295 results about "Soda lime" patented technology

A neutral-colored soda-lime-silicate glass with high light transmission in the visible region. The glass has a basic composition which contains at least the following constituents: SiO2, 66-75 weight %; Na2O, 10-20 weight %; CaO, 5-15 weight %; MgO, 0-6 weight %; Al2O3, 0-5 weight %; and K2O, 0-5 weight %; and incorporates a colorant portion comprising the following constituents: Co, 0.1-1 ppm; Fe2O3, <=0.03 weight % (total iron content); and FeO/Fe2O3, >0.4. The glass possesses a light transmittance (illuminant D 65 according to DIN 67 507) of at least 89% at a reference thickness of 4 mm.

Certain example embodiments relate to methods of making oxide thin film transistor arrays (e.g., IGZO, amorphous or polycrystalline ZnO, ZnSnO, InZnO, and/or the like), and devices incorporating the same. Blanket layers of an optional barrier layer, semiconductor, gate insulator, and/or gate metal are disposed on a substrate. These and/or other layers may be deposited on a soda lime or borosilicate substrate via low or room temperature sputtering. These layers may be later patterned and/or further processed in making a TFT array according to certain example embodiments. In certain example embodiments, all or substantially all TFT processing may take place at a low temperature, e.g., at or below 150 degrees C., until a post-annealing activation step, and the post-anneal step may take place at a relatively low temperature (e.g., 200-250 degrees C.).

Glass is provided so as to have high visible transmission and/or fairly clear or neutral color. In certain example embodiments, the glass may include a base glass (e.g., soda lime silica base glass) and, in addition, by weight percentage, from 0.01 to 0.30% total iron (expressed as Fe₂O₃). The glass may be made using a batch redox of at least +7.5.

The invention relates to a method for preparing silicon dioxide and aluminum oxide, in particular to a method for preparing silicon dioxide and aluminum oxide from coal ash. In the method, the coal ash, sodium carbonate and calcium oxide are used as raw materials, the sodium carbonate is causticized in situ by the calcium oxide, and is dissolved with alkali in a high-temperature high-pressure reaction system to form sodium silicate, calcium carbonate and desiliconized coal ash solid, wherein the sodium silicate solution is carbonated by CO2 to form silicon dioxide; and aluminum oxide and foam concrete can be prepared from the calcium carbonate and the desiliconized coal ash by a soda lime sintering method. Residues after aluminum oxide preparation can be used as a raw material for preparing a tail gas purification absorbent in cement and chemical plants and coal burning boilers, and the foam concrete. Compared with the prior art, the method has the advantages of weak reacting solution corrosion, high desiliconization rate, low metal content of prepared sodium carbonate and high white carbon black quality, high aluminum oxide extraction rate and the like; meanwhile, the raw material source is wide, the process is simple, the production cost is low, and the product additional value is high.

The invention relates to a method for recycling iron and aluminum by particle size grading pretreatment of Bayer process red mud, belonging to the technology for recycling red mud resources. The method comprises the following steps: firstly, Bayer process red mud is graded in terms of the particle size by using a physical method into coarse red mud and refined red mud; the coarse red mud is processed using physical mineral dressing processes, such as magnetic separation, gravity separation and the like, in order to obtain iron ore having high iron quality and coarse-grained sand, which are made use of respectively; the refined red mud is mixed with sodium carbonate, limestone and carbon power and is then subjected to reduction sintering, and two processes of magnetizing reduction roasting of iron and soda lime sintering of aluminum are implemented synchronously by means of the control of sintering conditions; sodium aluminate is dissolved out of clinker through dilute alkali solution, dissolved slag is subjected to magnetic separation to recover iron ore concentrate, and after being subjected to dealkalized cleaning, the residual calcium silicon slag is applied to building material industry. The method realizes combined recovery of iron, aluminum and other elements, magnificently achieves the comprehensive utilization of the Bayer process red mud, is capable of effectively relieving environment pollution resulting from the accumulation of the Bayer process red mud, and has excellent economic and social benefits.

An ultraviolet ray-absorbing, colorless and transparent soda-lime-silica glass is disclosed, which glass is prepared by irradiating a cerium containing soda-lime-silica glass with light having wavelengths in far- to near-ultraviolet region and thereby reducing transmittance to light with wavelengths in the region of 300-400 nm.

A method, test reagent and device usable as a test strip for detecting toxic ammonia levels in water samples such as aquarium water. The volume of the water to be tested contacted with a soda lime reagent to raise the pH to at least 10, and simultaneously contacted with a hydrophobic barrier membrane capable of allowing only ammonia gas to pass through. The membrane is coated with a pH chromogenic indicator mixture which changes color if ammonia gas passes through. The color response of the sample is compared with standard color charts to determine the toxic ammonia potential.

The subject of the invention is a glass composition of the silica-soda-lime type, intended for the manufacture of substrates or sheets, the said glass composition having a φ coefficient of between 0.50 and 0.85 N/(mm².° C.) and a working point of less than 1200° C.

A synthetic cork compound includes a methyl vinyl silicone polymer with a microsphere agent such as soda lime borosilicate in an amount of approximately 5 to 50 weight percent. The microsphere agent gives the compound a low density. The methyl vinyl silicone polymer preferably includes polydimethylvinylsiloxane polymer from about 45 to 90 weight percent and fumed silica from about 5 to 50 weight percent. Preferably, the compound is catalyzed using chloro-platanic acid from about 0.1 to 5 percent. Additional components of the compound include toasted oak dust from about 0.1 to 25 weight percent, ground cork from about 5 to 50 weight percent, a pigment from about 0.1 to 5 weight percent, silicon hydride from about 0.1 to 25 weight percent, and ethynyl cyclohexanol from about 0.05 to 5 weight percent.

The cyclopropene consists of: 1-methyl cyclopropene 0.3-4 weight portions, preservative 5-40 weight portions, stabilizer 60-90 weight portions, slow releasing agent 0-20 weight portions and excipient 0-5 weight portions. The preservative is one or several of 2-aminobutane, phosphate of 2-aminobutane, hydrochloride of 2-aminobutane, sulfate of 2-aminobutane, lactate of 2-aminobutane, sodium pyrosulfite, potassium pyrosulfite, sodium bisulfite, potassium bisulfite and propyl isothiocyanate; the release controlling agent is one or several of lime, sodium bicarbonate, soda lime, reductive microcrystal alditol acid lignin polyacrylamide; and the stabilizer is one or several of cyclodextrin, rosin, silica gel and lac. The slow releaseing preservative has obvious functions of resisting rot and keeping freshness.

A method for producing a 4A molecular sieve comprises the following steps: (a) an intermediate product sodium silicate solution or a product carbon white obtained in the process of extracting silicon dioxide by a fly ash alkali solution method, (b) an intermediate product sodium aluminate solution or products aluminum hydroxide and aluminum oxide obtained in the process of extracting aluminum oxide by a fly ash soda lime sintering method, (c) NaOH and (d). H2O are taken as raw materials which meet the following mol ratios: Na2O:SiO2=1.6-3.8:1 and SiO2:Al2O3=1.7-2.1:1, and water added is controlled at the mol ratio of H2O:Na2O=30-60:1; and the raw materials are evenly mixed, stirred and gelled at 50-80 DEG C, heated to 90-120 DEG C, kept standing and crystallized for 3-6 hours, filtered, washed and dried to obtain the 4A molecular sieve. The calcium exchange capacity of the produced 4A molecular sieve is not less than 310mgCaCO3/g, and the sieving rate of a 1.25mm sieve is not lower than 90%.

A coated article includes a glass substrate that supports a coating such as a low-E (low emissivity) coating. In certain example embodiments, the glass substrate is formed of a soda-lime-silica based glass composition manufactured using a float process. In certain example embodiments, lithium oxide (e.g., LiO₂) and/or potassium oxide (K₂O) is used in the soda-lime-silica based glass substrate in order to reduce sodium migration and/or improve surface stability. Such coated articles are useful, for example and without limitation, in architectural, vehicular and/or residential glass window applications.

The invention relates to an alumino-silicate glass which has a thermal expansion coefficient in the range of 8 to 10×10⁻⁶/K in a temperature range of 20 to 300° C., a transformation temperature Tg in a range of 580° C. to 640° C., and a processing temperature VA in a range of 1065° C. to 1140° C. and which can therefore be used as an alternative for soda lime glasses. An object of the invention is also the use of the inventive glasses in applications where a high temperature stability of the glasses is advantageous, in particular as substrate glass, superstrate glass and/or cover glass in the field of semiconductor technology, preferably for Cd—Te or for CIS or CIGS photovoltaic applications and for other applications in solar technology.

This invention relates to a method of making soda-lime-silica based glass. In certain example embodiments, boron oxide (e.g., B₂O₃) is used in the glass for reducing the refining time (or increasing the refining rate) thereof. The boron oxide may be introduced into the glass batch or melt in the form of boric acid, sodium tetraborate pentahydrate, sodium tetraborate decahydrate, sodium pentahydrate, or in any other suitable form. In certain example embodiments, the resulting soda-lime-silica based glass ends up including from about 0.1 to 3%, more preferably from about 0.1 to 2.5%, and most preferably from about 0.5 to 2.0% (e.g., about 1%), boron oxide. It has been found that the use of boron oxide, and/or the form in which the same is introduced into the glass, is advantageous in that it permits the refining time of the glass to be substantially reduced.

A first object of the present invention is to provide a light-scattering/reflecting substrate according to which adhesion between a light-scattering film and a reflecting film can be improved, and durability and chemical resistance can be improved. A light-scattering/reflecting substrate 1 is comprised of a soda lime silicate glass substrate 2, a light-scattering film 3 that has an undulating shape and is formed on the glass substrate 2, and a reflecting film 4 that is formed on the light-scattering film 3 following the undulating shape of the light-scattering film 3. The light-scattering film 3 is formed into the desired undulating shape by applying, onto a surface of the glass substrate 2, a material obtained by adding a photosensitive resin made of an organic material as a binder to an inorganic material such as silicon oxide (silica), aluminum oxide (alumina) or titanium oxide (titania), and then using a photolithography method.

The fruit and vegetable preserving backing consists of preferably: preservative 4-40 weight portions, physiological regulator 0-30 weight portions and gas regulator 0-30 weight portions. The preservative is one or two of 2-aminobutane, hydrochloride of 2-aminobutane, sulfate of 2-aminobutane, sodium pyrosulfite, potassium pyrosulfite, sodium bisulfite, potassium bisulfite, stable chlorine dioxide, propyl isothiocyanate, cinamic aldehyde and acetyldehyde; the physiological regulator is potassium permanganate and/or potassium bromate; and the gas regulator one or several of soda lime, sodium hydroxide, lime and active carbon. The present invention has the functions of reducing mechanical damage of fruits and vegetables, suppressing softening, yellowing and other senility symptoms of fruits and vegetables during storage and transportation, reducing rot of fruits and vegetables during transportation caused by vibration and pressure and regulating humidity inside the package.

The invention relates to a thin glass tempering treatment technology, and in particular relates to fused salt for thin glass chemical tempering and a production process thereof. The main component of the fused salt is KNO3, and the auxiliary component is KCl, K2CO3, KSb(OH)6 and gamma-Al2O3, the warming speed of a pre-heating furnace in the production process is 5+/-0.5 DEG C per minute, heat preservation is performed for 30+/-5 minutes after the temperature is raised to 350+/-5 DEG C, and then the glass is placed in the fused salt so as to be subjected to the ion exchange; the glass subjected to the ion exchange is placed in an annealing furnace so as to be cooled, and the temperature of the annealing furnace is 300+/-5 DEG.C; a power source is turned off after the glass is placed therein, so as to slowly cool to 50+/-5 DEG.C, and then the glass is taken out so as to be cleaned, dried and packaged. The surface stress of the normal soda lime silica glass produced by the invention can achieve 650MPa and more, the stress layer depth can achieve 23microns and more; the surface stress of alkaline alumina silicate glass can achieve 850MPa and more, and the stress layer depth can achieve 40 microns and more.

The invention provides a novel synthetic method of a bis-benzoxazine ketone ultraviolet absorbent, and belongs to the technical field of fine chemical engineering. The method comprises the following steps: A, stirring, anhydrides, used as raw materials, of o-aminobenzoic acid and (o-, m-, p-) phthaloyl dichloride or (o-, m-, p-)phthalic acid for a certain time in a non-polar solvent; B, adding chemical dehydrating agent or physical dehydrating agent in a reaction system without separating, slowly heating and refluxing for a certain time to obtain (o-, m-, p-)substituted bis-benzoxazine ketone ultraviolet absorbent; wherein the stirring time in the step A is not less than 1 hour, the refluxing time is 5-10 hours in the step B, the chemical dehydrating agent used in the step B is various dehydrating agents reacted with the water, including but not limited to alkaline calcium oxide, soda lime, acidic concentrated sulfuric acid, concentrated phosphoric acid, polyphosphoric acid, phosphorus pentoxide, thionyl chloride, acetic anhydride and the like, neutral molecular sieve, water-absorbent, anhydrous cupric sulfate and the like; the physical dehydrating agent comprises but not limited to non-protonic solvent such as benzene, methylbenzene, xylene and the like. The method provided by the invention has the advantages of being simple in operation flow, low in cost, simple in equipment, and suitable for the scale industrial production.

The invention is directed to a water-based paint composition comprising sodium silicate, water, water-soluble base, metal oxide pigment, a fused silica and, optionally, a low-melting glass frit, soda-lime-silica glass particles and/or zinc oxide. It may further optionally include surfactants and aluminum hydroxide. The paint composition is particularly useful as a black-out paint on automotive vehicle windshields and has been shown to impart improved stone chip resistance to the glass.

A process for making soda-lime glass includes calcinating calcium carbonate in solid phase and at elevated temperature to form calcium oxide and release gases such as carbon dioxide. Sodium silicate glass is formed separately in liquid phase while releasing gaseous reaction products. The calcium oxide and the sodium silicate glass intermediate products are mixed in liquid phase to form a soda-lime glass melt. Formation of sodium silicate glass as an intermediate product before mixing with the calcium oxide has the advantage of promoting release of gaseous reaction products in the sodium silicate due at least in part to the relatively low viscosity of the sodium silicate glass. The calcination step and/or the sodium silicate-forming step and/or the final mixing step can be carried out under reduced pressure further to promote release of gases and reduce bubble formation.

The invention discloses a method for detecting content of iron in photovoltaic glass based on X-ray fluorescence energy spectrum, belonging to the technical field of detection. The method comprises the following steps of: selecting a representative photovoltaic glass sample, and manufacturing a calibration sample after the value of the iron content achieves constant by using a flame atomic absorption spectrometry, so that a problem that a standard sample in photovoltaic glass iron content measurement is in shortage is solved; measuring the calibration sample with constant photovoltaic glass iron content on an X-ray fluorescence energy disperse spectroscopy; establishing a calibration curve of the content of the iron in the photovoltaic glass, which is measured by adopting the X-ray fluorescence energy spectrum method; measuring the content of the sample in the photovoltaic glass sample by adopting the established calibration curve and the X-ray fluorescence energy disperse spectroscopy under a working condition the same as that in measuring the calibration sample. According to the method provided by the invention, the relative standard deviation (n =11) of the iron content measurement is between 4.5% and 9.0%, and the method is precise and reliable. The method is applied to analyzing a photovoltaic glass practical sample, the measured result is consistent with the analyzed result of the soda-lime-silica glass chemical analysis method of the national standard method GB/T1347-2008, and the working efficiency is more than 50 times that of the national standard method GB/T1347-2008, so that the requirements of quickly analyzing large-scale samples can be satisfied.