Entstaubung von titandioxidhaltigen Pulverlacken

Maximum dedusting of powder coatings containing titanium dioxide

Regardless of whether the branch is the automotive industry, metal coatings or outer facades and furniture: powder coatings have manifold applications in industry. Around 60% of all powder coating recipes contain titanium dioxide (TiO2). The maximum portion is about 30% and can be found above all in extremely bright shades of white. The European Commission is now demanding new limit values for titanium dioxide from 2021 onwards. With the TSP air classifier, Hosokawa Alpine presents a suitable solution for the effective dedusting of powder coatings that contain titanium dioxide.

"The TSP air classifier was designed especially for challenging classifying tasks.
The development phase focused on maximum precision of cut as well as aspects such as handling, safety, operation and installation costs."

The use and manufacturing of chemical products, including titanium dioxide, must conform with stringent registration, testing and approval procedures based on regulations and standards. These legal requirements ensure that these chemicals are not harmful to either health or environment when used in their intended applications.

In a proposed amendment, the European Commission has decided to classify certain products, among them titanium dioxide, which have at least 1% of particles and an aerodynamic diameter of ≤ 10 µm as possible carcinogenics (category 2) and to label end products with corresponding hazard statements. The transitional period until the new legislation is enacted expires on 1st October 2021.

 

TSP air classifier: maximum dedusting

Maximum precision of cut & easy cleaning

When grinding powder coating chips, Hosokawa Alpine relies on classifier mills from the ACM product line. With the TSP classifier, which in a separate system configuration can be installed downstream of the actual process, Hosokawa Alpine complies with the EU regulation to reduce titanium dioxide dust.

"The TSP air classifier was designed especially for challenging classifying tasks. The development phase focused on maximum precision of cut as well as aspects such as handling, safety, operation and installation costs", says Sylvia Braeunlein, Operations Director of the Chemicals Division at Hosokawa Alpine.

The critical superfine portion of < 10 µm is less than 1 % after classification with the TSP air classifier. The back-mixing-free product flow ensures a high degree of dedusting quality. The hinged housing permits optimum accessibility for fast and thorough cleaning and substantially minimises downtime.