CN107417072A - A kind of device of liquid blast furnace production foam glass - Google Patents
A kind of device of liquid blast furnace production foam glass Download PDFInfo
- Publication number
- CN107417072A CN107417072A CN201710468711.5A CN201710468711A CN107417072A CN 107417072 A CN107417072 A CN 107417072A CN 201710468711 A CN201710468711 A CN 201710468711A CN 107417072 A CN107417072 A CN 107417072A
- Authority
- CN
- China
- Prior art keywords
- slag
- blast furnace
- furnace
- electrode
- cinder
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000011494 foam glass Substances 0.000 title abstract description 7
- 239000002893 slag Substances 0.000 claims abstract description 47
- 239000003818 cinder Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000010891 electric arc Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 5
- 239000011707 mineral Substances 0.000 claims abstract description 5
- 239000011819 refractory material Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000000137 annealing Methods 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 239000011777 magnesium Substances 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 4
- 238000004512 die casting Methods 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 230000003137 locomotive effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 2
- 239000012774 insulation material Substances 0.000 claims description 2
- -1 mine tailings Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000007115 recruitment Effects 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
Abstract
The invention discloses a kind of liquid blast furnace production foam glass device, mainly by：Slag truck ladle（1）, middle slag tank（2）, ac arc furnace（3）, cooler bin（4）, mixer（5）And conticaster（6）Composition, the present invention are solved the problems, such as stockpiling of the blast furnace slag as solid waste, are effectively utilized the waste heat of molten blast furnace slag, realized the recycling recycling to molten blast furnace slag, improve resource utilization using blast furnace hot slag production foam glass；And its abundant mineral matter is excellent by high melt overall mechanical properties.Use furnace bottom overflow slag mode provide high temperature melt cinder ensure that it is continuous for production line provide regime flow, temperature, composition, viscosity slag raw material, ensure that production line output high standard, architecture of high quality ornament materials product lay the foundation, the resistance to material of electric arc furnaces is washed away when reducing charging simultaneously, ensure that the resistance to material continuous use life-span.
Description
Technical field
The invention belongs to utilization of waste as resource field, is related to one kind and utilizes liquid blast furnace comprehensive utilization technique, special
It is not related to a kind of device of liquid blast furnace production foam glass.
Background technology
Foam glass be a kind of thermal insulation of superior performance (cold insulation), sound absorption, protection against the tide, fireproof light high-strength building material and
Ornament materials, use temperature range are subzero 196 degree to 450 degree, and A levels are non-ignitable to be almost with building same life-span, moisture permeable coefficient
0.Although other novel heat insulation materials emerge in an endless stream, foam glass is so that it is permanent, security, high reliability are exhausted in low-heat
The fields such as edge, tidal defense engineering, sound absorption are in occupation of increasingly consequence.
Liquid blast furnace temperature is good residual heat resources more than 1400 DEG C, the waste heat phase that blast furnace cinder per ton contains
When in heat caused by 60Kg standard coal completely burneds.For the melting sensible heat of high-temperature liquid state blast-furnace slag, State of Blast Furnace is developed
The height of slag adds value, directly uses liquid blast-furnace slag, studies and directly prepare foam by liquid blast-furnace slag
Glass, economic benefit is substantially increased, while effectively prevent the oxysulfide that blast furnace cinder discharges during water quenching.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of liquid height for above-mentioned the shortcomings of the prior art
Clinker produce ornament materials device, mainly by：Slag truck ladle（1）, middle slag tank（2）, ac arc furnace（3）, cooler bin（4）、
Mixer（5）And conticaster（6）Composition, slag truck ladle（1）Liquid blast furnace is accessed by locomotive from tap cinder mouth to be transported to positioned at friendship
Flow electric arc furnaces（3）The middle slag tank on top（2）, middle slag tank（2）By liquid blast furnace through slag inlet（321）It is slowly added to exchange
Electric arc furnaces（3）, and by auxiliary material entrance（322）Add raw mineral materials well mixed according to a certain percentage, mine tailings, flyash
Deng flowing cooler bin after being heated to 1400 DEG C ~ 1500 DEG C（4）, and foamed dose of entrance（41）Stirring is flowed out to after adding foaming agent
Machine（5）It has been stirred conticaster（6）Die casting and molding, the annealing temperature that carries out annealing after shaping is 550~600 DEG C, annealing
Time is 2~3 hours；The ac arc furnace（3）Mainly by body of heater（31）And bell（32）Two parts form, bell（32）Position
In body of heater（31）Top, provided with slag inlet（321）With auxiliary material entrance（322）；Body of heater（31）For cylinder-like structure, its bottom is provided with
Three-phase alternating current electrode（33）, three-phase alternating current electrode（33）Surrounded for three sector structures it is one circular, by insulating between three-phase
Refractory material（36）Carry out insulation gap, three-phase alternating current electrode（33）Each electrode respectively by metal electrode（331）And fire resisting
Electrode（332）Two parts form, metal electrode（331）The diverging electrodes made using a plurality of copper rod are welded on group on fan-shaped copper coin
Into the length of diverging electrodes is the 2/3 of furnace bottom thickness, and fan-shaped copper coin part is exposed at body of heater（31）It is outside；Positioning metal electrode
（331）Use insulating refractories first afterwards（36）Layering is made firm by ramming to the 1/3 of furnace bottom part gross thickness, then in three-phase alternating current electrode
（33）Position is continued layering using conduction refractory and made firm by ramming, and remainder continues to use insulating refractories（36）Layering has been made firm by ramming
Into；Body of heater（31）Side is provided with the cinder notch that overflows（38）, overflow cinder notch（38）Drawn by furnace bottom side and upward to the 1/5 of body of heater height
Place's connection cooler bin (4)；In excessive cinder notch（38）Inside top be provided with temperature measuring equipment（381）.
Three-phase alternating current electrode（33）Connect respectively system power supply A B C three-phase furnace low pressure sides.
The fire resisting electrode（332）For the compound ramming material of magnesium carbonaceous of conduction, resistivity≤3 × 10 after carbonization-4
Ω m, bulk density >=2.8g/cm3, compressive resistance >=20Mpa；Pole piece insulate（35）And insulating refractories（36）For insulation
The calcareous compound ramming material of magnesium.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings；
Accompanying drawing 1 show present system structural representation
Accompanying drawing 2 show arc furnace bottom of the present invention top partial view diagram
Explanation is marked in figure
1st, slag truck ladle, 2, middle slag tank, 3, electric arc furnaces, 4, cooler bin, 5, mixer, 6, conticaster, 31, body of heater, 32, bell,
33rd, three-phase alternating current electrode, 35, pole piece insulation, 36, insulating refractories, 37, refractory brick, 38, overflow cinder notch, 39, residue mouth,
321st, slag inlet, 322, auxiliary material entrance, 331, metal electrode, 332, fire resisting electrode, 381, temperature measuring equipment, 41, foaming agent inlet.
Embodiment
A kind of device of present invention liquid blast furnace production ornament materials, mainly by：Slag truck ladle（1）, middle slag tank（2）、
Ac arc furnace（3）, cooler bin（4）, mixer（5）And conticaster（6）Composition, slag truck ladle（1）By locomotive from tap cinder mouth
Liquid blast furnace is accessed to be transported to positioned at ac arc furnace（3）The middle slag tank on top（2）, middle slag tank（2）By liquid blast furnace
Through slag inlet（321）It is slowly added to ac arc furnace（3）, and by auxiliary material entrance（322）Addition is well mixed according to a certain percentage
Raw mineral materials, mine tailings, flyash etc., flow cooler bin after being heated to 1400 DEG C ~ 1500 DEG C（4）, and foamed dose of entrance
（41）Mixer is flowed out to after adding foaming agent（5）It has been stirred conticaster（6）Die casting and molding, annealed after shaping
Annealing temperature is 550~600 DEG C, and annealing time is 2~3 hours；The ac arc furnace（3）Mainly by body of heater（31）And bell
（32）Two parts form, bell（32）Positioned at body of heater（31）Top, provided with slag inlet（321）With auxiliary material entrance（322）；Body of heater
（31）For cylinder-like structure, its bottom is provided with three-phase alternating current electrode（33）, three-phase alternating current electrode（33）Enclosed for three sector structures
Into it is one circular, by insulating refractories between three-phase（36）Carry out insulation gap, three-phase alternating current electrode（33）Each electricity
Pole is respectively by metal electrode（331）With fire resisting electrode（332）Two parts form, metal electrode（331）Made using a plurality of copper rod
Diverging electrodes be welded on fan-shaped copper coin and form, the length of diverging electrodes is the 2/3 of furnace bottom thickness, and fan-shaped copper coin part is exposed
In body of heater（31）It is outside；Positioning metal electrode（331）Use insulating refractories first afterwards（36）Layering is made firm by ramming total to furnace bottom part
The 1/3 of thickness, then in three-phase alternating current electrode（33）Position is continued layering using conduction refractory and made firm by ramming, and remainder continues
Use insulating refractories（36）Completion is made in layering firm by ramming；Body of heater（31）Side is provided with the cinder notch that overflows（38）, overflow cinder notch（38）By furnace bottom side
Draw and upward to connection cooler bin (4) at the 1/5 of body of heater height in face；In excessive cinder notch（38）Inside top provided with thermometric fill
Put（381）.
Three-phase alternating current electrode（33）Connect respectively electric furnace low pressure side power supply A B C three-phases, in furnace interior shape after energization
Into the rotating excitation field of fixed-direction, play a part of simultaneously to electromagnetic agitation in stove in smelting process.
The fire resisting electrode（332）For the compound ramming material of magnesium carbonaceous of conduction, resistivity≤3 × 10 after carbonization-4
Ω m, bulk density >=2.8g/cm3, compressive resistance >=20Mpa；Pole piece insulate（35）And insulating refractories（36）For insulation
The calcareous compound ramming material of magnesium.
Pass through temperature measuring equipment（381）The excessive cinder notch of monitoring electric arc furnaces in real time（38）Interior melt cinder temperature, reach 1400 DEG C in temperature
Before, keep liquid level in arc furnace to be less than the cinder notch that overflows（38）, and high current is smelted, when temperature reach 1400 DEG C ~
After 1500 DEG C, middle slag tank（2）Start to slag inlet（321）Blast furnace melt cinder is supplemented, high temperature melt cinder is passed through the cinder notch that overflows（38）Overflow
Go out；And by auxiliary material entrance while blast furnace melt cinder is supplemented（322）Auxiliary material is added, by adjusting electric arc furnace smelting electric current, control
The addition of the magnitude of recruitment and auxiliary material of blast furnace melt cinder, high temperature melt cinder is set endlessly to be flowed out from excessive cinder notch.When needing the long period
Blowing out or when being overhauled to electric arc furnaces, it is necessary to open residue mouth（39）Furnace interior residue is excluded, to prevent cooled and solidified；Overhaul
Into rear using fire clay closure residue mouth（39）.
The present invention uses raw material to solve the problems, such as stockpiling of the blast furnace slag as solid waste, effectively for blast furnace hot slag
The waste heat of molten blast furnace slag is make use of, the recycling recycling to molten blast furnace slag is realized, improves resource utilization；And
Its abundant mineral matter is excellent by high melt overall mechanical properties.It high temperature melt cinder is provided ensure that using furnace bottom slag mode of overflowing
It is continuous for production line provide regime flow, temperature, composition, viscosity slag raw material, it is ensured that production line output high standard, high-quality
Building decorative materials product lays the foundation, while the resistance to material of electric arc furnaces is washed away when reducing charging, ensure that resistance to material continuous use
Life-span.
Claims (5)
1. a kind of device of liquid blast furnace production ornament materials, mainly by：Slag truck ladle（1）, middle slag tank（2）, alternating current arc
Stove（3）, cooler bin（4）, mixer（5）And conticaster（6）Composition, it is characterised in that：Slag truck ladle（1）By locomotive from tap cinder
Mouth accesses liquid blast furnace and is transported to positioned at ac arc furnace（3）The middle slag tank on top（2）, middle slag tank（2）By liquid blast furnace
Slag is through slag inlet（321）It is slowly added to ac arc furnace（3）, and by auxiliary material entrance（322）It is equal to add mixing according to a certain percentage
Even raw mineral materials, mine tailings, flyash etc., flow cooler bin after being heated to 1400 DEG C ~ 1500 DEG C（4）, and foamed dose enters
Mouthful（41）Mixer is flowed out to after adding foaming agent（5）It has been stirred conticaster（6）Die casting and molding, moved back after shaping
Fiery annealing temperature is 550~600 DEG C, and annealing time is 2~3 hours.
A kind of 2. according to claim 1, device of liquid blast furnace production ornament materials, it is characterised in that：The exchange
Electric arc furnaces（3）Mainly by body of heater（31）And bell（32）Two parts form, bell（32）Positioned at body of heater（31）Top, provided with slag input
Mouthful（321）With auxiliary material entrance（322）；Body of heater（31）For cylinder-like structure, its bottom is provided with three-phase alternating current electrode（33）, three is intersecting
Flow electrode（33）Surrounded for three sector structures it is one circular, by insulating refractories between three-phase（36）Between being insulated
Every three-phase alternating current electrode（33）Each electrode respectively by metal electrode（331）With fire resisting electrode（332）Two parts form, gold
Belong to electrode（331）The diverging electrodes made using a plurality of copper rod are welded on fan-shaped copper coin and formed, and the length of diverging electrodes is stove
The 2/3 of base thickness degree, fan-shaped copper coin part are exposed at body of heater（31）It is outside；Positioning metal electrode（331）Use insulated fireproof first afterwards
Material（36）Layering is made firm by ramming to the 1/3 of furnace bottom part gross thickness, then in three-phase alternating current electrode（33）Position uses conductive fire resisting
Material continues layering and made firm by ramming, and remainder continues to use insulating refractories（36）Completion is made in layering firm by ramming；Body of heater（31）Side is provided with
Overflow cinder notch（38）, overflow cinder notch（38）Drawn by furnace bottom side and upward to 1/5 connection cooler bin (4) of body of heater height；
Overflow cinder notch（38）Inside top be provided with temperature measuring equipment（381）.
A kind of 3. according to claim 2, device of liquid blast furnace production ornament materials, it is characterised in that：Three-phase alternating current
Electrode（33）Connect respectively electric furnace low pressure side power supply A B C three-phases, the rotation of fixed-direction is formed after energization in furnace interior
Magnetic field, play a part of simultaneously to electromagnetic agitation in stove in smelting process.
A kind of 4. according to claim 2, device of liquid blast furnace production ornament materials, it is characterised in that：The fire resisting
Electrode（332）For the compound ramming material of magnesium carbonaceous of conduction, resistivity≤3 × 10 after carbonization-4Ω m, bulk density >=
2.8g/cm3, compressive resistance >=20Mpa；Pole piece insulate（35）And insulating refractories（36）For the calcareous compound ramming of magnesium of insulation
Material.
A kind of 5. according to claim 2, device of liquid blast furnace production ornament materials, it is characterised in that：Warm device
（381）The excessive cinder notch of monitoring electric arc furnaces in real time（38）Interior melt cinder temperature, before temperature reaches 1400 DEG C, keep liquid level in arc furnace
Less than excessive cinder notch（38）, and high current is smelted, and after reaching 1400 DEG C ~ 1500 DEG C in temperature, middle slag tank（2）Start
To slag inlet（321）Blast furnace melt cinder is supplemented, high temperature melt cinder is passed through the cinder notch that overflows（38）Overflow；And while blast furnace melt cinder is supplemented
By auxiliary material entrance（322）Auxiliary material is added, by adjusting electric arc furnace smelting electric current, controls the magnitude of recruitment of blast furnace melt cinder and adding for auxiliary material
Add, high temperature melt cinder is endlessly flowed out from excessive cinder notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710468711.5A CN107417072B (en) | 2017-06-20 | 2017-06-20 | Device for producing foam glass by liquid blast furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710468711.5A CN107417072B (en) | 2017-06-20 | 2017-06-20 | Device for producing foam glass by liquid blast furnace slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107417072A true CN107417072A (en) | 2017-12-01 |
| CN107417072B CN107417072B (en) | 2019-12-24 |
Family
ID=60426028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710468711.5A Active CN107417072B (en) | 2017-06-20 | 2017-06-20 | Device for producing foam glass by liquid blast furnace slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107417072B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282862A (en) * | 2019-06-24 | 2019-09-27 | 鞍钢股份有限公司 | A kind of device preparing foam glass and preparation method |
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|---|---|---|---|---|
| RU2123484C1 (en) * | 1996-07-18 | 1998-12-20 | Всероссийский федеральный научно-исследовательский и проектно-конструкторский технологический институт строительной индустрии "ВНИИжелезобетон" | Slag-alkaline cellular concrete |
| CN101941802A (en) * | 2010-09-07 | 2011-01-12 | 重庆大学 | Method for directly utilizing liquid-state blast furnace slag to manufacture glass ceramics |
| CA2678169A1 (en) * | 2009-09-03 | 2011-03-03 | Yongqiang Guo | Method and apparatus for preparing a slag melt in a medium frequency induction furnace for producing slag wool fiber materials |
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| CN104496184A (en) * | 2014-09-03 | 2015-04-08 | 宝钢矿棉科技（宁波）有限公司 | Blast furnace hot slag microcrystalline glass and preparation method thereof |
| CN105417957A (en) * | 2016-01-27 | 2016-03-23 | 华北理工大学 | Preparing method of energy-saving type high blast slag microcrystal glass |
| CN106587634A (en) * | 2016-12-16 | 2017-04-26 | 武汉理工大学 | Marbled glass ceramics directly employing fusion blast furnace slag and preparation method of marbled glass ceramics |
-
2017
- 2017-06-20 CN CN201710468711.5A patent/CN107417072B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2123484C1 (en) * | 1996-07-18 | 1998-12-20 | Всероссийский федеральный научно-исследовательский и проектно-конструкторский технологический институт строительной индустрии "ВНИИжелезобетон" | Slag-alkaline cellular concrete |
| CA2678169A1 (en) * | 2009-09-03 | 2011-03-03 | Yongqiang Guo | Method and apparatus for preparing a slag melt in a medium frequency induction furnace for producing slag wool fiber materials |
| CN101941802A (en) * | 2010-09-07 | 2011-01-12 | 重庆大学 | Method for directly utilizing liquid-state blast furnace slag to manufacture glass ceramics |
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| CN105417957A (en) * | 2016-01-27 | 2016-03-23 | 华北理工大学 | Preparing method of energy-saving type high blast slag microcrystal glass |
| CN106587634A (en) * | 2016-12-16 | 2017-04-26 | 武汉理工大学 | Marbled glass ceramics directly employing fusion blast furnace slag and preparation method of marbled glass ceramics |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282862A (en) * | 2019-06-24 | 2019-09-27 | 鞍钢股份有限公司 | A kind of device preparing foam glass and preparation method |
| CN110282862B (en) * | 2019-06-24 | 2021-09-14 | 鞍钢股份有限公司 | Device and method for preparing foam glass |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107417072B (en) | 2019-12-24 |
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