Alumina Ceramic Crucible For Chemical Laboratory
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Advantages of Alumina Ceramic Crucible
1. High Thermal Stability: Alumina ceramic crucibles can endure temperatures up to 1800°C, allowing for high-temperature experiments and processes without the risk of melting or thermal degradation.
2. Corrosion Resistance: The inert nature of alumina provides excellent resistance to chemical corrosion, ensuring that the crucibles remain unaffected by acids, alkalis, and other reactive substances commonly used in laboratories.
3. Mechanical Strength: The robust structure of alumina ceramics crucible ensures durability and resistance to mechanical stress, reducing the likelihood of cracking or breaking during handling and use.
4. Purity and Chemical Inertness: With a purity level typically above 99%, alumina ceramic crucibles offer a contaminant-free environment, crucial for precise and accurate chemical analysis.
Applications of Alumina Ceramic Crucible
1. Sample Preparation: Ideal for preparing samples that require high-temperature heating or calcination.
2. Metal Melting: Used for melting and holding small quantities of metals in metallurgical processes.
3. Ash Content Determination: Commonly used in the determination of ash content in various materials.
4. Chemical Analysis: Essential for conducting precise chemical reactions and analyses in controlled environments.
How to use alumina ceramic crucibles correctly
In our forging and experimental processes, crucibles are commonly used equipment. In order to ensure the normal use of the product, it is necessary to master the correct usage method. Below is a brief introduction.
1. When there is a solid to be heated with high heat, use a crucible. When using alumina ceramic crucibles, the crucible cover is usually placed diagonally on the crucible to prevent heated objects from jumping out and allow air to freely enter and exit for possible oxidation reactions.
2. Due to its small bottom, the crucible usually needs to be placed on an iron triangle to be heated directly by fire. The crucible can be placed directly or diagonally on an iron tripod, and can be placed on its own according to experimental needs.
3. After heating, do not immediately place the alumina ceramic crucible on a cold metal tabletop to prevent it from cracking due to rapid cooling. It should not be placed immediately on wooden tabletops to prevent scalding or fire. The correct approach is to leave it on an iron tripod for natural cooling, or place it on an asbestos mesh to allow it to cool slowly.
Alumina ceramic performance index (Notice of Correct in Leakeage Rate)
NO. | Property | Unit | Alumina |
1 | Al2O3 | % | >99.3 |
2 | SiO2 | % | — |
3 | Density | g/cm3 | 3.88 |
4 | Water absorption | % | 0.01 |
5 | Compressive strength | MPa | 2300 |
6 | 20℃ leakage rates | Torr・L/sec | >10-11=1.33322×10-12Pa・m3/sec |
7 | Twisting in high temperature | mm | 0.2 allowed in 1600℃ |
8 | Bonding in high temperature | not bonded in 1600℃ | |
9 | 20—1000℃ coefficient of thermal expansion | mm.10-6/℃.m | 8.2 |
10 | Thermal conductivity | W/m.k | 25 |
11 | Electric insulation strength | KV/mm | 20 |
12 | 20℃direct current insulation resistance | Ohm/cm | 1014 |
13 | High-temperature insulation resistance | 1000℃ MΩ | ≥0.08 |
1300℃ MΩ | ≥0.02 | ||
14 | Thermal shock resistance | 4 times not cracked in 1550℃ | |
15 | Maximum working temperature | ℃ | 1800 |
16 | Hardness | Mohs | 9 |
17 | Flexural strength | Mpa | 350 |
Our factory
Jinzhou Yunxing Industrial Ceramics Co., Ltd. was established in 2000, mainly producing various types of tubular ceramic products and various industrial parts with alumina content above 99.3%. The factory covers an area of 4000 square meters.
The company's main products are: alumina ceramic tubes, alumina ceramic crucibles, alumina ceramic rods, alumina ceramic boats, alumina ceramic plates, alumina ceramic parts, etc.
There ars 3pcs 1800 ° C high-temperature kilns ,2pcs 1400 ° C low-temperature kilns produced by our company independently. There are slip casting(main),and extrusion molding,injection molding etc other molding technologies,which can satisfy the produvtion requirements of various specific ceramics products.
The company has 105 employees, including one senior ceramic engineer, three engineers, six overseas sales staff, and four professional after-sales staff.
FAQ
A1. Alumina ceramic crucible is a laboratory material used mainly to heat, melt, burn, and burn substances.
A2. Used as a material for industrial furnaces due to its ability to maintain its hardness at high temperatures. Used as a protector for high-temperature thermal couples. Used as a material for the chemical industry due to its high corrosion resistance.
A3. Alumina, synthetically produced aluminum oxide, Al2O3, a white or nearly colourless crystalline substance that is used as a starting material for the smelting of aluminum metal. It also serves as the raw material for a broad range of advanced ceramic products and as an active agent in chemical processing.
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