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  2. Lime kiln - Wikipedia

    en.wikipedia.org/wiki/Lime_kiln

    Rotary lime kiln (rust-colored horizontal tube at right) with preheater, Wyoming, 2010 Traditional lime kiln in Sri Lanka. A lime kiln is a kiln used for the calcination of limestone (calcium carbonate) to produce the form of lime called quicklime (calcium oxide). The chemical equation for this reaction is: CaCO 3 + heat → CaO + CO 2

  3. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    RNA folding problem: Is it possible to accurately predict the secondary, tertiary and quaternary structure of a polyribonucleic acid sequence based on its sequence and environment? Protein design : Is it possible to design highly active enzymes de novo for any desired reaction?

  4. Lime (material) - Wikipedia

    en.wikipedia.org/wiki/Lime_(material)

    Lime is an inorganic material composed primarily of calcium oxides and hydroxides. It is also the name for calcium oxide which is used as an industrial mineral and is made by heating calcium carbonate in a kiln. Calcium oxide can occur as a product of coal-seam fires and in altered limestone xenoliths in volcanic ejecta. [1]

  5. Calcium oxide - Wikipedia

    en.wikipedia.org/wiki/Calcium_oxide

    Calcined gypsum is an alternative material in industrial plasters and mortars. Cement, cement kiln dust, fly ash, and lime kiln dust are potential substitutes for some construction uses of lime. Magnesium hydroxide is a substitute for lime in pH control, and magnesium oxide is a substitute for dolomitic lime as a flux in steelmaking. [28]

  6. Carbonatation - Wikipedia

    en.wikipedia.org/wiki/Carbonatation

    The carbonatation process is used in the production of sugar from sugar beets.It involves the introduction of limewater (milk of lime - calcium hydroxide suspension) and carbon dioxide enriched gas into the "raw juice" (the sugar rich liquid prepared from the diffusion stage of the process) to form calcium carbonate and precipitate impurities that are then removed.

  7. Flue-gas desulfurization - Wikipedia

    en.wikipedia.org/wiki/Flue-gas_desulfurization

    Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO 2) from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting processes such as waste incineration, petroleum refineries, cement and lime kilns.

  8. List of lime kilns in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_lime_kilns_in_the...

    House built in 1808, and 19th-century lime kiln. Peter Houghtaling Farm and Lime Kiln, West Coxsackie, New York, NRHP-listed; Powell–Trollinger Lime Kilns, at Catawba, Catawba County, North Carolina, NRHP-listed. Three lime kilns built about 1865, built into the side of a hill behind a solid stone wall, 20 to 30 feet high.

  9. Category:Lime kilns - Wikipedia

    en.wikipedia.org/wiki/Category:Lime_kilns

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