MSE PRO 3 mm Alumina Milling Media Balls, 1 kg

Description of Alumina Milling Media Balls High performance wear resistant alumina ceramic balls are used in grinding and milling various materials. Different sizes of alumina grinding balls are available: <1mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 13mm, 15mm, 17mm, 20mm, 30mm, 35mm, 40mm. The alumina grinding / milling media balls are extensively used in the fields of Paints, Inks, Geology, Metallurgy, Electronics, Ceramics, Glass, Refractory, Chemical Engineering, etc. Technical Data for Alumina Milling Media Product # BA0201 Quantitiy 1 kg - 3 mm alumina balls, Approx. - 19,400 balls Main Material aluminum oxide ceramic Al2O3 > 92% Ball Diameters less than 1mm up to 40mm available Density 3.6 g/cm3 Shape sphere Color white Surface Condition polished Hardness >80 HRA Abrasion / Wear Resistance very good Compatible Materials medium-hard Additional Information on Alumina Milling Media Balls Pre-grinding the coarse, hard materials with large balls The use of many small balls will increase the fine portion of the materials when the grinding time is increased A higher percentage of the grinding balls will accelerate the grinding process Selection of the Size of Grinding Balls Type of feed material Ball diameter Hard samples feed particle size (~10 mm) 30 mm or 40 mm Medium size (<5 mm) 20 mm Fine material (0.5 mm) 10 mm or 5 mm or smaller Mixing and blending of dry or liquid materials 10 mm Mixing and blending of viscous samples 20 mm These are just some general recommendations: the size of grinding jars and grinding balls should be determined experimentally if necessary. Choice of Grinding Jars & Grinding Balls In order to prevent excessive wear abrasion, the hardness of the grinding jars and the grinding balls must be higher than that of the material used for grinding. Normally, grinding jars and grinding balls of the same material should be chosen. Grinding Jars and Balls Combination Grinding Jar Volume 100ml 250ml 500ml 1000ml Compatible Ball Weight 66g 165g 330g 660g Ball size/qty (pcs) 5mm 106 300 10mm 20 76 50 100 15mm 4 30 59 20mm 3 5 These values are just general recommendations: the size and number of balls should be determined experimentally. Calculated Ball Weight Ball diameter (mm) 5 10 15 20 30 40 Material Density Calculated ball weight (g) Agate 2.65 g/cm3 0.17 1.39 4.68 11.10 37.46 88.80 Alumina ceramic 3.8 g/cm3 0.25 1.99 6.72 15.92 53.72 127.34 Zirconium oxide 6.06 g/cm3 0.39 3.17 10.71 25.39 85.67 203.07 Stainless steel 7.93 g/cm3 0.52 4.15 14.00 33.20 112.05 265.60 PTFE 2.14 g/cm3 0.14 1.12 3.78 8.96 30.24 71.68 Tungsten carbide 14.95 g/cm3 0.98 7.82 26.41 62.59 211.24 500.73