Milling & Milling Media
The Technox and Dynallox range of ceramic materials provide excellent corrosion, erosion, abrasion, and thermal shock resistance, for a wide range of milling related applications.
These materials offer significant performance improvements over steels, metallic alloys and weld overlays, in a wide range of applications where particle size reduction is the primary function of the process.
Milling Media
Technox®Y-TZP zirconia milling media is a high density, high toughness and super hard media, which has significantly better milling efficiencies, compared with other media such as Alumina, Soda Glass, and PSZ-Zirconia.
Zirconia Milling Media – The high wear resistance of Technox® Y-TZP zirconia milling media prevents ground materials from being contaminated, and increases the life of the media.
Features:
- High density (> 6.0 g/cm3) for high efficiency of dispersion and pulverisation.
- Media manufactured using a special process to avoid flat-topping or ring-shaped equators
- Typically over 15 times longer life then alumina media.
- High fracture toughness ensures media wear evenly, reduces breakage and prevents screen-blinding problems.
- Fine grain size for ultra high strength.
| Media Type |
Soda Glass |
Zircon (Zirconium silicate) |
Alumina |
Mg PSZ Zirconia |
Technox® Y-TZP |
| Typical Industry Costs ($/kg) |
3 – 23 |
30 |
8 – 15 |
150 |
150 |
| Density (g/cm3) |
2.5 |
3.8 |
3.6 |
5.6 |
>6.0 |
| Fill Density (kg/l) |
1.6 |
2.4 |
2.2 |
3.5 |
3.6 |
| Wear Resistance |
Bad |
Fair |
Fair |
Good |
Excellent |
| Life of Media(Hrs) |
30 -60 |
200 |
150 |
1500 |
3000 |
These values are typical and are for guidance only
Typical Running Costs for a 35-litre Mill Running 3,000 hrs/annum
| Media Type |
Soda |
Zircon (Zirconium silicate) |
Alumina |
Mg PSZ |
Technox® |
| Amount of media (kg) |
45 |
70 |
65 |
100 |
100 |
| Fill Cost ($) |
135 – 1035 |
2100 |
520 – 975 |
15000 |
15000 |
| Re-fills pa. |
100 – 50 |
15 |
20 |
2 |
1 |
| Cost of media pa ($1000′s) A |
13 – 52 |
31.5 |
10.4 – 19.5 |
30 |
15 |
| Time to Re – Fill the mill (Hrs) |
8.5 |
8.5 |
8.5 |
8.5 |
8.5 |
| Total time pa. |
850 – 425 |
128 |
170 |
17 |
8.5 |
| Estimated Labour Cost pa (2 men @ $80/hr) $1000′s B |
136 – 68 |
20 |
27 |
2.7 |
1.4 |
| Loss of Opportunity pa $1000′s C |
136 – 68 |
20 |
27 |
2.7 |
1.4 |
| Total costs per year A + B + C ($1000′s) |
285 – 188 |
71.5 |
64.4 – 73.5 |
35.4 |
17.8 |
| Comments | Frequent breakage and fracture, Contamination with SiO2Rinsing Takes time | Frequent breakage and fracture, Contamination with SiO2 & Al2O3Rinsing Takes time | Frequent breakage and fracture, Contamination with SiO2 & ZrO2Rinsing Takes time | Frequent breakage and fracture, Contamination with MgO | Absence of breakage and fracture, Absence of contamination, Rinsing takes little time |
These values are typical and are for guidance only
Typical Applications
1. High Strength & High Toughness Products
|
3. Prevention of Product Contamination
|
2. Wear & Corrosion Resistant Products
|
4. Ceramics
|
Comparative Wear Rates
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Standard sizes available from ø0.05 to ø35mm and cylinders from 3 x 3 to 20 x 20mm
