Results of studying the process of fine milling of α-Al₂O₃ in the presence of polyethylene glycol (PEG) and an antistatic composition are presented. It is shown that the main reason for agglomeration of fine particles is the effect of appearance of an electrostatic surface charge. Introduction of PEG prevents appearance of a “pseudo-viscous milling medium”, removing the excess electrostatic charge at the surface of newly formed ultrafine particles, and also intensifies the wear process of primary alpha-alumina crystals. The antistatic composition successfully neutralizes a surface electrical charge, but does not exhibit a milling intensifier effect.

中文翻译：

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活性氧化铝制备领域的研究。第五部分 高铝原料精磨过程中的不同工艺途径

介绍了在聚乙二醇 (PEG) 和抗静电组合物存在下精细研磨 α-Al ₂ O ₃过程的研究结果。结果表明，细颗粒团聚的主要原因是表面静电电荷出现的影响。PEG的引入防止了“伪粘性研磨介质”的出现，去除了新形成的超细颗粒表面多余的静电荷，同时也加剧了初级α-氧化铝晶体的磨损过程。该抗静电组合物成功地中和了表面电荷，但不表现出研磨增强剂效果。