Zirconia (zirconium oxide) ceramic for refining platinum-group alloys--cs cermic co.,ltd

Zirconia (zirconium oxide) is the material of choice, and several grades are available.  A cheaper alternative is zircon (zirconium silicate) which is often used for refining platinum-group alloys from glassy material.

The usual arrangement is to prepare an assembly with the crucible packed into a refractory sleeve with a granular backing mix.   The sleeve can be of a lower quality refractory compared to the crucible as it only reaches a fraction of the temperature seen by the crucible; its main qualities should be high strength and good thermal flexibility to accommodate thermal expansion of its¡¯ contents during multiple thermal cycles.

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Zirconia Oxide Ceramics Home » Product Center » Zirconia Oxide Ceramics

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