Patent ID: 8328126

Claim:
A sizing roller screen apparatus for processing an ore feed received at an inlet, the ore feed including sized ore portions and oversize ore portions, the apparatus comprising: a roller screen having a plurality of adjacent screening rollers extending away from the inlet and supported to provide interstices therebetween for permitting passage of the sized ore portions between the adjacent screening rollers, the adjacent screening rollers being operably configured to rotate to cause a first sized ore portion to pass through the interstices while the ore feed is being transported along the roller screen away from the inlet; and a sizing roller disposed generally above an opposing one of the plurality of adjacent screening rollers, the sizing roller being operably configured to rotate to fragment at least some of the oversize ore portions that are transported along the roller screen and pass between the sizing roller and the opposing screening roller to produce a second sized ore portion, the second sized ore portion being sized for passage through the interstices.