CN102603165A - Method for producing quartz crucible by waste high silica glass fiber - Google Patents
Method for producing quartz crucible by waste high silica glass fiber Download PDFInfo
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- CN102603165A CN102603165A CN2012100537807A CN201210053780A CN102603165A CN 102603165 A CN102603165 A CN 102603165A CN 2012100537807 A CN2012100537807 A CN 2012100537807A CN 201210053780 A CN201210053780 A CN 201210053780A CN 102603165 A CN102603165 A CN 102603165A
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- slip
- quartz crucible
- moulding
- gypsum
- glass fibre
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
- C03B19/066—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction for the production of quartz or fused silica articles
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Glass Compositions (AREA)
Abstract
The invention relates to a method for producing a quartz crucible by waste high silica glass fiber. In the method, the waste high silica glass fiber is taken as main raw material and a slip casting technology is adopted to prepare a quartz crucible green body, and the quartz crucible can be obtained by sintering. The preparation technology is simple and easy as well as low in cost; and the prepared quartz crucible has the heat-resistant temperature of higher than 1400 DEG C and good thermal shock stability. The solid waste is adopted as the raw material, so that the raw material is low in price and rich in source. The method is simple in preparation technology and convenient for industrialized mass production; and the prepared quartz crucible can be widely applied to various fields of glass smelting, glass deep processing, metallurgical industry, electronic industry, chemical industry, aerospace and the like. By using the method, the production cost of quartz glass can be effectively reduced, the environment is protected and waste is turned into wealth, thus the method has obvious economic benefit and environmental protection benefit.
Description
Technical field
The present invention relates to a kind of preparation method of quartz crucible, particularly a kind of method of utilizing discarded high silica glass production quartz crucible.
Background technology
Discarded resurrection glass fibre is some resurrection glass fibres that can't be used for melting down again production in the production process, and a kind of solid waste of resurrection glass fibre goods discarded back discharging.Because SiO in the resurrection glass fibre component
2Content is more than 96%; It is a kind of resistant to elevated temperatures inorganic fibre; The life-time service temperature is more than 900 ℃; Have performances such as good heatproof, corrosion resistant, insulation, dielectric, the solar heat protection that has been widely used in high-temperature insulation material, fire prevention protective material, high-temperature gas and liquid filtration material and aerospacecraft resists ablation and electromagnetic wave transparent material etc.At present, also do not have scientific and reasonable method, mostly its landfill and the method for paving the way are handled about abundant recovery and the discarded resurrection glass fibre of utilization.Domestic according to statistics glass is produced 4000000 square metres of high silica glass fiber mesh cloths per year; The annual discarded resurrection glass fibre that produces because of the resurrection glass fibre product rejection reaches 3,000,000 square metres; If the annual discarded resurrection glass fibre that produces is dealt with improperly, will cause very big pollution to environment.Both contaminate environment was wasted resource again.
Summary of the invention
The object of the present invention is to provide a kind of production cost that can effectively reduce quartz crucible; The protection environment; The method that the discarded high silica glass of the utilization of turning waste into wealth is produced quartz crucible; The quartz crucible heatproof that obtains by working method of the present invention is higher than 1400 ℃, and water-intake rate is little, and thermal shock resistance is good.
For achieving the above object, the technical scheme that the present invention adopts is:
The first step: slip preparation
At first, will discard resurrection glass fibre and from discontinued product, sort out, remove wherein plastics and metal object, cut into length less than the short silk of 2 millimeters discarded resurrection glass fibre;
Then; Press massfraction with the discarded resurrection glass fibre weak point silk of 95～97% length less than 2 millimeters, 0.1～1% lime carbonate, 2～4% kaolin and 0.3～1% lactic acid are put into ball grinder; According to 45ml zero(ppm) water/100 gram admixtiones, in ball grinder, add zero(ppm) water more then;
At last, slip is poured out from ball grinder after putting into the zirconium white ballstone ball milling 36h with weight such as admixtion again, and through 100 mesh standard sieves, both slip was used in moulding;
Second step: injection forming and repaired biscuit
The moulding that has prepared is slowly poured in the gypsum mold with slip, and constantly shake gypsum mold, when the moulding of treating gypsum inwall absorption uses slurry thickness to be 5～12mm, rapidly unnecessary moulding in the gypsum mold is poured out with slip; When the moulding in the gypsum mold breaks away from slip and gypsum inwall, carry out the demoulding rapidly, and the base substrate of the demoulding dried naturally in air both repair behind the base must the quartz crucible base substrate;
The 3rd step: crucible burns till
At first, air dried crucible base substrate is put into stove, burn till according to following temperature schedule: with heat-up rate is 1～2 ℃/min, is warming up to 300 ℃ from room temperature, and is incubated 4～8h; Then, be 3 ℃/min with heat-up rate, be warming up to 1300 ℃ from 300 ℃, behind insulation 10～12h, furnace cooling both quartz crucible.
The present invention is a main raw material with discarded resurrection glass fibre, has adopted slip-casting shaping process to prepare quartz crucible, and preparation is simple, with low cost, and prepared quartz crucible heat resisting temperature is higher than 1400 ℃, and thermal shock resistance is good.And raw material adopts solid discarded; Cheap, the source is abundant, and preparation technology is simple for this method; Be convenient to commercial scale prodn, prepared quartz crucible can be widely used in fields such as various glass smeltings, glass deep processing, metallurgical industry, electronic industry, chemical engineering industry, aerospace.The present invention can reduce the production cost of silica glass effectively, and the protection environment is turned waste into wealth, and has tangible economic benefit and environmental benefit.
Embodiment
Embodiment 1,
The first step: slip preparation
At first, will discard resurrection glass fibre and from discontinued product, sort out, remove wherein plastics and metal object, cut into length less than the short silk of 2 millimeters discarded resurrection glass fibre;
Then, press massfraction with the discarded resurrection glass fibre weak point silk of 95% length less than 2 millimeters, 1% lime carbonate, 3% kaolin and 1% lactic acid are put into ball grinder, according to 45ml zero(ppm) water/100 gram admixtiones, in ball grinder, add zero(ppm) water more then;
At last, slip is poured out from ball grinder after putting into the zirconium white ballstone ball milling 36h with weight such as admixtion again, and through 100 mesh standard sieves, both slip was used in moulding;
Second step: injection forming and repaired biscuit
The moulding that has prepared is slowly poured in the gypsum mold with slip, and constantly shake gypsum mold, when slurry thickness is used in the moulding of treating gypsum inwall absorption as 6mm, rapidly unnecessary moulding in the gypsum mold is poured out with slip; When the moulding in the gypsum mold breaks away from slip and gypsum inwall, carry out the demoulding rapidly, and the base substrate of the demoulding dried naturally in air both repair behind the base must the quartz crucible base substrate;
The 3rd step: crucible burns till
At first, air dried crucible base substrate is put into stove, burn till according to following temperature schedule: with heat-up rate is 1 ℃/min, is warming up to 300 ℃ from room temperature, and insulation 6h; Then, be 3 ℃/min with heat-up rate, be warming up to 1300 ℃ from 300 ℃, behind the insulation 10h, furnace cooling both quartz crucible.
Embodiment 2,
The first step: slip preparation
At first, will discard resurrection glass fibre and from discontinued product, sort out, remove wherein plastics and metal object, cut into length less than the short silk of 2 millimeters discarded resurrection glass fibre;
Then; Press massfraction with the discarded resurrection glass fibre weak point silk of 96.5% length less than 2 millimeters, 0.3% lime carbonate, 2.7% kaolin and 0.5% lactic acid are put into ball grinder; According to 45ml zero(ppm) water/100 gram admixtiones, in ball grinder, add zero(ppm) water more then;
At last, slip is poured out from ball grinder after putting into the zirconium white ballstone ball milling 36h with weight such as admixtion again, and through 100 mesh standard sieves, both slip was used in moulding;
Second step: injection forming and repaired biscuit
The moulding that has prepared is slowly poured in the gypsum mold with slip, and constantly shake gypsum mold, when slurry thickness is used in the moulding of treating gypsum inwall absorption as 12mm, rapidly unnecessary moulding in the gypsum mold is poured out with slip; When the moulding in the gypsum mold breaks away from slip and gypsum inwall, carry out the demoulding rapidly, and the base substrate of the demoulding dried naturally in air both repair behind the base must the quartz crucible base substrate;
The 3rd step: crucible burns till
At first, air dried crucible base substrate is put into stove, burn till according to following temperature schedule: with heat-up rate is 2 ℃/min, is warming up to 300 ℃ from room temperature, and insulation 8h; Then, be 3 ℃/min with heat-up rate, be warming up to 1300 ℃ from 300 ℃, behind the insulation 12h, furnace cooling both quartz crucible.
Embodiment 3,
The first step: slip preparation
At first, will discard resurrection glass fibre and from discontinued product, sort out, remove wherein plastics and metal object, cut into length less than the short silk of 2 millimeters discarded resurrection glass fibre;
Then; Press massfraction with the discarded resurrection glass fibre weak point silk of 96% length less than 2 millimeters, 0.1% lime carbonate, 3.5% kaolin and 0.4% lactic acid are put into ball grinder; According to 45ml zero(ppm) water/100 gram admixtiones, in ball grinder, add zero(ppm) water more then;
At last, slip is poured out from ball grinder after putting into the zirconium white ballstone ball milling 36h with weight such as admixtion again, and through 100 mesh standard sieves, both slip was used in moulding;
Second step: injection forming and repaired biscuit
The moulding that has prepared is slowly poured in the gypsum mold with slip, and constantly shake gypsum mold, when slurry thickness is used in the moulding of treating gypsum inwall absorption as 10mm, rapidly unnecessary moulding in the gypsum mold is poured out with slip; When the moulding in the gypsum mold breaks away from slip and gypsum inwall, carry out the demoulding rapidly, and the base substrate of the demoulding dried naturally in air both repair behind the base must the quartz crucible base substrate;
The 3rd step: crucible burns till
At first, air dried crucible base substrate is put into stove, burn till according to following temperature schedule: with heat-up rate is 1.5 ℃/min, is warming up to 300 ℃ from room temperature, and insulation 5h; Then, be 3 ℃/min with heat-up rate, be warming up to 1300 ℃ from 300 ℃, behind the insulation 11h, furnace cooling both quartz crucible.
Embodiment 4,
The first step: slip preparation
At first, will discard resurrection glass fibre and from discontinued product, sort out, remove wherein plastics and metal object, cut into length less than the short silk of 2 millimeters discarded resurrection glass fibre;
Then, press massfraction with the discarded resurrection glass fibre weak point silk of 96% length less than 2 millimeters, 0.8% lime carbonate, 2.2% kaolin and 1% lactic acid are put into ball grinder, according to 45ml zero(ppm) water/100 gram admixtiones, in ball grinder, add zero(ppm) water more then;
At last, slip is poured out from ball grinder after putting into the zirconium white ballstone ball milling 36h with weight such as admixtion again, and through 100 mesh standard sieves, both slip was used in moulding;
Second step: injection forming and repaired biscuit
The moulding that has prepared is slowly poured in the gypsum mold with slip, and constantly shake gypsum mold, when slurry thickness is used in the moulding of treating gypsum inwall absorption as 9mm, rapidly unnecessary moulding in the gypsum mold is poured out with slip; When the moulding in the gypsum mold breaks away from slip and gypsum inwall, carry out the demoulding rapidly, and the base substrate of the demoulding dried naturally in air both repair behind the base must the quartz crucible base substrate;
The 3rd step: crucible burns till
At first, air dried crucible base substrate is put into stove, burn till according to following temperature schedule: with heat-up rate is 1.3 ℃/min, is warming up to 300 ℃ from room temperature, and insulation 4h; Then, be 3 ℃/min with heat-up rate, be warming up to 1300 ℃ from 300 ℃, behind the insulation 11h, furnace cooling both quartz crucible.
Embodiment 5,
The first step: slip preparation
At first, will discard resurrection glass fibre and from discontinued product, sort out, remove wherein plastics and metal object, cut into length less than the short silk of 2 millimeters discarded resurrection glass fibre;
Then, press massfraction with the discarded resurrection glass fibre weak point silk of 97% length less than 2 millimeters, 0.7% lime carbonate, 2% kaolin and 0.3% lactic acid are put into ball grinder, according to 45ml zero(ppm) water/100 gram admixtiones, in ball grinder, add zero(ppm) water more then;
At last, slip is poured out from ball grinder after putting into the zirconium white ballstone ball milling 36h with weight such as admixtion again, and through 100 mesh standard sieves, both slip was used in moulding;
Second step: injection forming and repaired biscuit
The moulding that has prepared is slowly poured in the gypsum mold with slip, and constantly shake gypsum mold, when slurry thickness is used in the moulding of treating gypsum inwall absorption as 5mm, rapidly unnecessary moulding in the gypsum mold is poured out with slip; When the moulding in the gypsum mold breaks away from slip and gypsum inwall, carry out the demoulding rapidly, and the base substrate of the demoulding dried naturally in air both repair behind the base must the quartz crucible base substrate;
The 3rd step: crucible burns till
At first, air dried crucible base substrate is put into stove, burn till according to following temperature schedule: with heat-up rate is 1.8 ℃/min, is warming up to 300 ℃ from room temperature, and insulation 7h; Then, be 3 ℃/min with heat-up rate, be warming up to 1300 ℃ from 300 ℃, behind the insulation 10h, furnace cooling both quartz crucible.
Embodiment 6,
The first step: slip preparation
At first, will discard resurrection glass fibre and from discontinued product, sort out, remove wherein plastics and metal object, cut into length less than the short silk of 2 millimeters discarded resurrection glass fibre;
Then, press massfraction with the discarded resurrection glass fibre weak point silk of 95% length less than 2 millimeters, 0.5% lime carbonate, 4% kaolin and 0.5% lactic acid are put into ball grinder, according to 45ml zero(ppm) water/100 gram admixtiones, in ball grinder, add zero(ppm) water more then;
At last, slip is poured out from ball grinder after putting into the zirconium white ballstone ball milling 36h with weight such as admixtion again, and through 100 mesh standard sieves, both slip was used in moulding;
Second step: injection forming and repaired biscuit
The moulding that has prepared is slowly poured in the gypsum mold with slip, and constantly shake gypsum mold, when slurry thickness is used in the moulding of treating gypsum inwall absorption as 8mm, rapidly unnecessary moulding in the gypsum mold is poured out with slip; When the moulding in the gypsum mold breaks away from slip and gypsum inwall, carry out the demoulding rapidly, and the base substrate of the demoulding dried naturally in air both repair behind the base must the quartz crucible base substrate;
The 3rd step: crucible burns till
At first, air dried crucible base substrate is put into stove, burn till according to following temperature schedule: with heat-up rate is 2 ℃/min, is warming up to 300 ℃ from room temperature, and insulation 8h; Then, be 3 ℃/min with heat-up rate, be warming up to 1300 ℃ from 300 ℃, behind the insulation 12h, furnace cooling both quartz crucible.
The present invention is a main raw material with discarded resurrection glass fibre, has adopted slip-casting shaping process to prepare quartz crucible, and preparation is simple, with low cost, and prepared quartz crucible heat resisting temperature is higher than 1400 ℃, and thermal shock resistance is good.And raw material adopts solid discarded; Cheap, the source is abundant, and preparation technology is simple for this method; Be convenient to commercial scale prodn, prepared quartz crucible can be widely used in fields such as various system glass are founded, glass deep processing, metallurgical industry, electronic industry, chemical engineering industry, aerospace.The present invention can reduce the production cost of silica glass effectively, and the protection environment is turned waste into wealth, and has tangible economic benefit and environmental benefit.
Claims (1)
1. utilize discarded high silica glass to produce the method for quartz crucible, it is characterized in that:
The first step: slip preparation
At first, will discard resurrection glass fibre and from discontinued product, sort out, remove wherein plastics and metal object, cut into length less than the short silk of 2 millimeters discarded resurrection glass fibre;
Then; Press massfraction with the discarded resurrection glass fibre weak point silk of 95～97% length less than 2 millimeters, 0.1～1% lime carbonate, 2～4% kaolin and 0.3～1% lactic acid are put into ball grinder; According to 45ml zero(ppm) water/100 gram admixtiones, in ball grinder, add zero(ppm) water more then;
At last, slip is poured out from ball grinder after putting into the zirconium white ballstone ball milling 36h with weight such as admixtion again, and through 100 mesh standard sieves, both slip was used in moulding;
Second step: injection forming and repaired biscuit
The moulding that has prepared is slowly poured in the gypsum mold with slip, and constantly shake gypsum mold, when the moulding of treating gypsum inwall absorption uses slurry thickness to be 5～12mm, rapidly unnecessary moulding in the gypsum mold is poured out with slip; When the moulding in the gypsum mold breaks away from slip and gypsum inwall, carry out the demoulding rapidly, and the base substrate of the demoulding dried naturally in air both repair behind the base must the quartz crucible base substrate;
The 3rd step: crucible burns till
At first, air dried crucible base substrate is put into stove, burn till according to following temperature schedule: with heat-up rate is 1～2 ℃/min, is warming up to 300 ℃ from room temperature, and is incubated 4～8h; Then, be 3 ℃/min with heat-up rate, be warming up to 1300 ℃ from 300 ℃, behind insulation 10～12h, furnace cooling both quartz crucible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210053780.7A CN102603165B (en) | 2012-03-02 | 2012-03-02 | Method for producing quartz crucible by waste high silica glass fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210053780.7A CN102603165B (en) | 2012-03-02 | 2012-03-02 | Method for producing quartz crucible by waste high silica glass fiber |
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| CN102603165A true CN102603165A (en) | 2012-07-25 |
| CN102603165B CN102603165B (en) | 2014-06-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073884A (en) * | 2014-07-08 | 2014-10-01 | 苏州普京真空技术有限公司 | Composite quartz ceramic crucible |
| CN104860686A (en) * | 2015-04-14 | 2015-08-26 | 上海大学 | Method for preparing magnesia-stabilized zirconia crucible through casting molding |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000007487A (en) * | 1998-06-18 | 2000-01-11 | Mitsubishi Material Quartz Kk | Composite crucible, its producing method and regenerating method |
| CN101955319A (en) * | 2010-08-26 | 2011-01-26 | 陕西科技大学 | Method for preparing foamed glass by using waste fiberglass products |
-
2012
- 2012-03-02 CN CN201210053780.7A patent/CN102603165B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000007487A (en) * | 1998-06-18 | 2000-01-11 | Mitsubishi Material Quartz Kk | Composite crucible, its producing method and regenerating method |
| CN101955319A (en) * | 2010-08-26 | 2011-01-26 | 陕西科技大学 | Method for preparing foamed glass by using waste fiberglass products |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073884A (en) * | 2014-07-08 | 2014-10-01 | 苏州普京真空技术有限公司 | Composite quartz ceramic crucible |
| CN104860686A (en) * | 2015-04-14 | 2015-08-26 | 上海大学 | Method for preparing magnesia-stabilized zirconia crucible through casting molding |
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| Publication number | Publication date |
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| CN102603165B (en) | 2014-06-04 |
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