CN113636741A - All-electric glass melting furnace - Google Patents
All-electric glass melting furnace Download PDFInfo
- Publication number
- CN113636741A CN113636741A CN202110962247.1A CN202110962247A CN113636741A CN 113636741 A CN113636741 A CN 113636741A CN 202110962247 A CN202110962247 A CN 202110962247A CN 113636741 A CN113636741 A CN 113636741A
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- Prior art keywords
- melting
- chamber
- melting furnace
- glass
- electric
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Links
- 238000002844 melting Methods 0.000 title claims abstract description 106
- 230000008018 melting Effects 0.000 title claims abstract description 106
- 239000011521 glass Substances 0.000 title claims abstract description 60
- 239000006060 molten glass Substances 0.000 claims abstract description 33
- 230000005587 bubbling Effects 0.000 claims abstract description 20
- 238000007670 refining Methods 0.000 claims abstract description 20
- 238000005352 clarification Methods 0.000 claims abstract description 15
- 238000005485 electric heating Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000011449 brick Substances 0.000 claims description 25
- 239000004927 clay Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 5
- 239000000378 calcium silicate Substances 0.000 claims description 5
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 241000197194 Bulla Species 0.000 claims description 2
- 208000002352 blister Diseases 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/182—Stirring devices; Homogenisation by moving the molten glass along fixed elements, e.g. deflectors, weirs, baffle plates
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/193—Stirring devices; Homogenisation using gas, e.g. bubblers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention provides an all-electric glass melting furnace, which comprises: the melting part comprises a plurality of melting tanks, all the melting tanks are arranged side by side along the direction vertical to the flowing direction of the molten glass, and electric heating equipment is arranged in the melting tanks and used for melting the glass; the refining part comprises a refining chamber, a kiln bank and a first bubbling system are sequentially arranged in the refining chamber along the flow direction of the glass liquid, and the refining chamber is communicated with each melting tank; the working part comprises a working chamber, a second bubbling system, a shallow pool and an overflow port are sequentially arranged in the working chamber along the flow direction of the molten glass, and the working chamber is communicated with the clarifying chamber; the invention can ensure a certain tonnage of the melting furnace and meet the requirement of environmental protection through a plurality of melting tanks provided with electric heating equipment, a clarification chamber provided with a kiln bank and a first bubbling system and a working chamber provided with a second bubbling system and a shallow tank.
Description
Technical Field
The invention relates to the technical field of glass melting furnaces, in particular to an all-electric glass melting furnace.
Background
Because the requirement for environmental protection is higher and higher, the price of petroleum and natural gas is continuously increased, and the comprehensive advantage of melting glass by electricity is more and more obvious. The larger the tonnage of the glass melting furnace is, the unit consumption is lower, the investment per ton of glass is lower, the glass melting furnace not only accords with the national energy policy at the present stage and the policy of establishing a conservation-oriented society, but also can greatly reduce the cost of manufacturers so that the glass melting furnace is in a favorable position in market competition.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to an all-electric glass melting furnace, which not only ensures a certain tonnage of the melting furnace, but also meets the requirement of environmental protection.
In order to solve the above technical problems, the present invention provides an all-electric glass melting furnace, comprising:
the melting part comprises a plurality of melting tanks, all the melting tanks are arranged side by side along the direction vertical to the flowing direction of the molten glass, and electric heating equipment is arranged in the melting tanks and used for melting the glass;
the refining part comprises a refining chamber, a kiln bank and a first bubbling system are sequentially arranged in the refining chamber along the flow direction of the glass liquid, and the refining chamber is communicated with each melting tank;
the working part comprises a working chamber, a second bubbling system, a shallow pool and an overflow port are sequentially arranged in the working chamber along the flow direction of the molten glass, and the working chamber is communicated with the clarifying chamber.
Preferably, all the melting tanks are symmetrically distributed by taking the central line of the refining chamber as a symmetrical line, so that the molten glass can be mixed more uniformly when flowing into the refining chamber from the melting tanks.
Preferably, the bottom of the clarifying chamber and/or the working chamber is formed by combining an insulating layer and a plurality of clay layers stacked on the insulating layer, and the structure can ensure that the kiln bottom can slow down the erosion of high-temperature molten glass brought by the all-electric glass melting kiln.
Preferably, the clay layer is formed by paving clay bricks and first heat-insulating bricks in a staggered mode along the horizontal direction, the clay bricks and the heat-insulating bricks are arranged at intervals, and the heat-insulating performance is improved while the corrosion resistance of the kiln bottom is guaranteed.
Preferably, the heat preservation layer comprises a steel plate, second heat preservation bricks and calcium silicate boards which are paved in a staggered mode in the horizontal direction are stacked on the steel plate, the heat preservation performance of the all-electric glass melting furnace is guaranteed through the second heat preservation bricks and the calcium silicate boards which are arranged at intervals, and the steel plate is used for providing integral support for the all-electric glass melting furnace.
Preferably, the weir is arranged at the bottom of the clarifying chamber in an upward protruding manner, the weir is perpendicular to two side walls of the clarifying chamber, and the weir further improves the clarifying time of molten glass by prolonging the flowing time of the molten glass in the all-electric glass melting furnace, so that the clarifying capacity of the clarifying part is improved.
Preferably, the kiln bank is formed by combining electric melting high-zirconium bricks, and the corrosion resistance of the kiln bank is ensured by adopting the electric melting high-zirconium bricks.
Preferably, a cooling water bag is arranged in the kiln bank and used for cooling the kiln bank, so that the service life of the kiln bank is prolonged.
Preferably, the flow channel of the shallow pool is in a horn shape, the horn-shaped flow channel of the shallow pool improves the backflow effect of the glass liquid, and the crystallization at the corner of the pool wall is reduced.
Preferably, the side wall of the shallow pool is provided with an auxiliary heating system, so that the temperature of the molten glass flowing out of the overflow port is ensured to meet the requirement.
As mentioned above, the all-electric glass melting furnace of the invention has the following beneficial effects: when the all-electric glass melting furnace works, the electric heating equipment in the melting tank melts glass into molten glass, the molten glass flows into the clarifying part from the melting part, enters the working part through the clarification action of the weir and the first bubbling system in the clarifying part, sequentially flows through the second bubbling system and the shallow tank, and flows out from the overflow port; the all-electric glass melting furnace has the following advantages: 1. the melting amount of the glass is greatly increased by arranging a plurality of melting tanks, and meanwhile, when one melting tank is damaged, the glass can be thermally repaired only in a mode of reducing production, so that the service life of the melting furnace is prolonged; 2. the structure of the weir and the first bubbling system adopted by the clarification part meets the clarification requirement of the molten glass and simultaneously enhances the anti-corrosion capability; 3. compared with the traditional melting furnace, the all-electric glass melting furnace reduces the occupied area and the fixed investment, and is more environment-friendly; the full-electric glass melting furnace provided by the invention has the advantages that a plurality of melting tanks with point heating equipment, a clarifying chamber with a furnace bank and a first bubbling system, and a working chamber with a second bubbling system and a shallow tank are arranged, so that a certain tonnage of the melting furnace is ensured, and the requirement of environmental protection is met.
Drawings
FIG. 1 is a schematic view of an all electric glass melting furnace according to the present invention;
FIG. 2 shows a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 shows a cross-sectional view along line B-B of fig. 1.
Description of the element reference numerals
1 melting part
11 melting tank
2 clarification section
21 weir
22 first bubbling system
23 Cooling water bag
24 clarification chamber
3 working part
31 second bubbling system
32 shallow pool
321 corundum pool bottom ramming material
322 capacitor alpha beta brick without shrinkage cavity
33 overflow
34 working chamber
4 pool bottom
41 clay layer
411 clay brick
412 first insulating brick
42 heat insulation layer
421 silicon-calcium plate
422 second insulating brick
423 steel plate
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in FIG. 1, the present invention provides an all-electric glass melting furnace comprising:
the glass melting device comprises a melting part 1, wherein the melting part 1 comprises a plurality of melting tanks 11, all the melting tanks 11 are arranged side by side along the direction vertical to the flowing direction of molten glass, and electric heating equipment is arranged in the melting tanks 11 and is used for melting glass;
the refining part 2 comprises a refining chamber 24, a weir 21 and a first bubbling system 22 are sequentially arranged in the refining chamber 24 along the flow direction of molten glass, and the refining chamber 24 is communicated with each melting tank 11;
the working part 3, the working part 3 includes the studio 34, has set gradually second tympanic bulla system 31, shallow pond 32 and overflow mouth 33 along the glass liquid flow direction in the studio 34, just the studio 34 communicates with the clarification chamber 24.
When the all-electric glass melting furnace of the embodiment works, the electric heating equipment in the melting tank 11 melts glass into molten glass, the molten glass flows into the clarification part 2 from the melting part 1, enters the working part 3 through the clarification action of the weir 21 and the first bubbling system 22 in the clarification part 2, sequentially flows through the second bubbling system 31 and the shallow tank 32, flows out from the overflow port 33, and enters the next working procedure; the all-electric glass melting furnace of the embodiment has the following advantages: 1. the glass melting amount of the invention is greatly enhanced by the plurality of melting tanks 11, and meanwhile, when one melting tank 11 is damaged, the glass can be thermally repaired only in a mode of reducing production, so that the service life of the melting furnace is prolonged; 2. the structure of the weir 21 and the first bubbling system 22 adopted by the clarification part 2 meets the clarification requirement of the molten glass and simultaneously enhances the anti-corrosion capability; 3. compared with the traditional melting furnace, the all-electric glass melting furnace reduces the occupied area and the fixed investment, and is more environment-friendly.
As shown in fig. 1, in this embodiment, the number of the melting tanks 11 is two, and the two melting tanks 11 are symmetrically distributed with respect to the center line of the fining chamber 24 as a symmetrical line, so that when the molten glass flows from the melting tanks 11 into the fining chamber 24, the molten glass can be more uniformly mixed, and when one of the melting tanks 11 is damaged, the other one of the melting tanks is kept working normally, and the service life of the melting furnace can be prolonged only by performing online heat repair in a production reduction manner.
As shown in fig. 2 and 3, in the present embodiment, the bottom 4 of the fining chamber 24 and/or the working chamber 34 is formed by combining the insulating layer 42 and the multiple clay layers 41 stacked on the insulating layer 42, and this structure ensures that the bottom of the furnace can reduce the erosion of the molten glass of the high-temperature melting brought about by the all-electric glass melting furnace; further, the clay layer 41 is formed by paving clay bricks 411 and first insulating bricks 412 in a staggered mode along the horizontal direction, the clay bricks 411 and the insulating bricks are arranged at intervals, the corrosion resistance of the kiln bottom is guaranteed, and the insulating performance is improved.
Further, in the present embodiment, as shown in fig. 2 and 3, the insulating layer 42 includes a steel plate 423, the steel plate 423 is stacked with second insulating bricks 422 and calcium silicate boards 421 alternately laid in the horizontal direction, the second insulating bricks 422 and the calcium silicate boards 421 arranged at intervals ensure the insulating performance of the all-electric glass melting furnace, and the steel plate 423 is used for providing an integral support for the all-electric glass melting furnace.
Further, in the present embodiment, as shown in fig. 2, the weir 21 is disposed at the bottom 4 of the fining chamber 24 in an upward protruding manner, and the weir 21 is perpendicular to two side walls of the fining chamber 24, when the molten glass flows in the fining chamber 24, the molten glass is blocked by the weir 21, the flow of the molten glass at the lower portion of the weir 21 is blocked, a portion of the molten glass flows back, a portion of the molten glass flows to the rear portion after rising over the weir 21, and the returned molten glass is greatly increased, so that the flow path of the molten glass is lengthened, and thus the flow time is also lengthened, and the weir 21 further improves the fining time of the molten glass by prolonging the flow time of the molten glass in the all-electric glass melting furnace, and thus improves the fining capability of the fining portion 2; further, in the present embodiment, the weir 21 is formed by combining the electric melting high zirconium bricks, and the corrosion resistance of the weir 21 is ensured by using the electric melting high zirconium bricks; still further, as shown in fig. 2, in the present embodiment, a cooling water bag 23 is disposed in the weir 21, and the cooling water bag 23 is used for cooling the weir 21, so as to prolong the service life of the weir 21.
In this embodiment, as shown in fig. 1, the flow channel of the shallow pool 32 is in a trumpet shape, and the flow channel of the trumpet-shaped shallow pool 32 improves the backflow effect of the glass liquid and reduces crystallization at the corner of the pool wall; further, in the present embodiment, an auxiliary heating system is disposed on the side wall of the shallow pool 32, so as to ensure that the temperature of the molten glass flowing out from the overflow port 33 meets the requirement; still further, as shown in fig. 3, in the present embodiment, the side wall of the shallow pool 32 is formed by stacking a corundum pool bottom ramming material 321 and two layers of capacitance shrinkage-hole-free α β bricks 322 disposed on the corundum pool bottom ramming material 321, and by this design, bubbles of the molten glass flowing out of the overflow port 33 can be effectively reduced, and the quality of the molten glass is improved.
In conclusion, the all-electric glass melting furnace of the invention ensures a certain tonnage of the melting furnace and meets the requirement of environmental protection through the plurality of melting tanks 11 provided with the electric heating equipment, the clarifying chamber 24 provided with the weir 21 and the first bubbling system 22, and the working chamber 34 provided with the second bubbling system 31 and the shallow tank 32. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. An all-electric glass melting furnace, comprising:
the glass melting device comprises a melting part (1), wherein the melting part (1) comprises a plurality of melting tanks (11), all the melting tanks (11) are arranged side by side along the direction vertical to the flowing direction of glass liquid, and electric heating equipment is arranged in the melting tanks (11) and is used for melting glass;
the refining device comprises a refining part (2), wherein the refining part (2) comprises a refining chamber (24), a weir (21) and a first bubbling system (22) are sequentially arranged in the refining chamber (24) along the flow direction of molten glass, and the refining chamber (24) is communicated with each melting tank (11);
the working part (3), the working part (3) includes studio (34), has set gradually second tympanic bulla system (31), shallow pond (32) and overflow mouth (33) along the glass liquid flow direction in studio (34), just studio (34) and clarification chamber (24) intercommunication.
2. The all-electric glass melting furnace according to claim 1, characterized in that: all the melting tanks (11) are symmetrically distributed by taking the central line of the clarifying chamber (24) as a symmetrical line.
3. The all-electric glass melting furnace according to claim 1, characterized in that: the bottom (4) of the clarifying chamber (24) and/or the working chamber (34) is formed by combining an insulating layer (42) and a plurality of clay layers (41) stacked on the insulating layer (42).
4. The all-electric glass melting furnace according to claim 3, characterized in that: the clay layer (41) is formed by paving clay bricks (411) and first insulating bricks (412) in a staggered mode along the horizontal direction.
5. The all-electric glass melting furnace according to claim 3, characterized in that: the heat-insulating layer (42) comprises a steel plate (423), and second heat-insulating bricks (422) and calcium silicate plates (421) which are paved in a staggered mode in the horizontal direction are stacked on the steel plate (423).
6. The all-electric glass melting furnace according to claim 1, characterized in that: the kiln bank (21) is upwards and convexly arranged at the bottom (4) of the clarification chamber (24), and the kiln bank (21) is vertical to two side walls of the clarification chamber (24).
7. The all-electric glass melting furnace according to claim 1, characterized in that: the kiln bank (21) is formed by combining electric melting high-zirconium bricks.
8. The all-electric glass melting furnace according to claim 1, characterized in that: and a cooling water bag (23) is arranged in the kiln bank (21).
9. The all-electric glass melting furnace according to claim 1, characterized in that: the flow channel of the shallow pool (32) is in a horn shape.
10. The all-electric glass melting furnace according to claim 1, characterized in that: and an auxiliary heating system is arranged on the side wall of the shallow pool (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110962247.1A CN113636741A (en) | 2021-08-20 | 2021-08-20 | All-electric glass melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110962247.1A CN113636741A (en) | 2021-08-20 | 2021-08-20 | All-electric glass melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113636741A true CN113636741A (en) | 2021-11-12 |
Family
ID=78423164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110962247.1A Pending CN113636741A (en) | 2021-08-20 | 2021-08-20 | All-electric glass melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113636741A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114409227A (en) * | 2021-12-23 | 2022-04-29 | 中国建材国际工程集团有限公司 | Melting furnace for completely replacing glass with fossil fuel |
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|---|---|---|---|---|
| WO2012091133A1 (en) * | 2010-12-28 | 2012-07-05 | 旭硝子株式会社 | Clarification tank, glass melting furnace, molten glass production method, glassware production method and glassware production device |
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| CN107473567A (en) * | 2017-08-17 | 2017-12-15 | 漳州旗滨玻璃有限公司 | Accelerate the process of body-tinted glass colour fading process |
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| CN111470756A (en) * | 2020-05-25 | 2020-07-31 | 中建材蚌埠玻璃工业设计研究院有限公司 | Independent melting wide-body melting furnace for electronic display glass production |
-
2021
- 2021-08-20 CN CN202110962247.1A patent/CN113636741A/en active Pending
Patent Citations (5)
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| WO2012091133A1 (en) * | 2010-12-28 | 2012-07-05 | 旭硝子株式会社 | Clarification tank, glass melting furnace, molten glass production method, glassware production method and glassware production device |
| CN105776819A (en) * | 2016-04-27 | 2016-07-20 | 巨石集团有限公司 | Glass tank furnace with high melting rate |
| CN107473567A (en) * | 2017-08-17 | 2017-12-15 | 漳州旗滨玻璃有限公司 | Accelerate the process of body-tinted glass colour fading process |
| CN208362171U (en) * | 2018-04-24 | 2019-01-11 | 南宁粤玻实业有限公司 | A kind of energy saving kiln |
| CN111470756A (en) * | 2020-05-25 | 2020-07-31 | 中建材蚌埠玻璃工业设计研究院有限公司 | Independent melting wide-body melting furnace for electronic display glass production |
Non-Patent Citations (1)
| Title |
|---|
| 田英良: "《新编玻璃工艺学》", 30 June 2009, 中国轻工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114409227A (en) * | 2021-12-23 | 2022-04-29 | 中国建材国际工程集团有限公司 | Melting furnace for completely replacing glass with fossil fuel |
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Application publication date: 20211112 |
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