Incrustation(redirected from incrust)
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a crust (in the form of mounds) on the surface of the refractory linings of shaft and tube metallurgical furnaces; it usually forms as a result of certain deviations from standard in the smelting process (low quality of raw materials, uneven run of furnace, and so on). Incrustation should be distinguished from slag lining, which is intentionally created on the interior (working) surface of certain metallurgical units during the smelting process.