NATIONAL GYPSUM COMPANY Veneer Plaster

    National Gypsum Company Construction Guide Rev. 07/2017 343 deSCrIpTIoN Gold Bond ® Kal-Kote Texture Finish Plaster is a mill-mixed finish plaster for textured applications. It consists of specially ground, calcined gypsum and aggregate, requiring the addition of .

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    Calcium sulfate - Wikipedia

    Calcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO 4 and related hydrates.In the form of γ-anhydrite (the anhydrous form), it is used as a desiccant.One particular hydrate is better known as plaster of Paris, and another occurs naturally as the mineral gypsum.It has many uses in industry. All forms are white solids that are poorly soluble in water.

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    What is Calcining? (with pictures) - wisegeek

    Sep 27, 2019 · Calcined alumina is produced in various grades and for various purposes, for example for use in the manufacture of electrical and electronic products and to produce synthetic gems used for different types of lasers. The process is also used to remove the water in bauxite, producing calcined bauxite which can be used to make aluminum oxide.

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    Gypsum Wallboard Chemical Additives - geosc

    wallboard by placing an aqueous core slurry comprised predominantly of calcined gypsum between two sheets of paper thereby forming a sandwich structure. The aqueous gypsum core slurry is allowed to set or harden by rehydration of the calcined gypsum, usually followed by heat treatment in a dryer to remove excess water.

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    Calcium sulfate - Wikipedia

    With judicious heating, gypsum converts to the partially dehydrated mineral called calcium sulfate hemihydrate, calcined gypsum, and plaster of Paris.This material has the formula CaSO 4 ·(nH 2 O), where 0.5 ≤ n ≤ 0.8. Temperatures between 100 and 150 °C (212–302 °F) are required to drive off the water within its structure.

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    Process and apparatus for calcination of gypsum - Cement ...

    Calcined gypsum treatment device and calcined gypsum treatment method (22) 31.01.2017 (43) 17.01.2019 (57) A calcined gypsum treatment apparatus has an agitating type of cooler provided with a cooling region for cooling the calcined gypsum, and a moisture supplying...

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    Shi Gao - - Gypsum Fibrosum - Chinese Herbs - American ...

    Unprepared Gypsum Sheng Shi Gao is the form most commonly used internally. Calcined Gypsum Duan Shi Gao is a fine powder that is less cold with enhanced ability to generate flesh and is most often used externally for eczema, scalding, and erupted sore or wounds that fail to heal.

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    Introduction To Gypsum (shi gao) - TCM Treatment

    Calcined gypsum is only for external use. Precautions: Gypsum is contraindicated for cold syndrome of deficiency type in the spleen and stomach (middle-jiao).----- For the convenience of customers, we offer the Gypsum (shi gao) as the quick-dissolving granule made through modern technology.

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    EP0077373A1 - Treating calcined gypsum with solubilizing ...

    Method for producing a coated stucco has low water demand in which the calcined gypsum is treated with an aqueous solution of a solubilizing agent gypsum, preferably in a mixer at impact while grinding the calcined gypsum to increase the specific surface. The product can be dried for storage or sent directly to the position of forming gypsum board.

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    Reclamation of water and the synthesis of gypsum and ...

    This integrated approach has three phases of water treatment and they include: (i) neutralisation and metals removal using calcined cryptocrystalline magnesite, (ii) gypsum synthesis in the secondary process using lime and (iii) bubbling of CO 2 into the third reactor to synthesize limestone. The product water is anticipated to meet the ...

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    US4360386A - Treating calcined gypsum with solubilizing ...

    A process for producing a healed stucco of low water demand is disclosed in which calcined gypsum is treated with an aqueous solution of a gypsum solubilizing agent, preferably in an impacting blender while grinding the calcined gypsum to increase its surface area. The product can be dried for storage or sent directly to forming gypsum board.

    Cited by: 20
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    Gypsum Herb Uses, Benefits, Cures, Side Effects, Nutrients

    Uses, Benefits, Cures, Side Effects, Nutrients in Gypsum. List of various diseases cured by Gypsum. How Gypsum is effective for various diseases is listed in repertory format. Names of Gypsum in various languages of the world are also given.

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    Calcium sulfate - Wikipedia

    With judicious heating, gypsum converts to the partially dehydrated mineral called calcium sulfate hemihydrate, calcined gypsum, and plaster of Paris.This material has the formula CaSO 4 ·(nH 2 O), where 0.5 ≤ n ≤ 0.8. Temperatures between 100 and 150 °C (212–302 °F) are required to drive off the water within its structure.

    Chemical formula: CaSO₄
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    US4252568A - Process for preparing calcined gypsum and ...

    A process for preparing calcined gypsum (stucco) which comprises treating a mass of calcined gypsum by adding, with thorough blending, small portions of an aqueous solution of ligno sulfonate; allowing the treated stucco to heal; and optionally drying the healed stucco and further optionally grinding the healed stucco. If the treated calcined gypsum is not to be used shortly after the healing ...

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    Plaster - Wikipedia

    A large gypsum deposit at Montmartre in Paris led "calcined gypsum" (roasted gypsum or gypsum plaster) to be commonly known as "plaster of Paris". Plasterers often use gypsum to simulate the appearance of surfaces of wood, stone, or metal, on movie and theatrical sets for example.

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    Perimeter treatment material - YOSHINO GYPSUM

    Perimeter treatment material Perimeter treatment for all four sides of the wall is essentially required in order to provide maximum levels of fire resistance and sound insulation in wall systems. We developed our products for treating wall perimeter based on the accumulated technical know-how from many construction systems.

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    Process for preparing calcined gypsum - United States ...

    Sep 26, 1978 · An improved process for producing calcined gypsum which comprises continuously treating a mass of calcined gypsum by adding, with thorough blending agitation, small metered portions of water to result in the incorporation of about 1-8% free water in the mass by weight of the gypsum, allowing the blended mass to heal the calcium sulfate hemihydrate surface fissures and thereafter .

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    KGS--Gypsum in Kansas--Uses and Summary

    The application of heat to gypsum until it has lost part or all of its water of hydration is called calcining. The primary uses of gypsum depend upon the hydraulic properties of the products obtained by this treatment with heat, hence the calcining process is vital to the industry. Most gypsum is calcined in gypsum kettles or in rotary kilns.

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    Plaster | definition of plaster by Medical dictionary

    plaster [plas´ter] 1. a mixture of materials that hardens; used for immobilizing or making impressions of body parts. 2. an adhesive substance spread on fabric or other suitable backing material, for application to the skin, often containing some medication, such as an analgesic or local vasodilator. plaster of Paris calcium sulfate dihydrate, reduced ...

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    Process and apparatus for calcination of gypsum - Cement ...

    Calcined gypsum treatment device and calcined gypsum treatment method (22) 31.01.2017 (43) 17.01.2019 (57) A calcined gypsum treatment apparatus has an agitating type of cooler provided with a cooling region for cooling the calcined gypsum, and a moisture supplying...

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    Treatment and Disposal of Gypsum Board Waste -- Industry ...

    water. The calcined gypsum (or hemihydrate) (CaSO 4 l 1/2H 2O) pow-der is then used in producing the base for gypsum plaster, wallboard and other gypsum products. To produce gypsum board, the calcined gypsum is mixed with water, foam and additives to form a slurry which is fed between continuous sheets of paper on a continuous belt line. As

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