Tungsten Crucible - The Use of Crucible in lab

Tungsten crucible is a vessel or melting pot, whose shape is similar to the pot or cup, which is also a kind of crucible and is made of extremely refractory material (such as graphite, quartz, clay, china clay or compare refractory metal, etc.) .

Crucible is a bowl-shaped vessel, which has a ceramic-like deep bottom. The following is something about the use of crucible in lab. Because crucible’s high temperature resistance performance is better than glass crucibles’, so when there is a solid requires heating or melting, we must use it. When using a crucible, in order to prevent heat objects bounces or melting liquid spills, a crucible cover is usually needed to diagonally cover on the crucible, to allow air to have a freely access and for possible oxidation reactions. Because the bottom of the crucible is very small, generally you need to put it on the pipeclay triangle and then directly heat it. Crucible can be positively or obliquely put on the pipeclay triangle, according to the requirements. After heating, the tungsten crucible should not immediately be placed on a cold metal table, to prevent it from being broken due to the rapid cooling.

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