Introduction to corundum crucibles

Product Overview:

Corundum crucibles s, saggars, burners, etc., are not easy to crack or fall off, and have a long service life.

Application Range:

Widely used in the refining of rare earth permanent magnet industry and alloy powder melting furnaces.

Applications:

1. Corundum crucibles Made of porous electrofused alumina, it has high strength and is refractory.

2. Corundum crucibles Suitable for melting NaCl, etc., but not suitable for melting samples containing alkaline substances such as Na2O2, NaOH, soda ash, potassium carbonate and acidic substances (such as K2S2O7, etc.).

3. Corundum crucibles Features: High temperature resistance, acid and alkali resistance, rapid cooling and heating resistance, and chemical corrosion resistance.

4. Corundum crucibles Shape: Arc and cylindrical.

5. Corundum crucibles Specifications: 5-1000ml.

Typical Applications

Industry: Expansion joints, backing insulation, heat insulation boards, mold insulation.

Non-ferrous metal industry: Intermediate packages and flow trough covers, used for casting copper or copper alloys.

Industry: Lightweight kiln car structure, kiln hot surface lining, kiln temperature zone separation, fire protection.

Glass industry: Melt pool backing, burner brick insulation

Kiln industry: High-temperature refractory materials (instead of blankets), heavy refractory material backing, expansion joints.

Light industry: Industrial and household boiler combustion chamber lining

Industry: High-temperature heating furnace lining hot surface materials

Glass industry: Molds for deep-processed products.

Speaking of crucibles, I wonder how many people know about them. In fact, crucibles are an important part of chemical instruments. They are containers for melting and refining metal liquids, heating and reacting solids and liquids, and are the basis for ensuring the smooth progress of chemical reactions. However, there are many types of crucibles, including iron crucibles, timely crucibles, graphite crucibles, and Corundum crucibles 。Actually, what I'm talking about today is Corundum crucibles 。

1. Acid pickling: Generally, it is soaked in nitric acid for a long time; rinse with water again.

2. Drying, slowly heating to 800℃ in a high-temperature furnace and maintaining for 6 hours.

3. After cooling, it can be used.

4. Remove impurities and convert insoluble substances into soluble nitrates to remove them.

5. Remove trace nitrates in the crucible (thermal decomposition method): Note that the heating speed must not be fast, otherwise the crucible will peel off (explosion damage).

The above is an introduction to the cleaning method of Corundum crucibles 。I don't know how much you've learned. Actually, after reading this knowledge, you should have learned a lot, even those who didn't know before have learned a lot. In fact, the knowledge summarized by Bian Xiao hopes to be of great help to you.