FLSmidth said the new REFLUX Classifier technology is rapidly gaining popularity in coal and iron-ore processing applications thanks to its high separation efficiency and the ability to easily handle varying feed conditions compared to traditional gravity separation technology.

In the pilot trials at Rana Gruber, the Reflux Classifier demonstrated consistent and high separation efficiency in the 0-150µm size fraction from material currently discarded to tailings. While the iron grade of the feed to the classifier is around 10%, the concentrate produced had more than 60% iron, and a yield of more than 20% of the iron in the 0-150µm size fraction that is currently lost to waste.

Sales director EMENA, Andrew Dixon, explained: “The RC incorporates a ‘laminar high shear rate’ mechanism, which represents the latest in fine particle gravity-based separation technology. The lamella section enhances the REFLUX Classifier’s capacity, producing a more compact, higher efficient separation unit when compared to competing iron-ore and mineral processing equipment such as spirals, up-current classifiers and teeter bed separators.”