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4248752 |
Refractory moldable composition
A refractory moldable composition which, upon drying, sets up to refractory shapes which are strongly adherent to the molding surfaces and are essentially crack-free, contains about 45 to about 65%...
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4240833 |
Shrink-resistant refractory fiber and process for making same
A shrink resistant flexible ceramic fiber and its process of manufacture which comprises melting from about 40 to 65 weight percent of alumina with from about 35 to about 60 weight percent of...
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4208214 |
Refractory compositions
Improved carbon-containing, chemically bonded, refractory compositions, usually magnesia or alumina base, including about 1% to 20% by weight carbon and about 0.5% to 10% by weight steel fibers,...
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4205032 |
Method for producing rigid articles of refractory fibers
The present invention provides a method of rigidizing articles of refractory fibres. This is achieved by impregnating the fibre article with a zirconium salt, a gellation-inducing agent and a...
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4201606 |
Refractory exothermic heating insulating articles
Refractory articles are described which are of use e.g. as hot top lining slabs or riser sleeves in the metallurgical industry. The slabs are both heat insulating and they have exothermic...
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4194914 |
Heat-resisting ceramic fibers and method for manufacture thereof
Highly heat-resisting ceramic fibers are manufactured either by simply coating the surface of ceramic fibers with at least one phosphorus compound or by further subjecting the resultant coated...
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4178411 |
Fibre expanded reinforced materials and their process of manufacture
A very low density material is produced by extruding a composition comprising a settable fluid containing long resilient fibres through a narrow die under conditions which cause the extrudate to...
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4174331 |
Refractory moldable composition containing ceramic fiber and colloidal silica
A refractory moldable composition which, upon drying, sets up to refractory shapes which are strongly adherent to the molding surfaces and are essentially crack-free, contains about 45 to about 65%...
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4166147 |
Shaped and fired articles of TiO.sub.2
Solid, shaped and fired refractory articles, such as fibers and microspheres, of titanium dioxide are made by shaping, gelling, and firing titania sols. Said fibers can be made by extruding in air...
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4152381 |
Method for preparing metallated filament-wound structures
Metallated graphite filament-wound structures are prepared by coating a continuous multi-filament carbon yarn with a metal carbide, impregnating the carbide coated yarn with a polymerizable carbon...
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4144195 |
High temperature resistant, heat insulating ceramic material
A high temperature resistant, heat insulating ceramic material comprises a mixture of 30 to 60 volume percent aluminum oxide power and 70 to 40 volume percent alumina-silica fibers sintered...
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4127556 |
Ceramic fiber molding for manifold reactors
Ceramic fiber molding for manifold reactors in which Al 2 O 3 --SiO 2 ceramic fibers or SiO 2 ceramic fibers are employed to form a molded product having a hardness of 20° - 55°, a tensile...
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4125406 |
Alumina-chromia-metal (IV) oxide refractory fibers having a microcrystalline phase
Refractory fibers having a composition of 10-75% Al 2 O 3 , 1-30% Cr 2 O 3 and 10-75% metal (IV) oxide selected from at least one of silica, titania, zirconia, and tin oxide and having at least...
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4104355 |
Vitreous fiber drawing process
Fibers composed of mixtures of refractory metal oxides, other than silica, are treated by a process involving a drawing step to markedly increase the modulus of elasticity of the fibers. The...
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4101615 |
Process for producing alumina fiber or alumina-silica fiber
A process for producing alumina fiber or alumina-silica fiber having excellent mechanical strength and heat resistance, comprising (i) spinning a solution of at least one polyaluminoxane or of a...
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4099949 |
Method of reducing deterioration of electric furnace refractory metal components
A process is described for the reduction or prevention of deterioration of refractory metal components of an electric furnace by chromia-containing oxide melts. The process is based on the...
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4094690 |
Liquid composition
A liquid composition comprising a solution of a water-soluble metal compound convertible to metal oxide and a smaller amount of a hydrolytically stable water-soluble organic silicone which may be...
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4090881 |
High temperature refractory adhesive
A high temperature non-conducting inorganic refractory adhesive suitable for use in conjunction with a number of substances including conducting elements metallic in nature.
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4071594 |
Production of continuous ceramic fibers
Thin continuous fibers or filaments of alumina or other ceramic or refractory materials are extruded, attenuated and wound from a slip comprising particles of the refractory or ceramic material and...
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4055434 |
Refractory fiber composition and intermediate temperature range fibrous insulation composed thereof
Refractory fiber compositions are disclosed comprising 84% to 97% by weight total silica and alumina, with the silica-to-alumina weight ratio being in the range of 3:2 to 1:1, preferably...
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4047965 |
Non-frangible alumina-silica fibers
Transparent, smooth, fracture resistant, discreet, refractory oxide fibers of homogeneous chemical composition comprising 96 to 100 weight percent of a mixture or chemical combination of 67 to 77...
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4040847 |
Temperature stable fibrous insulation composition and "wet" package formed thereof
A novel refractory fiber thermal insulation and a "wet pack" moldable insulation package formed thereof are described. This composition comprises refractory fiber having combined therewith a binder...
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4014704 |
Insulating refractory fiber composition and articles for use in casting ferrous metals
An insulating composition useful for riser sleeves, hot tops, ladle liners, and the like articles for use in casting of molten ferrous metal is described. The composition comprises 30% to 50%...
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4013476 |
Non-combustible molding material
A non-combustible molding material is produced from (a) a hydraulic inorganic mixture consisting of an inorganic substance composed predominantly of silica and an inorganic substance predominantly...
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4008299 |
Method of making a fibre of aluminium phosphate
A method is provided for preparing a fibre from a solution of a halogen-containing complex phosphate of aluminium. The complex contains at least one chemically-bound molecule of a hydroxy compound...
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3996145 |
Fibrous materials
A fibrous structure, for example, a batt, mat, blanket, felt, cloth, paper or board, comprising staple fibers of polycrystalline alumina, alumina/silica, or zirconia having an average diameter of...
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3994740 |
Shaped bodies of alumina and silica
A liquid composition comprising a solution of a water-soluble metal compound convertible to metal oxide and a smaller amount of a hydrolytically stable water-soluble organic silicone which may be...
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3982955 |
Aluminum oxide fibers and their production
Aluminum oxide fibers of the approximate percent composition by weight: TBL ______________________________________ Al 2 O 3 61-98% preferably 76-96% SiO 2 1-20% preferably 3-15% P 2 O 5...
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3975194 |
Formation of hollow spherical articles
Hollow articles, in particular microballoons, hollow fibers and other shapes, are prepared by dispersing or dissolving a soluble film-forming solid in a core solvent which is normally solid but...
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3974072 |
Filtration method
Microorganisms are removed from cutting-oil emulsions, and their growth is inhibited by passage through a filter comprising an inorganic fiber.
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3971840 |
Production of high strength carbide fibers by heat treatment
A process for strengthening carbide fibers by removing internal stresses caused by their formation. This process is accomplished by drawing the carbide fiber under tension through a furnace. The...
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3953561 |
Firing process for alumina yarn
Process for producing continuous alumina multifilament yarns which comprises preparing an aqueous spinning mix containing selected alumina particles and water-soluble precursors of alumina in...
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3950478 |
Process for producing alumina fiber
Alumina fibre is prepared by spinning a solution containing an aluminium compound and an organic polymer, removing solvent and contacting the fibre with ammonia or an amine before conversion of the...
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3947534 |
Processing of aluminum oxide fibers
In the production of aluminum oxide fibers comprising dry spinning an aluminum-containing solution to produce fiber and thereafter heat treating the fiber, the improvement which comprises applying...
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3935060 |
Fibrous insulation and process for making the same
An insulative material comprises a random network of ceramic fibers and a binder for holding the fibers together. In addition, it may include a filler material composed of hollow ceramic spheres...
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3909278 |
High density thoria-silica-metal (III) oxide fibers
Transparent refractory fibers, at least 50 percent thoria and additionally containing silica and metal(III) oxides, particularly Al 2 O 3 and B 2 O 3 or Cr 2 O 3 are made by shaping and...
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3904427 |
Protection of turbine casings
Shaped refractory articles, especially turbine casing liners, are formed of a refractory fibre/watersoluble binder composition, the hardness, strength and density of which do not vary across the...
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3873328 |
CATALYTIC CRYSTALLINE GLASS FIBERS
Catalytic, oxidation-inducing glass fibers and a process for forming them are disclosed in which the glass of the fibers is substantially crystalline and contains from about 10 percent to about 70...
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3865917 |
Preparation of alumina monofilaments
A process for preparing continuous aluminum salt filaments convertible to transparent alumina filaments wherein an aqueous fiber-forming solution of hydrated monochloro aluminum hydroxide is...
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3860529 |
STABILIZED TETRAGONAL ZIRCONIA FIBERS AND TEXTILES
Zirconia fibers and textiles that are stabilized in the tetragonal form by small, carefully controlled amount of oxides of the metals of Group III B of the Periodic Table. The stabilized tetragonal...
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3853688 |
CONTINUOUS FILAMENTS AND YARNS
Small diameter, but unusually strong polycrystalline alumina filaments are disclosed. They contain small randomly oriented grains, and contain a number of pores in which the volume of an average...
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3808015 |
ALUMINA FIBER
A polycrystalline ceramic oxide fiber containing at least 60% Al 2 O 3 , at least part of which is in an α-alumina phase. The fiber is windable on a bobbin and is of high strength. It is made by...
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3803816 |
PATTERNED FLOW VENT STRUCTURE
A vent structure for reliable long term operation at high temperatures is fabricated by annealing a tubing of predetermined length and size, placing a predetermined number of strands of stabilized...
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3775141 |
HARDENED INORGANIC REFRACTORY FIBROUS COMPOSITIONS
Inorganic fibers such as mineral wool are bonded in a coherent mass with a binder such as colloidal positively charged particles having a silica core and a coating of a polyvalent metal-oxygen...
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3770466 |
HEAT-INSULATING SHAPED COMPOSITIONS
Heat insulating compositions useful as slabs, riser sleeves, and the like are disclosed which consist essentially of a refractory fibrous material such as synthetic mineral wool, a binder, and a...
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3760049 |
METHOD OF FIRING DRY SPUN REFRACTORY OXIDE FIBERS
A viscous solution or dispersion of soluble or dispersed metal compounds is extruded from a spinnerette, the resulting continuous green fibers are drawn in air (preferably as a strand) and allowed...
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3754948 |
REFRACTORY COMPOSITIONS
Refractory insulating compositions which comprise mineral wool and ceramic fibre in admixture. Up to 60 percent by weight of the composition preferably can be mineral wool for low temperature...
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3725533 |
BORON CARBIDE FIBER PRODUCTION
Boric oxide fibers having a maximum diameter of about 10 microns are heated in an ammonia atmosphere to about 350°-600°C at a rate of temperature rise of up to about 5,000°C/hr. to produce...
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3720741 |
MELT SPINNING PROCESS
A low stress spinning process wherein disruption of low viscosity streams due to the viscous drag forces imposed upon the extruding body is minimized by maintaining the propagation velocity of...
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3668059 |
HIGH MODULUS BORON NITRIDE FIBERS
Boric oxide fibers having a maximum diameter of about 10 microns are heated in an ammonia atmosphere under such conditions as to produce partially nitrided fibers consisting essentially of B, N, O...
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