This work builds on two previous studies (Starrett and Galvin, 2023; 2025) using a REFLUX™ Classifier to separate a silica feed (0–710 µm) based on particle size. Here the focus was on the factors that control the separation size at low solids concentration and high volumetric feed fluxes. Feed suspensions at concentrations of ∼ 2 to 8 wt.% solids and volumetric feed fluxes up to 250 m3/(m2 h) were used. A hydrodynamic floor, referred to as “Split Fluidisation”, ensured virtually no by-pass of fine particles to the coarse underflow stream, whilst the system of inclined channels ensured virtually no coarse particles were entrained via the fine stream to the overflow. The partition curves continued to exhibit full closure, however, were sharper than the separations in the previous studies with Imperfections, I = Ep/D50, in the range of 0.06–0.07. Across the three studies, a linear relationship was obtained between the inferred suspension viscosity and the Imperfection, providing a new insight into understanding the factors that govern the Imperfection.

中文翻译：

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斜通道在矿物粒度流体动力学分类中的应用 - 第三部分 - 扩展到高体积进料通量和低浓度

这项工作建立在之前的两项研究（Starrett 和 Galvin，2023 年;2025 年）的基础上，使用 REFLUX™ 分类器根据颗粒大小分离二氧化硅进料 （0-710 μm）。这里的重点是在低固体浓度和高体积进料通量下控制分离尺寸的因素。使用浓度为 ∼ 2 至 8 wt.% 固体的进料悬浮液和高达 250 m3/（m2 h） 的体积进料通量。被称为“分流流化”的流体动力学地板确保几乎没有细颗粒绕过粗底流，而倾斜通道系统确保几乎没有粗颗粒通过细流夹带到溢流。分区曲线继续表现出完全闭合，但是，比之前研究中具有缺陷 I = Ep/D50 的分离更清晰，范围为 0.06-0.07。在这三项研究中，推断的悬浮液粘度与缺陷之间获得了线性关系，为理解控制缺陷的因素提供了新的见解。