Technical paper: Modern solid-bowl centrifuge technology outperforms filtration technology in tailings dewatering

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About the paper

The modern SBC technology is deployed to produce dewatered solids suitable for either dry stacking or for co-disposal with coarse rejects. It can also be adapted to produce a thickened pumpable discharge if the mining customer desires, owing to site-specific requirements. In this paper, we present a detailed lifecycle cost analysis for iron ore tailings dewatering using Alfa Laval’s SBC versus filter press technology. Inputs have been collected from one of the SBC installations that has completed more than 20,000 hours of successful operation at an iron ore mine and the details regarding the filter press have been collected from a similar customer site. This study shows more than 30% savings in capex and up to 21% savings in opex per annum resulting in up to 23% lower lifecycle cost for the modern SBC vis-à-vis the filter press considering a plant operating period of 20 years.

About the author

Amol Chinchankar – DCE, DBM, MMS Senior Business Development Manager, Mining Amol has has more than 25 years of application engineering and technical sales experience with specialization in centrifugation and other liquid/solid separation technologies. In December 2008 he joined Alfa Laval and is currently based in Sweden focusing on business development of solid-bowl centrifuge for dewatering of tailings. Prior to that Amol has worked in India with GL&V and KHD Humboldt Wedag (separation equipment) and with Dai-Ichi Karkaria (specialty chemicals).


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