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Capital Refractories has incorporated its gas diffuser technology into a pressed crucible. The resultant metallurgical treatment crucible is a multi-use, isostatically pressed one-piece refractory vessel with an integral gas supply device.
The granulometry of the crucibles walls and base is such that gas can easily travel through it. This allows the gas to enter the metal not just from the base but also the side walls. The outer wall of the crucible is usually coated with an inorganic sealant to inhibit loss of gas through the external surface.
Gas consumption has been proven to be substantially reduced when compared with surface gas blanket techniques.
