Union Process' S-50 Batch Attritor.
Union Process' S-50 Batch Attritor.

As the product can have no metal contamination, the 304 stainless steel tank is lined with polyurethane, the agitator shaft is plastic-sleeved stainless steel, and the stainless steel arms are zirconium oxide tipped and polyurethane coated.

 A Halar-coated product discharge assembly has been included with a plastic bar grid located on the bottom of the tank. The two-piece tank cover is constructed of stainless steel with a nylon coating facing the product.

 As multiple shaft speeds were desired, a variable frequency drive was provided. The milling system included an air diaphragm pump for circulation to improve grinding and to quickly discharge the mill.

The S-50 Attritor does not require any premixing, so naterial can be directly fed into the jacketed grinding tank, while temperature control can be maintained due to the use of the jacketed tank.