering temperature, is cooled down as furnace cooling.
Preferably, the maximum sintering temperature of foaming stages be 1100~1300 DEG C, under maximum sintering temperature keep the temperature 0.3~
2.0h, such as 1120 DEG C, 1150 DEG C, 1180 DEG C, 1200 DEG C, 1220 DEG C, 1250 DEG C or 1280 DEG C etc.；Such as 0.5h, 0.6h,
0.8h, 1h, 1.2h, 1.4h, 1.5h, 1.6h or 1.8h etc..
In the present invention, each heat treatment stages of the sintering procedure have following meaning:
Warm-up phase: this stage is evaporation stage, and chemical change does not occur for mainly exclusion mechanical water and absorption water, powder
Change, the physical changes such as volume contraction, porosity increase only occur.
Sintering stage: this stage is the oxygenolysis stage, and the primary chemical variation of powder is the exclusion of constitution water, in green body
The decomposition and oxidation of the compounds such as contained organic matter, carbonate, SiC and crystal transfer.
Foaming stages: the variation that this stage mainly occurs is that the powder melting in green body liquid phase occurs, and green body is gradually fine and close.
On the one hand, it is recrystallized in liquid phase, forms a kind of new crystal, and constantly growth in the liquid phase；At the same time, foaming agent generates
Gas forms bubble in the liquid phase, forms vapor-liquid two phases complex.
Annealing stage: being down to room temperature by maximum sintering temperature for kiln in-furnace temperature, cools down as furnace cooling, obtains porous micro-
Brilliant material.Glass crystalline substance composite solid phase viscosity increases in this stage articles, and is converted into solid state, hardness and strength by mecystasis
Increase to maximum.
The shape of the porous micro crystal material is plate or cylindrical shape or curved shape, or times processed according to actual needs
What other shapes.
The third object of the present invention is to provide one kind crystal silicon cutting waste material collaboration gangue preparation as described in the first purpose
Porous micro crystal material purposes, the porous micro crystal material be used for building field, field of pipeline equipment, soundproofing field, sound-absorbing
In wall and compound heat-insulation system regions any one or at least two combination.
Compared with prior art, the invention has the following beneficial effects:
(1) it realizes new energy solid waste and cooperates with recycling high-value-use with traditional energy solid waste:
The present invention is using gangue as the porous micro crystal material of main material production high added value, and gangue is in porous crystallite material
Volume in material can be adjusted within the scope of 70~85wt%, and gangue is both raw material and fuel, can not only be reduced porous micro-
The production cost of brilliant material can also mitigate pollution of the industrial solid castoff to environment.
(2) multiple action of crystal silicon cutting waste material Main Components is utilized in design:
Si particle in crystal silicon cutting waste material is both raw material, it may have adjusts the effect of thermal field uniformity, promotes porous micro-
The basic batch of crystal glass material thermally equivalent during heating improves hole uniformity；SiC in crystal silicon cutting waste material
It can be used as foaming agent, significantly reduce foaming agent cost of material.
(3) porous micro crystal material " one-step method " firing process is developed:
The present invention passes through once-firing, completes the processes such as melting, foaming, crystallization, the annealing of porous micro crystal material, abandons
Conventional porous micro crystal material first prepares foam glass, then carries out " two-step method " firing process of crystallization, significantly shortening firing period.
Detailed description of the invention
Fig. 1 is the preparation technology flow chart of porous devitrified glass provided by the invention.
Specific embodiment
Of the invention for ease of understanding, it is as follows that the present invention enumerates embodiment.Those skilled in the art are it will be clearly understood that the implementation
Example is only to aid in the understanding present invention, should not be regarded as a specific limitation of the invention.
Embodiment 1
The composition of gangue used in the present embodiment are as follows: SiO2Content be 53wt%, Al2O3Content be 25wt%, Fe2O3
Content be the content of 5wt%, CaO be 5wt%, SO3Content be 6wt%, K2The content of O is 2wt%, TiO2Content be
The content of 2wt%, MgO are 1.7wt%, Na2The content of O is 0.2wt%, P2O5Content be 0.1wt%, impurity content is trace
Amount；In crystal silicon cutting waste material the content of polyethylene glycol be the content that the content of 10wt%, SiC are 30wt%, Si be 50wt%,
SiO2Content be 5wt%, Fe2O3Content be 5wt%, impurity content is trace.
(1) by 79wt% gangue, 11wt% feldspar, 4wt% soda ash, 3wt% crystal silicon cutting waste material and 3wt% foaming agent
Ball mill is added in uniformly mixing, carries out wet ball grinding 3 hours, obtains the slurry that the good fineness of ball milling is 200 mesh, the foaming
Agent is agstone and manganese dioxide (mass ratio 1:1)；
(2) the good slurry of ball milling is dried, temperature controls between 120 DEG C, obtains powder；
(3) mold of the good powder of cloth is sent into furnace and is heat-treated, carried out by following procedure:
Warm-up phase: heat treatment in-furnace temperature is risen to 400 DEG C by room temperature, heating rate is 20 DEG C/min, soaking time
For 30min；
Sintering stage: heat treatment in-furnace temperature is risen to 960 DEG C by 400 DEG C, heating rate is 15 DEG C/min, soaking time
30min；
Foaming stages: heat treatment in-furnace temperature is risen to 1160 DEG C of maximum sintering temperature by 960 DEG C, heating rate 10
DEG C/min, soaking time 30min；
Annealing stage: heat treatment in-furnace temperature is down to room temperature by maximum sintering temperature；
(4) workblank sheet material that firing comes out is packed and stored by polishing cutting, end product.
Embodiment 2
The composition of gangue used in the present embodiment are as follows: SiO2Content be 55wt%, Al2O3Content be 20wt%, Fe2O3
Content be the content of 8wt%, CaO be 6wt%, SO3Content be 5wt%, K2The content of O is 2wt%, TiO2Content be
The content of 2.4wt%, MgO are 1wt%, Na2The content of O is 0.5wt%, P2O5Content be 0.1wt%, impurity content is trace
Amount；In crystal silicon cutting waste material the content of polyethylene glycol be the content that the content of 5wt%, SiC are 25wt%, Si be 50wt%,
SiO2Content be 10wt%, Fe2O3Content be 10wt%, impurity content is trace.
(1) by 76wt% gangue, 14.5wt% feldspar, 4.5wt% soda ash, 2.5wt% crystal silicon cutting waste material and
2.5wt% foaming agent uniformly mixes, and ball mill is added, and carries out wet ball grinding 3 hours, and obtaining the good fineness of ball milling is 200 purposes
Slurry, the foaming agent are dolomite dust and manganese dioxide (mass ratio 1:2)；
(2) the good slurry of ball milling is dried, temperature is controlled at 150 DEG C, obtains powder；
(3) mold of the good powder of cloth is sent into furnace and is heat-treated, carried out by following procedure:
Warm-up phase: heat treatment in-furnace temperature is risen to 350 DEG C by room temperature, heating rate is 10 DEG C/min, soaking time
For 1h；
Sintering stage: heat treatment in-furnace temperature is risen to 920 DEG C by 350 DEG C, heating rate is 10 DEG C/min, soaking time
1.5h；
Foaming stages: by 920 DEG C rising to 1120 DEG C of maximum sintering temperature for heat treatment in-furnace temperature, and heating rate is 8 DEG C/
Min, soaking time 1.2h；
Annealing stage: heat treatment in-furnace temperature is down to room temperature by maximum sintering temperature, is cooled down as furnace cooling；
(4) workblank sheet material that firing comes out is packed and stored by polishing cutting, end product.
Embodiment 3
Gangue used in the present embodiment and the composition of crystal silicon cutting waste material are same as Example 1.
(1) by 81wt% gangue, 9.5wt% feldspar, 4.5wt% soda ash, 2.5wt% crystal silicon cutting waste material and
2.5wt% foaming agent uniformly mixes, and the foaming agent is phlogopite and manganese dioxide (mass ratio 0.5:2), obtains mixing material
Material；
(2) the good slurry of ball milling is dried, temperature controls between 200 DEG C, obtains powder；
(3) mold of the good powder of cloth is sent into furnace and is heat-treated, carried out by following procedure:
Warm-up phase: heat treatment in-furnace temperature is risen to 450 DEG C by room temperature, heating rate is 5 DEG C/min, and soaking time is
0.3h；
Sintering stage: heat treatment in-furnace temperature is risen to 980 DEG C by 450 DEG C, heating rate is 5 DEG C/min, soaking time
0.3h；
Foaming stages: by 980 DEG C rising to 1250 DEG C of maximum sintering temperature for heat treatment in-furnace temperature, and heating rate is 5 DEG C/
Min, soaking time 0.5h；
Annealing stage: heat treatment in-furnace temperature is down to room temperature by maximum sintering temperature, is cooled down as furnace cooling；
(4) workblank sheet material that firing comes out is packed and stored by polishing cutting, end product.
Embodiment 4
The difference from embodiment 1 is that the content of step (1) described gangue is 72wt%, the content of feldspar is
15wt%, the content of soda ash are 8wt%, and the content of crystal silicon cutting waste material is 3wt%, and the content of foaming agent is 2wt%.
Embodiment 5
The difference from embodiment 1 is that the content of step (1) described gangue is 80wt%, the content of feldspar is
10wt%, the content of soda ash are 4wt%, and the content of crystal silicon cutting waste material is 3wt%, and the content of foaming agent is 3wt%.
Porous devitrified glass density obtained in the embodiment of the present invention is less than 720kg/m3, compression strength be greater than 7.0MPa,
Thermal coefficient is less than≤0.06W/mk, acid resistance k < 0.12%, alkali resistance < 0.05%, has light, acid-alkali-corrosive-resisting, strong
Degree height, resistance to rapid heat cycle, fire prevention, good heat insulating, the easily characteristics such as cutting.It can be widely used for heat-insulated, the drop of building decoration area
Make an uproar, be shockproof etc. and the pipeline of industrial circle, storage tank, heat-exchange system heat-insulation and heat-preservation.
The Applicant declares that the present invention is explained by the above embodiments detailed process equipment and process flow of the invention,
But the present invention is not limited to the above detailed process equipment and process flow, that is, it is above-mentioned detailed not mean that the present invention must rely on
Process equipment and process flow could be implemented.It should be clear to those skilled in the art, any improvement in the present invention,
Addition, selection of concrete mode of equivalence replacement and auxiliary element to each raw material of product of the present invention etc., all fall within of the invention
Within protection scope and the open scope.
Claims (10)
1. a kind of porous micro crystal material of crystal silicon cutting waste material collaboration gangue preparation, which is characterized in that the porous crystallite material
The raw material of material are made up of:
The sum of raw material composition gross mass percentage of the porous micro crystal material is calculated as 100%.
2. porous micro crystal material according to claim 1, which is characterized in that the composition of the crystal silicon cutting waste material are as follows:
It is other micro；
The sum of composition gross mass percentage of the crystal silicon cutting waste material is calculated as 100%.
3. porous micro crystal material according to claim 1 or 2, which is characterized in that the composition of the gangue are as follows:
It is other micro；
The sum of composition gross mass percentage of the gangue is calculated as 100%；
Preferably, the loss on ignition of the gangue is 5.0~40.0wt%.
4. porous micro crystal material described in one of -3 according to claim 1, which is characterized in that the foaming agent includes carbon black, stone
In limestone flour, dolomite dust, phlogopite, graphite and manganese dioxide any one or at least two combination；
Preferably, the mass ratio between the carbon black, agstone, dolomite dust, phlogopite, graphite and manganese dioxide be (0~
1.0): (0~1.0): (0~1.0): (0~1.0): (0~1.0): (1.0~2.0).
5. porous micro crystal material described in one of -4 according to claim 1, which is characterized in that the feldspar includes albite, potassium
Feldspar, anorthite, baryta fledspar, baryta feldspar, in microcline any one or at least two combination.
6. a kind of method that the collaboration of the crystal silicon cutting waste material as described in one of claim 1-5 gangue prepares porous micro crystal material,
It is characterized in that, the preparation method includes the following steps:
(1) gangue waste material is crushed, crosses 30 mesh screens；
(2) gangue of 70.0~85.0wt% of mass fraction is pressed, the feldspar of 10.0~15.0wt%, 2.0~8.0wt%'s is pure
Alkali, 2.0~10.0wt% crystal silicon cutting waste material, the foaming agent of 0~5.0wt% uniformly mix, additional suitable water；
(3) ball mill is added by the proportion of raw material in gangue, crystal silicon cutting waste material, feldspar, soda ash and foaming agent, carries out wet process
Ball milling obtains uniform slurry；
(4) the good uniform sizing material of ball milling is dried, obtains powder, powder is fitted into mold, the mold of the good powder of cloth is sent
Enter to be heat-treated in kiln and preheat, be burnt into, demoulding, obtains workblank sheet material；
(5) workblank sheet material that firing comes out is packed and stored by fixed thick, cutting, end product.
7. preparation method according to claim 6, which is characterized in that drying temperature described in step (4) be 100~
300℃。
8. preparation method according to claim 6 or 7, which is characterized in that firing described in step (4) is by following sintering
Program carries out:
Warm-up phase: in-furnace temperature is risen to 350~450 DEG C by room temperature, 5~20 DEG C/min of heating rate；
Sintering stage: in-furnace temperature is risen to 920~980 DEG C by 350~450 DEG C, 5~15 DEG C/min of heating rate；
Foaming stages: in-furnace temperature is risen into maximum sintering temperature, 5~10 DEG C/min of heating rate by 920~980 DEG C；
Annealing stage: in-furnace temperature is down to room temperature by maximum sintering temperature, is cooled down as furnace cooling.
9. preparation method according to claim 8, which is characterized in that the maximum sintering temperature of the foaming stages is 1100
~1300 DEG C, 0.3~2.0 hour is kept the temperature under maximum sintering temperature.
10. a kind of use of the porous micro crystal material of the collaboration of the crystal silicon cutting waste material as described in one of claim 1-5 gangue preparation
On the way, which is characterized in that the porous micro crystal material is for building field, field of pipeline equipment, soundproofing field, sound-absorbing wall and compound
In insulation system field any one or at least two combination.
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| CN115108726A (en) * | 2022-08-12 | 2022-09-27 | 西南科技大学 | Porous glass ceramics taking coal gangue as raw material and preparation method thereof |
| CN115974522A (en) * | 2022-12-02 | 2023-04-18 | 武汉科技大学 | Light-weight high-temperature infrared radiation element and preparation method thereof |
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| CN115108726A (en) * | 2022-08-12 | 2022-09-27 | 西南科技大学 | Porous glass ceramics taking coal gangue as raw material and preparation method thereof |
| CN115974522A (en) * | 2022-12-02 | 2023-04-18 | 武汉科技大学 | Light-weight high-temperature infrared radiation element and preparation method thereof |
| CN115974522B (en) * | 2022-12-02 | 2023-11-17 | 武汉科技大学 | Light-weight high-temperature infrared radiation element and preparation method thereof |
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