gypsum manufacturing ammonium

  • Ammonium sulfate | (NH4)2SO4 - PubChem

    Finely ground gypsum is reacted with ammonium carbonate solution in a cascade of stirred vessels. The residence time is several hours. The residence time is several hours. The reaction mixture of calcium carbonate and ammonium sulfate solution is filtered on rotary vacuum filters. ...

  • US216323A - Improvement in the manufacture of sulphate of ...

    The combined apparatus herein set forth for manufacturing sulphate of ammonia from turf and similar material, consisting in the vertical cineriferous furnaces, the vertical ammonium-furnaces, the regenerator, the refrigerator, the gypsum-digester, the filter and evaporator, and their connectingpipes and cooks, substantially as set forth.

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  • Gypsum, Micro Mix, Water Soluble Fertilizer, Di Ammonium ...

    Gypsum is a by-product available from Phosphoric Acid Plant and used in production of Ammonium Sulphate. GSFC has been first in the country to develop and implement successfully Phospho-Gypsum process for manufacture of Ammonium Sulphate.

  • 11.16 Gypsum Manufacturing - US EPA

    11.16 Gypsum Manufacturing 11.16.1 Process Description1-2 Gypsum is calcium sulfate dihydrate (CaSO4 2H2O), a white or gray naturally occurring mineral. Raw gypsum ore is processed into a variety of products such as a portland cement additive, soil conditioner, industrial and building plasters, and gypsum wallboard. To produce plasters or

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  • Manufacture of ammonium sulfate fertilizer from gypsum ...

    Costs for constructing and operating a conceptual plant based on a proposed process that converts flue gas desulfurization (FGD)-gypsum to ammonium sulfate fertilizer has been calculated and used to estimate a market price for the product. The average market price of granular ammonium sulfate ($138/ton) exceeds the rough estimated cost of ammonium sulfate from the proposed process ($111/ .