Hi-Rate Thickeners

The World's Highest Torque and Highest-Rate Thickeners from Dorr-Oliver and EIMCO!

In developing the Hi-Rate Thickeners, FLSmidth Minerals has drawn on decades of experience in flocculation and sedimentation technology from EIMCO and Dorr-Oliver. Extensive field tests were conducted to determine method of introducing feed and flocculants to achieve design rated performance and thickening while keeping polymer consumption to minimum.

Feed systems are used on High-Rate Thickeners to achieve roughly 12 times the throughput of conventional machines of similar size while substantially reducing water consumption and saving on flocculant costs. In operation, slurry is pulled into the open-top mix channel and water from the clear zone of the thickener is educted into the mix channel for efficient feed dilution.

Special proprietary feedwells namely EIMCO® E-Duc® Feed Dilution System (patented), DynaFloc® Feedwells, Dynacharge Feed Dilution Systems, and Dorr-Oliver Eimco's new Variable Dilution Feed Systems have been developed for Hi-Rate Thickeners to meet customer’s specific application requirements. Hi-Rate Thickeners can be used in applications where space for a conventional thickening circuit is limited.