• Synthetic Gypsum from Coal Power Plant Flue Gas | Research ...

    Note that the primary use for FGD Gypsum specified by "United States Patent 7,776,150" is in "cement production", and, keep in mind that would be in addition to the use of other Coal residuals, i.e., Fly Ash, in the making of cement and concrete, both as one of the primary reactants in the chemical synthesis of Portland cement and as an ...

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  • Method of gypsum-concrete mix production

    SUBSTANCE: gypsum concrete products manufacturing method includes batching of alabaster binding material, water, coarse and fine aggregates, their mixing with subsequent formation of products from obtained gypsum concrete mixture, hardening and mechanical treatment of the products' surface.

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  • Portland cement - Wikipedia

    Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, ... and adding 2 to 3 percent of gypsum. Several types of Portland cement are available. The most common, called ordinary Portland cement (OPC), is grey, but white Portland cement is also available. ... In his 1824 cement patent, ...

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  • Additive for gypsum binder, dry construction mixtures ...

    FIELD: chemistry. SUBSTANCE: invention relates to construction materials, specifically to an additive for gypsum binder, dry construction mixtures, mortar and concrete based thereon, used in construction of residential and public buildings.

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  • Cement Chemistry and Additives - Schlumberger

    clinker to produce portland cement, comes Dissolved in water, gypsum releases ca c um and sulfate ions. These react with aluminate and hydroxyl ions re eased by Days Hydration Of the sili- cate components of Portland cement. Hydration is at first rapid. It then enters a slow "induction" peri-

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  • Method of gypsum-concrete mix production

    - positive effect on the water resistance of gypsum concrete flow MgCl 2 a precise flow of bischofite, i.e. K size =0,85-0,94 is achieved when the content in the concrete mix MgCl 2 5-6 wt.%. It is established that not only MgO, but MgCl 2 helps slow down the setting of gypsum binder and gypsum concrete.

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  • Analytics for US Patent No. 5021093, Cement/gypsum ...

    Cement/gypsum composites based cellulose-I Number of patents in Portfolio can not be more than 2000 United States of America Patent

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  • CertainTeed 0.5-in x 36-in x 60-in Diamondback Gypsum ...

    CertainTeed 0.5-in x 36-in x 60-in Diamondback Gypsum Backer Board ... proprietary Embedded Glass Reinforced Gypsum (EGRG®) Technology. Unique patent pending texture coating and pattern design creates a superior bond between the board surface and tile adhesive that helps prevent tile slippage during installation. Lighter weight gypsum, cement ...

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  • Customized Gypsum Powder Storage Silo For Sale, Gypsum ...

    Customized Gypsum Powder Storage Silo For Sale,Gypsum Silo Cost Dwon With Patent Design , Find Complete Details about Customized Gypsum Powder Storage Silo For Sale,Gypsum Silo Cost Dwon With Patent Design,Gypsum Powder Silo,Gypsum Powder Silo For Sale,Gypsum Powder Silo Price from Cement Making Machinery Supplier or Manufacturer-Henan SRON Industry Equipment Co., Ltd.

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  • The Use of Gypsum Plaster - Tim Ratcliffe

    The historical use of gypsum plaster and modern conservation techniques by Tim Ratcliffe. The Use of Gypsum Plaster Tim Ratcliffe ... a number of patent plasters were produced using this method. Plasters like Sirapite, Keenes Cement and Parian Cement, as well as many others which appear in old plastering books, are made from fully hydrated ...

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  • Influence of high temperature on gypsum-free Portland ...

    Influence of high temperature on gypsum-free Portland cement materials. ... Materials based on gypsum-free (GF) Portland cement cements resists better the effects of temperature over the range of 20–1200 °C. ... P. œurovec, B. »ernovsk̋, T. Vπetečka, J. Hrazdira, Z. Kadlec, Blended gypsum-free Portland cement, US Patent 5,076,851 ...

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  • Gypsum concrete - Wikipedia

    Gypsum concrete is a building material used as a floor underlayment used in wood-frame and concrete construction for fire ratings, sound reduction, radiant heating, and floor leveling. It is a mixture of gypsum plaster, Portland cement, and sand. The brand name Gyp-Crete, a Maxxon Corporation trademark, has come into general use as a term for gypsum concrete by construction professionals and ...

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  • USG Patent Information | USG

    USG Patents. For more than a century, USG has lead the industry in products, systems and processes to help revolutionize the way we build the places we play, work and live. USG's intellectual property portfolio is one of the largest in the industry and includes patents and patent applications throughout the world.

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  • United States Patent and Trademark Office

    Home page of the United States Patent and Trademark Office's main web site. Jump to Main Content. United States Patent and Trademark Office - An Agency of the Department of Commerce ... carefully balanced patent system is a necessity. And its benefits are unmistakable. - Director Andrei Iancu. Speech at the State of Technology Conference.

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  • DUROCK CEMENT BOARD - Custom Building Products

    DUROCK® CEMENT BOARD TECHNICAL BULLETIN ... Contact a United States Gypsum Company sales office or sales person for additional information. ... front surfaces. The edges are formed smooth - patent No. 4,916,004. The ends are square cut. Warranty: Products and systems provided by United States Gypsum Company are warranted to be free from ...

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  • Gypsum Mills | Gypsum Pulverizers | Williams Crusher

    Williams Patent Crusher offers a variety of gypsum mills and gypsum pulverizers that provide a wide range of available options and features. Natural gypsum, also known as “calcium sulfate dihydrate,” is a mineral that is found in sedimentary rock formations across 85 different countries.

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  • Factsheet on: What is Gypsum?

    Gypsum is normally only screened to remove ‘fines’ (mainly mudstones), then crushed and finely ground. Gypsum/Anhydrite for cement manufacture is supplied in crushed form for further fine grinding with cement clinker. C. Processing Natural Gypsum When Gypsum ( CaSO 4,2H 2O) is ground to a powder and heated at 150° to 165° C, three-

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  • Quick-setting cement composition containing Portland ...

    @article{osti_5707101, title = {Quick-setting cement composition containing Portland Cement, alpha gypsum and a dispersant}, author = {Ames, T.S.}, abstractNote = {Craters and earth voids are quickly filled with a high-strength, quick-setting cement composition comprising a mixture of cement material consisting essentially of from about 9.5 to ...

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  • gypsum grinding patent - diebold-bau.eu

    gypsum crusher formula - sgservicin. grinding media consumption in , roller mills grinding mills williams crusher williams patent crusher is the world leader in fluid , Gypsum has been used as a .

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  • Plaster Systems Brochure (English) - SA920

    Substrates Substrates can be either metal lath, unit masonry, monolithic concrete, or a recommended gypsum base, cement board or gypsum fiber panel. Basecoat Plasters Basecoat plasters provide strength and rigidity, compensating for substrate imperfections and resulting in …

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  • (PDF) Lightweight Gypsum Based Materials: Methods of ...

    Lightweight Gypsum Based Materials: Methods of Preparation and Utilization ... In the US patent [20], the gypsum slurry ... High porosity foams based on Portland limestone cement or gypsum …

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  • US20130326985A1 - Aqueous gypsum plaster-cement ...

    An aqueous gypsum plaster-cement composition comprises a hydraulic binder consisting of calcined gypsum and hydraulic cement in a weight ratio of from about 4:1 to about 2:1, an aggregate which comprises sand, a foam, a perlite, rice hulls or a mixture thereof, a superplasticizer comprising an air entraining agent, a retarder, and water in an amount of from about 0.4 to about 0.75 parts by ...

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  • US1923370A - Gypsum concrete mixture - Google Patents

    Patent type. Prior art keywords gypsum cement set water strength Prior art date 1931-02-12 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

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  • Aktuelle Ausgabe - Cement Lime Gypsum - zkg.de

    Specialists from all parts of the globe use this source to obtain vital information on cement, limestone and gypsum materials, extraction and preparation methods, thermal and mechanical processes and on production control, plant management and quality control systems. ... (22) 28.08.2018(43) 19.10.2018(57) Summary of the corresponding patent ...

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  • capping gypsum cement patent - resourceplus.co.za

    capping gypsum cement patent - drjp.org.in. capping gypsum cement patent. Get quote information. Would like to know the latest product quotes. Please tell us the details of the details, we will give you a most favorable offer information. Nanotechnology in the cement industry a patent analysis.

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  • Gypsum Grinding Patent - cz-eu.eu

    gypsum replacement anhydrite in cement grinding. gypsum replacement anhydrite in cement grinding. Patent US7556791 Gypsum anhydrite fillers and process for . Jul 7, . Get Price And Support Online; clinker and gypsum grinding mills - shailendraitc. Gypsum Grinding Mill Supplier, .

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  • Gypsum-cement system for construction materials - United ...

    Jun 05, 2001· Gypsum-cement system for construction materials . United States Patent 6241815 . Abstract: A composition for use in construction materials, which may be substituted for high performance concrete, patching materials, joint compounds, and the like, such as backer boards or panels, which includes a settable calcium sulfate, preferably a ...

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  • Gypsum-free cement compositions - Free Patents Online

    Sep 20, 1983· Disclosed herein are gypsum-free cement compositions comprising portland cement, limestone and an amine salt of formic or acetic acid. The compositions exhibit compressive strength comparable to ordinary portland cement compositions containing gypsum and the setting properties of the compositions can be regulated.

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  • Self Leveling Underlayment - gypsum-newyork.com

    LEVELROCK® Brand self leveling floor underlayments are primarily composed of a blend of Gypsum and hydraulic cements which provide high early strength and proven worry free bond to sub floor. ... Self-leveling Cement based concrete with design mixes from 3,500psi to over 5,000 psi can be used as an underlayment for any flooring or as a ...

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  • Patented Plaster Machine, Patented Plaster Machine ...

    The rendering material could be lime, cement mortar , foam mortar, gypsum etc. 4. The rendering thickness is no more than 3 cm and the height could be up to 5m. Sincola render machine plastering machine price with patent 2016

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