Application of ST Silo Granulate Dryer
Non hydroscopic polymers, e. g. PE, PS and PP can build up surface moisture caused by condensation usually caused by poor storage conditions, large storage temperature differentials and high humidity. Pre-heating removes this condensed moisture from the granulate. It improves flow behaviour of the granulate, increases plastification and final product quality.
Silo Granulate dryers work both continuously and intermittently. They operate on the circulating air principle and are constructed for drying both thermoplastic and/or rubber granulate where a residual moisture of 0,1% to 0,09% is required. Greater amounts of granulate are channelled through continuously.
The ST 120 to ST 4000 Silo Granulate Dryers (hot air dryer) is simple in operation and durable. Reliable and silent, their excellent insulation saves energy. Available in various sizes.
The design and construction of special Granulate Dryers is possible at any time. The Granulate Dryers are individually produced for specific applications.
The dryer is loaded manually from above, or with a conveyor installed above. The granulate is dried by a strong air flow which is blown into the bottom of the silo and sucked out at the top of the silo. Due to a manual adjustable air distributor system a part fresh air can be sucked and cleaned by a filter exhaust air will be blown out by tube fitting. For better cleaning of the internal silo, e. g., a material or colour change, a cleaning flap is provided.
The discharge of dried material takes place in the bottom of the dryer can be controlled by the manual opening of a slide valve, or with a suction feeder or screw conveyor. A corresponding flange can be mounted on the discharge slide valve upon request. Loading should take place continuously, the passage time of the granulate in the dryer is critical for the final level of dryness.
Our guarantee does not necessaraly cover failure in service as we have no control or influence over operating conditions. We also except no responsibilty for subsequential loss!