Overview
A PFI refiner (also known as a buckling machine or vertical Refining machine) is a device used in pulp and paper experiments to provide standard samples for pulp buckling determination, pulp sample moisture determination, pulp concentration determination, and wet dissociation determination. The equipment meets the experimental standards specified in ISO 5264/2-1979 "Pulp Laboratory Refining - Part 1: PFI Grinding Method".
Features
1. The inner diameter of the slurry pool is φ 250mm, the depth is 53mm, and the Rotation speed is 600r/m; 2. The outer diameter of the flying knife rotor is φ 200mm, the height is 50mm, and the thickness of the knife is 5mm; 3. The flying knife rotor motor Power is 1.1kW/380v, the Rotation speed is 1400r/m; 4. The adjustment distance of the buckle gap is 0~ 25mm; 5. The slurry pool motor Power is 370W/380v, the Rotation speed is 1400n/m; 6. The counter shows the control range of 0-999999 rpm; 7. The speed difference between the knife roller and the slurry pool is (6.0 +/- 0.2) m/s; 8. Pulp concentration is deducted 5~ 20%, and the dry pulp is absolutely 5~ 30g; 9. Refining pressure adjustable, including (3.33 +/- 0.1) N/mm, (1.77 +/- 0.1) N/mm, (4.89 +/- 0.1) N/mm blade length; 10. Dimension 860 * 450 * 1100mm, Net weight 251Kg.
Principle
The PFI refiner swirls/spins in the slurry pool through the flying knife rotor, forming a linear velocity difference with the slurry pool, and debasing the Pulp. Adjust the debasing gap and Refining pressure to realize the standardization of Pulp Refining, and provide a uniform sample for subsequent measurement.
Applications
Pulp and paper experiment
Standards
ISO 5264/2-1979
Steps
1. Adjust the buckling gap to the required distance; 2. Set the counter revolution; 3. Add the Pulp sample and control the concentration at 5~ 20% or 5~ 30g of absolute dry pulp; 4. Start the device for Refining; 5. Remove the standard sample after completing Refining.
Notice
• Ensure that the power supply is 380v; • Refining pressure needs to be precisely controlled within the specified range; • Pulp concentration and dry slurry amount need to meet the requirements; • Check the equipment gap and counter settings before operation; • Pay attention to safety and avoid contact with moving parts during operation.
