CN1689999A - Production method of low-hydroxylic quartz tube capable of filtering ultraviolet rays - Google Patents

Production method of low-hydroxylic quartz tube capable of filtering ultraviolet rays Download PDF

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Publication number
CN1689999A
CN1689999A CN 200410014832 CN200410014832A CN1689999A CN 1689999 A CN1689999 A CN 1689999A CN 200410014832 CN200410014832 CN 200410014832 CN 200410014832 A CN200410014832 A CN 200410014832A CN 1689999 A CN1689999 A CN 1689999A
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CN
China
Prior art keywords
quartz tube
production method
hydroxyl
low
filtering
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.)
Pending
Application number
CN 200410014832
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Chinese (zh)
Inventor
李长虹
张庆观
孙传经
林玉军
朱文飞
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DONGHAI COUNTY HAIWANG QUARTZ PRODUCTS Co Ltd
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DONGHAI COUNTY HAIWANG QUARTZ PRODUCTS Co Ltd
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Application filed by DONGHAI COUNTY HAIWANG QUARTZ PRODUCTS Co Ltd filed Critical DONGHAI COUNTY HAIWANG QUARTZ PRODUCTS Co Ltd
Priority to CN 200410014832 priority Critical patent/CN1689999A/en
Publication of CN1689999A publication Critical patent/CN1689999A/en
Pending legal-status Critical Current

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    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/06—Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
    • 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
    • C03C2201/00—Glass compositions
    • C03C2201/06—Doped silica-based glasses
    • C03C2201/20—Doped silica-based glasses containing non-metals other than boron or halide
    • C03C2201/23—Doped silica-based glasses containing non-metals other than boron or halide containing hydroxyl groups

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)
  • Silicon Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The production process of low hydroxyl quartz tube capable of filtering out ultraviolet ray includes the following steps: drawing quartz tube with the material including quartzite with silica content of 99.5-99.99 % and four kinds of oxide of Ti, Ce, Eu and Nd; roasting the quartz tube in high temperature vacuum furnace at 1000-1300 deg.c and 0.0004-0.02 Pa for 3-10 hr, cooling, restoring normal pressure and discharging. The quartz tube has ultraviolet ray filtering rate up to 95 % and hydroxyl radical content as low as 5-10 ppm, and is one new kind of light source material.

Description

A kind of production method of filtering ultraviolet low-hydroxyl quartz tube
Technical field
The present invention relates to a kind of production method of silica tube, the production method of low and the silica tube that can ultraviolet ray filtering of particularly a kind of hydroxy radical content.
Background technology
In the prior art, application number is 00112310.6, publication number is that 1273948 Chinese patent application discloses name and is called " a kind of production method of low-hydroxyl quartz tube ", this method is to draw good silica tube, insert in the airtight heating chamber, carry out high-temperature roasting, it is characterized in that: before high-temperature roasting, make airtight heating chamber internal pressure reach 5 * 10 by outside pump drainage air earlier -1-5 * 10 -4Pascal rises to 950-1250 ℃ gradually with temperature then, keeps constant temperature calcining 3-20 hour, and the pump drainage air makes airtight heating chamber internal gas pressure be stabilized in 5 * 10 continuously simultaneously -1-5 * 10 -4Pascal after high-temperature roasting, through cooling, recovers normal pressure, and the chamber of opening goes out pipe.Its defective is that though the silica tube hydroxy radical content of producing with this method is lower, this kind silica tube does not have the function of ultraviolet ray filtering, easily HUMAN HEALTH is worked the mischief.
Summary of the invention
Technical problem to be solved by this invention is at the deficiencies in the prior art, and a kind of production method with the low filter ultraviolet ray low-hydroxyl quartz tube of ultraviolet ray filtering function and hydroxy radical content is provided.
Technical problem to be solved by this invention is to realize by following technical scheme.The present invention is a kind of production method of filtering ultraviolet low-hydroxyl quartz tube, is characterized in that step is as follows:
(1) gets SiO 2Content is the quartz sand of 99.5%-99.99%, and adds the 1-4 kind oxide compound of the 0.1%-0.3% of its weight therein, and described oxide compound is titanium oxide, cerium oxide, europium sesquioxide and Neodymium trioxide, and is drawn into silica tube as raw material;
(2) above-mentioned silica tube is dropped into the high-temperature vacuum kiln roasting, the interior temperature of stove rises to 1000-1300 degree centigrade gradually during roasting, and furnace pressure reaches 2 * 10 -2-4 * 10 -4Pascal, after constant temperature calcining 3-10 hour, cooling recovers normal pressure, and blow-on goes out pipe, and the ultraviolet low-hydroxyl quartz tube of filter gets product.
Technical problem to be solved by this invention can also further realize by following technical scheme.Above-described a kind of production method of filtering ultraviolet low-hydroxyl quartz tube is characterized in, in step (1), and the SiO of quartz sand 2Content is 99.90%-99.99%, 4 kinds of oxide compounds of 0.2% of its weight of interpolation in the quartz sand, and described oxide compound is titanium oxide, cerium oxide, europium sesquioxide and Neodymium trioxide, respectively accounts for 0.05% of quartz sand weight.
Technical problem to be solved by this invention can also further realize by following technical scheme.Above-described a kind of production method of filtering ultraviolet low-hydroxyl quartz tube is characterized in, in step (2), the interior temperature of stove rises to 1200 degrees centigrade gradually during roasting, and furnace pressure reaches 3 * 10 -3Pascal, constant temperature calcining 4 hours.
Technical problem to be solved by this invention can also further realize by following technical scheme.Above-described a kind of production method of filtering ultraviolet low-hydroxyl quartz tube is characterized in, before blow-on goes out pipe, feeds helium or argon gas or nitrogen in stove.
Compared with prior art, the silica tube of producing with the present invention can ultraviolet ray filtering, and its filtration efficiency can reach more than 95%.And this silica tube hydroxyl is lower, and its hydroxy radical content is 5-10ppm, is a kind of low hydroxyl, high-quality, and the silica tube of high added value is a quartzy industry electric light source novel material newly developed.
Embodiment
Further describe concrete technology implementation scheme of the present invention below.
Embodiment 1.A kind of production method of filtering ultraviolet low-hydroxyl quartz tube, step is as follows:
(1) gets SiO 2Content is 99.99% quartz sand, and adds 4 kinds of oxide compounds of 0.2% of its weight therein: titanium oxide, cerium oxide, europium sesquioxide and Neodymium trioxide, respectively account for 0.05% of quartz sand weight, and be drawn into silica tube as raw material;
(2) above-mentioned silica tube is dropped into the high-temperature vacuum kiln roasting, the interior temperature of stove rises to 1200 degrees centigrade gradually during roasting, and furnace pressure reaches 3 * 10 -3Pascal, constant temperature calcining is after 4 hours, and cooling recovers normal pressure, and blow-on goes out pipe, and the ultraviolet low-hydroxyl quartz tube of filter gets product.But the silica tube ultraviolet ray filtering of gained, its hydroxy radical content is 5ppm after testing.
Embodiment 2.A kind of production method of filtering ultraviolet low-hydroxyl quartz tube, step is as follows:
(1) gets SiO 2Content is 99.98% quartz sand, and adds 3 kinds of oxide compounds of 0.3% of its weight therein: titanium oxide, cerium oxide and europium sesquioxide, account for 0.1% of quartz sand weight respectively, and be drawn into silica tube as raw material;
(2) above-mentioned silica tube is dropped into the high-temperature vacuum kiln roasting, the interior temperature of stove rises to 1150 degrees centigrade gradually during roasting, and furnace pressure reaches 4 * 10 -4Pascal, constant temperature calcining is after 5 hours, and cooling recovers normal pressure, feeds helium and protect in stove, and blow-on goes out pipe again, and the ultraviolet low-hydroxyl quartz tube of filter gets product.But the silica tube ultraviolet ray filtering of gained, its hydroxy radical content is 7ppm after testing.
Embodiment 3.A kind of production method of filtering ultraviolet low-hydroxyl quartz tube, step is as follows:
(1) gets SiO 2Content is 99.95% quartz sand, and adds 0.1% titanium oxide of its weight therein, is drawn into silica tube as raw material;
(2) above-mentioned silica tube is dropped into the high-temperature vacuum kiln roasting, the interior temperature of stove rises to 1250 degrees centigrade gradually during roasting, and furnace pressure reaches 3 * 10 -4Pascal, constant temperature calcining is after 10 hours, and cooling recovers normal pressure, feeds nitrogen and protect in stove, and blow-on goes out pipe again, and the ultraviolet low-hydroxyl quartz tube of filter gets product.But the silica tube ultraviolet ray filtering of gained, its hydroxy radical content is 6ppm after testing.
Embodiment 4.A kind of production method of filtering ultraviolet low-hydroxyl quartz tube, step is as follows:
(1) gets SiO 2Content is 99.90% quartz sand, and adds 0.2% cerium oxide and europium sesquioxide of its weight therein, accounts for 0.15%, 0.05% of quartz sand weight respectively, is drawn into silica tube as raw material;
(2) above-mentioned silica tube is dropped into the high-temperature vacuum kiln roasting, the interior temperature of stove rises to 1150 degrees centigrade gradually during roasting, and furnace pressure reaches 2 * 10 -2Pascal, constant temperature calcining is after 8 hours, and cooling recovers normal pressure, feeds argon gas and protect in stove, and blow-on goes out pipe again, and the ultraviolet low-hydroxyl quartz tube of filter gets product.But the silica tube ultraviolet ray filtering of gained, its hydroxy radical content is 9ppm after testing.
Embodiment 5.A kind of production method of filtering ultraviolet low-hydroxyl quartz tube, step is as follows:
(1) gets SiO 2Content is 99.92% quartz sand, and adds 3 kinds of oxide compounds of 0.25% of its weight therein: cerium oxide, europium sesquioxide and Neodymium trioxide, account for 0.05%, 0.1% and 0.1% of quartz sand weight respectively, and be drawn into silica tube as raw material;
(2) above-mentioned silica tube is dropped into the high-temperature vacuum kiln roasting, the interior temperature of stove rises to 1300 degrees centigrade gradually during roasting, and furnace pressure reaches 3 * 10 -3Pascal, constant temperature calcining is after 4 hours, and cooling recovers normal pressure, and blow-on goes out pipe, and the ultraviolet low-hydroxyl quartz tube of filter gets product.But the silica tube ultraviolet ray filtering of gained, its hydroxy radical content is 5ppm after testing.
Embodiment 6.A kind of production method of filtering ultraviolet low-hydroxyl quartz tube, step is as follows:
(1) gets SiO 2Content is 99.80% quartz sand, and adds 0.1% cerium oxide of its weight therein, is drawn into silica tube as raw material;
(2) above-mentioned silica tube is dropped into the high-temperature vacuum kiln roasting, the interior temperature of stove rises to 1200 degrees centigrade gradually during roasting, and furnace pressure reaches 3 * 10 -3Pascal, constant temperature calcining is after 4 hours, and cooling recovers normal pressure, and blow-on goes out pipe, and the ultraviolet low-hydroxyl quartz tube of filter gets product.But the silica tube ultraviolet ray filtering of gained, its hydroxy radical content is 6ppm after testing.

Claims (4)

1, a kind of production method of filtering ultraviolet low-hydroxyl quartz tube is characterized in that step is as follows:
(1) gets SiO 2Content is the quartz sand of 99.5%-99.99%, and adds the 1-4 kind oxide compound of the 0.1%-0.3% of its weight therein, and described oxide compound is titanium oxide, cerium oxide, europium sesquioxide and Neodymium trioxide, and is drawn into silica tube as raw material;
(2) above-mentioned silica tube is dropped into the high-temperature vacuum kiln roasting, the interior temperature of stove rises to 1000-1300 degree centigrade gradually during roasting, and furnace pressure reaches 2 * 10 -2-4 * 10 -4Pascal, after constant temperature calcining 3-10 hour, cooling recovers normal pressure, and blow-on goes out pipe, and the ultraviolet low-hydroxyl quartz tube of filter gets product.
2, a kind of production method of filtering ultraviolet low-hydroxyl quartz tube according to claim 1 is characterized in that, in step (1), and the SiO of quartz sand 2Content is 99.90%-99.99%, 4 kinds of oxide compounds of 0.2% of its weight of interpolation in the quartz sand, and described oxide compound is titanium oxide, cerium oxide, europium sesquioxide and Neodymium trioxide, respectively accounts for 0.05% of quartz sand weight.
3, a kind of production method of filtering ultraviolet low-hydroxyl quartz tube according to claim 1 is characterized in that, in step (2), the interior temperature of stove rises to 1200 degrees centigrade gradually during roasting, and furnace pressure reaches 3 * 10 -3Pascal, constant temperature calcining 4 hours.
4, a kind of production method of filtering ultraviolet low-hydroxyl quartz tube according to claim 1 is characterized in that, before blow-on goes out pipe, feeds helium or argon gas or nitrogen in stove.
CN 200410014832 2004-04-29 2004-04-29 Production method of low-hydroxylic quartz tube capable of filtering ultraviolet rays Pending CN1689999A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102311219A (en) * 2011-09-29 2012-01-11 连云港华源石英制品有限公司 Production method of low-hydroxylic bactericidal deodorant quartz tube
CN101708950B (en) * 2009-12-02 2012-06-06 单军成 Low-hydroxyl purple quartz tube and production method thereof
CN103771688A (en) * 2014-01-24 2014-05-07 南通惠通纺织器材有限公司 Process for producing environment-friendly quartz tubes
CN103771689A (en) * 2014-01-24 2014-05-07 南通惠通纺织器材有限公司 Preparation method for high-efficiency and energy-saving electric-power-supply low-hydroxyl-content quartz pipe capable of filtering ultraviolet
CN103833216A (en) * 2014-01-24 2014-06-04 南通惠通纺织器材有限公司 Production process of environmental-friendly quartz tube
CN112499945A (en) * 2020-12-26 2021-03-16 连云港福东正佑照明电器有限公司 Production method of low-ultraviolet-transmission high-luminous-efficiency quartz tube

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101708950B (en) * 2009-12-02 2012-06-06 单军成 Low-hydroxyl purple quartz tube and production method thereof
CN102311219A (en) * 2011-09-29 2012-01-11 连云港华源石英制品有限公司 Production method of low-hydroxylic bactericidal deodorant quartz tube
CN103771688A (en) * 2014-01-24 2014-05-07 南通惠通纺织器材有限公司 Process for producing environment-friendly quartz tubes
CN103771689A (en) * 2014-01-24 2014-05-07 南通惠通纺织器材有限公司 Preparation method for high-efficiency and energy-saving electric-power-supply low-hydroxyl-content quartz pipe capable of filtering ultraviolet
CN103833216A (en) * 2014-01-24 2014-06-04 南通惠通纺织器材有限公司 Production process of environmental-friendly quartz tube
CN112499945A (en) * 2020-12-26 2021-03-16 连云港福东正佑照明电器有限公司 Production method of low-ultraviolet-transmission high-luminous-efficiency quartz tube

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