Crucibles

Crucible Use Guidelines

Use Fire Clay Crucibles for general fire assay fusions and other melting applications from 2200^oF up to 2400^oF.

Graphite Crucibles are typically used for smelting and refining of precious and base metals.
They are suitable for use at temperatures up to 3000^oF.

Fused Silica Crucibles are used for melting gold, silver, and other precious metals at up to 2750^oF.

Silicon Carbide Crucibles are more durable and long lasting than graphite crucibles. They can be used for melting, smelting, and refining of precious and base metals, concentrates, and other products

Be sure and use the proper flux to ensure long life of the crucible and to produce the desired result.

Various Assay and Refining Pre-Mixed Fluxes as well as individual flux components are available.