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Company Profile

As a ceramic and carbon company, we have excellent quality control and products covering various applications such as semi-conductor,high-temperature furnaces, non-ferrous,pigment,magnetic powder, rubber,break pads and more. We have a dedicated research and development team committed to technological innovation and developing new products to meet customer demands. We have flexible production capabilities to provide customized refractory material solutions according to customer needs. With these competitive advantages, we strive to become your trusted and reliable supplier of refractory materials.

Why Choose Us

Factory

The founder,Mr Tang,open the first factory in Zibo and produce graphite molds and synthetic graphite powder. For Mr tang once worked for a state-owned graphite company, he has much experience in graphite application. Gotrays grow quickly in business.

Quality Control

Our team is experienced bringing wide knowledge to every order we received. We train our employee to ensure they posses the skills and qualifications to deliver outstanding results.

High Quality

We are committed to producing and providing high-quality product. We take advanced production techniques and strict quality control measures to ensure our products have excellent performance, stable chemical composition, and reliable service life.

Professional Team

We value environmental protection and sustainable development, focusing on developing and producing eco-friendly materials. We actively adopt energy-saving and emission-reducing production processes, promote recycling and resource utilization to minimize our impact on the environment.

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What is Ceramic Crucible?

A crucible is a container designed for extreme temperature applications, particularly in melting metals. Ceramics, with non-reactive surfaces, are crucial for making crucibles. Ceramic crucibles, including quartz, corundum, boron nitride, zirconia, etc., have been used in metalworking since 5000 BC. Their design has evolved with metallurgical advancements. Various raw minerals can be used to create ceramic crucibles, and the choice depends on the intended application's temperature and pressure requirements.

Benefits of Ceramic Crucible

01/

Thermal Resistance:
Ceramic crucibles are designed to withstand extremely high temperatures, often exceeding 1,600°C (2,912°F). This exceptional thermal resistance is achieved through the use of high-quality materials, such as alumina, silica, or zirconia, which have high melting points and exceptional heat-resistant properties.

02/

Chemical Inertness:
Ceramic crucibles are chemically inert, meaning they do not react with the substances being heated or processed. This ensures that the samples or materials being studied or produced remain uncontaminated, a critical requirement in many scientific and industrial applications.

03/

Durability and Mechanical Strength:
Ceramic crucibles are highly durable and possess excellent mechanical strength. They can withstand the physical stresses and impacts associated with handling, loading, and unloading processes, as well as the thermal stresses encountered during heating and cooling cycles.

04/

Thermal Conductivity:
Ceramic crucibles are designed to have good thermal conductivity, allowing for efficient heat transfer and uniform heating of the contents. This property is crucial in applications where precise temperature control and even heating are required, such as in metallurgy or material processing.

05/

Thermal Shock Resistance:
Many ceramic crucibles are engineered to have high thermal shock resistance, meaning they can withstand rapid temperature changes without cracking or breaking. This feature is particularly important in applications where the crucibles are subjected to sudden temperature fluctuations, such as in furnace or kiln operations.

06/

Corrosion Resistance:
Ceramic crucibles are resistant to a wide range of chemicals and corrosive environments, making them suitable for use in various industrial and laboratory settings where aggressive substances are present.

Type of Ceramic Crucible

Quartz Ceramic Crucible
A quartz ceramic crucible is crafted from highly pure fused quartz, featuring a fine structure, low thermal conductivity, a small thermal expansion coefficient, excellent thermal shock stability, good electrical performance, and chemical resistance. It finds wide application in the glass deep processing industry, metallurgy, electronics, chemicals, aerospace, and other fields. In general, the shape of the quartz ceramic crucible is mainly square and cylindrical.

Corundum Crucible
Corundum crucible, formally known as alumina crucible, is commonly referred to as corundum crucible when the content of alumina exceeds 95%. A corundum crucible is robust and can withstand high temperatures, acid, alkali, extreme cold and heat, and chemical corrosion. It is suitable for melting samples of weak alkaline substances like Na2CO3 without water. However, it is not suitable for melting samples with strong alkaline and acidic materials as fluxes.

Boron Nitride Crucible
The commonly used types of boron nitride include cubic boron nitride (C-BN) and pyrolytic boron nitride (P-BN). The boron nitride crucible is usually composed of P-BN. P-BN ceramics have good heat resistance, thermal stability, thermal conductivity, and high-temperature dielectric strength, and are ideal heat dissipation materials and high-temperature insulation materials.

Zirconia Crucible
Zirconia has a higher melting point than zirconium and is one of the most refractory materials in nature. Even if heated to 1900 ℃, zirconium oxide also won't react with the molten aluminum, iron, nickel and platinum metals, silicate and acid slag, etc., so the zirconia crucible can successfully smelt platinum, palladium, ruthenium, and cesium precious metals and their alloys.

Yttrium Oxide Crucible
Yttrium oxide (Y2O3) ceramics are high-performance with excellent heat resistance, corrosion resistance, and high-temperature stability. The melting point of yttrium oxide is greater than 2400 ℃, and it is difficult to react with some active metals (such as Ti, Al, Hf, Nb, etc.) at high temperatures. The crucible, mainly composed of high-purity Y2O3, has the potential for melting Ti and Ti alloys, or any oxygen-sensitive melting process.

Silicon Carbide Crucible
Silicon carbide crucibles, renowned for their exceptional thermal conductivity and resistance to chemical corrosion, find their forte in high-temperature applications. Composed of silicon carbide, a compound of silicon and carbon, these crucibles excel in melting and refining metals like aluminum, copper, and iron. With the ability to withstand extreme temperatures, silicon carbide crucibles are favored in foundries and laboratories for various metallurgical processes.

What Material Is ACeramic Crucible Made Of?

Crucibles are usually made from ceramic materials capable of withstanding very high temperatures. This is why the crucible material should always have a much higher melting point than the materials to be melted in the crucible. Sometimes, crucibles are made of steel or iron to melt softer metals, such as aluminum and zinc.

This is because this category of metals melts at a temperature lower than that of the crucible material. During production, the metalworking process usually begins with the casting or reshaping of metals, using a crucible. Although the original techniques used for manufacturing crucibles have mainly remained unchanged for thousands of years, modern crucibles can be used in processing laboratories to melt or burn solid chemicals over a burner.

High Temperature Resistance Silicon Carbide Cruciblles

Common Mistakes to Avoid When Using Ceramic Crucibles

While ceramic crucibles are highly durable and reliable, there are still some common mistakes that users should be aware of to ensure the safe and effective use of these essential tools. Avoiding these mistakes can help prevent costly damage, experimental failures, or even safety hazards.

One of the most common mistakes is subjecting the ceramic crucible to sudden or extreme temperature changes. Rapid heating or cooling can cause thermal shock, leading to cracks, chips, or even complete failure of the crucible. It's essential to follow the manufacturer's recommendations for heating and cooling rates, and to gradually introduce the crucible to the desired temperature range.

Another mistake is overloading the ceramic crucible, either by exceeding the recommended weight or volume capacity. Overloading can put excessive stress on the crucible, leading to deformation, cracking, or even structural failure. It's crucial to carefully measure and weigh the contents before loading the crucible to ensure that it is not being pushed beyond its limits.

Improper handling and storage of ceramic crucibles can also lead to problems. Dropping or impacting the crucible can cause damage, even if it's not immediately visible. Additionally, storing the crucible in a humid or corrosive environment can compromise its integrity over time. Proper handling techniques and storage conditions are essential to maintain the crucible's durability and performance.

Failing to clean the ceramic crucible thoroughly after use is another common mistake. Residual materials, such as melted metals or chemical compounds, can accumulate and interfere with subsequent experiments or applications. Neglecting to clean the crucible can lead to cross-contamination, skewed results, or even damage to the crucible itself.

Finally, using the wrong type of ceramic crucible for a specific application is a mistake that can have serious consequences. As discussed earlier, the choice of crucible material, size, and shape should be carefully considered based on the requirements of the experiment or industrial process. Using an inappropriate crucible can result in failed experiments, suboptimal performance, or even safety hazards.

By being aware of these common mistakes and taking the necessary precautions, users can ensure the safe and effective use of ceramic crucibles, maximizing their performance and extending their lifespan. Proper training, adherence to manufacturer guidelines, and attention to detail are key to avoiding these pitfalls and achieving successful outcomes.

The difference between Ceramic Crucible and Graphite Crucible

Crucibles are essential tools in various industries, from metallurgy to chemistry, where they play a vital role in processes like melting, casting, and heating materials at high temperatures. Two common types of crucibles are ceramic and graphite crucibles, each with its unique properties and advantages. Understanding the differences between these two materials can help you make the right choice for your specific applications.

Material Composition:
The most fundamental difference between ceramic and graphite crucibles lies in their material composition. Ceramic crucibles are typically made from various types of ceramics, such as alumina or zirconia. These materials are known for their high-temperature resistance, making ceramic crucibles suitable for processes that involve extremely high temperatures.

Graphite crucibles, on the other hand, are made from graphite, a form of carbon. Graphite crucibles have excellent thermal conductivity, which allows them to heat up quickly and distribute heat evenly. This makes them ideal for applications where precise temperature control is crucial.

Temperature Resistance:
One of the primary factors to consider when choosing a crucible is its temperature resistance. Ceramic crucibles are known for their exceptional resistance to high temperatures, often exceeding 3000°C. This property makes them well-suited for processes like metal casting and glass melting, where extreme heat is required.

Graphite Crucibles for Metal Melting also have impressive temperature resistance, typically up to 3000°C. However, their performance can be influenced by the specific type of graphite used and impurities in the material. For extremely high-temperature applications, ceramic crucibles may have a slight edge.

Chemical Resistance:
Another crucial factor to consider is the crucible’s resistance to chemical reactions with the materials being processed. Ceramic crucibles tend to be more chemically inert, making them an excellent choice when dealing with corrosive substances. They are often used in laboratories and industries where precision and purity are paramount.

Graphite crucibles, while chemically stable in many applications, may not be as resistant to certain corrosive materials as ceramic crucibles. Therefore, it’s essential to choose the right crucible material based on the specific chemicals and compounds involved in your processes.

Thermal Shock Resistance:
Ceramic crucibles typically have better thermal shock resistance compared to graphite crucibles. This means they can withstand rapid temperature changes without cracking or breaking. In processes that involve frequent heating and cooling cycles, ceramic crucibles are often the preferred choice.

Graphite crucibles are more susceptible to thermal shock and may crack or degrade if subjected to rapid temperature changes. Therefore, they are better suited for applications that involve relatively stable and consistent temperature conditions.

How to Make a Ceramic Crucible

Ceramic crucibles are used for science experiments and for melting down materials such as metals. With a few household tools, you can make your own ceramic crucible and begin melting things such as your broken jewelry and other scraps of metals that can be sold. It is also a good way to recycle old materials, thus protecting the environment. Creating the crucible out of ceramic rather than a metal makes it more durable and longer lasting.

Step 1
Take a piece of clay the size of the palm of your hand. Work the clay to warm it up.

Step 2
Place your piece of clay onto the center of your potter's wheel.

Step 3
Put some drops of water onto the clay. Spin the wheel slowly and press the clay downwards and toward the wheel's center to center the clay. A centered piece of clay will not wobble.

Step 4
Speed up the potter's wheel. Press into the center of the clay using your fingers of one hand, holding the edge of the clay with your other hand. Continue pushing the clay downwards with one hand very slowly until you have an open bowl shape.

Step 5
Press your clay between your hands while gradually moving them upwards, away from the wheel's center. Do not change the amount of speed and pressure you use while completing this motion in order to avoid uneven thicknesses in the bowl. Make the sides no higher than 6 inches and no thinner than 1/4 inch thick.

Step 6
Dampen your sponge. Run the sponge down the insides and outsides of your crucible to make it smoother.

Step 7
Stop your wheel from spinning. Create a little lip for your crucible from which you can pour. If you want one, sculpt a clay handle and place it on the side of your crucible.

Step 8
Let your crucible dry completely.

Step 9
Fire your crucible in an electric kiln at 2100 F. Let it stay in for seven hours. Let it cool before using it.

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FAQ

Q: What is the purpose of a ceramic crucible?

A: Ceramic crucibles are simple vessels made of ceramic materials, such as clay, that are used in the preparation of chemical reactions. The use of ceramic crucibles as a metalworking tool has been around since around 5000 BC, and they have a long history of success.

Q: What is the difference between quartz and ceramic crucible?

A: Quartz Crucible are available in milky white and transparent varieties. Milky white crucible is used below 1200 degrees Celsius, while transparent crucible are used below 1400 degrees Celsius. Ceramic Crucible is used between 1400 and 1600 degrees Celsius. Quartz Crucible is resistant to acids and alkalis.

Q: What is the difference between ceramic and graphite crucibles?

A: Different materials require different types of crucibles; for example, graphite crucibles are ideal for non-ferrous metals, while ceramic crucibles are better for high-purity materials. High-temperature applications may require crucibles made from materials like silicon carbide or tantalum.

Q: How hot can a ceramic crucible get?

A: In a redox atmosphere of 1650°C–1700°C, the 99.70% pure alumina crucible has good high-temperature insulation and mechanical strength, and the maximum temperature can quickly approach 1800°C. Depending on the circumstances of the application. Many sizes and shapes of alumina crucibles are available.

Q: How do you temper a ceramic crucible?

A: Next, temper the crucible by putting it in the furnace. Your flame should be orange and yellow. Slowly heat the container, starting on low power until it's a red-hot 1110 degrees Fahrenheit. Once it's fully heated, let your crucible cool.

Q: How do you clean a ceramic crucible?

A: The method is to heat the empty crucible to a temperature of about 500 degrees Fahrenheit and keep it for 20 minutes; then heat the crucible to red heat and stop heating; let the crucible cool slowly, this process will take away any moisture in the crucible.

Q: What is the difference between porcelain and ceramic crucible?

A: The primary difference between a crucible and porcelain lies in their composition, usage, and resistance to high temperatures. A crucible is a container designed to withstand extremely high temperatures and is used in laboratories and foundries for melting metals or conducting high-temperature chemical reactions.

Q: Why is ceramic crucible used?

A: This product is ideal for very high temperature applications. It is resistant to chemical attacks from most acids and alkaline solutions as well as hydrogen and other reducing gases, with the exception of : High concentration hydrofluoric acid. Phosphoric acid at boiling point.

Q: What does a ceramic crucible do?

Q: How to cure a ceramic crucible?

A: In order to heat-cure your crucible, do the following. You can begin by putting the container in the oven at 300 degrees for an hour. Next, temper the crucible by putting it in the furnace. Your flame should be orange and yellow.

Q: How hot can a ceramic crucible get?

Q: How do you clean a ceramic crucible?

Q: Why is ceramic crucible used?

Q: What is the difference between quartz and ceramic crucible?

Q: What does a ceramic crucible do?

Q: Why is it called a crucible?

A: Used from ancient times as a container for melting or testing metals, crucibles were probably so named from the Latin word crux, “cross” or “trial.” Modern crucibles may be small laboratory utensils for conducting high-temperature chemical reactions and analyses or large industrial vessels for melting and calcining ...

As one of the leading ceramic crucible manufacturers and suppliers in China, we warmly welcome you to wholesale high quality ceramic crucible at competitive price from our factory. Contact us for more details.

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