When sand come out from knock out its temperature is high. The quantity of heat to be removed depends on the sand to metal ratio and the holding time of metal in the mould. That sand sent to sand cooler through air valve for cooling. Thorough cooling is maintained by exposing the sand to water cooling pipes running the length of the sand bed. This sand drops on fin tubes where it comes direct contact with cooling tubes. Cold water is continuously circulated in fin tubes that causes heat transfer from sand to water. At the bottom bed nozzles are provided which shoots air at high pressure is supplied by a Centrifugal fan by adjustable damper valves, this cause's heat transfer of sand also passes sand from one place to another place. Since there are no moving parts in contact with the sand, maintenance is at an absolute minimum. The unit is supplied with inspection windows, flanged discharge connection mounted on the side and adjustable exhaust damper valves for connection to a dust extraction system (optional extra), which must provide a slightly negative pressure over the fluidized sand bed.
• Pre-Mixes and Homogenizes.
• Ease of maintaining permeability and hardness of the mould
• Low Moisture Levels.
• Continuous online use of return sand.
• Reduction in rejection of casting.
• Saves consumption of bentonite
• Excellent surface finish of casting
• Increased productivity
• Low maintenance costs
Range: 10 Tons / hr. to 25 Tons / hr.