Overview of Mullite Crucible

Mullite crucibles are made from a high-performance ceramic material composed primarily of alumina (Al₂O₃) and silica (SiO₂). Known for their excellent thermal stability and mechanical strength, mullite crucibles are widely used in high-temperature applications such as melting metals, glass, and ceramics. They offer superior resistance to thermal shock and chemical attack, making them indispensable in both laboratory and industrial settings.

Features of Mullite Crucible

Thermal Shock Resistance: Exceptional ability to withstand rapid temperature changes without cracking.
High Mechanical Strength: Strong and durable, even at elevated temperatures.
Chemical Stability: Resistant to most chemicals, ensuring minimal contamination during processes.
Temperature Range: Can operate effectively at temperatures up to 1650°C.
Low Thermal Expansion: Minimal expansion or contraction with temperature changes, ensuring dimensional stability.
Non-Reactive: Does not react with the materials being processed, preserving sample purity.
Versatility: Suitable for a wide range of applications including metallurgy, glass manufacturing, and laboratory experiments.

(High purity graphite crucible)

Specifications of High purity graphite crucible

High purity graphite crucibles offer excellent performance for demanding applications. The graphite purity matters a lot. Crucibles typically use 99.9% pure material or better. This high purity minimizes contamination. It ensures consistent results in sensitive processes. Impurities can ruin melts.

Density is another key factor. These crucibles are very dense. High density graphite resists oxidation better. It lasts longer under intense heat. Density also improves strength. Crucibles need to hold heavy loads without cracking. Good strength prevents breakage during use.

Thermal properties are critical. Graphite transfers heat very well. This allows for fast heating and cooling cycles. It saves energy. The material also handles extreme temperatures easily. Crucibles withstand over 3000°C in inert atmospheres. They resist thermal shock too. Rapid temperature changes won’t crack a quality crucible.

Size options are available. Crucibles come in many shapes and dimensions. Common forms include cylindrical and conical. You can find small lab sizes and large industrial ones. The inner and outer diameters vary. Height changes based on capacity needs. Wall thickness is designed for strength and heat flow.

Surface finish is important. Crucibles often have a smooth inner surface. This finish prevents material sticking. It makes cleaning easier after each use. Some applications need a specific surface texture.

These crucibles serve many industries. They are vital in crystal growth. Metal smelting uses them extensively. High purity crucibles are essential for semiconductor production. Chemical vapor deposition relies on them. They work well in vacuum furnaces and inert gas environments.

(High purity graphite crucible)

Applications of High purity graphite crucible

High purity graphite crucibles handle extreme heat very well. They resist chemical reactions too. This makes them perfect for many demanding industrial jobs. Melting metals is a major use. Foundries rely on these crucibles to melt gold, silver, platinum, and other precious metals. They also melt reactive metals like titanium and zirconium. The high purity graphite prevents contamination. It keeps the metal clean. Semiconductor makers need ultra-clean materials. High purity graphite crucibles are essential here. They melt silicon crystals. They process gallium arsenide and similar compounds. The crucible’s purity stops unwanted elements from getting into the silicon. This ensures top quality chips and solar cells. Glass manufacturers also use these crucibles. They melt special optical glass. They melt glass for lenses and scientific equipment. The crucible withstands the intense heat needed. It doesn’t react with the molten glass. Chemical plants need tough equipment. High purity graphite crucibles work for high temperature chemical reactions. They handle corrosive materials. They are used in research labs too. Scientists study new materials under extreme conditions. They trust these crucibles for reliable results. The crucibles last longer than many alternatives. They offer good thermal shock resistance. Sudden temperature changes rarely break them. This saves money over time. They are strong and durable. Industries choose them for consistent performance. Their ability to maintain purity under stress is unmatched. This reliability is critical for high value production.

Company Introduction

Welcome to Teen-Hot,a leading global supplier of high-quality crucibles designed for various industrial applications. We offer an extensive range of crucibles, including graphite, ceramic, and metal varieties, tailored to meet the needs of foundries, laboratories, and manufacturers. Our products are renowned for their durability, thermal resistance, and precision engineering, ensuring optimal performance in melting and heat treatment processes. With advanced manufacturing facilities and a commitment to excellence, we provide reliable, cost-effective solutions worldwide. Partner with us for your crucible needs and experience superior quality, expert support, and timely delivery.

If you have any questions, please feel free to contact us(nanotrun@yahoo.com).

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of High purity graphite crucible

What’s the highest temperature this crucible handles?
It withstands temperatures up to 2000°C in inert gas or vacuum. Air exposure lowers this limit significantly. Keep it below 1900°C for longest life. Sudden temperature changes crack it.

Why is high purity graphite important?
Impurities contaminate your melt. High purity means less silicon, ash, or metals leach into your material. This keeps your final product clean. It’s essential for sensitive processes like growing crystals or refining precious metals.

How long does one crucible usually last?
Lifespan varies a lot. It depends on the temperature, the material melted, and how often you heat and cool it. Gentle cycles and lower temperatures make it last longer. Harsh conditions wear it out faster. Expect multiple uses under good conditions.

Can I melt any metal in this?
No. It works great for gold, silver, copper, and many alloys. But avoid metals that form carbides easily, like iron or aluminum. These react with the graphite. They damage the crucible and ruin the melt.

How do I clean it after use?
Let it cool completely first. Gently remove leftover slag or metal residue. Use a soft brush or compressed air. Never use water or harsh chemicals. They can cause cracks or weaken the graphite. Store it dry and dust-free.

(High purity graphite crucible)