LANXESS continues to optimize its global production network for the manufacture of iron oxide pigments. Through targeted “debottlenecking” at the Krefeld-Uerdingen site, the specialty chemicals company has increased the product availability of its Bayferrox and Colortherm micronized red pigments by more than 5,000 metric tons per year. “In the paints and coatings industry and also for plastics applications, we see a continuously rising demand for high quality pigments which offer good dispersion characteristics. We have therefore increased product availability for our customers,” says Holger Hüppeler, head of the LANXESS Inorganic Pigments business unit.
LANXESS uses its proprietary Laux process to manufacture Bayferrox and Colortherm red pigments at its site in Krefeld-Uerdingen, Germany. Black pigments are heated up to 800 °C and oxidized to red pigment. Since the Copperas process, which was an alternative, is no longer used worldwide on a market-relevant scale, the much more environmentally friendly Laux process is the only production process applied for iron oxide red pigments that includes a calcination step at very high temperatures.