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Calcium Sulfate patents

      

This page is updated frequently with new Calcium Sulfate-related patent applications.




 High strength synthetic bone for bone replacement for increasing ompressive strength and facilitating blood circulation, and manufacturing method therefor patent thumbnailHigh strength synthetic bone for bone replacement for increasing ompressive strength and facilitating blood circulation, and manufacturing method therefor
The present invention relates to a high strength synthetic bone for bone replacement for increasing compressive strength and facilitating blood circulation, and a manufacturing method therefor, and provides the high strength synthetic bone for bone replacement in which calcium sulfate hemihydrate (csh) and nacl, in a particle state, penetrate into the pores of a porous inorganic material such as β-tricalcium phosphate (β-tcp) and a wet treatment is performed on the same such that the csh penetrated into the pores is combined with moisture so as to form a hydrated crystal of calcium sulfate dihydrate (csd) to expand the volume thereof in the pores, thereby preventing the escape of a filler by physical force.. .
Ossein Co., Ltd.


 Drilling fluid and  drilling in coal-containing formations patent thumbnailDrilling fluid and drilling in coal-containing formations
A drilling fluid and method for drilling in a coal containing formation with a mixed metal-viscosified drilling fluid including at least 0.05% calcium sulfate.. .
Canadian Energy Services L.p.


 Method for purifying raw phosphoric acid (e.g. mga acid) by adding ashes originating from waste incineration plants, comprising the production of pure phosphoric acid, calcium sulfate, water-soluble calcium hydrogen phosphates and metal salt solution patent thumbnailMethod for purifying raw phosphoric acid (e.g. mga acid) by adding ashes originating from waste incineration plants, comprising the production of pure phosphoric acid, calcium sulfate, water-soluble calcium hydrogen phosphates and metal salt solution
The present invention relates to a method for purifying raw phosphoric acid by adding ashes originating from waste incineration plants, as well as calcium hydroxide and at least one sulfide, and by wet-chemical digestion for obtaining (producing) calcium sulfate, pure phosphoric acid, metal salt solution and/or calcium hydrogen phosphates (e.g. Triple superphosphate)..
Remondis Aqua Gmbh & Co. Kg


 Quick-drying building material composition based on a mineral hybrid binder patent thumbnailQuick-drying building material composition based on a mineral hybrid binder
A quick-drying gypsum composition, in particular for use as gypsum filling compound and for the production of floor coverings, wherein the gypsum composition contains 20 to 70% of a mixture of calcium aluminate and calcium sulfate hemihydrate and/or anhydrite and/or calcium sulfate dihydrate as hydraulic binders and 30 to 80% by weight of fillers, and wherein the weight ratio of calcium aluminate to calcium sulfate hemihydrate and/or anhydrite and/or calcium sulfate dihydrate binders lies in the range from 1:1 to 1:5. Gypsum compositions of this type are characterized by a particularly beneficial shrinkage behavior, such that stresses and cracks in the dried composition can be avoided.
Sika Technology Ag


 Calcium sulfate composition comprising an additive patent thumbnailCalcium sulfate composition comprising an additive
The invention relates to a composition comprising at least 10 wt. % of a binder based on calcium sulfate and 0.005 to 5 wt.
Basf Se


 Struvite-k and syngenite composition for use in building materials patent thumbnailStruvite-k and syngenite composition for use in building materials
A composition and process for the manufacture thereof for use in a hybrid building material comprising at least in part syngenite (k2ca(so4)2.h2o) and struvite-k (kmgpo4.6h2o). Specified constituents, including magnesium oxide (mgo), monopotassium phosphate (mkp) and stucco (calcium sulfate hemihydrate) are mixed in predetermined ratios and the reaction proceeds through multiple phases reactions which at times are proceeding simultaneously and in parallel and reaction may even compete with each other for reagents if the struvite-k reaction is not buffered to slow down the reaction rate).
Certainteed Gypsum, Inc.


 Coated building panels and articles containing calcium sulfate hemihydrate patent thumbnailCoated building panels and articles containing calcium sulfate hemihydrate
A method of finishing an interior wall includes the steps of preparing a substrate of building panels comprising gypsum, cement or combinations thereof, said substrate having a surface, followed by applying a coating to the substrate, said coating comprising 1-30% by weight of a latex emulsion binder, 30-80% by weight calcium sulfate hemihydrate, up to about 8% by weight of a set inhibiting agent and 20-60% by weight water.. .
United States Gypsum Company


 Multiphasic bone graft substitute material patent thumbnailMultiphasic bone graft substitute material
The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution, comprising i) a calcium sulfate hemihydrate powder, wherein the calcium sulfate hemihydrate is present at a concentration of at least about 50 weight percent based on the total weight of the particulate composition; ii) a monocalcium phosphate monohydrate powder; iii) a non-porous β-tricalcium phosphate powder; and iv) a porous β-tricalcium phosphate powder. Bone graft substitute cements made therefrom, a bone graft substitute kit comprising the particulate composition, methods of making and using the particulate composition, and articles made from the bone graft substitute cement are also provided..
Agnovos Healthcare, Llc


 Cementitious patch compositions and methods patent thumbnailCementitious patch compositions and methods
A cementitious hydrating patch composition is provided with improved strength and abrasion resistance. The patch comprises portland cement in the amount from 2% to 10%, calcium sulfate hemihydrate in the amount from 2% to 30%, gypsum in the amount from 0% to 15%, calcium aluminate cement in the amount from 15% to 40%, calcium carbonate in the amount from 0% to 40%, at least one filler in the amount from 1% to 30%; and at least one binder in the amount from 10% to 40%, wherein all amounts are based on dry weight of the composition.
United States Gypsum Company


 Multiphasic bone graft substitute patent thumbnailMultiphasic bone graft substitute
The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution, comprising i) a calcium sulfate hemihydrate powder, wherein the calcium sulfate hemihydrate is present at a concentration of at least about 50 weight percent based on the total weight of the particulate composition; ii) a monocalcium phosphate monohydrate powder; iii) a non-porous β-tricalcium phosphate powder; and iv) a porous β-tricalcium phosphate powder. Bone graft substitute cements made therefrom, a bone graft substitute kit comprising the particulate composition, methods of making and using the particulate composition, and articles made from the bone graft substitute cement are also provided..
Wright Medical Technology, Inc.


Liquid pothole filler composition and method

A two component liquid pothole filler system comprises an anionic aqueous asphalt and chloroprene emulsion liquid component, which is mixed in situ with a solid component comprising crumb rubber, and in a preferable variation, a powdered mineral material, which is preferably calcined clay powder. The solid component also preferably includes a catalytic quantity of an activator, preferably a hydrous calcium sulfate activator, or alternatively, the activator may be added to the mix at the time of in situ mixing.

Method for strengthening 3d printed components

A method of strengthening printed components created by a three-dimensional printing technique utilizes cynoacrylate adhesives. The component is first printed in successive layers of calcium sulfate or similar materials on a three-dimensional printer.
Barristo Enterprises Inc.

Struvite-k and syngenite composition for use in building materials

A composition and process for manufacture thereof used in hybrid inventive building materials comprising syngenite (k2ca(so4)2.h2o) and struvite-k (kmgpo4.6h2o). Starting constituents include magnesium oxide (mgo), monopotassium phosphate (mkp) and stucco (calcium sulfate hemihydrate), mixed in predetermined ratios, cause reactions to proceed through multiple phases, which reactions variously are proceeding simultaneously and in parallel.
Certainteed Gypsum, Inc.

Dimensionally stable geopolymer composition and method

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar, patching materials for road repairs and other repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally activated aluminosilicate mineral, calcium sulfoaluminate cement, a calcium sulfate and a chemical activator with water..
United States Gypsum Company

Calcium sulfoaluminate composite binders

The present invention relates to composite binders containing calcium sulfoaluminate cement and supplementary cementitious material, wherein a weight ratio of calcium sulfate to the sum of ye'elimite, aluminates and ferrites (r$/(y+a+f)) ranges from 0.5 to 0.85, to a method of manufacturing them comprising the steps: a) providing at least one calcium sulfoaluminate cement b) providing at least one supplementary cementitious material c) mixing 10 to 90% by weight calcium sulfoaluminate cement(s) with 10 to 90% by weight supplementary cementitious material(s), and to their use for making hydraulically setting building materials and special construction chemical compositions.. .
Heidelbergcement Ag

Scale detection device and concentrating device, and water reclamation processing treatment system

A scale detection device of a concentrating device comprises: a reverse osmosis membrane device 13 that is a concentrating device including a reverse osmosis membrane 13a, which is a filtering membrane for concentrating salt in a water to be treated 11, containing at least calcium sulfate to obtain reclaimed water 12; and a scale detection unit 15 disposed in a branched line l14 branched from a concentrated water line l13 discharging concentrated water 14 having a high concentration of salt, the scale detection unit further concentrating the salt in the concentrated water 14 to obtain reclaimed water for detection 16, and including a detection membrane 15a detecting the absence or presence of scale component deposition in the concentrated water 14.. .
Mitsubishi Heavy Industries, Ltd.

Dimensionally stable geopolymer composition and method

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar and repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally activated aluminosilicate mineral, calcium aluminate cement, a calcium sulfate and a chemical activator with water.
United States Gypsum Company

Multifunctional foaming composition with wettability modifying, corrosion inhibitory and mineral scale inhibitory/dispersants properties for high temperature and ultra high salinity

The present invention is related to the obtaining and using of multifunctional foaming compositions with wettability modifying, corrosion inhibitory and inhibitory/dispersants mineral scale properties with high stability in environments of high temperature, high pressure and tolerance to high concentrations of divalent ions such as calcium, magnesium, strontium and barium. The multifunctional foaming compositions are obtained from the combination of supramolecular complexes resulting from interactions of alkyl amido propyl hydroxysultaines and/or alkyl amido propyl betaines and/or alkyl hydroxysultaines and/or alkyl betaines and anionic surfactant of type alkyl hydroxyl sodium sulfonate and alkenyl sulphonates of sodium, with cationic surfactants as tetra-alkyl ammonium halides and copolymers derivatives of itaconic acid/sodium vinyl sulfonate and/or terpolymers derived from itaconic acid/sodium vinyl sulphonate/aconitic acid.

Combination of ternary binders with aqueous epoxy resin system

A multi-component composition is described that includes: a) a binder component (a) including at least one epoxy resin, b) a hardener component (b) including at least one amine compound as an amine hardener, and c) a solid component (c) including a hydraulic inorganic binder, wherein the hydraulic inorganic binder is a ternary binder composed of aluminous cement, calcium sulfate, and optionally portland cement, wherein the solid component (c) includes 2 to 30 wt % aluminous cement, 1 to 16 wt % calcium sulfate, and 0 to 20 wt % portland cement. The multi-component composition is suitable in particular as a self-leveling floor-leveling compound for a floor covering or as a mortar..
Sika Technology Ag

Hematite manufacturing process and hematite manufactured by same

Magnesium oxide produced by a process is used as a neutralizing agent for preliminary neutralization treatment of a leached slurry obtained by leaching a nickel oxide ore at a high temperature and pressure with sulfuric acid added. A neutralizing agent is added to a leachate, obtained by leaching a nickel oxide ore, to separate impurities, and a sulfurizing agent is added to the resulting neutralized solution to obtain nickel and cobalt sulfides, followed by separating the sulfurized solution; discharge waste water, obtained by adding a neutralizing agent to the sulfurized solution to separate aluminum and manganese, is concentrated to precipitate and separate calcium contained in the discharge waste water as calcium sulfate; the resulting solution is concentrated to precipitate magnesium in the solution as magnesium sulfate; the magnesium sulfate is roasted with a reducing agent to obtain magnesium oxide and a sulfurous gas; and the magnesium oxide is washed..
Sumitomo Metal Mining Co., Ltd.

Compositions for removing hydrocarbons and halogenated hydrocarbons from contaminated environments

A composition for in situ remediation of soil and groundwater contaminated with hydrocarbons. The composition includes an adsorbent, such as activated carbon, capable of adsorbing the hydrocarbons.
Remediation Products, Inc.

Microwave heating for gypsum manufacturing processes

Methods of making calcium sulfate whiskers are provided. In one aspect, a method includes autoclaving a slurry of calcium sulfate hemihydrate and water to form calcium sulfate hemihydrate whiskers in water and microwaving the whiskers to dewater them, wherein the microwaving is effective to prevent a majority of the whiskers from reverting to a dihydrate form.
Georgia-pacific Gypsum Llc

Water treatment system, water treatment method, cooling facility and power generating facility

A water treatment system provided with: a first scale inhibitor-supplying unit which supplies a scale inhibitor to a blowdown water, the blowdown water being water to be treated that is generated in a cooling tower and contains at least a salt and silica; a first ph-adjusting unit which adjusts the ph of the blowdown water, to which the scale inhibitor has been supplied using a ph adjusting agent; a first desalinating apparatus which is provided downstream of the first ph-adjusting unit, removes the salt in the blowdown water, and separates the water into a first reclaimed water and a first concentrated water; and a first crystallizing unit which is provided downstream of the first desalinating apparatus and has a first crystallizing tank for calcium sulfate from the first concentrated water and a first seed crystal-supplying unit for supplying calcium sulfate seed crystals of calcium sulfate to the first crystallizing tank.. .
Mitsubishi Heavy Industries, Ltd.

Wastewater treatment process

A wastewater treatment process capable of selectively and efficiently separating and removing a manganese precipitate with high purity from sulfuric acid-acidic wastewater containing aluminum, magnesium, and manganese. In the wastewater treatment for a sulfuric acid-acidic wastewater containing aluminum, magnesium, and manganese, a magnesium oxide is used for part or all of the neutralizing agent to be added, the magnesium oxide is produced through the following steps (1) to (4): (1) effluent wastewater obtained by separating aluminum and manganese from sulfuric acid-acidic wastewater is concentrated, and calcium contained in the effluent wastewater is precipitated as a calcium sulfate; (2) the solution obtained in (1) is further concentrated, and magnesium is precipitated and separated as a magnesium sulfate; (3) the magnesium sulfate separated in (2) is roasted together with a reducing agent to obtain a magnesium oxide and sulfurous acid gas; and (4) the magnesium oxide obtained in (3) is washed..
Sumitomo Metal Mining Co., Ltd.

Building products composites and methods

Methods of manufacturing composites are provided, including combining dihydrate calcium sulfate whiskers, hemihydrate calcium sulfate stucco, and water to form a slurry, and setting the slurry to form a composite having a natural porosity of about 60 volume percent or greater. Composites are also provided, including dihydrate calcium sulfate whiskers and dihydrate calcium sulfate crystals, and having a natural porosity of about 60 volume percent or greater..

Method for producing cement

A method for producing calcium sulfoaluminate cement comprises the steps of providing thermal energy by combustion of sulphur and/or a sulphur-containing compound, reacting sulphur oxides produced by combustion of the sulphur and/or sulphur-containing compound with a mixture of calcium oxide and/or carbonate, and alumina and/or its hydrates to form a sulphur-containing mixture, heating the sulphur-containing mixture using the thermal energy to produce a clinker, and reacting remaining sulphur oxides produced by combustion of the sulphur and/or sulphur-containing compound with lime. The sulphur and/or sulphur-containing compound preferably comprises elemental sulphur, sour crude, sour gas or calcium sulfate..



Calcium Sulfate topics:
  • Calcium Sulfate
  • Calcium Carbonate
  • Carbon Dioxide
  • Calcium Hydroxide
  • Geopolymer Cement
  • Geopolymer
  • Touch Screen
  • Calcium Oxide
  • Calcium Phosphate
  • Zinc Oxide
  • Hemihydrate
  • Carbon Black
  • Aqueous Solution
  • Phosphoric Acid
  • Sulfuric Acid


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    This listing is a sample listing of patent applications related to Calcium Sulfate for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Calcium Sulfate with additional patents listed. Browse our RSS directory or Search for other possible listings.


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