Abstract Particulate suspensions systems are present in various industrial sectors, vibrating screens being some of the most versatile pieces of equipment for the separation of these two phases. This paper presents a study of the dynamics of the mixture on the screen during solid–liquid separation using vibration screening. The independent variables studied were g-force, volumetric concentration of solids in the feed, feed flow rate and inclination of the screen. The equipment used was a vibrating screen of 175 mesh with 95 μm aperture size. The evaluated response variables were the residual moisture content of the retained solids, the screen area occupied by the liquid, the transport velocity of the retained solids and the screen area occupied by the retained solids. The solid material used was sand with a density of 2.67 g/cm3 and a Sauter mean diameter of 373 μm, and the liquid phase was composed of water containing 0.1% xanthan gum. A central composite design was applied to the experiments and the results for each response were analyzed statistically. It was possible to verify that the increase in the g-force and screen inclination variables increased the operational capacity, since the areas occupied by the liquid and the retained solids were reduced. It was also found that higher volumetric concentrations of solids in the feed favored a reduction in the moisture content of the retained solids and their transport on the screen, since larger particulate material conglomerates were formed, which had a more uniform displacement path.

中文翻译：

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振动筛选：使用图像分析技术来表征固液分离中的床行为的详细研究

摘要 颗粒悬浮系统存在于各个工业领域，振动筛是用于分离这两相的最通用的设备之一。本文介绍了使用振动筛分进行固液分离过程中筛网上混合物的动力学研究。研究的自变量是重力、进料中固体的体积浓度、进料流速和筛网的倾斜度。所使用的设备是 175 目、孔径为 95 μm 的振动筛。评估的响应变量是滞留固体的残留水分含量、液体所占的筛网面积、滞留固体的输送速度和滞留固体所占的筛网面积。使用的固体材料是密度为 2 的沙子。67 g/cm3 和 373 μm 的 Sauter 平均直径，液相由含有 0.1% 黄原胶的水组成。将中心复合设计应用于实验，并对每个响应的结果进行统计分析。可以验证 g 力和筛网倾角变量的增加提高了操作能力，因为液体和保留的固体占据的面积减少了。还发现进料中较高的固体体积浓度有利于降低保留固体的水分含量及其在筛网上的传输，因为形成了较大的颗粒材料团块，其具有更均匀的位移路径。将中心复合设计应用于实验，并对每个响应的结果进行统计分析。可以验证 g 力和筛网倾角变量的增加提高了操作能力，因为液体和保留的固体占据的面积减少了。还发现进料中较高的固体体积浓度有利于降低保留固体的水分含量及其在筛网上的传输，因为形成了较大的颗粒材料团块，其具有更均匀的位移路径。将中心复合设计应用于实验，并对每个响应的结果进行统计分析。可以验证 g 力和筛网倾角变量的增加提高了操作能力，因为液体和保留固体所占的面积减少了。还发现进料中较高的固体体积浓度有利于降低保留固体的水分含量及其在筛网上的传输，因为形成了较大的颗粒材料团块，其具有更均匀的位移路径。因为液体和保留的固体所占的面积减少了。还发现进料中较高的固体体积浓度有利于降低保留固体的水分含量及其在筛网上的传输，因为形成了较大的颗粒材料团块，其具有更均匀的位移路径。因为液体和保留的固体所占的面积减少了。还发现进料中较高的固体体积浓度有利于降低保留固体的水分含量及其在筛网上的传输，因为形成了较大的颗粒材料团块，其具有更均匀的位移路径。