Low Consistency Pulp Cleaner

Quality Assurance
For guaranteeing product quality and on-time delivery, Beichen built new manufacturing factory in 2016 with floor area 13900㎡ in High-tech Zone. Key parts of the factory are two workshops and one warehouse together with a office building.

Advanced Production Equipment
With advanced production equipment, skilled technicians and scientific management, the overall production capacity realized times increase. For the ceramic cones production line, we own isostatic pressing machine, CNC grinders, electric kiln and gas kiln and skilled grinding technology. We realize the full process production all by own both for ceramic cones and stainless steel cones ceramic lining and grinding.

Strict Inspection
Before being shipped, each product must go through a comprehensive inspection. Every pulp cleaner, spare part, and ceramic dewatering component is rigorously evaluated to ensure that it meets the size, composition, and technical specifications outlined in the drawings.

Comprehensive Service
The services team form Beichen cover pre-planning, selling, technique assistance, package and deliver. We can help to provide better product solution and maintain for longer operation lifecycle of your processes and equipment. Further benefits can be provided by our service in energy saving, enhanced production efficiency.

The low consistency pulp cleaner is a device that uses the centrifugal principle to remove impurities with a different density in the slurry. The upper part of the low consistency pulp cleaner is made of stainless steel, and the lower part is injection molded of polyurethane material. The inner wall of the main body is a spiral cone design. The bottom of cone adapt wear-resistant ceramics. It ensures the stable deslagging and long service life. 

Low consistency pulp cleaners typically operate at a pulp consistency of about 0.5-1.5%, which means the pulp suspension is relatively diluted. These cleaners are primarily used to remove lightweight contaminants, such as plastics, sand, and fine dirt, from the pulp. Low consistency pulp cleaners rely on centrifugal forces to separate impurities based on density differences; lighter contaminants rise to the top while heavier particles are ejected downward. This type of cleaner is particularly effective for secondary fiber processing where smaller impurities need to be filtered out to improve pulp quality.

The high consistency pulp cleaners, on the other hand, is designed for efficient separation of abrasive, heavy-weight impurities such as sand, grit, glass, and metal. It ensures a cleaner furnish and can be installed as a complement to other pulp cleaning or screening equipment and to protect rotating equipment from wear. The high consistency pulp cleaners is suitable for all types of pulp. The high consistency pulp cleaners is typically located in the tail-end of a fine screening system, or in a cleaning system, where heavy-weight particles must be removed efficiently to improve quality and minimize wear on screen baskets and rotors.

Low consistency pulp cleaners gives a continuous reject outlet and high centrifugal forces, results in the highest removal effect. Although, it consumers high energy per ton of stock. To prevent plugging in screens and rotors and reduce fiber content, dilute water from the reject outlet.

Low consistency pulp cleaners are highly efficient in removing of wax and plastic particles, but density of contaminated particles must be less than water density. A cleaner system has four stages, and each stage is made up of several cleaners that are linked together to make cleaner batteries.

High centrifugal acceleration and flow conditions allow a cleaner with a rotating housing to remove light particles with a density close to that of water.

A Pressure Drop, the drop in pressure between the feed and accept headers, determines the cleaner flow capacity, and can impact removal efficiency. An increase in pressure drop can impact hydrocyclone efficiency because it:

• Decreases feed consistency
• Increases particle inlet velocity
• Increases centrifugal force
• Decreases residence time

Consequently, the pressure drop depends upon the type of cleaner used in an application. Generally, hydrocyclones operated at a high pressure drop have a better cleaning efficiency than those operated with a lower Pressure Drop; however, excessively high Pressure Drops will result in a drop off in efficiency, as the effect of decreased residence time becomes greater than the effect of the increase in centrifugal force.

The pressure differential (dp), the difference in pressure between the accept and reject headers, determines the volumetric reject rate, which can impact removal efficiency and runnability. Excessively low volumetric rejects can lead to plugging and insufficient contaminant removal, while excessively high volumetric rejects can lead to turbulence and overwhelm the lower stages with fiber.

Conduct regular inspections of the pulp cleaner to check for any clogs or buildup of debris in the internal parts. Cleaning these components helps ensure smooth operation and prevents blockages that could hinder performance. Inspect critical components such as the cone, inlet nozzle, and vortex finder regularly for signs of wear and tear. Worn-out parts can compromise the cleaner’s efficiency and lead to unscheduled downtime.

Ensure that all moving parts are well-lubricated according to the manufacturer’s maintenance guidelines. Adequate lubrication helps reduce friction, wear, and the risk of part failure, thereby extending the lifespan of the cleaner. Low consistency pulp cleaners are designed for specific ranges of fiber consistency, typically between 0.5% and 1.5%. Operating outside this range can cause inefficiencies or damage to the cleaner.