PRODUCTION OF RED IRON OXIDE PIGMENT

• Main Authors: HOLTMANN, Udo, BARDOUN, Alfred, KISCHKEWITZ, Jürgen, LI, Huajun, CZAPLIK, Waldemar, BLANKEMEYER-MENGE, Birgit, KETTELER, Guido, OEHLERT, Wolfgang
• Format: Patent
• Language: English; French; German
• Published: 08.01.2020
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; INORGANIC CHEMISTRY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; PREPARATION OF CARBON BLACK; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention relates to an improved process for producing red iron oxide pigments by the Penniman process with nitrate (also called nitrate process or direct red process) and to apparatus for implementing this process, and also to the use of the plant for producing red iron oxide pigments by the Penniman process with nitrate.