What is a fire clay crucible?

A fire clay crucible is a type of high-temperature crucible made from fire clay. Fire clay is a type of refractory clay that is specifically designed to withstand high temperatures without breaking or melting.

Crucibles are used in melting glass or crystal and other high-temperature processes, such as smelting Zno. For example, the crucible is placed in a furnace, where it is heated to a high temperature, allowing the material inside to melt. Once the glass material has melted, it can be handmade to a desired shape.

Fire clay crucibles are known for their ability to withstand extremely high temperatures and for their durability. They are shaped like a cup or pot, with a wide base or a narrow neck, and are often used in the laboratory and industrial settings where high temperatures are required for a variety of applications.