low sodium and high temperature alumina

  • Sodium-vapor lamp - Wikipedia

    A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.. Two varieties of such lamps exist: low pressure and high pressure.Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting, such as street lamps, where they are widely used.

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  • Over 98% Alumina Ceramic (Al₂O₃) | Morgan Technical .

    AL-998 ® (99.8% Alumina) AL-998 ® is a high purity etch grade Alumina specifically developed for semiconductor processing applications. AL-998 ® is a unique material as free silica in the grain boundaries have been eliminated and it has low sodium purity levels which enable fine finishes and polishes to be achieved. This material features:

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  • High-Voltage, Room-Temperature Liquid Metal Flow .

    Na-K is a room-temperature liquid metal that could unlock a high-voltage flow battery. We show that K-β″-alumina solid electrolyte is stable to Na-K and selectively transports K+. We report the cycling of cells with OCVs of 3.1–3.4 V employing aqueous and nonaqueous posolytes, and maximum power densities of 65 mW cm−2 at 22°C, ohmically limited by 330-μm K-β″-alumina membranes.

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  • High alumina and fireclay refractory mortars

    High alumina and fireclay refractory mortars ... 2.Binder--Cement,phosphoric acid or phosphate,sodium silicate. Application. ... under high temperature,used in hot-blast furnace,coke oven ects The silica refractory mortar are with high RUL and low shrinkage under high temperature,used in hot-blast furnace,coke oven,glass furnace and so on. Read ...

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  • High Temperature Calcined Alumina Powder For Ceramics ...

    High quality High Temperature Calcined Alumina Powder For Ceramics Refractories Industry from China, China's leading high purity alumina powder product, with strict quality control aluminum oxide powder factories, producing high quality aluminum oxide powder products.

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  • High Purity Alumina and Zeolite from Local Low Grade Kaolin

    High purity alumina that is used for high technical applications are required to be of more than 95% purity with very low sodium and iron content. In the traditional processing method, the sodium impurity mainly comes from the used of sodium hydroxide whilst iron is present in the bauxite mineral [2].

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  • Low temperature electrochemical cells with sodium β ...

    5/15/2008· The first high temperature battery near commercialization is the sodium/sulfur battery which uses liquid sulfur as the positive electrode, liquid sodium as the negative electrode and sodium β″-alumina solid electrolyte (BASE).

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  • Recovery of alumina from fly ash by high-temperature ...

    @article{osti_6944060, title = {Recovery of alumina from fly ash by high-temperature chlorination}, author = {Burnet, G and Murtha, M J and Wijatno, H}, abstractNote = {The large volume of fly ash being produced, largely in centralized locations, and the composition of the ash present unique opportunities for the recovery of minerals. A typical United States fly ash will contain about 21% ...

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  • Reactivity of thin metal films on sodium beta″ alumina ...

    Reactivity of thin metal films on sodium beta ″ alumina ceramic in high temperature, low pressure sodium vapor AIP Conference Proceedings 552, 1100 (2001); ... electrode decomposition and reaction of electrode materials with the sodium beta″ alumina solid electrolyte.

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  • High alumina and fireclay refractory mortars

    High alumina and fireclay refractory mortars ... 2.Binder--Cement,phosphoric acid or phosphate,sodium silicate. Application. ... under high temperature,used in hot-blast furnace,coke oven ects The silica refractory mortar are with high RUL and low shrinkage under high temperature,used in hot-blast furnace,coke oven,glass furnace and so on. Read ...

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  • High temperature conductivity of potassium-β″-alumina ...

    7/1/1992· 4. Conclusions The high temperature conductivity of potassium- ~'-alumina ceramic is greater than one half that of sodium-~'-alumina ceramic at temperatures near 1100 K. The conductivity is high enough to allow the use of potassium as a working fluid in AMTECs op- erating in the range 800-1100 K.

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  • Reactivity of thin metal films on sodium beta″ alumina ...

    Reactivity of thin metal films on sodium beta ″ alumina ceramic in high temperature, low pressure sodium vapor AIP Conference Proceedings 552, 1100 (2001); ... electrode decomposition and reaction of electrode materials with the sodium beta″ alumina solid electrolyte.

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  • Common High Temperature Calcined Alumina-Haiwei .

    4N High Purity alumina powder for translucent alumina; 3N High Purity Alumina fine powder for polishing; High Purity Alumina Flakes ( Flaky alumina/lamellar alumina ) Sintered Alumina. Tabular Alumina; Common High Temperature Calcined Alumina; Non-Mineralizer Low Sodium Calcined Alumina; Mineralizer Low Sodium Calcined Alumina; Aluminum ...

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  • Sparked Reduced Graphene Oxide for Low-Temperature .

    At low temperatures below 200 °C, liquid Na wets poorly on a solid electrolyte near its melting temperature (T m = 98 °C), limiting its suitability for use in low-temperature batteries used for large-scale energy-storage systems. Herein, we propose the use of sparked reduced graphene oxide (rGO) that can improve the Na wetting in sodium-beta ...

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  • Common High Temperature Calcined Alumina-Haiwei .

    4N High Purity alumina powder for translucent alumina; 3N High Purity Alumina fine powder for polishing; High Purity Alumina Flakes ( Flaky alumina/lamellar alumina ) Sintered Alumina. Tabular Alumina; Common High Temperature Calcined Alumina; Non-Mineralizer Low Sodium Calcined Alumina; Mineralizer Low Sodium Calcined Alumina; Aluminum ...

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  • A High Temperature Electrochemical Energy Storage .

    @article{osti_935426, title = {A High Temperature Electrochemical Energy Storage System Based on Sodium Beta-Alumina Solid Electrolyte (Base)}, author = {Virkar, Anil}, abstractNote = {This report summarizes the work done during the period September 1, 2005 and March 31, 2008. Work was conducted in the following areas: (1) Fabrication of sodium beta{double_prime} alumina solid .

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  • Synthesis and characterization of high ionic-conductive ...

    In this work, sodium beta-alumina solid electrolytes with high β″-Al2O3 content and high density are synthesized through solid-state reaction method employing boehmite as alumina sources. The influences of sodium oxide dosage on the phase component, texture structure, and ionic conductivity as well as the application performances in sodium ions battery for the synthesized beta-alumina ...

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  • Low Price Tabular Alumina Sintered Alumina Powder For .

    Tabular Sintered Alumina Once upon a time, calcined alumina powder market and production but most companies are competing with each other in cheap imitation among the front row, few supplier can be comparable with foreign products. costs, provides a comprehensive technical and after-sales service, increases. Low Sodium Alumina

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  • High temperature ceramic chemical name is called .

    When one of the alumina content gradually increased, ceramic ability under high temperature.Containing 70% alumina ceramics, for example, the highest temperature is 1400 ℃, 90, a 95% alumina 1500 a 1550 ℃, 99% of alumina is up to 1700 a, 1800 ℃, and contain more than 99.5% of the alumina can reach more than 1900 ℃.Made of pure aluminum ...

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  • High Temperature Low Sodium Alumina_Shandong .

    Shandong Seibou Chemical Technology Co.,Ltd. Add:31 Yumin road High-tech Development Zone, Zibo, Shandong Tel:86-533-3590266 / 86-533-3588977

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  • High-Voltage, Room-Temperature Liquid Metal Flow .

    Na-K is a room-temperature liquid metal that could unlock a high-voltage flow battery. We show that K-β″-alumina solid electrolyte is stable to Na-K and selectively transports K+. We report the cycling of cells with OCVs of 3.1–3.4 V employing aqueous and nonaqueous posolytes, and maximum power densities of 65 mW cm−2 at 22°C, ohmically limited by 330-μm K-β″-alumina membranes.

    Get price
  • Low-Temperature Sintering of Alumina with Liquid-Forming ...

    forming additives to alumina resulted in a sintered density of >99% in 1 h at a temperature as low as 1070°C for a commercial high-purity alumina powder at a total dopant level of 2 mol%. The additives were 0.9% CuO + 0.9% TiOz + 0.1% B203 + 0.1% MgO. At higher temperatures or after prolonged sintering, the doped alumina ceramic de-

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  • Chemical Alumina -

    Chemical alumina refers to aluminum hydroxides, alumina and alumina-bearing compounds apart from alumina used for producing aluminum. The products are widely applied in industries covering artificial panels, pottery and porcelain, fire-resistant materials, laundry, petrifaction, fluoride salt (aluminum fluoride, cryolite), activated alumina, high-temperature alumina, water clarifying agent ...

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  • High Temperature Low Sodium Alumina_Shandong .

    Shandong Seibou Chemical Technology Co.,Ltd. Add:31 Yumin road High-tech Development Zone, Zibo, Shandong Tel:86-533-3590266 / 86-533-3588977

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  • Sodium Plating from Na‐β″‐Alumina Ceramics at Room ...

    Owing to its high ionic conductivity, low electronic conductivity, and stability against sodium metal, Na‐β″‐alumina is already commercially employed in high‐temperature sodium–nickel‐chloride (NaNiCl) and sodium–sulfur (NaS) batteries operating near 300 °C. 14-16 However, high interfacial resistance, possibly associated with ...

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  • US6203773B1 - Low temperature mineralization of .

    Alpha alumina particles are made by heating particles of alumina with an aqueous solution containing a dissolved fluorine-containing compound and an acid; separating the particles from the solution and then calcining the particles at a temperature not greater than about 1025° C. The alumina particles preferably have an LOI in the range of about 1-20 wt. %; more preferably about 1-6 wt. %.

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  • US4615875A - Process for preparing high purity alpha ...

    High purity alumina with a low sodium content and with a friable, easily ball milled structure is produced in this invention through a modified sol-gel procedure which includes digestion of the contaminant containing aluminum metal with hydrochloric acid in the presence of excess aluminum, removal of the contaminants, seeding the resulting sol with high purity alumina, drying to a solid, and ...

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  • Diffusion and ionic conductivity in sodium-β-alumina .

    Sodium tracer diffusivity and ionic conductivity have been measured from room temperature down to -79°C on the same single crystals of sodium-β-alumina of composition 1.23Na 2 O·11Al 2 O 3 . The Haven ratio decreases from 0.35 at room temperature to 0.18 at -79°C. The low value of H R and its temperature dependence can be explained in terms of high correlation effects for ionic diffusion ...

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  • Low-temperature sintering of sodium beta alumina ceramics ...

    ing process because of the high volatility of alkaline elements at high temperatures [16–18]. The sintering temperature of sodium beta alumina ceramics is gen-erally higher than 1600°C [19–21]. The volatilization of sodium at high sintering temperature and the poor densities at low sintering temperature are deleterious to

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  • Sodium-vapor lamp - Wikipedia

    A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.. Two varieties of such lamps exist: low pressure and high pressure.Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting, such as street lamps, where they are widely used.

    Get price
  • Global Energy Trends in Alumina Refinery

    mass of alumina produced) due to high available alumina content The content of organics in the bauxite is very low, results in very low impurities in the plant liquor. The spent liquor analysis shows, the concentration of organic carbon, sulfaet and oxalate are low and causticity of liquor is very high. The plant is operated with a high

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  • China Low sodium calcined alunima Manufacturers ...

    Calcined Alumina is produced by high-quality raw materials at high temperature, with characteristics of high conversion rate, stable crystallization and low impurity content. The product has excellent performance of high mechanical strength, stable shrinkage rate, good electrical insulation, high attrition resistance, outstanding corrosion ...

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  • Low-Temperature Sintering of Alumina with Liquid-Forming ...

    forming additives to alumina resulted in a sintered density of >99% in 1 h at a temperature as low as 1070°C for a commercial high-purity alumina powder at a total dopant level of 2 mol%. The additives were 0.9% CuO + 0.9% TiOz + 0.1% B203 + 0.1% MgO. At higher temperatures or after prolonged sintering, the doped alumina ceramic de-

    Get price