PREPARATION OF RED IRON OXIDE PIGMENT

• Main Authors: HOLTMANN UDO, CZAPLIK WALDEMAR
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2018
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; DYES; INORGANIC CHEMISTRY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; PREPARATION OF CARBON BLACK; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

The invention relates to an improved method for preparing red iron oxide pigments in a Penniman process using nitrate (also called nitrate process or direct red process) as well as to devices for carrying out said method. 本发明涉及种用于在使用硝酸盐的彭尼曼法(还被称为硝酸盐法或直接红法)中制备氧化铁红颜料的改进的方法以及用于进行所述方法的装置。