Ceramic crucible with lid

Description

Description

The ceramic/ porcelain crucibles are small, cylindrical, and  shallow containers made of porcelain, a type of ceramic material. These crucibles are commonly used in laboratories and various industrial applications for heating, melting, and calcining substances at high temperatures.

Features of Porcelain Crucible

• Material: Porcelain crucibles are made from high-quality, heat-resistant porcelain ceramics, which can withstand very high temperatures without melting or deforming. High purity alumina, good chemical corrosion resistance.
• Shape and Size: They come in various sizes and shapes, but they are usually cylindrical or bowl-like. The choice of size and shape depends on the specific application and the quantity of material to be heated or melted. Volume ranges from 20 mL to 300 mL can available.
• Heat Resistance: Good temperature resistance, long-term use at 1600°C, short-term 1800°C. Porcelain is chosen for its ability to withstand high temperatures, making these crucibles suitable for tasks such as melting metals, performing high-temperature reactions, or conducting experiments requiring controlled heating.
• Chemical Inertness: Porcelain is relatively chemically inert, which means it does not react with most substances at high temperatures. This property makes porcelain crucibles suitable for a wide range of chemical reactions and sample preparations.

Advantages of Porcelain Crucible

• Durability: Porcelain crucibles are durable and can be used repeatedly, making them a cost-effective option in the long run.
• Thermal Shock Resistance: Porcelain has good resistance to thermal shock, which means it can handle rapid temperature changes without cracking or breaking.
• Non-Porous Surface: Porcelain has a non-porous surface, which makes it easy to clean and minimizes the absorption of substances, ensuring accurate measurements and preventing contamination.
• Versatility: Porcelain crucibles are versatile and can be used for a wide range of applications, including heating, melting, and calcination of various substances.
• Graduated Markings: It come with graduated markings, which can be useful for measuring and tracking the volume of liquids or substances being processed.
• Cost-Effective: Compared to some other high-temperature crucible materials like platinum or quartz, porcelain crucibles are more cost-effective, making them a practical choice for many laboratories.
• Easy to Handle: Porcelain crucibles typically have handles or tabs that make them easy to handle, especially when they are hot.

Applications

• Melting and fusing metals and metal oxides.
• Heating and evaporating liquids.
• Ignition and ashing of organic and inorganic samples for quantitative analysis.
• Calcination of substances to remove volatile components.
• Conducting high-temperature experiments in laboratories.

Handling: When using porcelain crucibles, it’s important to handle them carefully. Sudden temperature changes can cause them to crack or break, so they should be preheated gradually. Additionally, they should be cooled slowly to avoid thermal shock.

Cleaning: After use, porcelain crucibles can be cleaned by brushing, scraping, or soaking to remove any residual materials. They should be cleaned thoroughly to avoid contamination in subsequent experiments.

While porcelain crucibles are versatile and widely used, it’s important to note that they may not be suitable for extremely high-temperature applications where more specialized materials like graphite or certain types of ceramics would be preferred. The choice of crucible material depends on the specific requirements of the experiment or industrial process.