Disc Thickener Technology: How to Increase Pulp Consistency from 0.8% to 10% Efficiently | Leizhan

Disc Thickeners Bridge the Consistency Gap Between Screening and Storage

Disc thickeners increase pulp consistency from 0.6-1.2% (post-screening) to 8-12% for storage or bleaching. The rotating disc assembly partially submerged in the stock vat uses vacuum-assisted filtration through wire mesh panels. A 100 TPD unit with 10 discs achieves 3.5-5 tons of water removal per hour with specific energy consumption of 2-4 kWh/t.

FAQ

How do disc thickeners compare to screw presses?

Disc thickeners consume less energy (2-4 vs 8-12 kWh/t) but achieve lower discharge consistency (8-12% vs 25-35%). For applications requiring only storage consistency, disc thickeners are more cost-effective.

How often should disc thickener filter bags be replaced?

Every 4-6 months under normal operation. Bag blinding (reduced water removal at same vacuum) signals replacement time. Polyester bags last longer than polypropylene in chemical pulp applications.