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MEI Online: Froth Flotation: Latest News: February 16th 2015


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:: FLSmidth Launches the Latest in Flotation Innovation During SME 2015


FLSmidth, a pioneer in flotation cell technology and leader in mineral processing and material handling solutions, launched its new nextSTEPTM rotor/stator technology during the annual Society for Mining, Metallurgy & Exploration (SME) conference in Denver, USA.

Used in forced-air flotation equipment, the unique, innovative and patent-pending design of the nextSTEPTM rotor/stator provides a “step change” in flotation metallurgical performance and energy efficiency.


“After years of flotation research and development, where we tested over 200 rotor/stator combinations, we developed the optimum solution that delivers significant improvements in performance of forced-air mechanisms. The nextSTEPTM rotor/stator has the lowest operating power of any forced-air flotation mechanism on the market. Additionally, this new technology demonstrates dramatic improvements in attachment rates, stronger air dispersion, and improved pumping efficiency, which leads to increased recovery," commented Frank Traczyk, FLSmidth Global Flotation Technology Director.

FLSmidth nextSTEP™ rotor used in 600-series Supercell tank in Nevada


Installing the FLSmidth nextSTEP™ rotor/stator for testing in the 660m3 Supercell™ machine

“It’s very exciting to see that the actual operating performance exceeds the aggressive goals we set for this development project over four years ago," Mr. Traczyk said. “We designed the rotor/stator to not only outperform the competition when it comes to recovery, but to also do it more efficiently, using less power; and that’s exactly what we accomplished with the nextSTEPTM mechanism. This will be very attractive for mineral processing plant customers who rely on forced-air flotation systems."



FLSmidth has been field-testing the new nextSTEPTM rotor/stator at several installations including the previously announced FLSmidth 600-series SupercellTM flotation site in Nevada, currently the largest operating flotation cell in the world.

The new patent-pending design of FLSmidth’s nextSTEP™ rotor and stator


Cutaway of nextSTEP™ rotor and stator combination

The company plans to offer the new flotation solution globally, as every forced-air project will benefit from this advanced technology. Not only for new installations, the nextSTEPTM rotor/stator is designed to be interchangeable with existing FLSmidth forced-air flotation mechanisms. The technology can also be retrofitted into any existing forced-air flotation cell, allowing all operations to benefit from the improved performance and reduced power.



Over the years, FLSmidth has delivered over 56,000 flotation machines, varying in size from 1 m3 up to 660 m3, and including both WEMCO® self-aspirated mechanisms and Dorr-Oliver® forced-air mechanisms. The company also offers comprehensive metallurgical testing, process design and field support.




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