The S-400 represents the largest batch Attritor ever built by the 66-year-old company. Batch Attritors can grind material up to ten times faster than traditional ball mills and do not require premixing, the company claims.
 
The largest ever batch Attritor has a new frame design with a pivoting drive cantilever which allows for removal of the agitator shaft for maintenance and cleaning. The Attritor features a 400 H TEFC inverter duty motor with a heavy-duty variable frequency drive controller.
 
The large tank accommodates 12,000 lbs of through-hardened carbon steel grinding media.
 
"As indicated by this request for the largest ever batch Attritor, our grinding system seems to be an emerging opportunity for the building materials and construction industries,” said Emery Li, sales manager, Union Process.