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  2. Fire clay - Wikipedia

    en.wikipedia.org/wiki/Fire_clay

    Fire clay in a furnace. Fire clay is a range of refractory clays used in the manufacture of ceramics, especially fire brick.The United States Environmental Protection Agency defines fire clay very generally as a "mineral aggregate composed of hydrous silicates of aluminium (Al 2 O 3 ·2SiO 2 ·2H 2 O) with or without free silica."

  3. Fire brick - Wikipedia

    en.wikipedia.org/wiki/Fire_brick

    A fire brick, firebrick, fireclay brick, or refractory brick is a block of ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand high temperature, but will also usually have a low thermal conductivity for greater energy efficiency. Usually dense fire bricks are used in ...

  4. Vitreous china - Wikipedia

    en.wikipedia.org/wiki/Vitreous_china

    Vitreous china. Vitreous china is an enamel coating that is applied to ceramics, particularly porcelain, after they have been fired, though the name can also refer to the finished piece as a whole. The coating makes the porcelain tougher, denser, and shinier, and it is a common choice for items such as toilets and sink basins. [1][2][3]

  5. Seatearth - Wikipedia

    en.wikipedia.org/wiki/Seatearth

    Seatearth is a British coal mining term that is used in the geological literature. As noted by Jackson, [1] a seatearth is the layer of sedimentary rock underlying a coal seam. Seatearths have also been called seat earth, "seat rock", or "seat stone" in the geologic literature. Depending on its physical characteristics, a number of different ...

  6. Burmantofts Pottery - Wikipedia

    en.wikipedia.org/wiki/Burmantofts_Pottery

    Burmantofts Pottery was the common trading name of a manufacturer of ceramic pipes and construction materials, named after the Burmantofts district of Leeds, England. Following the example of Royal Doulton, having grown into a large company known for unglamourous utilitarian wares, the company expanded into decorated art pottery and decorative ...

  7. Grog (clay) - Wikipedia

    en.wikipedia.org/wiki/Grog_(clay)

    Grog, temper for clay. Grog, also known as firesand and chamotte, is a raw material usually made from crushed and ground potsherds, reintroduced into crude clay to temper it before making ceramic ware. It has a high percentage of silica and alumina. It is normally available as a powder or chippings, and is an important ingredient in Coade stone.

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