FLSmidth REFLUX Classifier RC3000

The FLSmidth REFLUX Classifier RC3000 is a high-efficiency wet gravity classification and sorting device based on the patented Lamella settler principle enhanced by a fluidised-bed separation zone. The RC3000, with a 3000mm vessel diameter, represents the largest commercial unit in the REFLUX Classifier series, capable of processing up to 300 t/h of fine mineral feed at separation densities between SG 1.4 and SG 2.7, making it applicable to a wide range of mineral processing separation challenges. The REFLUX Classifier's combined lamella settling and fluidised-bed mechanism produces a significantly sharper separation than a conventional single-stage spiral or hindered-bed classifier operating at equivalent throughput, particularly in the challenging 45–500 micron particle size range.

The RC3000's operating principle integrates two separation mechanisms in a single vessel: a lamella settler array in the upper section provides enhanced settling efficiency (equivalent to a much larger conventional thickener), while a fluidised rising current of teeter water in the lower section creates a hindered-settling environment where particle separation is governed by particle density rather than size alone. This dual-mechanism approach is particularly powerful for separating minerals of similar particle size but different density — such as separating liberated phosphate grains from silica gangue at Maaden Phosphate Company's Wa'ad Al-Shamal beneficiation plant, or separating heavy iron-bearing minerals from lighter silica at iron ore processing facilities.

The REFLUX Classifier is the product of FLSmidth's collaboration with the University of Newcastle (Australia) and is backed by an extensive peer-reviewed research base, making it one of the few novel mineral processing devices whose separation mechanisms are fully characterised and modellable from first principles. This scientific foundation is particularly important for Saudi mineral processing project engineers working on greenfield projects under Vision 2030's strategic minerals programme, where operating experience with the specific ore is limited and predictive modelling must provide confidence in process design. FLSmidth's global testwork database and the RC3000's well-characterised behaviour allow reliable performance predictions from small-scale continuous pilot tests.

Razz Middle East provides REFLUX Classifier RC3000 supply and support in Saudi Arabia, including pilot test coordination through FLSmidth's international testwork facilities, full-scale unit supply and installation, and commissioning and optimisation services. Our team can assist Saudi mineral processing engineers in assessing the REFLUX Classifier for both greenfield applications and as a retrofit replacement for underperforming spiral or hydrocyclone classification circuits.