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Simpson Speedmullor Batch Mixer

In medium- to large-sized sand systems, higher volumes of throughput demand greater productivity from the sand preparation plant. The Speedmullor® is carefully designed and proportioned to achieve maximum mixing performance and energy efficiency while still providing some versatility in applications typical to these sizes of sand systems.


High-speed, high-intensity, muller-type mixer for batch operation.


Medium- to large-sized sand preparation systems that still require some versatility in throughput or product.


  • The original Beardsley & Piper Speedmullor
  • High productivity
  • Smaller batch and shorter cycle times
  • Secondary cooling

Intensive mulling in a Speedmullor is accomplished by horizontally mounted muller wheels compressing the sand against the mixer wall. Shearing and blending is provided by a series of plows mounted on the mixer crosshead. Rotating at high speed, the combination of muller wheels and plows provide full development of the bentonite and other additives.

Productivity Makes You More Competitive

The Speedmullor combines all the best features of all the high-intensity batch mixers into a single design — the mixing performance and energy efficiency of mulling with the productivity of a high-speed, high-intensity mixer. The Speedmullor will produce better molding sand, more consistently and at less cost than turbine mixers of the same capacity.


Simpson Speedmullor 100B 250 Front View


Simpson Speedmullor 100B 250 Inside Close Up

Simpson Speedmullor 100B 250 Under View Close Up