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The company also supplies refractory minerals to other refractory manufacturers for use in the ceramics industries as well as in welding and road surface products. Despite the closure in the 1990s of the nearby silica pits which supplied raw materials, the company remains a major local employer. As at 2015, it employed approximately 115 people. [1]
Next, in 1995, RHI AG acquired a majority stake in its previous competitor Didier-Werke AG (founded by Friedrich Ferdinand Didier in 1834 when he acquired a brick and lime firing plant near Szczecin in Poland, and established the factory "Chamottefabrik F. Didier" in Podjuchy, thus becoming one of the first manufacturers of refractory bricks in ...
Calderys, a subsidiary of Imerys, is a multinational company specialized in producing heat resistant monolithic refractory products. [1] Calderys is headquartered at Issy-Les-Moulineaux on the outskirts of Paris, with over 2,000 employees and 18 plants in more than 30 countries.
In the making of firebrick, fire clay is fired in the kiln until it is partly vitrified.For special purposes, the brick may also be glazed. There are two standard sizes of fire brick: 229 mm × 114 mm × 76 mm (9 in × 4 + 1 ⁄ 2 in × 3 in) and 229 mm × 114 mm × 64 mm (9 in × 4 + 1 ⁄ 2 in × 2 + 1 ⁄ 2 in). [2]
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."
Standard shapes have dimensions that conform to conventions used by refractory manufacturers and are generally applicable to kilns or furnaces of the same types. Standard shapes are usually bricks that have a standard dimension of 9 in × 4.5 in × 2.5 in (229 mm × 114 mm × 64 mm) and this dimension is called a "one brick equivalent".
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