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8029752 |
Approach in controlling DSP scale in bayer process
The invention provides a method of controlling silica in the liquor circuit of the Bayer process. The method involves addition of a promoter material to enhance the precipitation of DSP and...
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7976799 |
Process for removal of aluminum oxides from aqueous media
The present invention relates to the use of lithium salts and/or magnesium salts for the precipitation of aluminum oxides present in aqueous media.
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7968067 |
Process for removal of aluminum oxides from aqueous media
The present invention relates to the use of lithium salts and/or magnesium salts for the precipitation of aluminum oxides present in aqueous media.
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7767281 |
Inkjet recording element
The present invention relates to an inkjet recording element showing good dye keeping in time and then good image stability. Said element comprises a support and at least one ink-receiving layer,...
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7666505 |
Synthetic microspheres comprising aluminosilicate and methods of making same
A synthetic microsphere having a low alkali metal oxide content and methods of forming the microsphere and its components are provided. The synthetic microsphere is substantially chemically inert...
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7270704 |
Mixture for fabrication of fireproof high-strength spherical granules and the method of their manufacture
The inventive method for producing refractory high-strength spherical granules consists in separately presintering kaolin and bauxite in a rotational furnace, jointly sintering said components in...
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6627165 |
Process for upgrading a titaniferous material containing silica
A process for upgrading of titaniferous material containing silica, including pretreating the titaniferous material by alkaline leaching to precipitate the silica as an aluminosilicate which is...
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6528028 |
Process for treating bauxite in which a desilication product and an insoluble residure are separately precipitated
A process in which alumina is extracted from bauxite with an aqueous alkali solution, and a desilication product is precipitated such that the product is not contained in a bauxite residue and does...
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6309615 |
Process for removing reactive silica from a bayer process feedstock
A process for the removal of reactive silica from a feedstock to the digestion step of the Bayer process for the manufacture of alumina, in which (a) the feedstock is contacted with a caustic...
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6241893 |
Water filtration media, apparatus and processes
An amorphous potassium aluminosilicate filtration media which may be mixed with activated carbon filters water to remove oxygen, chlorines, hardness, alkalinity, ammonia, hydrogen, hydrogen...
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6093669 |
Method for selecting raw material for bleaching clay
A process for making a bleaching clay composition useful for purification of oil is disclosed. The process involves controlled acidification of a palygorskite and smectite clay mineral with...
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6051517 |
Modified zeolite membrane
A modified zeolite or molecular sieve membrane for separation of materials on a molecular scale. The modified membrane is fabricated to wholly or partially block regions between zeolite crystals to...
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6043177 |
Modification of zeolite or molecular sieve membranes using atomic layer controlled chemical vapor deposition
A process for modifying surfaces of zeolites and molecular sieve membranes to decrease effective pore size for separation of materials includes atomic layer controlled vapor or liquid deposition....
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6027702 |
Aluminum-based polymer material and use of this material in a photographic product
The invention concerns an inorganic aluminum-based polymer and another element chosen from amongst silicon, titanium and zirconium. The polymer material is obtained from hydrolisable salts and/or...
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5972831 |
Inorganic transparent photocatalytic composition
The present invention concerns a novel photocatalytic composition, a photocatalytic element and a novel method for the photocatalytic treatment of effluents, comprising a gaseous or aqueous...
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5885536 |
Process for alkaline leaching a titaniferous material
A process for alkaline leaching of a titaniferous material containing silica and alumina impurities in which spent leachant is recycled by treating to remove the silica and alumina impurities...
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5883035 |
Mesoporous silicoaluminate products and production thereof by controlled acid extraction of aluminum from calcium bentonite clay
Disclosed is a process of making mesoporous silico-aluminates from calcium bentonite by controlled extraction of octahedral aluminum under mild condition, by acid, preferably phosphoric acid. The...
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5858081 |
Kaolin derivatives
Amorphous derivatives of kaolin group minerals characterized by high specific surfaces and/or high cation exchange capacities and a 27 AL MAS NMR spectrum having a dominant peak at about 55 ppm...
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5843861 |
Process for the synthesis of kaolin clays having varying morphological properties
Substantially crystalline kaolin clays having varying morphological properties are produced by the hydrothermal treatment, in an acidic environment, of substantially amorphous calcined kaolin clay.
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5830818 |
Process for the microwave beneficiation of discolored kaolin clay materials
Kaolin clay materials containing discoloring impurities can be beneficiated by microwave irradiation in the presence of water and a polyprotic acid component to produce a beneficiated kaolin clay...
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5827362 |
Modified organoclays
The invention provides a range of modified organoclays comprising intercalated moieties to provide an effective mechanism for attracting organic compounds into the interlamellar spaces in close...
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5783511 |
Process for selecting raw material and making a bleaching clay
A process for making a bleaching clay composition useful for purification of oil is disclosed. The process of involves controlled acidification of a palygorskite--smectite clay mineral with...
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5685899 |
Process for conditioning kaolin clays prior to removing impurities
Kaolin clays are conditioned for the removal of colored titaniferous impurities by (A) first mixing the kaolin clay with a collector to condition the impurities, in the absence of a dispersant, but...
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5685900 |
Method for beneficiating discolored kaolin to produce high brightness coating clay
A method for beneficiating a low brightness fine particle size discolored kaolin crude to produce a high brightness coating clay. By combining the two beneficiating techniques of selective...
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5674315 |
Process for preparing a meta-kaolin white pigment from kaolinite
A fluidized bed reactor is supplied with fuel, oxygen-containing gas, and kaolinite, which contains water of crystallization. At least 80% by weight of the kaolinite have particle sizes in the...
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5625054 |
DNA purification by solid phase extraction using fluorinated celite
The present invention relates to fluorinated surfaces which exhibit sufficient hydrophilicity and sufficient electropositivity to bind DNA from a suspension containing DNA and permit elution of the...
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5591256 |
High performance synthetic alkali metal alumino-silicate, methods and uses, compositions and high solids reaction methods of their preparation
Sodium alumino-silicates are produced by silicate/clay reactions under hydrothermal conditions with increased solids during processing while still producing structural materials characterized by...
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5573582 |
Process for preparing fine-particulate metal hydroxide comprising aluminum hydroxide and metal oxide comprising aluminum oxide
The present invention discloses a process for preparing a fine-particulate metal hydroxide comprising aluminum hydroxide as a major component which comprises continuously supplying water and a...
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5457272 |
Method for capturing ecologically harmful substances from material polluted with such substances
A method is described for capturing ecologically harmful substances, both of organic and inorganic nature, by absorbing these substances on a zeolite or on a swellable, layered clay which has been...
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5364797 |
Sensor device containing mesoporous crystalline material
A sensor device includes ultra-large pore crystalline material M41S as a selective detecting element, and a measuring element for quantifying physical, chemical or biological events which occur...
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5364823 |
Method for manufacturing inorganic porous layered member
This invention relates to a method for manufacturing an inorganic porous layered member which can maintain a sufficient distance between layers to show a high degree of heat insulating properties....
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5223235 |
Synthetic alkali metal alumino-silicates compounds and their methods of preparation
A family of novel and unique synthetic alkali metal alumino-silicates (SAMS) are produced by the hydrothermal reaction between kaolin and alkali metal silicates. The integrated composition of the...
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4854971 |
Clay composition
There is disclosed a method for improving the rheological properties of a clay mineral which, when dispersed with water, either releases into solution or retains on its surface multivalent cations,...
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4847075 |
Hydrated aluminum silicate adsorbent supporting reductive substance
An absorbent prepared by supporting an organic or inorganic reductive substance on hydrated aluminum silicate is useful as a pharmaceutical or as an absorbent for precious metal complexes such as...
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4836954 |
Fluorinated phyllosilicate and method
There is disclosed a fluorinated phyllosilicate material and method of producing such material. The material has fluoride ions chemically bonded to a natural phyllosilicate in part at least by...
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4661464 |
Stabilized pillared layered clay, process for its production
A stabilized pillared layered clay comprising a layered clay pillared by the residue of a material which has reacted with hydroxyl groups associated with the clay structure and its preparation by...
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4604369 |
Method of beneficiating kaolin clay utilizing ammonium salts
A method of enhancing the brightness (beneficiating) of kaolin clays by removing titanium impurities is disclosed. The claimed method is a selective flocculation process wherein clay solids are...
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4500350 |
Disintegration of chromites
In the disintegration of a chromite or chromium-containing residue, wherein the chromium-containing material is disintegrated with an alkaline compound in the presence of oxygen and a diluent at a...
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4483830 |
Production of alumina
A process for recovery of alumina and soda from materials containing sodium aluminosilicates, such as red mud and desilication products, comprises treating said materials with lime at elevated...
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4436832 |
Process for the preparation of bridged clays, clays prepared by said process, and uses for said clays
In a process for the preparation of bridged clays, a mixture of an aqueous solution of at least one metal hydroxide and aqueous clay suspension is subjected to dialysis. Said clays are suited for...
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4299807 |
Methods of producing kaolin pigments
A method for producing kaolin pigments of improved coated brightness and opacity is provided in which kaolin is degritted, heated to the level of substantially minimum brightness and then leached....
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4255276 |
Silicatic complexing agent for alkaline earth ions and method of preparing same
A silicatic complexing agent for alkaline earth ions comprising an acid activated mineral of the montmorillonite-beidellite series, said mineral charged with an alkali metal.
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4237031 |
Crystallized silica-alumina cogel and catalyst employing the same
This invention relates silica-alumina cogels containing a crystalline phase and to hydrothermally treatment of silica-alumina cogels resulting in generation of a crystalline phase in the gel and...
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4237104 |
Flue gas treatment for sulfur dioxide removal
A process for removing, by absorption, sulfur dioxide from a gaseous mixture such as a flue gas by scrubbing said mixture with an aqueous scrubbing liquor to which a solution of an alkaline reagent...
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4210629 |
Flue gas treatment
A process for removing, by absorption, sulfur dioxide from a gaseous mixture such as a flue gas by scrubbing said mixture with an aqueous scrubbing solution containing an alkaline reagent such as...
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4190632 |
Process for treating air-borne (metallic) dusts containing silicon dioxide to form precipitated silicic acids and silicates
There is provided a process for treating air-borne dust containing silicon dioxide in order to form a silicic acid or a silicate. The air-borne dust is dissolved in an alkali metal hydroxide...
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4112046 |
Disintegration of silica-rich chromite
In the disintegration of at least one chromium source selected from the group consisting of a SiO2 -containing chromite and a chromium-containing residue with an alkali compound at a temperature...
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4088732 |
Improved method of beneficiating clay by removal of titanium and iron impurities
A method of beneficiating kaolin clay by the addition of non-dispersing neutral salts to assist in the removal of discolored impurities, such as titanium and iron bearing minerals from a clay...
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4077874 |
Method removing radioactivity from kaolin
A method of reducing the radioactivity found in naturally occurring kaolins to about 40% below its native value, and the leachable radiogenic components to less than 20%. This reduction is achieved...
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4001028 |
Method of preparing crack-free monolithic polycrystalline cordierite substrates
Cracking of large monolithic cordierite segments and in particular monolithic honeycombed substrates having a matrix of thin walls forming a multiplicity of open ended cells extending from one end...
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