How much is the application temperature of corundum crucible?

Corundum crucible is a kind of raw material with heat resistance, ultra-low temperature, high temperature and strong organic chemical corrosion, which is used to test some chemicals. Crucible is a key component of chemical instrument. It is a vessel for melting shape memory alloy and heating to reflect heterogeneous phase. It is the basic to ensure the smooth development of chemical change.

High temperature conductive corundum crucible porcelain crucible.

1. Heat resistance 1200 degrees up and down.

2. Melt the test sample, such as K2S2O7, for acidic substances.

3. Generally, NaOH, Na2O2, Na2CO3, etc. cannot be used as solution for melting to prevent erosion of porcelain crucible. Porcelain crucible cannot be touched with

4. Porcelain crucibles can generally be cleaned by burning in dilute solution.

There are three kinds of raw materials produced by crucible method. One is crystalline high-purity graphite, the other is plastic deformation refractory clay, and the third is calcined high hard porcelain clay frame cement clinker. Since 2008, heat-resistant composites have been gradually applied, such as carbon carbon composites, aluminum oxide diamond sand, crucible frame ferrosilicon cement clinker. This product has a very obvious practical effect on improving the product quality of crucible and improving the relative density and impact toughness of crucible.

1.99.70% corundum.

The 1800 ℃ 1650 ℃ - 1700 ℃ corundum crucible has excellent high-temperature insulation and impact toughness in redox reaction atmosphere. Strong thermal conductivity and small coefficient of thermal expansion. When it exceeds 1700 ℃, it shall not be reflected with gas, vapor, radon, carbon monoxide, etc. The short-term application temperature is 1800 ℃.

2. 99.35% of corundum.

The corundum crucible is in redox reaction atmosphere at 1750 ℃, 1600 ℃ -- 1650 ℃.

High aluminum content can reach 85.00%.

The high alumina crucible is 1350 ℃. 1290 ℃, which has excellent high-temperature insulation layer and impact toughness in redox reaction atmosphere. Strong thermal conductivity and small coefficient of thermal expansion. It does not reflect gas, vapor, radon, carbon monoxide, etc. For long-term application, the temperature gradient transition is small. Short term application temperature 1400 ℃.

What are the disadvantages of smelting with corundum crucible?

Corundum crucible is a superior refractory. Its scientific research, manufacturing and development trend are widely used in China's refractory intelligent technology. It can also be used in refractory materials and related fields, such as steel metallurgy, nonferrous plate refining, laminated glass, porcelain, concrete, petrochemical industry, etc.