zirconia ball 1.High density strong tenacity 2.High hardness anti-high temperature . 3.Good Acid/Heat Pro
specification
TZP grinding media are made from high quality materials with advanced technology processing which suitable for all kinds of mills such as micro-mill, attritor-mill, vibratory mill and ball mill to grinding and disperse effectively and economically of electronic slurry, ceramic powder, magnetic material, battery material, rare-earth material, nonmetal ore, painting, dye, ink, calcium, titanium, pesticide, Food and pharmaceutical raw materials and etc.
Compared with other traditional grinding media such as alumina media, zirconium silicate media, steel media, agate media and glass media, TZP grinding media have high density, high toughness and super hardness advantages. Therefore, they have superior grinding efficiency over all traditional grinding media.
TZP material and its performance index
TZP zirconiumceramic’s main composition is high-purity zirconium (99.8% and above) with 3mol% yttrium as a stabilizer to form a stable tetragonal construction, their compositions are shown as blow:
component | ZrO2 (wt%) | Y2O3 (wt%) | Al2O3 | Fe2O3 | SiO2 | TiO2 | |
properties | 94.80±0.20 | 5.2±0.20 | <100ppm | <50ppm | <450ppm | <50ppm | |
component | Na2O | K2O | CaO | MgO | Cl- | BET() Specific Surface Area | Particle size D50(um) Grain Size |
properties | <100ppm | <100 ppm | <100 ppm | <100 ppm | <800 ppm | 35±3 | <0.5 |
Standard specification
(mm)Grinding media Specification | Forming technique | Note |
Spare | ||
Φ0.3-0.5, Φ0.6-0.8, Φ1.0-1.2 Φ1.4-1.6, Φ1.8-2.0, Φ2.2-2.4 Φ3.0, Φ4.5, Φ5.0, Φ6.5, Φ7.0 Φ8.5, Φ10, Φ12, Φ15, Φ20, Φ25, Φ30, Φ40, Φ50, Φ60 | Rolling | Φ8.0, Φ10 Φ8.0, Φ10 and above specifications can provide as steel mold with dry pressing grinding media. There are two kinds of Dry-type isostatic molding grinding media as with/without cap. |
Dry-type isostatic pressing | ||
Cylinder | Dry pressing with steel mould + wet isostatic pressing | |
Φ7*7 Φ7.5*7.5 Φ9.7*9.7 Φ12.7*12.7 Φ15*15 Φ20*20 |
*New molds are needed for making other non-standard grinding media
Products Grade, density, wearing rate and appearance
parameters shown as below
Product category | Performance index | |||
Quality grade | (g/m³) Density | (ppm/hr) Wear rate | appearance | |
Φ3 Spherical grinding media of Φ3mm and above by CIP forming | Superior product | ≥6.03 | ≤1 | No cracking, no edges, no Variegated, no water absorption |
Qualified product | ≥ 6.0 | ≤ 8 | No cracking, obvious edges, minor variegations allowed, no water absorption | |
Φ3 Grinding media of under Φ3 by rolling | Superior product | ≥ 6.0 | ≤ 1 | No cracking, good roundness, minor variegations allowed, no water absorption, |
Qualified product | ≥ 5.95 | ≤ 5 | No cracking, average roundness, minor variegations allowed, no water absorption | |
Ceria Grinding media | Superior product | ≥ 6.2 | ≤ 10 | No cracking, no breakdowns and corners transition, no water absorption |
TZP zirconium ceramic is acknowledged with its best mechanical properties at room temperature, when compared with other ceramics. Its main properties are shown in the following table:
Items | Unit | Typical value |
component | wt% | 94.8% ZrO2, 5.2% Y2O3 |
Hardness | Kg/mm2 | >1200 |
Density | g/cm³ | ≥ 6.00 |
Crushing Load | KN | ≥ 15(Φ5mm) |
Fracture Toughness | Mpa.m0.5 | 8 |
High qulity grinding zirconia ball
