CN104761130B - A foam glass production process adopting foam glass waste as a raw material - Google Patents
A foam glass production process adopting foam glass waste as a raw material Download PDFInfo
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Abstract
A foam glass production process adopting foam glass waste as a raw material is disclosed. The production process includes following steps: uniformly mixing raw materials, performing ball milling, performing compression molding, foaming and annealing in order to obtain foam glass. The raw materials comprise 90-95 parts by weight of the foam glass waste, 0.1-0.3 part by weight of a foaming agent and 3-7 parts by weight of a fluxing agent. The particle size of powder obtained after ball milling is 80-120 mum. A temperature control process for the foaming includes heating to 400-450 DEG C at a speed of 20-35 DEG C/min, heating to 700-750 DEG C at a speed of 5-10 DEG C/min, heating to 830-900 DEG C at a speed of 2-4 DEG C/min, and maintaining the temperature for 30-60 min to complete the foaming. The production process can timely and effectively treat the foam glass waste and save the production cost. In addition, the prepared foam glass has good properties.
Description
Technical field
The present invention relates to foam glass production and processing field, and in particular to a kind of foam with foam glass waste material as raw material
Process of glass.
Background technology
Foam glass be by raw materials such as cullet, foaming agent, modifying agent and accelerator by after finely divided and uniform mixing,
The cellular glass material being made by techniques such as preheating, foaming, foam stabilizing, annealing again.
Uniform bubble structure of the foam glass inside comprising a large amount of a diameter of 0.1~3mm, apparent density is 90~500kg/
m3.Foam glass is a kind of heat-insulating material of function admirable, and be provided simultaneously with resistance to chemical attack, fire-retardant, waterproof, anti-corrosion,
Do not damaged by worms the premium properties such as rat eaten, stable chemical nature is nontoxic to human body, "dead", be widely used in oil, chemical industry,
The field such as refrigeration, building, national defence, is particularly well-suited to the corrosion-resistant thermal insulation work of chemical pipeline, petroleum storage tank and coal gas, heating pipeline
Journey.
The waste materials such as substantial amounts of leftover pieces can be produced in the production process of foam glass, the material of these waste materials is foam glass
Glass, it is not only cheap extremely not subsidize fortune if treatment is applied to other occasions if directly abandoning, environmental pollution can be caused
Take, while also wasting social resources.The market price of foam glass waste material be generally 400~800 yuan it is per ton, foam glass
The daily raw material dosage of American Standard production line is about 30~40 tons, if can be given birth to foam glass waste material directly as raw material
Produce, economy and social value are all very considerable.
Foam glass waste material is not of uniform size, thus causes bulk density low, if processed not in time, it will occupy compared with
Big place.If air storage, not only influence environment, and foam glass waste material after drenching have to pass through drying can
Used as raw material, can otherwise have a strong impact on the quality of foam glass, it is necessary to be dried.
Authorization Notice No. discloses a kind of circulation production of foam glass for the patent of invention document of the B of CN 101328022
Technique, including following sequential steps：Get the raw materials ready：By raw material feeding system in glass making, grind, be then sent to powder cabin；Filling：Matching somebody with somebody in powder cabin
Material is uniformly filled in the diaphragm capsule through cleaning and spraying releasing agent after weighing；Vibration：Diaphragm capsule is vibrated, it is unnecessary in dispensing to make
Air discharge；Pressurization：Dispensing in diaphragm capsule is pressurizeed；Foaming：Diaphragm capsule is sent into foaming kiln, sintered-foaming-steady
Blank is made after fixed-cooling-heating；The demoulding：Diaphragm capsule kiln discharge, blank is taken out from diaphragm capsule, and is pushed into annealing kiln annealing；
Diaphragm capsule is circulated：Empty diaphragm capsule is used for step through cooling, cleaning, spraying releasing agent Posterior circle.
The invention is improved by the equipment employed in foam glass production technology, can realize foam glass
Continuous prodution, but, for the recycling of foam glass waste material, in addition it is also necessary to which raw material and technique are carried out further
Improve, the foam glass prepared using foam glass waste material is still possessed excellent performance.
The content of the invention
The invention provides a kind of foam glass production technology with foam glass waste material as raw material, not only can be to foam
Glass waste is timely and effectively processed, and saves production cost, meanwhile, the foam glass for preparing possesses good property
Energy.
A kind of foam glass production technology with foam glass waste material as raw material, comprises the following steps：Raw material is mixed equal
After even, successively through ball milling, compression molding, foaming, annealing, foam glass is obtained, the weight portion composition of raw material is as follows：
Foam glass waste material 90~95
Foaming agent 0.1~0.3
Flux 3~7；
The powder particle size obtained after ball milling is 80~120 μm；
The temperature control process of the foaming is：400~450 DEG C are warming up to the speed of 20~35 DEG C/min, then with 5~10
DEG C/speed of min is warming up to 700~750 DEG C, then is warming up to 830~900 DEG C, and 30~60 points of constant temperature with 2~4 DEG C/min
Clock completes foaming.
The foam glass waste material for obtaining daily is crushed first (can first be crushed using disintegrating machine, be then fed into
Pulverizer is crushed), the bulk density of the foam glass waste material before crushing is generally less than 100kg/m3, and after crushing
The bulk density of foam glass particle is generally higher than 1000kg/m3, utilization of area rate can be greatly improved.
Because daily foam glass production raw material used is different, produced foam glass waste material composition is also slightly poor
Different, the foam glass waste material of daily every production line is about 5~10 tons, in order to the composition for reducing foam glass waste material as far as possible is poor
It is different that influence is produced on obtained properties of foam glass, daily foam glass waste material is placed at least two single feed bins
It is interior, when the total amount of foam glass waste material meets the demand of production in one day, while multiple feed bins are opened, foam glass waste material is equal
Intermediate bin is loaded into evenly.
In foam glass waste material in intermediate bin, foaming agent and flux are added, compound is obtained, then by compound
It is transferred in ball mill, ball milling obtains powder.
Due to feeding ball mill is foam glass particle, therefore, the time of ball milling can greatly shorten, and power consumption is obvious
Reduce, equipment loss can also be reduced.
In order to farthest reduce due to fluctuation caused by raw material displacement, production equipment can be carried out accordingly
Improve, for example, a set of ultrafine crusher can be increased, be exclusively used in milled foam glass crushed aggregate, do so can also make to produce
Cheng Gengjia power savings.
Due to the raw material for directly being produced as foam glass using foam glass waste material, foam glass removal of impurities can be save
The operations such as matter, dedusting, dehumidifying, significantly reduce cost of labor, power cost, noise pollution and equipment loss, but, foam glass
The materials such as a certain amount of foaming agent, flux are with the addition of in glass waste material, it is necessary to consider that these are remained when recycling again
The influence of thing, it is impossible to enough directly to use the formula for producing foam glass as raw material with glass, but need again to each raw material
The technique of the particle diameter, foaming and annealing of powder is correspondingly improved after proportioning, grinding, so that the foam glass for preparing
Performance still be able to meet the demand of use occasion.
The foaming agent remained in foam glass waste material can not meet the demand for foaming again, in addition it is also necessary to carry out appropriate benefit
Fill, the usage amount of foaming agent is very few, it is impossible to meet the demand of foaming；Usage amount is excessive, can cause foam glass inside aperture mistake
It is big and have intercommunicating pore, reduce the intensity of foam glass.
During using foam glass waste material as raw material, substantial amounts of Al can be introduced2O3, Al2O3Introducing can play foam stabilizing work
With, the intensity of foam glass can be also lifted, but blowing temperature rising is at the same time also resulted in, cause energy consumption to raise.
In order to reduce blowing temperature, it is necessary to introduce appropriate flux in foam glass waste material.The addition of flux
It is appropriate, can otherwise influence the intensity of foam glass.
Preferably, the weight portion composition of raw material is as follows：
Foam glass waste material 91~94
Foaming agent 0.2~0.25
Flux 4~6.
Further preferably, the weight portion composition of raw material is as follows：
Foam glass waste material 92
Foaming agent 0.2~0.25
Flux 4~6.
After each raw material is well mixed, the powder of appropriate particle size is milled to using ball mill, the particle diameter of powder is big, then dilatancy
Difference, can form the thick foam glass of stomata, and the particle diameter of powder is too small, although dilatancy is good, but power consumption is big, and be unfavorable for hair
Infusion is evenly distributed.Preferably, the powder particle size for being obtained after ball milling is 90~110 μm.
Foam process is the committed step in foam glass production process, and programming rate is too fast, in causing foam glass
Pore opening it is uneven.
Because the thermal conductivity factor of foam glass is small, annealing cool speed is generally relatively slow, preferably, the temperature control of the annealing
Technique is：500~600 DEG C are cooled to the speed of 10~15 DEG C/min and maintain 3.5~4.5h, then with 1~2 DEG C/min's
Speed is cooled to 250 DEG C, and being finally cooled to room temperature with the speed of 0.5~2 DEG C/min completes annealing.
Preferably, the foaming agent is carbon black, the flux is sodium carbonate, prodan, boric acid, calgon
In at least one.
When carbon black is as foaming agent, the chemical affinity very little of unreacted carbon black and liquid glass, hardly by glass
Soaked, carbon black granules can be concentrated on the interface of liquid phase, play a part of stable bubble hole.
Further preferably, the foaming agent is carbon black, and the flux is sodium carbonate and boric acid, and the weight portion of raw material is constituted
It is as follows：
Using cooperatively for sodium carbonate and boric acid, can reduce the consumption of flux, it is to avoid the intensity to foam glass is produced
Influence.
Further preferably, the foaming agent is carbon black, and the flux is prodan and calgon, the weight of raw material
Amount part composition is as follows：
Using cooperatively for sodium carbonate and boric acid, can reduce the consumption of flux, it is to avoid the intensity to foam glass is produced
Influence.
In addition to foaming and annealing, in foam glass production process, also including other operations, for example, plastify, shape,
Cooling etc., these operations can use conventional practice of the prior art.
Further preferably, the temperature control process of the foaming is：450 DEG C are warming up to the speed of 25~30 DEG C/min, then
750 DEG C are warming up to the speed of 5~10 DEG C/min, then 830~860 DEG C, and constant temperature 30~60 are warming up to 2~4 DEG C/min
Minute completes foaming.
Further preferably, the temperature control process of the annealing is：600 DEG C are cooled to the speed of 10~15 DEG C/min and maintain
3.5~4.5h, is then cooled to 250 DEG C with the speed of 1~2 DEG C/min, is finally cooled to room temperature with the speed of 1~2 DEG C/min
Complete annealing.
The foam glass production technology with foam glass waste material as raw material that the present invention is provided, can realize that foam glass gives up
Recycling for material, reduces production cost, reduces the pollution to environment, meanwhile, the foam glass for preparing has good
Performance.
Brief description of the drawings
Fig. 1 is the equipment schematic diagram of powder collection process in foam glass production technology of the present invention of realizing；
Fig. 2 is to realize batch mixing and the equipment schematic diagram for grinding in foam glass production technology of the present invention.
Specific embodiment
Embodiment 1~3
(1) after being well mixed foam glass waste material, foaming agent and flux, ball milling is carried out, obtains powder, powder
Particle diameter is 80 μm；
Powder is obtained using process equipment as shown in Figure 1 and Figure 2, technological process is：Foam glass powder is lifted by elevator
To disintegrating machine 1, after tentatively crushing, pulverizer 2 is transferred to, be then sequentially sent to different feed bins 3 by conveyer belt (obtains on the same day
To foam glass waste material at least send into two feed bins 3), the foam glass waste material in each feed bin 3 is delivered to intermediate bin 4,
And be well mixed in intermediate bin 4, be used to place the auxiliary materials such as foaming agent, flux in feeding chamber 5, the material of intermediate bin 4 and
Auxiliary material in feeding chamber 5 is ground in sending into ball mill 6 jointly, obtains powder, each embodiment and comparative example in the present invention
Use identical process equipment and technological process.
(2) under 15MPa pressure, compression molding is carried out to powder, is subsequently placed in graphite crucible, in temperature programmed control Muffle
Heating and cooling treatment is carried out according to certain temperature program(me) in stove, the techniques such as foaming, annealing are completed, foam glass is obtained.
The temperature control process of foaming is：450 DEG C are warming up to the speed of 25 DEG C/min, are then heated up with the speed of 5 DEG C/min
To 700 DEG C, then 850 DEG C are warming up to 2~4 DEG C/min, and constant temperature completes foaming in 60 minutes.
The temperature control process of annealing is：600 DEG C are cooled to the speed of 10 DEG C/min and maintain 4.5h, then with 1 DEG C/min
Speed be cooled to 250 DEG C, finally with the speed of 0.5 DEG C/min be cooled to room temperature complete annealing.
Embodiment 4~6
(1) after being well mixed foam glass waste material, foaming agent and flux, ball milling is carried out, obtains powder, powder
Particle diameter is 90 μm；
(2) under 15MPa pressure, compression molding is carried out to powder, is subsequently placed in graphite crucible, in temperature programmed control Muffle
Heating and cooling treatment is carried out according to certain temperature program(me) in stove, the techniques such as foaming, annealing are completed, foam glass is obtained.
The temperature control process of foaming is：450 DEG C are warming up to the speed of 25 DEG C/min, are then heated up with the speed of 5 DEG C/min
To 700 DEG C, then 850 DEG C are warming up to 2~4 DEG C/min, and constant temperature completes foaming in 60 minutes.
The temperature control process of annealing is：600 DEG C are cooled to the speed of 10 DEG C/min and maintain 4.5h, then with 1 DEG C/min
Speed be cooled to 250 DEG C, finally with the speed of 0.5 DEG C/min be cooled to room temperature complete annealing.
Embodiment 7~8
(1) after being well mixed foam glass waste material, foaming agent and flux, ball milling is carried out, obtains powder, powder
Particle diameter is 100 μm；
(2) under 15MPa pressure, compression molding is carried out to powder, is subsequently placed in graphite crucible, in temperature programmed control Muffle
Heating and cooling treatment is carried out according to certain temperature program(me) in stove, the techniques such as foaming, annealing are completed, foam glass is obtained.
The temperature control process of foaming is：450 DEG C are warming up to the speed of 25 DEG C/min, are then heated up with the speed of 10 DEG C/min
To 750 DEG C, then 860 DEG C are warming up to 3 DEG C/min, and constant temperature completes foaming in 60 minutes.
The temperature control process of annealing is：600 DEG C are cooled to the speed of 10 DEG C/min and maintain 4.5h, then with 1 DEG C/min
Speed be cooled to 250 DEG C, finally with the speed of 1.5 DEG C/min be cooled to room temperature complete annealing.
Embodiment 9~10
(1) after being well mixed foam glass waste material, foaming agent and flux, ball milling is carried out, obtains powder, powder
Particle diameter is 120 μm；
(2) under 15MPa pressure, compression molding is carried out to powder, is subsequently placed in graphite crucible, in temperature programmed control Muffle
Heating and cooling treatment is carried out according to certain temperature program(me) in stove, the techniques such as foaming, annealing are completed, foam glass is obtained.
The temperature control process of foaming is：450 DEG C are warming up to the speed of 35 DEG C/min, are then heated up with the speed of 10 DEG C/min
To 750 DEG C, then 900 DEG C are warming up to 4 DEG C/min, and constant temperature completes foaming in 60 minutes.
The temperature control process of annealing is：600 DEG C are cooled to the speed of 15 DEG C/min and maintain 4.5h, then with 2 DEG C/min
Speed be cooled to 250 DEG C, finally with the speed of 2 DEG C/min be cooled to room temperature complete annealing.
Comparative example 1
(1) after being well mixed foam glass waste material, foaming agent and flux, ball milling is carried out, obtains powder, powder
Particle diameter is 50 μm；
(2) under 15MPa pressure, compression molding is carried out to powder, is subsequently placed in graphite crucible, in temperature programmed control Muffle
Heating and cooling treatment is carried out according to certain temperature program(me) in stove, the techniques such as foaming, annealing are completed, foam glass is obtained.
The temperature control process of foaming is：450 DEG C are warming up to the speed of 25 DEG C/min, are then heated up with the speed of 10 DEG C/min
To 750 DEG C, then 860 DEG C are warming up to 3 DEG C/min, and constant temperature completes foaming in 60 minutes.
The temperature control process of annealing is：600 DEG C are cooled to the speed of 10 DEG C/min and maintain 4.5h, then with 1 DEG C/min
Speed be cooled to 250 DEG C, finally with the speed of 1.5 DEG C/min be cooled to room temperature complete annealing.
Comparative example 2
(1) after being well mixed foam glass waste material, foaming agent and flux, ball milling is carried out, obtains powder, powder
Particle diameter is 100 μm；
(2) under 15MPa pressure, compression molding is carried out to powder, is subsequently placed in graphite crucible, in temperature programmed control Muffle
Heating and cooling treatment is carried out according to certain temperature program(me) in stove, the techniques such as foaming, annealing are completed, foam glass is obtained.
The temperature control process of foaming is：450 DEG C are warming up to the speed of 25 DEG C/min, are then heated up with the speed of 10 DEG C/min
To 750 DEG C, then 900 DEG C are warming up to 5 DEG C/min, and constant temperature completes foaming in 60 minutes.
The temperature control process of annealing is：600 DEG C are cooled to the speed of 15 DEG C/min and maintain 4.5h, then with 3 DEG C/min
Speed be cooled to 250 DEG C, finally with the speed of 3 DEG C/min be cooled to room temperature complete annealing.
The component proportion of each embodiment and comparative example is as shown in table 1, table 2.
Table 1
Table 2
The performance characterization of each embodiment and comparative example the results are shown in Table 3, table 4.
Table 3
Table 4
The particle diameter of powder and the temperature control of foaming and annealing after ball milling are can be seen that by result in table 3, table 4 can
Influence is produced on gained properties of foam glass, the foam glass obtained using the processing of foam glass waste material has pressure resistance very high
Degree, also disclosure satisfy that the application demand of foam glass in averag density and thermal conductivity factor.
Claims (1)
1. a kind of foam glass production technology with foam glass waste material as raw material, comprises the following steps：Raw material is well mixed
Afterwards, foam glass is obtained through ball milling, compression molding, foaming, annealing successively, it is characterised in that the weight portion composition of raw material is such as
Under：
The powder particle size obtained after ball milling is 80~120 μm；The temperature control process of the foaming is：With the speed of 25~30 DEG C/min
450 DEG C are warming up to, then 750 DEG C is warming up to the speed of 5~10 DEG C/min, then 830~860 are warming up to 2~4 DEG C/min
DEG C, and constant temperature completes foaming in 30~60 minutes；
The temperature control process of the annealing is：600 DEG C are cooled to the speed of 10~15 DEG C/min and maintain 3.5~4.5h, then
250 DEG C are cooled to the speed of 1~2 DEG C/min, being finally cooled to room temperature with the speed of 1~2 DEG C/min completes annealing.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430986A (en) * | 2016-08-30 | 2017-02-22 | 江苏德和绝热科技有限公司 | High-performance foam glass as well as raw material and preparation method thereof |
| CN107500551A (en) * | 2017-09-19 | 2017-12-22 | 常州诺丁精密机械制造有限公司 | A kind of heat barrier foam glass and preparation method thereof |
| CN108929041A (en) * | 2018-08-15 | 2018-12-04 | 日鸿半导体材料（南通）有限公司 | A kind of fused silica powder and preparation method thereof |
| CN110342826A (en) * | 2019-07-10 | 2019-10-18 | 江苏德和绝热科技有限公司 | Using foam glass waste material as the foam glass of main material and its production method |
| CN110790508B (en) * | 2019-11-15 | 2022-03-22 | 黄山市晶特美新材料有限公司 | Cobalt blue agent for glass slurry and preparation method thereof |
| CN110818268A (en) * | 2019-12-10 | 2020-02-21 | 萍乡市恒升特种材料有限公司 | Preparation method of high-strength foam glass |
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| JP2005041754A (en) * | 2003-07-25 | 2005-02-17 | Nippon Kensetsu Gijutsu Kk | Method for manufacturing foamed glass |
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