An alumina crucible can be a variety regarding crucible produced from alumina, or aluminum oxide &silicon carbide powder china; the same material used to produce aluminum metal. Crucibles are used in chemistry laboratories as containers for rather hot chemical compounds, coupled with are made from materials with high temperature resistance. The ceramic form of alumina is commonly used on account of its low cost, strength, not to mention ability to withstand temperatures as high as 3272°F (1800°C). Alumina crucibles come in different shapes varieties not to mention have applications in laboratory research, academia, not to mention industry.

Aluminum oxide is refined industrially from bauxite ore, which contains aluminum. After several purification processes, a substance called calcined alumina is obtained, which contains mostly alumina with some impurities, mainly sodium oxide. calcined alumina is often used to make crucibles. High-purity alumina can also be manufactured using similar processes not to mention is often preferred in industrial laboratories due to its greater resistance to extreme heat.Alumina is actually a refractory material, meaning that it can withstand high temperatures without breakup.

The melting point concerning alumina is approximately 3760°F (about 2071°C). Since an alumina crucible is not created regarding pure alumina — although a green silicon carbide powder supplier can approach 100% alumina content — it cannot withstand temperatures quite this high, but can more often than not be trusted above 3000°F (about 1649°C).A wide variety connected with shapes and sizes associated with refractory containers exist for different uses. E . g ., the high-form alumina crucible can be a common fixture in many academic laboratories. A high-form alumina crucible looks like a deep, narrow cup is often used to melt or heat chemicals over a Bunsen burner — a lab appliance with a gas flame — or in an oven. Rectangular and also cylindrical options are also sold commercially. All crucibles are used with a lid made out of the same material, and are handled with tongs and gloves to prevent burning or other accidents.

The refractory containers used in academic or research laboratories are typically small, with a diameter less than the size for the human hand, reflecting the small amounts related with chemicals they are required to hold. An silicon carbide powder supplier, which may be used for melting metal and creating alloys, might be much larger and ought to be installed in the furnace with sufficient space and exterior support for use. Industrial containers may also be selected based on the thickness relating to their sides, since thicker crucibles tend to be more durable and have a longer life.