Classifications

• • 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
  • C03C1/02—Pretreated ingredients
  • C03C1/026—Pelletisation or prereacting of powdered raw materials

Definitions

• the present invention relates to a product, a process for its preparation, and the use of such
• the present invention relates to a process that produces a
• solid state particle that is particularly useful in the production of glass products, such as flat
• the glass reaction generally involves the reaction of materials to produce a
• composition containing the reacted and/or dispersed components of silica (silicon dioxide from
• Such considerations include, for example, reaction of a portion of the materials before creating a total glass batch.
• one scheme is pretreatment of the batch constituents by calcining the limestone and/or dolomite
• melting begins is advantageous since it reduces the entrapping of gaseous inclusions in the glass.
• thermodynamics or quality or yield results. While advances have been made, there still exists the
• silicates prior to melting is disclosed in which a lowered reaction temperature between
• silica is reacted with sodium carbonate to form sodium silicate in as a
• the method preferably calcines calcium carbonate-
• the present invention discloses a process that includes preferentially reacting a portion of a glass
• the present invention further discloses a solid state particle comprising silicon, calcium and
• the present invention further discloses a glass composition comprising silica, soda ash, lime or
• limestone a solid state particle containing silicon dioxide, calcium hydroxide, magnesium oxide,
• the solid state particle of the present invention is particularly useful in production of glass
• product such as flat glass, fiberglass, container glass, lighting glass, tableware, and the like.
• Figure 1 shows the unreacted silica (stones) per pound of glass as a function of dwell time at a
• the glass batch using the invention will melt faster allowing for more throughput on
• Figure 2 shows the energy evolved or absorbed as a function of temperature for a control glass
• Solid state particle refers to a mixture of
• the solid state particle comprising
• This solid state particle is admixed with a mass containing a balance of other glass-
• Such other glass-forming materials may include
• the silicon material of the solid state particle is silicon dioxide, and, more preferably, a silica
• Preferred sources of such include sand, silica flour, nepheline syenite, and spodumene.
• the silicon material particle size is 90% less than 0.0075 Centimeters to promote a
• thermodynamic advantage towards the solid state reaction versus the standard glass reaction thermodynamic advantage towards the solid state reaction versus the standard glass reaction.
• the calcium material of the solid state particle is calcium oxide and, more preferably, a calcium
• Preferred sources of such include dolomite lime, dolomitic limestone, calcite, lime,
• the calcium material particle size is 90% less than 0.0075 Centimeters to promote a
• thermodynamic advantage towards the solid state reaction versus the standard glass reaction thermodynamic advantage towards the solid state reaction versus the standard glass reaction.
• the magnesium material of the solid state particle is magnesium oxide and, more preferably, a
• magnesium hydroxide Preferred sources of such include dolomitic lime, dolomitic limestone,
• magnesium material particle Preferably the magnesium material particle
• the solid state particle size should be of a magnitude that promotes the attainment and retention
• the solid state particle size should be of a similar magnitude of the other glass batch
• components more preferably of the silicon source material, e. g. sand, used in the total glass
• the median size of the solid state particle material should be from about 75
• a preferred solid state particle material is an agglomerate of minerals produced by the admixture
• agglomerate is formed to a particle size which approximates the sand balance to be used in the glass batch, preferably from about 0.018 centimeters to about 0.14 centimeters, more preferably,
• the product of the reacted solid state particle, that occurs within the total glass batch can be a
• calcium magnesium silicate having an empirical formula of (CaO) x (MgO) y (SiO 2 ) z , wherein the
• weight values of x and y relative to the amount of silica is sufficient to produce an exothermic
• x, y, and z have the respective ranges from about zero (0) to about three (3),
• reaction to completion is provided to the glass batch system.
• a glass product is to have components of silicon, sodium, calcium, magnesium, measurable in
• silica dioxide Si 2
• sodium oxide Na ⁇
• calcium oxide CaO
• magnesium magnesium
• a sand material is selected as a feed material.
• the sand has a size measurement of 30 mesh to 140 mesh.
• silica, and calcium components agglomerated with water, dried, and screened, is added to the
• the agglomerated (solid state) particles contain silicon dioxide (SiO,),
• hydrated calcium oxide Ca(OH) 2
• hydrated magnesium oxide Mg(OH) 2
• periclase MgO
• This agglomerated particle material is combined with the sand to be used in an amount to
• the agglomerated particle does not contain sufficient calcium value for the glass. Since the agglomerated particle does not contain sufficient calcium value for the glass.

Landscapes

• 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)
• Glass Melting And Manufacturing (AREA)
• Glass Compositions (AREA)

Applications Claiming Priority (1)

Publications (1)

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Family Cites Families (13)

• 2001
  • 2001-12-27 CN CNB018237843A patent/CN1307115C/zh not_active Expired - Lifetime
  • 2001-12-27 EP EP01985108A patent/EP1458650A1/de not_active Withdrawn
  • 2001-12-27 WO PCT/US2001/049926 patent/WO2003057636A1/en active Application Filing
  • 2001-12-27 AU AU2002234091A patent/AU2002234091A1/en not_active Abandoned
  • 2001-12-27 JP JP2003557957A patent/JP4219816B2/ja not_active Expired - Fee Related
  • 2001-12-27 MX MXPA04005800A patent/MXPA04005800A/es unknown
  • 2001-12-27 BR BR0117185-2A patent/BR0117185A/pt not_active Application Discontinuation
  • 2001-12-27 CA CA002467176A patent/CA2467176A1/en not_active Abandoned
• 2005
  • 2005-04-08 HK HK05102973A patent/HK1070346A1/xx not_active IP Right Cessation

Non-Patent Citations (1)

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