Agate Grinding Balls for Lab Planetary Ball Mill

Short Description:

Agate is a microcrystalline variety of silica, chiefly chalcedony, characterised by its fineness of grain and brightness of colour. High purity natural Brazilian agate (97.26% SiO2) grinding media balls, highly wear-resistant and resistant to acids (except HF) and solvent, these balls are used whenever small quantity of samples need to be grinded without contamination. Different sizes of agate grinding balls available: 3mm to 30mm. The grinding media balls are extensively applied to in the fields of Ceramics, Electronics, Light Industry, Medicine, Food, Geology, Chemical Engineering and so on.

Product Detail

Product Tags


Highly polished, smooth, easy to clean, low abrasion to the equipment.

High mechanical strength, good toughness, impact resistance, no broken beads.

In order to prevent excessive abrasion, the hardness of the grinding jars used and of the grinding balls must be higher than that of the material used. Normally, grinding jars and grinding balls of the same material should be chosen.

Technical Datas

Dimension:Dia 3/5/8/10/15/20mm.
Main Material:agate -SiO2
Abrasion Resistance: Good
Density:2.65 g/m³


● Chemical Composition

Composition SiO2 MgO+CaO+Mn2O3
Wt% ≥97.26 ≥2.74

● Typical Properties

Specific Gravity g/cm3 Bulk Density kg/L Hardness Moh's Elastic Modulus Gpa Color
≥2.65 ≥1.5 7.2-7.5 ≥70 Ivory white, gray, and other natural colors

Available size: from 1mm-30mm.

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