Rare Earth Magnets and Limescale: Analysis of Magnetic Water Treatment Using a Dynamic Scale Rig,Industrial & Engineering Chemistry Research

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Rare Earth Magnets and Limescale: Analysis of Magnetic Water Treatment Using a Dynamic Scale Rig
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-06-23 , DOI: 10.1021/acs.iecr.2c01383
Jean Lombard ₁ , Leané D. van Zijl ₁ , Luca Bertossi ₁ , Shane Smith ₁ , Elaine Barnard ₁ , Sean J. O’Kennedy ₁ , Anthony Turton ₁

Affiliation

Treatment of limescale build-up in process- and municipal pipes by magnetic water treatment has been a topic of research for decades. However, there is no realistic mechanistic hypothesis as to why such treatments would be effective. Therefore, a test regime was established to explore scale inhibition by means of magnetic forces in a robust and reproducible manner. In this study, two magnetic devices were developed using Neodymium-based rare earth magnets for the application of static magnetic fields. One device, based on a Halbach array, is designed to test high-intensity (965 mT) magnetic fields. The other is based on a Halbach trap arrangement, designed to test high magnetic field gradients (490 mT, 82.5 T/m). The precipitation reactions of calcium carbonate, calcium sulfate, and calcium phosphate were monitored in real-time to determine the effectiveness of these devices for inhibiting scale. No magnetic treatment effects were observed.

中文翻译：

稀土磁铁和水垢：使用动态比例钻机分析磁水处理

几十年来，通过磁水处理来处理工艺管道和市政管道中的水垢一直是研究的主题。然而，对于为什么这样的治疗会有效，没有现实的机械假设。因此，建立了一个测试方案，以稳健且可重复的方式探索通过磁力抑制水垢。在这项研究中，使用钕基稀土磁体开发了两种磁性装置，用于应用静磁场。一种基于 Halbach 阵列的设备设计用于测试高强度 (965 mT) 磁场。另一个基于 Halbach 陷阱装置，旨在测试高磁场梯度（490 mT，82.5 T/m）。碳酸钙、硫酸钙的沉淀反应，实时监测磷酸钙和磷酸钙，以确定这些装置抑制水垢的有效性。没有观察到磁处理效果。

更新日期：2022-06-23

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