A foundry struggled in getting core sand to break down in their existing system. The core sand had iron metallics mixed in that needed to be extracted. Though the foundry recognized GK equipment advantage in conveyors and feeders any new technology needed to be proved. - The GK VIBRA-MILL® was suggested as it is a total attrition mill and sand pre-conditioner in one. After testing one in their facility for just three months, the foundry believed in the ability of the VIBRA-MILL® and added it to their production line. - The High Energy unit can handle over fifteen tons per hour, while reducing a normal mixture of lumps and sand to original grain size.

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