DISACOOL FEATURES

• Cooling of sand
• Cooling of castings
• Break-off of castings from the backscrap
• Dispursing lumps
• Pre-homogenizing of sand

The DISACOOL Process

Evaporation of water, which is sprayed into the drum or is residual in the mould sand, cools the sand and castings. A counter air flow through the drum removes the water vapour which is generated.

As the castings pass through the drum, they are tumbled gently together with the sand in a smooth process lasting 20-30 minutes. Sand lumps are broken and the sand is effectively blended. Sand is screened off in the drum end section through 30 mm diameter holes, and the cooled castings are discharged at the end of the DISACOOL.

Process Data

• Sand-to-metal ratio for the moulds entering the drum should lie in the range 1:5 to 1:10.
• Maximum recommended inlet temperature for ferrous castings is usually 700°C.
• Casting discharge temperatures are typically 70-90°C.
• Sand discharge temperatures are 45-55°C with moisture contents of about 1.5% (max. 1.8%).
  If the SCR System is used, the final sand temperature will be less than 45°C.
• Noise levels for the DISACOOL are less than 85dB(A)
  measured 1 m from the drum.