Metals, glass, and pigment are kept in crucibles, containers that can endure extremely high temperatures until they are ready to be melted in a furnace. Then Crucibles use in laboratories are made to resist the comparatively high temperatures involved in metal casting studies.
Ceramic crucibles may be clean of chemicals quite easily. As a result, lab workers typically choose ceramic crucibles. To do that, you need a few simple chemicals and materials.
Step 1: Carefully remove as much of the materials used in your experiment’s leftover residue from the
crucible as possible.
Step 2: Add fused potassium bicarbonate to your ceramic crucible (solid form). There should be enough bicarbonate in the crucible to extend past the line of the experiment’s leftovers. Fill the crucible to the top if necessary.
Step 3: Set the crucible on the burner. Until the fused bicarbonate melts, heat the crucible. It should be heat until a thin layer of red potassium salt forms on the top. Stir the melt a couple of times with a mixing rod. It should take one minute or less to complete the melting process.
Step 4: Take your crucible out of the heat. Pour the melt-away.
Step 5: Run hot water over the crucible to rinse. Dry the area with a fresh cloth. Use alumina-impregnated nylon webbing to finish cleaning the surface if your crucible is platinum. The crucible should cool. We recommend visiting xtlcrucible.com for more information if you want to learn more about Fire Assay Crucible, Gold Melting Crucible, and Crucibles For Melting Metal.