High-Temperature Quartz Cylindrical Crucible

Cylindrical Crucibles

These high-purity quartz cylindrical crucible are made from 99.86% high-purity silicon dioxide (SiO₂) fused silica material, using modern precision ceramic technology. They possess excellent high-temperature resistance, thermal shock resistance, and chemical corrosion resistance. The maximum temperature resistance can reach 1680°C. Suitable for laboratory use, high-temperature electric furnaces, vacuum furnaces, induction melting furnaces, and other equipment, they are widely used in the smelting of metals such as silicon, aluminum, and copper, as well as in the glass, ceramics, and new materials industries.

This product line is complete in specifications and supports customization based on drawings or samples. We can also provide cylindrical crucibles made of different materials such as high-purity quartz, mullite, and corundum (alumina) to meet various temperature and process requirements.

Product Features

1. Wide Temperature Range and Excellent Thermal Shock Stability

Withstands temperatures ranging from 1600℃ to 1750℃ (quartz 1680℃, mullite 1600℃, corundum 1750℃), with a low coefficient of thermal expansion and low thermal conductivity. It exhibits outstanding resistance to rapid heating and cooling, and is not prone to cracking at high temperatures.

2. Strong Thermal Shock Resistance and Long Service Life

The product has a low coefficient of thermal expansion and excellent thermal shock resistance. It can withstand rapid heating and cooling conditions without cracking or deformation, significantly extending the crucible’s service life and improving production stability.

3. Smooth Surface, Non-stick and Easy to Clean

Utilizing a high-temperature sintering process, the inner and outer walls are smooth and delicate, preventing molten material adhesion, slag shedding, and sample contamination. This facilitates cleaning and reuse, effectively improving experimental and production efficiency.

4. Supports multi-specification customization, stable supply

With mature production technology and a complete inventory system, we can provide a variety of specifications and sizes. We can also customize special sizes, materials and thicknesses according to customer requirements. The supply cycle is stable, meeting the needs of bulk purchases.

Material	Max Service Temperature	Main Composition
High-purity quartz	1680℃	SiO₂ content ≥ 99%
Mullite (60%~70% alumina)	1600℃	Al₂O₃ content 60~70% SiO₂ content 30~40%
99% alumina (Corundum)	1750℃	Al₂O₃ content ≥ 99%
Cordierite sagger	1300℃	Al₂O₃ content ~52% SiO₂ content ~40% MgO content ~8%
Zirconia	2200℃	ZrO₂ + HfO₂ content ≥ 95%
Corundum-mullite	1700℃	Al₂O₃ content 75~85% SiO₂ content 15~25%
Zirconia-mullite	1600℃	ZrO₂ content 10~40% Al₂O₃ content 45~70% SiO₂ content 10~20%
Magnesia-alumina (Magnesia spinel / Mag-Alumina)	1800℃	MgO content 3~15% Al₂O₃ content >90% SiO₂ content <5%
Zirconia-alumina (Zirconia-corundum)	1800℃	ZrO₂ content 20~40% Al₂O₃ content 60~80%

Application Areas

• Non-ferrous metal and silicon smelting: Suitable for melting and refining metals such as silicon, aluminum, and copper, and their alloys.
• Photovoltaic and semiconductor industry: Widely used as ingot support containers in the polycrystalline silicon production process.
• Optics and special glass manufacturing: Used as melting crucibles for optical and special glass, resistant to high temperatures without affecting the glass’s light transmittance.
• Ceramics and binder industry: Used as a binder for ceramic grinding wheels and a sintering carrier for refractory materials.
• Laboratories and research institutions: Used in high-temperature chemical analysis, material synthesis, and other experimental scenarios.

Company Profile

A professional enterprise specializing in heat treatment technology services and the R&D, manufacturing, and sales of high-temperature electric furnaces.

The company focuses on developing high-temperature electric furnaces covering a full temperature range of -100℃ to 2600℃. Its products include experimental electric furnaces, vacuum atmosphere furnaces, industrial kilns, and medium-frequency induction heating equipment. Main products include box furnaces, tube furnaces, lifting furnaces, pusher kilns, bogie furnaces, rotary kilns, tunnel kilns, and various specialized medium-frequency furnaces.

The company adheres to technological innovation and has passed ISO9001 and EU CE certifications. It owns 21 registered trademarks, 29 patents, and 27 software copyrights.

Payment Methods

TT

Shipment Methods

The electric furnace is packaged in three layers: first wrapped in foam paper, then wrapped in plastic film, and finally packed in a wooden crate.

Frequently Asked Questions (FAQ)

1. How to choose between the three materials (quartz, mullite, and corundum)?

Choose according to your actual operating temperature and environment: For long-term operating temperatures below 1600℃, high-purity quartz is recommended; for temperatures around 1600℃, mullite is suitable; for temperatures above 1700℃ or extremely high corrosion resistance requirements, 99% corundum crucibles are recommended.

2. Which high-temperature furnace equipment is this suitable for?

This product is suitable for box furnaces, muffle furnaces, tube furnaces, vacuum furnaces, atmosphere furnaces, induction melting furnaces, and various laboratory high-temperature heating equipment.

3. Is the product prone to cracking?

Fused silica has a low coefficient of thermal expansion and good thermal shock resistance, exhibiting good crack resistance under reasonable usage conditions.

4. Do you support custom sizes?

Yes, we can customize production according to customer-provided size requirements, drawings, or samples.

5. Are there other material options besides quartz?

We can provide ceramic crucibles made of different materials such as fused silica and alumina, depending on actual process requirements.