CN103755145A - Method and equipment for preparing low-temperature foam glass in pressurized puffing manner - Google Patents
Method and equipment for preparing low-temperature foam glass in pressurized puffing manner Download PDFInfo
- Publication number
- CN103755145A CN103755145A CN201310724247.3A CN201310724247A CN103755145A CN 103755145 A CN103755145 A CN 103755145A CN 201310724247 A CN201310724247 A CN 201310724247A CN 103755145 A CN103755145 A CN 103755145A
- Authority
- CN
- China
- Prior art keywords
- low temperature
- foam glass
- pressure
- puffing
- expansion chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Glass Compositions (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a method and equipment for preparing low-temperature foam glass in a pressurized puffing manner. The method comprises the following steps: putting low-temperature foam glass granular intermediate materials into a sealed pressure container, and heating the pressure container; and rapidly decompressing when the temperature is heated to 200-350 DEG C and the pressure strength is 20-30 barometric pressure. The equipment comprises a puffing chamber, a heating sleeve, a quick exhaust valve, a feeding hole, a discharge hole and a barometer; the puffing chamber is a sealed pressure container with a feeding hole; the heating sleeve supplies heat to the overall puffing chamber; the quick exhaust valve is arranged between the discharge hole and the puffing chamber and used for rapidly decompressing; the barometer is connected with the puffing chamber and used for displaying internal pressure of the puffing chamber. The low-temperature foam glass is puffed by using the popcorn principle, and the puffing ratio of the obtained low-temperature foam glass ascends, so that the insulated aggregate packing density of the low-temperature foam glass is reduced, and the heat-conductivity coefficient is further reduced.
Description
Technical field
The invention belongs to multicellular glass preparation and apparatus field, particularly a kind of expanded method and equipment thereof of preparing low temperature multicellular glass that pressurizes.
Background technology
The inorganic heat preserving aggregate being widely used in now in building heat preservation goods mainly contains the inorganic materials such as pearlstone, glass bead and light ceramic.Pearlstone and glass bead are by 1000～1300 ℃ of high temperature, the crystal water gasification in perlite mineral to be expanded and obtained, and haydite is that ground etc. is made by the sintering of 1000～1200 ℃.The production of these inorganic heat preserving aggregates all obtains inorganic mineral by high temperature action, need to consume a large amount of energy, causes severe high-temperature work environment.Produce a large amount of high-temp waste gas simultaneously, increase vent gas treatment cost and risk of environmental pollution.And the raw material of inorganic heat preserving aggregate is perlite and various ground ore deposit, although huge at China's reserves, be Nonrenewable resources after all, in the face of increasing the more and more faster market requirement, there will be eventually the awkward situation of scarcity of resources.At present, flourish along with inorganic heat preservation building material market, the price Ye Yi road of the inorganic minerals such as perlite is high, and the consequent is the continuous rising of raw materials cost, finally can have influence on the health of inorganic heat preservation building materials market, lasting development.
Therefore, select can synthetic substitute low temperature multicellular glass do heat preserving aggregate.Multicellular glass is called again sintered glass, the spilehole that its inside is full of countless openings or remains silent, and the area of pore accounts for 80%～90% of cumulative volume, and pore size is 0.5～5mm, and what also have is little of several microns.It is a kind of thermal insulation (cold insulation), sound absorption, protection against the tide, fp light high-strength building material and finishing material of superior performance, and A level is not fired and the same life-span of buildings.
Publication number CN103288353A(application number 201310195847.5) preparation method of the multicellular glass mentioned in " a kind of low-density and high-strength borate crystallite foam glass " is that frit adds Nucleating Agent and whipping agent, after grinding, in the smelting furnace of 775 ℃, fires.Publication number CN102001832A(application number 201010550152.0) disclosed preparation method in " a kind of preparation method of foam glass particle ", be that frit is injected to granular formwork, after burning till, obtain particulate material in roller kiln.Publication number CN102863143A(application number 2012010389248.2) " a kind of without the mould foaming continuous foamed device of foam glass and foam process " is disclosed is admixtion free foaming and then the method for cutting in roller kiln, during this time through the process of heating-insulation-annealing.The foamed glass foaming of 3 patents mentioning is all realized by whipping agent, and blowing temperature is very high (more than at least 750 ℃) all, and is all traditional Thermal Cycling of heating-insulation-cooling (or annealing), is all the process of high energy consumption.
The publication CN102795781A(number of applying for a patent 201210295631.1) " a kind of low temperature foam glass thermal insulation material and preparation method thereof " disclosed low temperature multicellular glass is that to utilize sodium borosilicate be that solution does raw material, the multicellular glass that adopts sol-gel method to prepare.In patent, mention, utilize colloid chemistry method to make after the middle material of particulate state, through heat treatment process, obtain low temperature foam glass particle material.In patent, the foaming of multicellular glass is by free water and in conjunction with aqueous vaporization, forms cavity and form, therefore, although blowing temperature is reduced to 250 ℃ from 800 ℃ of routine, but the reduction of temperature has also caused the reduction of the expansion multiplying power of multicellular glass, approximately only have 5 left and right, density is at 70～80kg/m
3, thermal conductivity 0.05w/ (mk).
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of expanded method and equipment thereof of preparing low temperature multicellular glass that pressurizes, the method is simple, and suitability for industrialized production is feasible, and the low temperature multicellular glass expansion ratio obtaining rises, tap density declines, and heat-insulating property further promotes.
A kind of expanded method of preparing low temperature multicellular glass of pressurizeing of the present invention, comprising:
Material in the middle of low temperature foam glass particle shape is put into airtight pressurized vessel, pressurized vessel is heated, along with the rising of temperature, internal tank pressure constantly increases, quick pressure releasing when being heated to 200～350 ℃ and pressure and being 20～30 normal atmosphere, in the middle of low temperature foam glass particle shape, the inner high pressure steam rapid expansion of material makes the low temperature multicellular glass of high bulking multiplying power.
In the middle of described low temperature foam glass particle, material is in advance through pulverizing and sieving.
In the middle of described low temperature multicellular glass, material is prepared by sol-gel method.
A kind of expanded equipment of preparing low temperature multicellular glass that pressurizes of the present invention, comprises expansion chamber, heating jacket, fast-discharge valve, opening for feed, discharge port and weather gage; Described expansion chamber is the airtight pressurized vessel that is provided with opening for feed; Described heating jacket provides heat for whole expansion chamber; Described fast-discharge valve is between discharge port and expansion chamber, for quick pressure releasing; Described weather gage is connected with expansion chamber, for showing the internal pressure of expansion chamber.
Method and the equipment thereof of a kind of expanded low temperature multicellular glass that pressurizes of the present invention, application " puffed rice " principle increases the expansion ratio of low temperature multicellular glass; Puffed rice is a kind of very common puffed food.The principle of puffed rice is to get appropriate corn to put into snuff pot, and seals top cover, then rice krispies pot is placed on stove and constantly rotates and make it after thermally equivalent, just can produce puffed rice.This is that the temperature in pot constantly raises because in the process of heating, and in pot, the pressure of gas also constantly increases.When temperature is elevated to a certain degree, the grain of rice is deliquescing gradually just, and the most of moisture in the grain of rice becomes water vapour.Because temperature is higher, the pressure of water vapour is very large, and the grain of rice of deliquescing is expanded.But now the inside and outside pressure of the grain of rice is balance, so the grain of rice can not pop in pot.When pressure in pot is raised to 4～5 normal atmosphere, throw open the top cover of snuff pot, the gas in pot expands rapidly, pressure reduces very soon, makes the inside and outside pressure difference of the grain of rice become large, causes grain of rice inner high voltage water vapour also sharply to expand, the instantaneous grain of rice that pops, puffed rice.This principle can be applied in the production technique of low temperature multicellular glass.
At present the mode of production of low temperature multicellular glass by sol method, make exactly in the middle of after material through pulverizing, be filtered into particulate material, be then heated to 300 ℃ of expanded one-tenth in left and right and have the multicellular glass aggregate of closed pores structure.And material is very similar to the character of corn, rice in the middle of particulate state, all there is certain water content, under certain temperature and pressure difference, can expand.So, the mode of production of low temperature multicellular glass can be used for reference the making method of puffed rice, utilizes temperature and pressure difference to produce multicellular glass aggregate.
As puffed rice, material in the middle of the foam glass particle shape crushing is put into pressure cooker, when temperature exceedes 150 ℃, the combination water in middle material can depart from lattice becomes free water, then becomes water vapour.In enclosed space, the increase of water vapour can cause the rising of internal pressure.When pressure rises to 20～30 normal atmosphere, suddenly by fast decompression valve pressure release, due to the pressure difference inside and outside idiosome powder, cause the water vapour of idiosome powder inside also sharply to expand until external and internal pressure equates.So just can obtain the low temperature multicellular glass aggregate with closed pores structure.The pressure that only need be heated in pressurized vessel in this process gets final product quick pressure releasing to a certain extent, without being incubated and temperature-fall period.The low temperature multicellular glass expansion ratio that the present invention obtains rises, and the low temperature multicellular glass heat preserving aggregate tap density of acquisition declines, and thermal conductivity further declines.
Beneficial effect:
The present invention utilizes puffed rice principle to carry out expanded low temperature multicellular glass, the expansion multiplying power of low temperature multicellular glass aggregate can be risen to more than 10, and the highest have 20 times, and the tap density of the particles of aggregates making is minimum can be down to 40kg/m
3, the minimum 0.03w/ of thermal conductivity (mk).
Accompanying drawing explanation:
Fig. 1 is pressurization bulking equipment schematic diagram of the present invention; Wherein 1-expansion chamber; 2-heating jacket; 3-fast-discharge valve; 4-discharge port; 5-weather gage; 6-opening for feed.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Pressurize expanded low temperature multicellular glass equipment as shown in Figure 1, whole plant is by expansion chamber, heating jacket, fast-discharge valve, discharge port, weather gage.Expanded in the expansion chamber that low temperature multicellular glass idiosome to be expanded does at pressurized vessel, heating jacket provides heat for whole expansion chamber.While adding expansion chamber to 200～350 ℃ of heat-seal, low temperature multicellular glass idiosome material expansion chamber's air pressure inside in foaming raises, for pressure equilibrium, and the progressively rising consistent with expansion chamber air pressure of the air pressure of idiosome material; When the normal atmosphere of air pressure to 20～30 of expansion chamber that weather gage shows, by fast-discharge valve, rapidly expansion chamber is carried out to pressure release, air pressure instantaneous reduction in expansion chamber is to normal pressure, because the low temperature multicellular glass that inside and outside pressure difference expands is rapidly entered in ready container by discharge port.
By sodium borosilicate, be to expect in the middle of particulate state is pulverized, is filtered into gel, put into pressurized vessel, be heated to 300 ℃, then quick pressure releasing, collects the low temperature foam glass particle of producing at discharge port bagging.Particle median size has 1～2mm, and tap density is about 50kg/m
3, expansion ratio is 12, thermal conductivity is 0.035w/ (mk).
By sodium borosilicate, be to expect in the middle of particulate state is pulverized, is filtered into gel, put into pressurized vessel, be heated to 250 ℃, then quick pressure releasing, collects the low temperature foam glass particle of producing at discharge port bagging.Particle median size has 0.5～0.9mm, and tap density is about 60kg/m
3, expansion ratio is 10, thermal conductivity is 0.040w/ (mk).
By sodium borosilicate, be to expect in the middle of particulate state is pulverized, is filtered into gel, put into pressurized vessel, be heated to 350 ℃, then quick pressure releasing, collects the low temperature foam glass particle of producing at discharge port bagging.Particle median size has 3～4mm, and tap density is about 45kg/m
3, expansion ratio is 18, thermal conductivity is 0.033w/ (mk).
By sodium borosilicate, be to expect in the middle of particulate state is pulverized, is filtered into gel, put into pressurized vessel, be heated to 350 ℃, then quick pressure releasing, collects the low temperature foam glass particle of producing at discharge port bagging.Particle median size has 4～4.5mm, and tap density is about 39kg/m
3, expansion ratio is 20, thermal conductivity is 0.030w/ (mk).
Claims (4)
1. the expanded method of preparing low temperature multicellular glass of pressurization, comprising:
Material in the middle of low temperature foam glass particle shape is put into airtight pressurized vessel, pressurized vessel is heated, along with the rising of temperature, internal tank pressure constantly increases, quick pressure releasing when being heated to 200～350 ℃ and pressure and being 20～30 normal atmosphere, in the middle of low temperature foam glass particle shape, the inner high pressure steam rapid expansion of material, obtains low temperature multicellular glass.
2. a kind of expanded method of preparing low temperature multicellular glass of pressurizeing according to claim 1, is characterized in that: in the middle of described low temperature foam glass particle, material is in advance through pulverizing and sieving.
3. a kind of expanded method of preparing low temperature multicellular glass of pressurizeing according to claim 1, is characterized in that: in the middle of described low temperature multicellular glass, material is prepared by sol-gel method.
4. the expanded equipment of preparing low temperature multicellular glass of pressurization, comprises expansion chamber (1), heating jacket (2), fast-discharge valve (3), opening for feed (4), discharge port (6) and weather gage (5); Described expansion chamber (1) is the airtight pressurized vessel that is provided with opening for feed (6); Described heating jacket (2) provides heat for whole expansion chamber (1); Described fast-discharge valve (3) is positioned between discharge port (4) and expansion chamber (1), for quick pressure releasing; Described weather gage (5) is connected with expansion chamber (1), for showing the internal pressure of expansion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724247.3A CN103755145B (en) | 2013-12-24 | 2013-12-24 | A kind of pressurize expanded method and the equipment thereof of preparing cryogenic foam glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724247.3A CN103755145B (en) | 2013-12-24 | 2013-12-24 | A kind of pressurize expanded method and the equipment thereof of preparing cryogenic foam glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103755145A true CN103755145A (en) | 2014-04-30 |
| CN103755145B CN103755145B (en) | 2016-04-27 |
Family
ID=50522511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310724247.3A Expired - Fee Related CN103755145B (en) | 2013-12-24 | 2013-12-24 | A kind of pressurize expanded method and the equipment thereof of preparing cryogenic foam glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103755145B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119708619A (en) * | 2025-02-28 | 2025-03-28 | 合肥工业大学 | Thermosetting epoxy resin accelerated degradation method and device based on popcorn effect |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5686031A (en) * | 1995-01-05 | 1997-11-11 | Regents Of The University Of California | Method for rapidly producing microporous and mesoporous materials |
| CN201006965Y (en) * | 2006-12-31 | 2008-01-16 | 张德云 | Cellulose continuous bulking machine |
| CN101143767A (en) * | 2006-09-14 | 2008-03-19 | 任兆磊 | Yellow phosphorus slag light building material |
| CN202504132U (en) * | 2012-02-29 | 2012-10-31 | 新疆农业科学院农业机械化研究所 | Low-temperature air flow puffing equipment of fruits |
| CN102795780A (en) * | 2012-08-20 | 2012-11-28 | 宁波荣山新型材料有限公司 | Low-temperature microcrystalline foam glass and preparation method thereof |
| CN102795781A (en) * | 2012-08-20 | 2012-11-28 | 宁波荣山新型材料有限公司 | Low-temperature foam glass thermal insulation material and preparation method thereof |
| CN102807326A (en) * | 2012-08-20 | 2012-12-05 | 宁波荣山新型材料有限公司 | Polymer-modified low temperature foaming glass thermal insulation material and preparation method thereof |
-
2013
- 2013-12-24 CN CN201310724247.3A patent/CN103755145B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5686031A (en) * | 1995-01-05 | 1997-11-11 | Regents Of The University Of California | Method for rapidly producing microporous and mesoporous materials |
| CN101143767A (en) * | 2006-09-14 | 2008-03-19 | 任兆磊 | Yellow phosphorus slag light building material |
| CN201006965Y (en) * | 2006-12-31 | 2008-01-16 | 张德云 | Cellulose continuous bulking machine |
| CN202504132U (en) * | 2012-02-29 | 2012-10-31 | 新疆农业科学院农业机械化研究所 | Low-temperature air flow puffing equipment of fruits |
| CN102795780A (en) * | 2012-08-20 | 2012-11-28 | 宁波荣山新型材料有限公司 | Low-temperature microcrystalline foam glass and preparation method thereof |
| CN102795781A (en) * | 2012-08-20 | 2012-11-28 | 宁波荣山新型材料有限公司 | Low-temperature foam glass thermal insulation material and preparation method thereof |
| CN102807326A (en) * | 2012-08-20 | 2012-12-05 | 宁波荣山新型材料有限公司 | Polymer-modified low temperature foaming glass thermal insulation material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119708619A (en) * | 2025-02-28 | 2025-03-28 | 合肥工业大学 | Thermosetting epoxy resin accelerated degradation method and device based on popcorn effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103755145B (en) | 2016-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108387712A (en) | A kind of coal petrography unidirectionally heated and bidirectional stress experimental system for simulating and method | |
| CN103755145B (en) | A kind of pressurize expanded method and the equipment thereof of preparing cryogenic foam glass | |
| CN201745936U (en) | Double layer heat preservation water tank | |
| CN204016040U (en) | Crusty pancake oven | |
| CN105800930A (en) | Heat preservation and heat insulation double-layer glass cup | |
| CN104557129B (en) | A kind of heat-preserving sintered brick and preparation method thereof | |
| JP4850868B2 (en) | Ceramic sintered body in which flat continuous pores are laminated and oriented, and method for producing the same | |
| CN204104737U (en) | Changing temperature-pressure-difference and puffing equipment | |
| CN103788922A (en) | Static crushing agent | |
| CN101134559A (en) | Fast and energy-saving method and device for preparing Mg2NiH4 hydride | |
| CN206089060U (en) | Microwave drying oven | |
| CN103240281A (en) | A thermal insulation device for rolling magnesium alloy conveying roller table | |
| CN109208324A (en) | A kind of preparation method of interior expansion nano hole heat-insulating material | |
| CN104926171A (en) | Method for preparing expanded products by using fine perlite powder | |
| CN204085163U (en) | Outer hot oxygen-complementing type roller kilns | |
| CN202063839U (en) | Expansion furnace for hollow glass microspheres | |
| CN101968301A (en) | Method for drying biomass by using normal temperature | |
| Shahzad et al. | Design and development of efficient domestic electric cum solar oven | |
| CN202021659U (en) | Equipment for performing vacuum drying and defibering on plant fiber | |
| CN206654373U (en) | A kind of high-efficiency insulated pop can | |
| CN208869720U (en) | A kind of tubular polycrystalline silicon ingot casting graphite field | |
| CN206618143U (en) | A kind of air cooling equipment | |
| CN105585296B (en) | Siliceous fireproof heated board of CS carbon fibers and preparation method thereof | |
| CN203642661U (en) | Energy-saving vertical kiln | |
| CN208805045U (en) | A kind of non-ferrous metal sintering furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210726 Address after: 464000 Shangtianti nonmetallic mine management zone, Xinyang City, Henan Province Patentee after: Henan Rongshan New Material Co.,Ltd. Address before: 315899 No. 68, Huanghai Road, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO LONGSHAN ADVANCED MATERIALS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |