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首页> 外文期刊>Minerals Engineering >Investigating the benefits of replacing hydrocyclones with high-frequency fine screens in closed grinding circuit by simulation
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Investigating the benefits of replacing hydrocyclones with high-frequency fine screens in closed grinding circuit by simulation

机译：通过仿真研究封闭式磨削电路中用高频细屏替含水旋流酮的益处

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摘要

Screens, which provide better separation efficiencies compared to hydrocyclones, have been attracted the attention of minerals industry for many years. However, low capacity in fine screening applications has limited the use of screens to classify the ball mill product in wet grinding circuits. In recent years, the separation efficiency of fine particles in a small footprint has been largely increased by the advances in high-frequency screening technology, thus increasing the use of screens to close fine wet grinding circuits. The potential of high-frequency fine screens to improve overall circuit performance was evaluated in this paper using lead-zinc ore grinding data. Data come from circuits at the lead-zinc mine in Turkey where both high-frequency screens and hydrocyclones are used to close grinding circuits. The ball mill-hydrocyclone circuit and the ball mill-screen circuit were sampled in order to measure and compare the performance of the circuits. The ball mills are different in design. Therefore, simulation studies were carried out to eliminate the differences in factors affecting the performance of the circuits such as milling conditions. Data indicated that using high-frequency screens in place of hydrocyclones in grinding circuit improves throughput by reducing the circulating load. Lower by-pass and sharper separation provided by high-frequency screens are the major factors affecting the capacity of the circuit and the results showed that 13% more throughput is achieved with 15% less grinding energy when hydrocyclones are replaced by high-frequency fine screens.
机译：与氢旋流器相比，提供更好的分离效率的屏幕，已经吸引了多年的矿业行业的注意。然而，精细筛选应用中的低容量限制了使用屏幕将球磨机在湿式磨削电路中进行分类。近年来，在高频率筛选技术的进步中，小足迹中细颗粒的分离效率已经大大增加，从而增加了屏幕关闭细湿磨电路的使用。使用铅锌矿磨削数据，在本文中评估了高频细屏的潜力，以改善整体电路性能。数据来自土耳其领先锌矿的电路，其中两个高频屏幕和氢旋流器都用于关闭研磨电路。采样球磨 - 水力旋流器电路和球磨机电路，以便测量和比较电路的性能。球磨机的设计不同。因此，进行了模拟研究以消除影响电路性能的因素的差异，例如研磨条件。数据表明，使用高频屏幕代替磨削电路中的氢旋流器通过减少循环负载来提高吞吐量。高频屏幕提供的较低旁路和更清晰的分离是影响电路容量的主要因素，结果表明，当氢旋流器被高频细屏替替换时，通过15％的研磨能量实现了13％的吞吐量。 。

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