技术指标

Chemical & physical specifications

二氧化硅（SiO2）	99.31%
氧化铝（Al2O3）	0.36%
氧化铁（Fe2O3）	0.018%
氧化钙（CaO）	0.09%
氧化镁（MgO）	0.04%

Key Features and Advantages of Silica Pebbles as Grinding Media:

1️⃣ High Purity
With a SiO₂ content exceeding 99%, silica pebbles contain extremely low impurities and do not contaminate the material during grinding, ensuring consistent product quality.

2️⃣ Excellent High-Temperature Resistance
Capable of withstanding elevated temperatures with strong thermal stability, maintaining structural integrity under high-temperature grinding conditions.

3️⃣ Outstanding Chemical Stability
Resistant to acid and alkali corrosion, chemically stable in various industrial and chemical environments.

4️⃣ High Mechanical Strength and Wear Resistance
Featuring high hardness (Mohs hardness 7–8), strong compressive strength, and low abrasion rate, resulting in extended service life and reduced grinding costs.

5️⃣ Superior Electrical Insulation
Provides excellent insulating properties, suitable for electronic materials and related industrial applications.

6️⃣ Good Optical Properties
Offers good light transmittance and optical stability, making it suitable for applications requiring high purity and transparency.

体密/比重（Specific Gravity）	2.66g/cm3
硬度 （Hardness）	8 mohs
烧灼后颜色 ( Color after burning )	白色

常规尺寸

Normal Size

2-4cm	3-5cm	6-8cm	10-12cm
4-6cm	5-7cm	8-10cm	12-15cm

用途

Application

Silica pebbles feature high silica content, low iron content, high hardness, and low abrasion. As one of the most economical and practical grinding media, they are widely used in the ceramic industry for the production of sanitary ware, tableware, and ceramic tiles.

They are also applied in the manufacturing of white cement, glass, zirconium silicate, and other related industries.