Class 501/114 - And chromium compound

Subclass of Class 501 - Compositions: ceramic
Definition: Subject matter additionally comprising a compound of chromium.
No. of patents: 21
Last issue date: 01/17/2006

Number	Title	Issue Date
6987077	Fired spinel complex oxide and method for preparing the same A fired spinel complex oxide is produced by firing a mixture containing a slag by-produced in chromium refining, a reducer, and a silica-containing material, and is essentially composed of: 29 to 40 percent by weight of Fe2O3; 15 to 20 percent ...	01/17/2006
6660673	Use of particulate materials containing TiO2 in refractory products In order to reduce wear on refractory linings due to corrosion and the infiltration of slags and molten metals, particulate materials containing TiO2 are added to the refractory products consisting of a mixture of aggregates and binding agents....	12/09/2003
5595948	Magnesia-titania refractory and method for manufacturing the same A refractory is disclosed which contains integrally sintered magnesia particles forming the skeleton of the refractory and a mineral phase of magnesium orthotitanate (Mg2 TiO4) formed between the magnesia particles, thus giving an in...	01/21/1997
5322827	Burned refractories with low soluble chromium A burned chrome-containing refractory and method which provides a refractory having less than 5 ppm total soluble chromium. Such product is obtained by adding to the starting mix less than 10 wt. % (often less than 3 wt. %) zirconia, silica, zircon, or mo...	06/21/1994
5096642	Process for producing a high density ceramic of perovskite A process for producing a high density ceramic of perovskite represented by the formula: ABO3 wherein A is one or more metal elements coordinated with 12 oxygen atoms, and B is one or more metal elements coordinated with 6 oxygen atoms, which c...	03/17/1992
4999325	Rebonded fused brick A rebonded, fused brick resulting from burning a mix consisting essentially of a fused magnesite chrome grain, a fused chrome-magnesite grain or mixtures thereof, and a chrome ore having a Cr2 O3 /(Al2 O3 +Fe	03/12/1991
4775648	Heavy ceramic shaped material, process for the production thereof and the use thereof Heavy ceramic shaped material with a content of at least one of the components magnesia, fired dolomite, chromite and spinel, characterized by a microcrack system substantially homogeneously distributed in the shaped material structure, as well as process...	10/04/1988
4751208	Method of producing a spinel type ceramic sintered body A spinel type ceramic sintered body is provided starting from a chromiferous slag which is a waste discharged from sodium chromate production, said sintered body being reproducable by selecting the mole ratios of R2 O/MgO to 0.9-2.0 and SiO	06/14/1988
4574119	Chrome-magnesite refractories and method of preparation A refractory brick made from a size graded batch comprising 20-30 weight percent magnesite containing less than 0.8 weight percent silica, and the balance a chrome ore. The chrome ore includes oxides of chromium, aluminum and iron wherein the ratio betwee...	03/04/1986
4522926	Aluminum resistant refractory composition A refractory composition for use in contact with molten aluminum alloys containing a refractory aggregate, a binder and 9Al2 O3.2B.sub.2 O3. The aluminum borate may be of the type produced as a by-product in the production...	06/11/1985
4343989	Magnesium oxide based heat storage device A cast magnesium oxide based structure is utilized as a heat storage material. In preferred embodiments, the magnesium oxide heat storage material is cast directly about a source of heat. In another embodiment, a block of cast magnesium oxide based heat s...	08/10/1982
4315992	Carbon-containing and uncarbonized sinter magnesia refractories A refractory brick or mass is comprised of 60 to 97% of sinter magnesia, an amount of a carbon-containing substance producing a residual content of 2 to 30% of carbon in an end product after carbonization, as determined by ASTM norm C 831-76, and 1 to 20%...	02/16/1982
4287167	Novel harzburgite and preparation thereof There is provided a novel harzburgite of the formula Pyx Ol.sub.(1-x) where x is a decimal number of from 0.001 to 0.4, Py is an abbreviation for pyroxene, and Ol is an abbreviation for olivine having a total iron oxide content of less than 5% ...	09/01/1981
4141743	Thermal spray powdered composite A composite powder suitable for use in thermal spray applications as a wear and/or corrosion resistant coating comprising chromic oxide, magnesium oxide, iron oxide, titanium oxide, and aluminum oxide....	02/27/1979
4126478	Production of periclase grain A high purity periclase grain having less than 8 volume % porosity, less than 2% SiO2, and a CaO:SiO2 weight ratio not over 1.0 is produced in a single fire process by mixing from 0.5 to 1.5% finely divided SiO2 with a mag...	11/21/1978
4115133	Unburnt refractory masses or bricks for metallurgical vessels based on chrome-ore and carbon-containing binder An unburnt refractory mass, which can be in the form of a brick, for use in vessels employed in metallurgical refining consisting essentially of chromium-ore, sintered magnesia and a carbon-containing binder, said mass consisting essentially of: 75 to 95%...	09/19/1978
4107255	Manufacture of improved fused cast refractory Basic fused cast refractory with principal crystal phases of periclase and magnesium-spinel is made by adding nonfused oxidic inorganic grog particles to molten mass of the refractory as it is cast into a mold cavity, thereby resulting in increased modulu...	08/15/1978
4071370	Magnesite-chrome refractory Burned, magnesite-chrome refractory shapes having a lime to silica ratio between about 1.7 and 2.1 to 1, and a chromic oxide to aluminum oxide plus iron oxide ratio in excess of about 1.5 to 1....	01/31/1978
4039343	Improved performance direct bonded basic refractory brick and method of manufacture This invention provides improved high fired direct bonded basic magnesite-chrome refractory shapes, such as brick, characterized by the presence of chromium enriched spinel structures distributed in the matrix and bonding the individual periclase crystals...	08/02/1977
4033778	Process for making magnesia A process for making magnesia wherein a sludge of magnesium hydroxide is simultaneously dewatered and compacted to give a cake of magnesium hydroxide containing at least 67.5% by weight of solids and having a green bulk density of at least 1.15 grams/cc a...	07/05/1977
3989533	Composition for use in forming heat insulating hot top liners and method of making same A composition for use in forming a heat insulating hot top liner which comprises, by weight, 0 to 20% of a pulverized organic fibrous material, 0 to 40% of a pulverized inorganic fibrous material, 50 to 90% of a refractory material and sufficient liquid c...	11/02/1976

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Class 501/114 - And chromium compound