The NEUE HERBOLD – Separation Tanks Type TB are used for separation of plastics with various densities, primarily for film flakes, granulate from PET bottles and other rigid types of plastics. Depending on the application, floating particles like film falkes or sinking particles like PET bottle flakes are separated from other high density plastics. The standard separation tanks are manufactured from stainless steel 1.4301.
The material is fed to the tank, esecially designed separation plates and paddle rollers transport the material through the water quench. Good separation result are achieved, due to the long retention time of the material in the tank.
Discharge systeme (Sink fraction)
In tanks for recovery of float fractions (specific gravity 1 g/cm³), the material discharge is handled by preumatical valves, which open up intermittenly to discharge the sink fractions. This discharge system is mainly used for small amounts of sink fractions. In cases of larger amounts of sink fractions, the discharge is handled by screws or scraper conveyors.
Separation tank (Floating tank) for PET
In tanks for recovery of sink fractions (specific gravity g/cm³), the material discharge is handled by oversized discharge screws.
As an option the tanks may be equiped with a heating system and an insulation on the outside. This special design pre-heats the PET-flakes and humidifys them with caustic soda solution and detergent. These tanks are made of stainless steel 1.4571.