890 escalating the geotechnical risks associated with large-scale storage [6]. Historically, flotation circuits have been integrated with grinding circuits using a "recovery-first" philosophy. Optimization has focused almost exclusively on achieving the target P80 for mineral liberation, with little regard for the physical properties of the resulting tailings [7]. While this approach maximizes short-term metal output, it creates a systemic "integration deficit" when the operation transitions to dry stack tailings. Traditional circuits frequently overlook the disproportionate impact of ultra-fines on the filtration stage. In a dewatering context, the particle size fraction below 20 µm and particularly the sub -10 µm "slimes" fraction acts as the primary catalyst for operational failure. Based on the Kozeny-Carman relationship, cake resistance is inversely proportional to the square of the particle diameter (R∝1/d2). Consequently, an increase in the fines fraction does not merely result in a linear extension of cycle times; rather, it triggers an exponential increase in filtration resistance [8]. Mining operators are increasingly recognizing the impact of ultra-fines on the dewatering stage [9]. Consequently, operators are finding that even a marginal increase in the fines fraction does not merely result in a linear extension of cycle times; rather, it triggers an exponential surge in filtration resistance [10]. This shift in understanding is forcing a move away from traditional "recovery-only" grinding targets toward a more integrated approach that accounts for the physical limits of the filter plant [11]. To manage increasingly challenging tailings profiles, the industry has traditionally relied on "downstream-only" capital investments, deploying massive filtration plants characterized by high CAPEX and OPEX [12]. However, regardless of the scale of investment, standalone filtration technology remains a "symptom-treater" rather than a holistic process solution [13]. As the terminal stage in the circuit, these units are entirely vulnerable to upstream variability, such as clay pockets or unplanned shifts in Particle Size Distribution (PSD) [14]. This lack of upstream integration creates a systemic vulnerability where a mine’s entire throughput is throttled by a reactive, "brute-force" approach attempting to solve through increased filtration capacity a problem that fundamentally originates in the grinding and flotation stages [15][16]. Across the mining sector, a strategic shift is underway to bridge the historic divide between mine planning and metallurgical processing. This movement, characterized as "Integrated Mine-to-Tailings" optimization, seeks to align upstream activities, such as blasting and primary grinding, directly with downstream dewatering requirements [17]. Rather than treating each unit operation as an isolated silo, operators are increasingly viewing the flow sheet as a single, continuous system. In this model, upstream decisions regarding mineral liberation and coarse rejection are made with the explicit objective of enhancing the physical amenability of the final waste stream to filtration [20]. There is a burgeoning industry consensus that dismantling these traditional operational silos is essential for achieving long-term sustainability. This shift toward upstream-downstream integration focuses on "pre-conditioning" material at the earliest possible stage to ensure downstream success [19]. While methodologies such as Sensor-Based Ore Sorting and Advanced Geometallurgical Mapping provide the initial layer of integration by rejecting barren waste and providing predictive data on clay-rich mineralogy [20], the critical technical bridge remains Coarse Particle Flotation (CPF). To evaluate this integrated approach, this study investigates how the NovaCell™, utilize as a Coarse Waste Rejection (CWR) unit, facilitates the production of coarser tailings, a strategic shift that prevents the inadvertent generation of the ultra-fines that typically choke dewatering circuits [21]. a fundamental prerequisite for optimizing the performance of downstream dewatering systems [22]. To address existing knowledge gaps, the research quantifies the enhancement of filtration rates attributable to the integration of this CWR stage. Notably, the scope of this investigation is confined to a comparative analysis of dewatering kinetics between conventional processing routes and an integrated CWR configuration, rather than an evaluation of the unit's metallurgical flotation recovery.
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