Pumps for abrasive pigment dosing

The move has solved the problem of stator and rotor wear on the PC pump that was leading to a drop in performance; downtime; and the need for regular maintenance.

The APEX10 hose pump selected for the application features design attributes such as heat dissipation, precision machined hose elements and optimised hose compression. APEX pumps reduce hose element fatigue compared to other hose pumps. When replacement is required, the task can be swiftly carried out in situ by maintenance staff. The benefit for APEX users such BillerudKorsnäs is reduced maintenance intervals, leading to decreased cost of ownership. Operating and inventory costs are also less, as a singlehose element is all that needs to be replaced.

BillerudKorsnäsinstalled two APEX10 models, one duty and one standby. The pumps are fixed to a mobile skid and piped with valves to speed changeover. Offering a 14 rpm, 0.18kW motor suitable for VSD control, the flow rate is 25-30 litre/hr when using a green pigment, and 10-15 litre/hr for a blue pigment. The pumps are flooded suction (600mm head into pump via 2.5 metres of 1/2" flexi hose). Discharge is via 18 metres of 1/2" flexi hose inclusive of an 8.5 metre lift into the paper stock tank.