摘要:
Thermally fusible material such as glass batch is liquefied using a solid carbonaceous fuel such as coal as the major energy source. In another embodiment, solid or liquid fuel is mixed with the batch material being fed to an initial liquefaction stage. Melting may be advanced further in a subsequent stage where the melt may also be re-oxidized.
摘要:
A soda-lime-silica glass for solar collector cover plates and solar mirrors has less than 0.010 weight percent total iron as Fe2O3, a redox ratio of less than 0.350, less than 0.0025 weight percent CeO2, and spectral properties that include a visible transmission, and a total solar infrared transmittance, of greater than 90% at a thickness of 5.5 millimeters, and reduced solarization. In one non-limiting embodiment of invention, the glass is made by heating a pool of molten soda-lime-silica with a mixture of combustion air and fuel gas having an air firing ratio of greater than 11, or an oxygen firing ratio of greater than 2.31. In another non-limiting embodiment of the invention, streams of oxygen bubbles are moved through a pool of molten glass. In both embodiments, the oxygen oxidizes ferrous iron to ferric iron to reduce the redox ratio.
摘要翻译:用于太阳能收集器盖板和太阳能反射镜的钠钙石英玻璃具有小于0.010重量%的铁,如Fe 2 O 3,氧化还原比小于0.350,小于0.0025重量%的CeO 2,以及包括可见透射, 和总太阳红外透射率,厚度为5.5毫米时大于90%,减少了日晒。 在本发明的一个非限制性实施方案中,玻璃通过用燃烧空气和空气燃烧比大于11的燃料气体的混合物加热熔融的钠钙二氧化硅池,或者燃烧比大于11 超过2.31。 在本发明的另一非限制性实施方案中,氧气泡流移动通过熔融玻璃池。 在两个实施方案中,氧氧化亚铁铁至三价铁以降低氧化还原比。
摘要:
A glass composition that includes a base glass composition including: SiO2 from 65 to 75 weight percent, Na2O from 10 to 20 weight percent, CaO from 5 to 15 weight percent, MgO from 0 to 5 weight percent, Al2O3 from 0 to 5 weight percent, K2O from 0 to 5 weight percent, and a colorant and property modifying portion including total iron ranging from of equal to or less than 0.6 weight percent; and TiO2 ranging from 0.1 to 1.0 weight percent, wherein the redox ratio ranges from 0.33 to 0.45 and the weight percents are based on the total weight of the composition.
摘要:
The present invention provides a blue colored glass using a standard soda-lime-silica glass base composition and additionally iron and cobalt, and optionally chromium, as solar radiation absorbing materials and colorants. In particular, the blue colored glass includes about 0.40 to 1.0 wt. % total iron, preferably about 0.50 to 0.75 wt. %, about 4 to 40 PPM CoO, preferably about 4 to 20 PPM, and 0 to 100 PPM Cr2O3. The redox ratio for the glass of the present invention is greater than 0.35 up to about 0.60, and preferably between about 0.36 to 0.50. In one particular embodiment of the invention, the glass has a luminous transmittance of at least 55% and a color characterized by a dominant wavelength of 485 to 489 nanometers and an excitation purity of about 3 to 18 percent. In another embodiment of the invention, the glass has a luminous transmittance of at least 65% at a thickness of about 0.154 inches (3.9 mm) and a color characterized by a dominant wavelength of 485 to 492 nanometers and an excitation purity of about 3 to 18 percent.
摘要:
The present invention provides a glass composition having a neutral gray color and a luminous (visible) transmittance within a range that allows the glass to be used as privacy glazing in a vehicle. The glass of the present invention has a standard soda-lime-silica flat glass base composition and uses iron, cobalt and selenium, and optionally nickel, as the colorants. It has also been found that a nickel-free, neutral gray colored glass with a luminous transmittance (C.I.E. illuminant A) of up to 40% at a thickness of 3.9 millimeters may be attained by using as colorants: 0.59 to 0.99 wt. % of the total glass Fe2O3 (total iron), no greater than 0.30 wt. % FeO; 60 to 180 PPM CoO and 5 to 30 PPM Se. It has been found that a nickel-bearing, neutral gray colored glass with a luminous transmittance (C.I.E. illuminant A) of up to but less than 40% at a thickness of 3.9 millimeters may be attained by using as colorants: 0.35 to 1.1 wt. % of the total glass Fe2O3 (total iron), no greater than 0.30 wt. % FeO; 60 to 180 PPM CoO; 1 to 30 PPM Se; and 25 to 550 PPM NiO.
摘要:
The present invention provides a blue colored glass using a standard soda-lime-silica glass base composition and additionally iron and cobalt as solar radiation absorbing materials and colorants. In particular, the blue colored glass includes about 0.53 to 1.1 wt. % total iron, preferably about 0.6 to 0.85 wt. % and about 5 to 40 PPM CoO, preferably about 15 to 30 PPM and a luminous transmittance of at least 55%. If desired, the composition may include up to about 100 PPM Cr.sub.2 O.sub.3. The redox ratio for the glass of the present invention is maintained between about 0.25 to 0.35, preferably between about 0.28 to 0.33. The glass color is characterized by a dominant wavelength (DW) of about 485 to 491 nanometers and an excitation purity (Pe) of about 3 to 18 percent. In one particular embodiment of the invention, the color of the glass is characterized by a dominant wavelength in the range of about 487 to 489 nanometers and an excitation purity of about 3 to 8 percent at a thickness of about 0.084 to 0.126 inches, an excitation purity of about 5 to 12 percent at a thickness of about 0.126 to 0.189 inches, and an excitation purity of about 10 to 18 percent at a thickness of about 0.189 to 0.315 inches.
摘要:
A green tinted, ultraviolet absorbing glass is disclosed having a standard soda-lime-silica base glass composition and a colorant portion consisting essentially of:______________________________________ CeO.sub.2 Less than 0.5 weight % Total iron Greater than 0.85 weight % (as Fe.sub.2 O.sub.3) FeO/total iron Less than 0.275. ______________________________________ The glass reduces the amount of costly cerium required to yield low ultraviolet transmittance, viz., no greater than 31 percent (300 to 390 nanometers) at a reference thickness of 3.9 millimeters.
摘要:
A blue colored, infrared and ultraviolet absorbing glass composition uses a standard soda-lime-silica glass base composition and additionally iron, cobalt, and additional colorants selected from the group of Er2O3, Cr2O3, CuO, NiO, TiO2, Nd2O3 and combinations thereof. The glass of the present invention has a luminous transmittance of up to 60 percent, a dominant wavelength in the range of 480 to 489 nanometers and an excitation purity of at least 8 percent at a thickness of 0.160 inches (4.06 millimeters). The glass composition can form transparent glass panels that have varying limited LTA from one another as panel sets for mounting in automobiles.
摘要:
A vehicle roof window includes an uncoated glass transparency having an Lta in the range of greater than 0% to 10%, and a solar factor in the range of equal to or less than 30%, measured at a thickness in the range of 3.6-4.1 millimeters (‘mm”), e.g. at a thickness of 3.6 mm, 3.9 mm or 4.1 mm. The solar factor is determined in accordance to International Organization for Standardization (“ISO”) No. 13837.
摘要:
A high transmittance glass includes: SiO2 in the range of 65 to 75 weight percent; Na2O in the range of 10 to 20 weight percent; CaO in the range of 5 to 15 weight percent; MgO in the range of 0 to 5 weight percent; Al2O3 in the range of 0 to 5 weight percent; K2O in the range of 0 to 5 weight percent; MnO2 in the range of 0.035 to 0.6 weight percent; FeO in the range of 0.0010 to 0.0030 weight percent; and Fe2O3 (total iron) in the range of 0.001 to 0.03 weight percent. The glass has a redox ratio in the range of 0.1 to 0.4.
摘要翻译:高透光率玻璃包括:在65至75重量%范围内的SiO 2; Na 2 O在10至20重量%的范围内; CaO在5至15重量%的范围内; 在0至5重量百分比范围内的MgO; 在0至5重量%范围内的Al 2 O 3; K2O在0〜5重量%的范围内; MnO 2在0.035〜0.6重量%的范围内; FeO在0.0010至0.0030重量百分比的范围内; 和Fe 2 O 3(总铁)的范围为0.001〜0.03重量%。 玻璃的氧化还原比在0.1〜0.4的范围内。