TiO2 BASED SCRUBBING GRANULES, AND METHODS OF MAKING AND USING SUCH TiO2 BASED SCRUBBING GRANULES

摘要

TiO₂ based scrubbing granules, and methods of making and using such TiO₂ based scrubbing granules are described. TiO₂-based scrubbing granules include granulated TiO₂ and about 0.5% to about 20% dry weight inorganic salt binder. Other TiO₂ based scrubbing granules include unsintered granulated TiO₂ and about 0.5% to about 20% dry weight inorganic salt binder. Inorganic salt binder include sodium aluminate. Methods of making TiO₂ based scrubbing granules include i) combining TiO₂ particles with inorganic salt binder to form TiO₂-binder mixture comprising from about 0.5% to about 20% dry weight binder; ii) granulating the TiO₂-binder mixture; and drying the granulated TiO₂-binder mixture to form TiO₂-based scrubbing granules. Methods of using such TiO₂-based scrubbing granules include introducing TiO₂-based scrubbing granules to remove adherent deposits on an inner surface of a reactor or heat exchanger during processes of forming TiO₂ particles and finishing the formed TiO₂ particles into finished pigment products.