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| Number | Title | Issue Date |
| 7771680 | Process for the production of titanium dioxide using aqueous fluoride A process is described for the production of titanium dioxide by the treatment with ammonium fluoride of titanium ores containing iron; the process comprises the following steps: (a) the titanium ore containing iron is reacted with an aqueous NH4F and/or ... | 08/10/2010 |
| 7704470 | Removal of contaminants from by-product acids The present invention is drawn to a method for removing colloidal titanium dioxide and titanium oxychloride from by-product hydrochloric acid. The method includes adding phosphate ion source and quaternary amine to the by-product acid to cause the titanium dioxide a... | 04/27/2010 |
| 7429364 | Production of titania A sulfate process for producing titania from a titaniferous material is disclosed. The process includes leaching the titaniferous material and producing a leach liquor, precipitating iron sulfate from the leach liquor, solvent extraction of titanyl sulfate from leac... | 09/30/2008 |
| 7326390 | Production of titania A sulfate process for producing titania from titaniferous material is disclosed. The process includes precipitating titanyl sulfate from leach liquors containing acidic solutions of titanyl sulfate. The process is characterised by: (a) multiple stage leaching to pro... | 02/05/2008 |
| 7247283 | Method of preparing a titanium and zirconium-based oxide, the oxides thus obtained and the use of same as catalysts The invention concerns a process for preparing an oxide based on zirconium and titanium in which a liquid medium containing a zirconium compound and a titanium compound is formed; said medium is then heated; the precipitate obtained from the end of the preceding ste... | 07/24/2007 |
| 7241437 | Zirconia particles Zirconia particles, methods of making zirconia particles, composite materials that contain the zirconia particles, methods of making the composite materials, and zirconia sols that contain the zirconia particles are described. The zirconia particles are substantiall... | 07/10/2007 |
| 7238331 | Process for producing nano-powders and powders of nano-particle loose aggregate The present invention discloses a process for producing nano-powders and powders of nano-particle loose aggregate, which includes: (a) providing at least two reactant solutions A and B capable of rapidly reacting to form deposits; (b) supplying the at least two reac... | 07/03/2007 |
| 7211230 | Process for producing nanometer grade powders The present invention discloses a process for producing nanometer powders, comprising the following steps: (a) providing reactant solution A and reactant solution B that can rapidly react to form precipitate; (b) continuously adding said solution A and solution B in... | 05/01/2007 |
| 7179441 | Method for preparing barium-titanate based powder The present invention relates to a method for preparing barium titanate based powder. More particularly, the present invention provides a method for preparing barium titanate powder comprising the following steps of precipitation of barium titanyl oxalate (BaTiO(C | 02/20/2007 |
| 7175825 | Method of producing titania solution Titania is dissolved in a hydrogen peroxide solution to produce an amorphous titania gel, then the amorphous titania gel and a hydrogen peroxide solution are mixed together to produce an amorphous titania sol, and then an alkali solution is supplied to the solution ... | 02/13/2007 |
| 7157406 | Catalysts or carriers which consist essentially of monoclinic zirconium dioxide Catalysts or carriers which consist essentially of monoclinic zirconium dioxide are prepared by pecipitation of zirconium salts with ammonia, by adding a zirconyl nitrate or zirconyl chloride solution to an aqueous ammonia solution at a decreasing pH from 14 to 6 an... | 01/02/2007 |
| 7157074 | Fine zirconium oxide powder and method for producing same There are provided a method for producing a fine zirconium oxide powder which has a narrower particle size distribution than that of conventional zirconium oxide powders and which is capable of lowering the starting temperature in the sintering reaction of a reactan... | 01/02/2007 |
| 7157072 | Cathode composition for lithium batteries and method of preparing the same Provided is a cathode composition for lithium secondary battery that includes a lithium-chromium-titanium-manganese oxide that has the formula Li[Li(1-x)/3CrxTi(2/3)yMn2(1-x-y)/3]O2 where 0≦x≦0.3, 0≦y≦0.... | 01/02/2007 |
| 7147914 | Full dull polyamide 6 yarn, and a process of preparing for the same The present invention relates to a full dull polyamide 6 yarn and a process for preparing the same. The yarn of this invention contains 1.5 to 2.5% by weight of titanium dioxide relative to the weight of the yarn, has 35 to 95 titanium dioxide particles having a maj... | 12/12/2006 |
| 7138357 | Photocatalyst containing titanium oxide, the production method and use of the same The invention relates to a photocatalyst containing titanium dioxide, to a method for using it and to its application. A sulphurous titanium dioxide hydrate precipitate is precipitated from an acid titanium oxysulphate solution at a temperature below the boiling poi... | 11/21/2006 |
| 7135156 | Method for processing a zirconium oxide composition in crystalline form Methods of producing zirconium oxide compositions and using same are provided. The zirconium oxide compositions in crystalline form can be prepared by a synthetic process wherein the hydrolysis of zirconyl chloride and particle formation can be achieved simultaneous... | 11/14/2006 |
| 7132093 | Mesoporous mixed oxide materials as a new class of SOresistant catalysts for hydrocarbon oxidation The oxide materials are of the class of ternary mesoporous mixed oxide materials including lanthanum, a metal M selected from the group consisting of Cr, Mn, Fe, Co, Ni, Cu and Zn, and zirconium or cerium such a mesoporous La—Co—Zr mixed oxide material designate... | 11/07/2006 |
| 7122168 | Shape anisotropic metal oxide nanoparticles and synthetic method thereof In a metal oxide nanoparticle and a synthetic method thereof, and in particular to maghemite (γ-Fe2O3) nanoparticles usable as a superhigh density magnetic recording substance by having good shape anisotropy and magnetic characteristics, hemat... | 10/17/2006 |
| 7101519 | Zirconium basic carbonate and methods of making the same Methods of making zirconium basic carbonate are further described which involve titrating an aqueous slurry of sodium zirconium carbonate to a pH of from about 3.5 to about 4.0 with an acidic agent wherein the sodium zirconium carbonate has a moisture content of fro... | 09/05/2006 |
| 7063824 | Beneficiation of zircon This invention relates to a process of treating a zirconium containing product such as zircon. The process comprises providing an alkali fusion decomposed zircon product (AFDZ) formed from reading zircon with a source of alkali metal at elevated temperatures, and tr... | 06/20/2006 |
| 7049347 | Method for making fine and ultrafine spherical particles of zirconium titanate and other mixed metal oxide systems Disclosed is a method for making amorphous spherical particles of zirconium titanate and crystalline spherical particles of zirconium titanate comprising the steps of mixing an aqueous solution of zirconium salt and an aqueous solution of titanium salt into a mixed ... | 05/23/2006 |
| 7037583 | Functionalized zirconium oxide particles Metal oxide nanoparticles having at least some surface acid sites functionalized with an adhesion promoter and at least some surface acid sites functionalized with a coupling agent. The nanoparticles are useful in forming composites comprising photopolymerizable mat... | 05/02/2006 |
| 6991678 | Process for preparing microporous crystalline titanium silicate A process for the preparation of crystalline microporous titanium silicates using ethylsilicate-40 and titanium peroxide as silicon and titanium sources respectively is described. The process permits a significant decrease in the production cost of titanium silicate... | 01/31/2006 |
| 6806295 | Sol-gel processing with inorganic metal salt precursors Methods for sol-gel processing that generally involve mixing together an inorganic metal salt, water, and a water miscible alcohol or other organic solvent, at room temperature with a macromolecular dispersant material, such as hydroxypropyl cellulose (HPC) added. T... | 10/19/2004 |
| 6800260 | Processes for treating iron-containing waste streams Processes for treating iron containing waste streams are provided. According to these processes, metal-containing compounds, particularly iron oxides are produced. These methods may, for example, be used in the processing of the waste streams from the chlorination o... | 10/05/2004 |
| 6733559 | Method of reducing the availability of heavy metals in plants and the use of cross linked poly(meth)acrylates in said method A process for reducing plant availability of heavy metals in substrates such as soils wherein the substrates treated with cross-linked polymethacrylates. The poly (meth)acrylates can be worked into the soils. ... | 05/11/2004 |
| 6713038 | TiO2 compounds obtained from a high silica content ore A titanium dioxide compound was isolated from a rare type of naturally occurring ore. Processes for efficiently isolating and obtaining these TiO2 compounds, as well as methods for using them have been developed. These TiO2 compounds may be use... | 03/30/2004 |
| 6685761 | Method for producing beneficiated titanium oxides The invention is a method and apparatus for producing beneficiated titanium oxides using a modified rotary hearth furnace, that is a finisher-hearth-melter (FHM) furnace. In the method the refractory surface of the hearth is coated with carbonaceous heart... | 02/03/2004 |
| 6610135 | Titanium-containing finely divided particulate material, aqueous sol composition and coating liquid containing same, process for producing same, and shaped article having film thereof A titanium-containing finely divided particulate material, characterized by exhibiting a light transmittance of at least 85% as measured at a wavelength of 450-700 nm for a thickness of 10 mm on an aqueous liquid containing the titanium-containing materia... | 08/26/2003 |
| 6471743 | Methods for leaching of ores Disclosed and claimed are efficient methods for leaching minerals from ores using an acidic solution such as sulfuric acid. Additional factors which can improve mineral recovery include the use of an alkali metal halide, grinding the ore, addition of a ca... | 10/29/2002 |
| 6468483 | Process for treating alumina-bearing ores to recover metal values therefrom A method for processing alumina-bearing ores such as bauxite to recover iron, aluminum, silicon and titanium metal values therefrom the method comprising the steps of adding the alumina-bearing ores to a digester containing an acid to provide a mixture of... | 10/22/2002 |
| 6375923 | Processing titaniferous ore to titanium dioxide pigment A hydrometallurgical process is provided for producing pigment grade TiO2 from titaniferous mineral ores, and in particular from ilmenite ore. The ore is leached with a hydrochloric acid, preferably a recycled solution at high hydrochloric acid... | 04/23/2002 |
| 6358484 | Process for recovery of zirconium basic sulfate A process for providing a zirconium basic sulfate includes providing a zirconium oxychloride solution, and then dialyzing the solution against a liquid selected from water and an aqueous solution across at least one anion exchange membrane to provide a di... | 03/19/2002 |
| 6306195 | Process for the preparation of high grade synthetic rutile and pig iron The present invention relates to an improved process for the preparation of high grade synthetic rutile from ilmenite with pig iron as a by-product. The process comprises subjecting ilmenite to reduction with coal, cooling and removing unreacted coal to o... | 10/23/2001 |
| 6248302 | Process for treating red mud to recover metal values therefrom A method for processing red mud to recover iron, aluminum, silicon and titanium metal values therefrom the method comprising the steps of adding the red mud to a digester containing an acid to provide a mixture of acid and red mud and heating the mixture ... | 06/19/2001 |
| 6214301 | Hafnium radioisotope recovery from irradiated tantalum Hafnium is recovered from irradiated tantalum by: (a) contacting the irradiated tantalum with at least one acid to obtain a solution of dissolved tantalum; (b) combining an aqueous solution of a calcium compound with the solution of dissolved tantalum to ... | 04/10/2001 |
| 5945035 | Conductive pigments The invention relates to electrically conductive pigments which as a conductive layer on a platelet-shaped or needle-shaped substrate have a niobium- and/or tantalum-doped tin oxide or titanium dioxide layer.... | 08/31/1999 |
| 5656175 | Recovery of metal oxides from a slurry A process for recovering metal oxides from waste water using anionic and cationic polymeric emulsions is disclosed. The treated metal oxides may then be recovered using a clarification step. Steps requiring the adjustment of pH based on the use of acids a... | 08/12/1997 |
| 5470550 | Zirconium sulfate precipitation Zirconium containing less than about 400 ppm aluminum/zirconium is produced by precipitating zirconium sulfate from an aqueous stream containing from 0.5 M to 2 M zirconium oxychloride and contaminated with from 1000 to 3000 ppm aluminum/zirconium and hav... | 11/28/1995 |
| 5425927 | Hafnium dioxide purification Hafnium dioxide contaminated with 0.1 to 1 weight percent uranium dioxide is contacted with an aqueous acid such as nitric acid, hydrochloric acid, sulfuric acid and mixtures thereof to leach the uranium dioxide from the hafnium dioxide, thereby producing... | 06/20/1995 |
