Separation of fine mineral particles by selective magnetic coating
Separation of fine mineral particles by selective magnetic coating
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DOI：
10.1006/jcis.2001.7925
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发表时间：
2002-12
影响因子：
4.3
通讯作者：
G. Anastassakis
中科院分区：
文献类型：
--
作者：
G. Anastassakis
本文研究了用选择性磁性包覆法分选微细矿物颗粒的方法。使用的矿物是石英和菱镁矿，涂层磁性材料是研磨至极细粒度的重介质级磁铁矿。计算了十二胺表面活性剂存在和不存在时各矿物与磁铁矿之间的相互作用能。没有表面活性剂，没有磁性涂层上获得的单一矿物，尽管有利的预测。在表面活性剂的存在下，在单个石英颗粒上获得的磁性涂层结果与基于计算的能垒的预测行为完全一致，而对于菱镁矿，结果部分一致。当使用人造矿物混合物时，石英与菱镁矿的选择性分离得到充分证实。
This study deals with the separation of fine mineral particles using selective magnetic coating methods. The minerals used were quartz and magnesite, and the coating magnetic material was magnetite of heavy media grade ground to extremely fine particle size. The total interaction energies between each mineral and magnetite were calculated in the absence and the presence of dodecylamine as surfactant. Without surfactant, no magnetic coating was obtained on either of the single minerals, despite the favorable predictions. The magnetic coating results obtained on single quartz particles in the presence of surfactant were in full agreement with the predicted behavior based on the calculated energy barriers, while for magnesite the results were in partial agreement. The selective separation of quartz from magnesite was sufficiently confirmed when artificial mixtures of minerals were used.