As foundry sand preparation and molding plants become increasingly high-speed and quality-oriented, the control of return sand temperature is essential.  the Simpson Multi-Cooler is specifically designed to provide the mixer group with sand that is cooled to temperatures that allow optimal mulling, premixed to eliminate return sand variations and with a moisture content controlled within tight tolerances.  The result is optimal mulling and high-quality, profitable castings.

DESCRIPTION

Continuous sand cooler and pre-conditioning system operating on the principle of evaporative cooling.

APPLICATION

Sand systems with return sand temperature above 49°C and/or wide variations in return sand properties.

FEATURES

• Pre-mixing with back-blending and controlled retention

• High-efficiency cooling to below 49°C or 10°C over ambient

• Discharge moisture of 2.0% +/-0.2%

1. A sophisticated control system measures the temperature of the exhaust air and the conductivity of the retained sand to add precisely the required amount of water.  This achieves the desired cooling and residual moisture content.

2. Counter-rotating mixing tool sets mechanically fluidize the retained sand so that cooling air, provided by the inlet blower, and water can be in intimate contact with the sand; thus providing for efficient and effective cooling.