Structure of graphite high-temperature crucibles

　　 High-temperature crucible A refractory container used for melting and smelting liquid metals or conducting chemical reactions. It is usually shaped like a garlic press. It is essentially a cylinder that is wider at the top and narrower at the bottom. It can melt or extract certain desired substances by heating the crucible, and it is also an important tool for causing certain substances to undergo chemical reactions through heating.

　　Graphite High-temperature crucible

　　In modern times, with the increase in various metals and chemicals, various crucibles have emerged. According to the material, there are mainly cast iron crucibles, platinum crucibles, quartz crucibles, ceramic crucibles, graphite crucibles, etc., some for melting metals and others for chemical reactions.

　　Among these crucibles, because the raw materials of graphite are relatively soft, there are more graphite-made technological products.

　　Graphite crucibles are made mainly from natural graphite, with high-temperature clay as a binder, and added raw materials such as asphalt and tar. They are mainly used for smelting special alloys and non-ferrous metals.

　　The main material of graphite crucibles is graphite, so it has many advantages and characteristics of graphite. For example, it can withstand high temperatures of 1200-1600 degrees Celsius and has very strong heat transfer performance, which can reduce melting time, reduce energy consumption, and improve efficiency.

　　Why High-temperature crucible doesn't it melt?

　　Steel is an indispensable material in modern society. It covers all aspects of our lives. We often see that in steel plants, molten steel is placed in a metal-like container, then poured into a mold to cool, and then shaped. But it is also metal. Why doesn't the molten steel container melt?

　　In fact, this metal container is composed of a multi-layer structure. The inner layer is called an insulating layer. In addition, there is also an insulating layer on the second layer. This layer is a combination of various high-temperature resistant materials. They are made together into a high-temperature alloy, such as an aluminum-magnesium layer, and the outer layer is the ordinary metal layer we see.

　　After the temperature of the molten steel is weakened by the inner layer, when it reaches the outer layer, the temperature is only over 300 degrees, which is far lower than the melting temperature of the metal, so it will not melt naturally.

　　The insulating layer inside this metal container is a crucible. It is made of quartz sand and other materials. It can withstand temperatures as high as 1700 degrees Celsius without melting. For ordinary metals, the melting temperature is only over 1000 degrees, while the melting point of steel is around 1500 degrees Celsius, so the crucible will not melt.

　　The crucible we see is a high-temperature resistant, large and heavy container, the surface of which is covered with residues of various materials. However, High-temperature crucible it is essential for the smelting of the entire metal and the chemical reaction process after heating of certain materials.