Pigments drying takes filter cakes of organic pigments such as phthalocyanines and azo pigments, or inorganic pigments such as iron oxides, to a soft powder. Unlike dyes, pigments stay insoluble, so their performance depends on primary particle size and how easily they disperse. Manufacturers dry pigments without creating hard aggregates that would reduce colour strength in paints, inks and plastics.
To dry pigments, GEM recommends the Flash Dryer. Typical moisture is 50–75% in the feed and 0.5–2% after drying. Paddle Dryer, Rotary Vacuum Dryer and Direct / Indirect Rotary Dryer are used when the feed or site calls for it. Every project starts with a pilot trial on your own sample.
A flash dryer with feed disintegration dries pigment cake in seconds, keeping particles separated so the powder stays soft. Paddle and vacuum dryers suit solvent-wet or heat-sensitive pigments, and indirect rotary dryers suit coarser inorganic pigments.
| Typical feed moisture | 50–75% |
| Typical target moisture | 0.5–2% |
| Recommended dryer | Flash Dryer |
| Alternatives | Paddle Dryer, Rotary Vacuum Dryer, Direct / Indirect Rotary Dryer |
| Application area | Dyes, Pigments & Intermediates |
| Industries | Dyes, Pigments & Inks, Chemicals & Specialty Chemicals |
Soft, easily dispersed pigment reduces customers' milling energy and supports premium grades. Efficient drying of high-moisture cakes lowers energy cost, and good dust capture protects yield and the workplace.
Plants searching for a pigment dryer or comparing a pigment flash dryer usually need three answers: which dryer fits, what it costs to run, and how fast it pays back. For Pigments, we start from your throughput, current moisture (typically 50–75%) and the target (0.5–2%), trial a sample on the Flash Dryer, and return a sized recommendation with a budget quotation for your dyes and chemicals operation.
We trial your material in our pilot facility before any equipment decision, then size the dryer from real data.
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