Due to super fine Magnetite powder obtains both magnetic and colorant character, which is mainly used for producing magnetic toner and magnetic printing ink for laser printers and copiers. In this field, more special demands were needed, such as granularity, hue, magnetic performance and particle distribution etc.
Unimagnet adopts the magnetite powder producing line of its own intellectual property fo produce super fine magnetite powder suitable for producing magnetic toner and magnetic printing ink for various type 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 |
Paricle 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.