Abstract
The purpose of this work was to investigate, whether silica extracted
from olivine can be used as a low-cost coating pigment of ink-jet paper.
Using nitric acid, amorphous silica was produced from olivine. The silica
was washed, dried, milled and treated in an ultrasonic bath to attain a
particle size suitable for paper coating (<10 µm). The yield of silica was
approximately 35 %. Coating colours were prepared from the silica and applied
to paper. The performance of the coating was analysed and compared to that
of commercial silica pigments and test printings were performed. The silica
coating produced from olivine performed well in comparison to that of the
other silica coatings tested, except for the brightness, which was slightly
lower than that of the reference silica coatings. This was apparently due to
a small iron content (0.2 wt-%) in the silica produced from olivine.
Nonetheless, the study shows that it is possible to produce silica pigments
from olivine that has a potential to be used in matt coating ink-jet papers.
However, more work on process development is needed to improve the
brightness and yield of the silica as well as lower the particle size further
to improve the properties of the coating.
| Original language | English |
|---|---|
| Pages | 349-356 |
| Publication status | Published - 2013 |
| MoE publication type | Not Eligible |
| Event | 4th International Conference on Accelerated Carbonation for Environmental and Materials Engineering, ACEME 2013 - Leuven, Belgium Duration: 9 Apr 2013 → 12 Apr 2013 |
Conference
| Conference | 4th International Conference on Accelerated Carbonation for Environmental and Materials Engineering, ACEME 2013 |
|---|---|
| Abbreviated title | ACEME 2013 |
| Country/Territory | Belgium |
| City | Leuven |
| Period | 9/04/13 → 12/04/13 |
Keywords
- nitric acid
- mineral
- carbonation
- magnesium
- silicate