Plus, it's a much more economical option than simply adding batch mixers or replacing an existing batch mixer with a larger model. Adding batch mixers to an operation can cause equipment, power and operating costs to soar and floor space to shrink. A Simpson Multi-Mull installation frequently requires 30 percent less headroom and 50 percent fewer components. The Simpson Multi-Mull is specially designed for automated, unattended sand preparation. There's no batching and no storage.
Sand goes directly to the molding machine hopper.
A probe in the hopper signals the Simpson Multi-Mull when the hopper is full and the feed system automatically shuts down. Then when more sand is needed, the muller is already full of prepared sand and may be restarted immediately. Better sand consistency is another key benefit of the Simpson Multi-Mull. As a result, some batches are undertreated and some are overtreated. Sand moves in a figure-eight pattern through the mixer.