What is the use of an iron crucible?
The crucible crucible is used refractory materials (such as clay, graphite, kaolin, quartz or difficult to molten metal such as iron) made of the vessel or melting tank. A bowl shaped container with a ceramic bottom.
Because it is more able to withstand high temperatures than glass. When used, the crucible is usually placed diagonally on the crucible to prevent the heat from jumping out and allowing the air to pass in and out freely for possible oxidation. Because the bottom of the pot is very small, it usually needs to be placed on the clay triangle to heat it directly. The crucible can be placed on the iron tripod with either positive or oblique directions, and can be placed on the basis of the requirements of the experiment. When the crucible is heated, it cannot be immediately placed on a cold metal table to prevent it from breaking due to rapid cooling.
When solids have to be heated by fire, the crucible must be used.
