Inorganic filler drying equipment, disintegrating equipment, mixing and modifying machine

Release time:

2025-05-09 08:42

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In the field of organic polymer-based materials, calcium carbonate, with its unique advantages, has become the most widely used inorganic filler. However, to fully realize its performance potential, advanced surface modification techniques, especially powder modification equipment, must be used to enhance its compatibility with polymer substrates and expand its applications in numerous fields such as rubber, food, papermaking, cosmetics, inks, plastics, and coatings.

Currently, surface modification of calcium carbonate mainly adopts a process system based on chemical coating and supplemented by mechanochemistry. First, the calcium carbonate is dried, and then the metered stearic acid and calcium carbonate are transported to the modifier via airflow. The hot air in the equipment removes surface free water while simultaneously dispersing and depolymerizing the materials, allowing the stearic acid to fully contact the calcium carbonate particles and form a monolayer coating. The amount of stearic acid used is typically 0.8%-1.5% of the mass of calcium carbonate, and the reaction temperature is controlled at around 100℃. To improve the modification effect, the stearic acid can be fully atomized beforehand, and other auxiliaries can be added in appropriate amounts during equipment operation to ensure that the modifier is uniformly dispersed and fully interacts with the calcium carbonate particles.

In large-scale industrial processing, honeycomb mills are commonly used as coating modification equipment. The honeycomb mill is a continuous composite modifier specifically designed for the production of ultrafine powders with strict requirements on particle size distribution. It features a simple process, small footprint, and a coating rate that typically reaches 99.2%, with an activation rate of 99.8%, meeting the requirements of different fields for active inorganic powder materials requirements. Selecting professional powder modification equipment not only improves material performance but also reduces production costs, increases production efficiency, and provides strong support for its application in high-end fields.

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