CA2039886A1 - Melting glass with oxidation control and lowered emissions - Google Patents

Melting glass with oxidation control and lowered emissions

Info

Publication number
CA2039886A1
CA2039886A1 CA2039886A CA2039886A CA2039886A1 CA 2039886 A1 CA2039886 A1 CA 2039886A1 CA 2039886 A CA2039886 A CA 2039886A CA 2039886 A CA2039886 A CA 2039886A CA 2039886 A1 CA2039886 A1 CA 2039886A1
Authority
CA
Canada
Prior art keywords
glass
redox
fining agent
conditions
melting glass
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
Application number
CA2039886A
Other languages
French (fr)
Other versions
CA2039886C (en
Inventor
Leonard A. Knavish
William C. Harrell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PPG Industries Ohio Inc
Original Assignee
PPG Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PPG Industries Inc filed Critical PPG Industries Inc
Publication of CA2039886A1 publication Critical patent/CA2039886A1/en
Application granted granted Critical
Publication of CA2039886C publication Critical patent/CA2039886C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/225—Refining
    • 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
    • C03B5/173—Apparatus for changing the composition of the molten glass in glass furnaces, e.g. for colouring the molten glass
    • 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
    • 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
    • C03C1/004—Refining agents

Abstract

Premature dissociation of fining agent is avoided in a glass melting operation while controlling the final redox state of the product glass by initiating the melting process under relatively oxidizing conditions and subsequently altering the redox conditions to make the glass more reducing. A glass that is more reduced than usual can thereby be produced without sacrificing the ability to adequately fine the glass. For a given redox level, less fining agent need be used, thereby lowering emissions from the melting operation, because dissociation of the fining agent is delayed until a later stage of the process where the redox conditions are changed.
CA002039886A 1990-06-25 1991-04-05 Melting glass with oxidation control and lowered emissions Expired - Fee Related CA2039886C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/543,006 US5006144A (en) 1990-06-25 1990-06-25 Melting glass with oxidation control and lowered emissions
US543,006 1990-06-25

Publications (2)

Publication Number Publication Date
CA2039886A1 true CA2039886A1 (en) 1991-12-26
CA2039886C CA2039886C (en) 1995-03-21

Family

ID=24166202

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002039886A Expired - Fee Related CA2039886C (en) 1990-06-25 1991-04-05 Melting glass with oxidation control and lowered emissions

Country Status (11)

Country Link
US (1) US5006144A (en)
EP (1) EP0464501B1 (en)
JP (1) JPH06102552B2 (en)
KR (1) KR930006315B1 (en)
BR (1) BR9102428A (en)
CA (1) CA2039886C (en)
DE (1) DE69112510T2 (en)
DK (1) DK0464501T3 (en)
ES (1) ES2078998T3 (en)
MX (1) MX172417B (en)
ZA (1) ZA911909B (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207059C1 (en) * 1992-03-06 1993-10-21 Schott Glaswerke Process for the purification of oxidic melts
US5401287A (en) * 1993-08-19 1995-03-28 Ppg Industries, Inc. Reduction of nickel sulfide stones in a glass melting operation
DE19710351C1 (en) * 1997-03-13 1998-05-20 Sorg Gmbh & Co Kg Production of glasses with high melting point and volatile components
US5961686A (en) 1997-08-25 1999-10-05 Guardian Fiberglass, Inc. Side-discharge melter for use in the manufacture of fiberglass
ATE292607T1 (en) 1997-10-20 2005-04-15 Ppg Ind Ohio Inc INFRARED AND ULTRAVIOLET RADIATION ABSORBING BLUE GLASS COMPOSITION
EP0915062A1 (en) * 1997-10-23 1999-05-12 Pichanon Dipl.-Ing Suwannathada Method for regulating the redoxcondition, the colour and workability from glassmelts
DE19939771B4 (en) * 1999-08-21 2004-04-15 Schott Glas Process for refining glass melts
DE10042771B4 (en) * 2000-08-31 2004-02-12 Schott Glas Process for controlling and setting the redox state of redox refining agents in a glass melt
US6672108B2 (en) * 2001-04-26 2004-01-06 Guardian Industries Corp. Method of making glass with reduced Se burnoff
US6722161B2 (en) 2001-05-03 2004-04-20 The Boc Group, Inc. Rapid glass melting or premelting
WO2003104157A1 (en) * 2002-06-10 2003-12-18 旭硝子株式会社 Glass and method for production of glass
US20050096209A1 (en) * 2002-06-10 2005-05-05 Asahi Glass Company, Limited Glass and method for producing glass
US6962887B2 (en) * 2003-05-14 2005-11-08 Ppg Industries Ohio, Inc. Transparent glass having blue edge color
US20060070405A1 (en) * 2004-10-06 2006-04-06 Anheuser-Busch, Inc. Method for the production of amber glass with reduced sulfur-containing emissions
DE102007008299B4 (en) * 2006-08-12 2012-06-14 Schott Ag Process for the preparation of glasses, whereby the chemical reduction of constituents is avoided
KR101433213B1 (en) * 2006-10-27 2014-08-22 유로케라 에스.엔.씨. Method for refining a lithium alumino-silicate glass and glass ceramic thus obtained
JP5195753B2 (en) * 2007-07-02 2013-05-15 旭硝子株式会社 Glass melting kiln and glass product manufacturing method
US8304358B2 (en) * 2008-11-21 2012-11-06 Ppg Industries Ohio, Inc. Method of reducing redox ratio of molten glass and the glass made thereby
KR101419140B1 (en) * 2009-06-12 2014-07-16 에어 프로덕츠 앤드 케미칼스, 인코오포레이티드 Furnace and process for controlling the oxidative state of molten materials
US20110011134A1 (en) * 2009-07-15 2011-01-20 Richardson Andrew P Injector for hydrogen and oxygen bubbling in glass baths
JP5674156B2 (en) 2009-11-20 2015-02-25 旭硝子株式会社 Glass melting furnace, molten glass manufacturing method, glass product manufacturing apparatus, and glass product manufacturing method
US20130072371A1 (en) 2011-03-17 2013-03-21 Ppg Industries Ohio, Inc. Method of, and apparatus for, using a glass fluxing agent to reduce foam during melting of glass batch
RU2580857C1 (en) 2012-02-24 2016-04-10 Ппг Индастриз Огайо, Инк. Lithium-containing glass with high content of oxidative iron and method for production thereof
US10202302B2 (en) 2012-02-24 2019-02-12 Ppg Industries Ohio, Inc. Lithium containing glass with high and low oxidized iron content, and products using same
US9016090B2 (en) * 2013-06-12 2015-04-28 Hamid Hojaji Glass microspheres comprising sulfide, and methods of producing glass microspheres
US10196296B2 (en) 2015-01-17 2019-02-05 Hamid Hojaji Fluid permeable and vacuumed insulating microspheres and methods of producing the same
CN106045276B (en) * 2016-05-25 2019-05-28 信义节能玻璃（四川）有限公司 A kind of flat glass furnace fining end bottom of pond method of construction
CN106045277B (en) * 2016-05-25 2019-05-28 信义节能玻璃（四川）有限公司 A kind of flat glass furnace fining end bottom of pond structure
US10584051B2 (en) * 2017-02-22 2020-03-10 Air Products And Chemicals, Inc. Double-staged oxy-fuel burner
TW202110757A (en) * 2019-08-19 2021-03-16 奧利佛 皮斯特 Method for removing disturbing metals like iron from glass
US11697608B2 (en) * 2019-10-01 2023-07-11 Owens-Brockway Glass Container Inc. Selective chemical fining of small bubbles in glass
US11459263B2 (en) 2019-10-01 2022-10-04 Owens-Brockway Glass Container Inc. Selective chemical fining of small bubbles in glass
US11319235B2 (en) 2019-10-01 2022-05-03 Owens-Brockway Glass Container Inc. Glass manufacturing process
CN114409254B (en) * 2022-03-08 2023-02-10 中国耀华玻璃集团有限公司 High-light-transmission anti-infrared energy-saving colored glass and melting device thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274643A (en) * 1939-12-19 1942-03-03 Pittsburgh Plate Glass Co Fining of glass
US2254079A (en) * 1940-02-06 1941-08-26 Pittsburgh Plate Glass Co Method and apparatus for forming and refining glass
US2387222A (en) * 1941-09-17 1945-10-16 Owens Illinois Glass Co Method of refining glass
US2330324A (en) * 1942-02-25 1943-09-28 Pittsburgh Plate Glass Co Fining of glass
AU452856B2 (en) * 1972-06-16 1974-09-19 Aci Operations Pty. Limited Glass colour changes
US4138235A (en) * 1977-05-31 1979-02-06 Ppg Industries, Inc. Method of making flat glass with lower sulfur-containing emissions
US4634461A (en) * 1985-06-25 1987-01-06 Ppg Industries, Inc. Method of melting raw materials for glass or the like with staged combustion and preheating
US4792536A (en) * 1987-06-29 1988-12-20 Ppg Industries, Inc. Transparent infrared absorbing glass and method of making
US4919698A (en) * 1989-06-21 1990-04-24 Ppg Industries, Inc. Avoidance of nickel sulfide stones in a glass melting operation

Also Published As

Publication number Publication date
MX172417B (en) 1993-12-15
BR9102428A (en) 1992-01-14
JPH06102552B2 (en) 1994-12-14
CA2039886C (en) 1995-03-21
KR930009886A (en) 1993-06-21
DE69112510D1 (en) 1995-10-05
EP0464501B1 (en) 1995-08-30
ES2078998T3 (en) 1996-01-01
ZA911909B (en) 1992-11-25
EP0464501A3 (en) 1993-08-11
KR930006315B1 (en) 1993-07-14
JPH04228433A (en) 1992-08-18
DE69112510T2 (en) 1996-04-25
DK0464501T3 (en) 1996-01-15
US5006144A (en) 1991-04-09
EP0464501A2 (en) 1992-01-08

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Legal Events

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EEER Examination request
MKLA Lapsed