Core Sand Treatment
Core Sand Mixer
The KLANN Core Sand Mixers are compact batch mixers with a high productivity, which are offered in a varity of volumes. The sand removal is executed by tilting of the mixer drum. This design has no flaps or slides which could plugg or block. The arrangement of the mixer tools and the design of the drum bottom ensure intensive mixing with low power consumption.
The mixers are available with volumetric or gravimetric dosing devices.
Sand Deduster/Cooler
The quality of core sand is dependant on the binder and the processing equipment, but the quality of raw sand and temperature are also crucial. Dust particles in the sand not only decreases the gassing capacity of the core but also consumes more binder due to the high specific surface. To separate the dust from the sand KLANN provides fluidised bed separators, which can also be used to cool or heat raw sand to optimum temperatures in the range of 20 - 30 °C.
Core Fraction Recycling Unit
To avoid deposit costs for core residues Klann developed a special recycling unit which recovers the sand in different process steps. After grinding of the agglomerates, the impurities are separated by screening and the dust fraction is taken out by air flow separation. After this recycling process up to 10 % of the raw sand feed can be replaced by this recycled core-sand.