Because super fine Magnetite powder has magnetic and colorable character, it is mainly used for producing magnetic toner and magnetic printing ink for laser printers and copiers. In this field, more special demands are needed, such as granularity, hue, magnetic performance and particle distribution, etc.
Unimagnet adopts the magnetite powder producing line of its own intellectual property to produce super fine magnetite powder suitable for producing magnetic toner and magnetic printing ink for various types laser printer and copier. The super fine magnetite powder’s particle size can reach nanometer grade, and the stable crystalloid shape can ensure high quality and stable magnetic performace.
Typical products of magnetite powder for printer
Item |
Unit |
UMMF-1 |
UMMF-2 |
UMMF-3 |
Saturation |
emu/g |
85 |
85 |
85 |
Remanence |
emu/g |
7.8 |
8.0 |
10.5 |
Coercivity |
Oe |
50-60 |
70-80 |
100-120 |
Particle size |
μm |
0.25-0.30 |
0.30 |
0.30 |
Oil absorption |
mg/100g |
18-20 |
20-22 |
23-25 |
Specific surface |
m2/g |
7 |
8 |
9 |
Tapped density |
g/cm3 |
0.85 |
0.85 |
0.85 |
FeO contain |
Wt% |
23.5-25.5 |
23.5-25.5 |
23.5-25.5 |
Tfe contain |
Wt% |
68-70 |
68-70 |
68-70 |
PH |
|
7.0 |
7.0 |
7.0 |
Particle shape |
|
Spherical |
Cubic |
Cubic |
Remark
Custom-build specs is welcomed.