Centrifugal decanters for paper recycling
In paper recycling, the quality of recovered fibers depends largely on the efficiency with which impurities present in paper suspensions are removed. Inks, mineral fillers, glues, microplastics, and residues of various origins make these mixtures particularly difficult to treat with conventional technologies. CBB Decanters offer a robust and reliable industrial solution for improving process water management, maximizing fiber recovery, and reducing operating costs related to paper sludge disposal.
Industrial process
The paper suspension is fed into the high-speed cylindrical-conical drum, where centrifugal force rapidly separates the solids, fibers, fillers, contaminants, and liquid phase. The internal screw, controlled by a differential speed, progressively removes the solids toward the outlet, while the clarified product is continuously extracted from the other end of the drum. The ability to adjust the separation parameters based on the type of paper sludge treated optimizes the quality of the clarified product and reduces the load on subsequent treatment systems, improving the overall efficiency of the recycling cycle.
CBB Decanter Technology
CBB Decanters for paper recycling are designed to handle highly variable suspensions, where the simultaneous presence of short fibers, abrasive mineral fillers, and various types of residues requires a specific construction approach. The bowl geometry ensures uniform sedimentation even with low-consistency materials, while the screw profile is optimized to handle solids in a controlled manner without operational downtime. Integrated control systems analyze flow rate, torque, and differential speed in real time, continuously adapting the machine’s behavior to variations in the paper suspension and ensuring stable separation and a constant reduction of impurities in the clarified product. Abrasion-resistant materials and design solutions targeted at the most stressed areas guarantee a long operating life even in the most intensive systems.
Advantages of centrifugal separation
- High separation efficiency even with complex paper suspensions.
- Improved clarified water quality and reduced impurities.
- More effective fiber recovery and waste reduction.
- Continuous 24/7 operation with minimal supervision.
- Reduction of disposal costs and greater process stability.
Frequently Asked Questions
They separate fibers, sludge, and process water, improving material recovery and reducing the volumes to be disposed of in paper mills.
They optimize the water cycle, reduce management costs and increase the overall efficiency of wastewater treatment.
Yes, thanks to the torque management and the drum geometry which favors the separation of materials rich in fibers.
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