Quartz glass, made from high-purity silicon dioxide (SiO₂ content ≥99.9%), is a specialty glass that holds a high-end and irreplaceable position in the glass material system due to its unique physical and chemical properties. It is known as the “king of glasses.”
Uniqueness of quartz glass
① Quartz glass is the representative of high-end glass. It is the only glass material that can be used stably for a long time at temperatures above 1000℃ (softening point is about 1700℃), while ordinary soda-lime glass can only withstand temperatures of about 500℃. The purity and performance of quartz glass significantly surpass those of ordinary glasses (such as impurity-containing soda-lime glass), and this makes quartz glass a critical foundational material in cutting-edge fields, such as: optics and semiconductors.
②The preparation of quartz glass requires high-purity quartz sand (impurity content <50ppm), and complex processes (such as gas refining and plasma melting), with high technical barriers.
Application of quartz glass
· Optical field
Optical fiber preform (core material for optical communication, transmission loss <0.2dB/km);
Optical lenses (telescopes, lithography objective lens, achieving nanometer-level resolution);
Laser nuclear fusion target window (resistance to high-energy radiation damage).
· Semiconductors and Electronics
Single-crystal silicon growth crucible (withstands 1420℃, metal contamination-Free);
Etching equipment lining (resists fluoride corrosion);
High frequency insulation device (5G communication substrate).
· Energy field
Solar photovoltaic cell encapsulation (light transmittance >95%, service life up to 25 years);
Photocatalytic reactors (degrading organic pollutants);
Nuclear reactor observation windows (gamma-ray resistant).
· Aerospace field
Missile fairing (wave transmittance >90%, withstands 3000℃ aerodynamic heating);
Spacecraft porthole (resistant to cosmic rays and micrometeoroid impacts).
· Medical field
Medical laser scalpel (delivers high-energy laser beam).
Performance comparison between quartz glass and ordinary glass
| Glass type | Quartz glass | Ordinary soda-lime glass |
| Main components | SiO₂（≥99.9%） | SiO₂（70-75%）+ Na₂O、CaO |
| Maximum temperature | 1000-1100℃ | ＜500℃ |
| Transmittance range | 185-4000 (Full spectrum) | 350-2500nm (UV cut-off) |
| Thermal expansion coefficient | 5.5×10⁻⁷/℃ | 9×10⁻⁶/℃ |
| Resistivity | ＞10¹⁶Ω·cm | 10¹²Ω·cm |
| Acid resistance | Does not react with any acid (except hydrofluoric acid) | Easily corroded by acid |
Qingdao Epic Powder Machinery Co., Ltd. is a specialized manufacturer of powder processing equipment, with years of production experience and technological expertise.
Our products include: powder grinding equipment, classifying equipment, modification equipment, and related auxiliary systems. The ball mill is one of our core grinding machines, renowned for its stable quality and competitive price. It is ideally suited for quartz grinding, due to its ceramic lining that minimizes iron contamination—a critical advantage given quartz’s high Mohs hardness of 7. This design ensures our ball mill suitable for high-purity quartz production, and it has consistently received high praise from our customers over the years.
If you are purchasing ball mill or other powder processing equipment, please contact Epic Powder. We will provide a one-stop solution from equipment selection, solution design to installation and commissioning, and after-sales service.
Contact us, and let our professional equipment make your powder processing more efficient and intelligent!
