Features and Benefits

The British Rema Double Cone Classifier is an airborne unit suitable for coarse classification with particular application to closed-circuit ball milling systems.

• Operating range generally 50 microns to 300 microns

• Feed rates up to approx. 70 tons/hour

• Airborne feed and fines discharge with gravity discharge of oversize.

• No rotating element or screens.

• Simple external adjustment of product fineness by variation of vane angle.

• Simple and robust construction.

• Optional abrasion resistant linings available in steel, rubber, polyurethane, or ceramics.

Operating Principles

• Feed material entrained in carrier air enters by duct (1).

• Change of direction imparted by baffle plate (2) provides primary classification of larger particles which fall under gravity to rejects chute (3).

• Remaining feed stock and carrier air continues up the annulus between inner and outer cones to the vaned section (4).

• Passage through the vaned section imparts vortex action to carrier air and material.

• Final classification takes place within the vortex removing further oversize which falls to the bottom of the inner cone to be discharge through balanced flap valves (5).

• Final product is carried up the discharge pipe (6) in the entraining air for subsequent external collection.