Composite modification machine, modification and disintegration machine, iron oxide
Release time:
2026-08-19 09:06
Source:
Fine powders such as iron oxides tend to form soft agglomerates during filtration, drying, and storage, which can lead to the apparent presence of very fine primary particles during characterization—yet these agglomerates prove difficult to disperse in practical applications. The role of an ultrafine disperser is not to grind crystals into infinitesimally small sizes, but rather to break open the agglomerate structures formed by van der Waals forces, electrostatic interactions, or the drying process. When a modified dispersing machine also performs surface treatment, it must further ensure that, after the addition of additives, no wet agglomerates re‑form.
The honeycomb mill can continuously disintegrate materials through high‑speed gas–solid flow and mechanical action, with hot air or modifying agents added as required by the process. Iron oxides are color‑sensitive materials; therefore, the materials in contact with the equipment, the operating temperature, and the intensity of mechanical action must all be carefully controlled to prevent impurities and excessive processing from compromising color quality. When evaluating dispersion performance, it is insufficient to rely solely on single‑parameter measurements. D50 should also be evaluated in conjunction with particle size distribution, microscopic morphology, colorimetric properties, and downstream dispersion tests. For new oxide materials, it is recommended to first conduct small-scale trials at varying linear velocities and temperatures to establish process parameters, followed by industrial-scale continuous production.
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