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用湿式强磁选(WHIMS)对一些顺磁性硫化矿物,例如黄铜矿和铁闪锌矿,进行了开拓性研究,将这些矿物与磁性很弱或非磁性的硫化物分离,用来弥补优先浮选法的不足。用Erlez L-4-20型湿式强磁选机进行的试验室验试研究表明,智利铜精矿品位可由23.8％Cu提高到30.2％Cu,回收率为87.0％。该研究将黄铜矿与黄铁矿分离,是在20000高斯磁场中进行的。加拿大和墨西哥矿的Cu-pb分离试验发现,湿式强磁选可以将黄铜矿和方铅矿有效分离,因此,这方法对优先浮选作业提供了较大的适应性,低至8000高斯磁场可以达到良好分离的目的。该方法用于辉钼矿精矿脱铜时,能将钼精矿中的铜含量从0.8％降至0.5％,钼回收率高于97％。将来的研究工作将包括上述应用的半工业和工业试验以及其它矿物系统的试验。
A pioneering study of some paramagnetic sulphide minerals, such as chalcopyrite and marcelite, has been conducted using wet strong magnetic separation (WHIMS), separating these minerals from sulphides that are weakly or non-magnetic and used to compensate for preferential Lack of flotation method. Laboratory tests conducted with the Erlez Model L-4-20 Wet Magnetic Separator showed that the grade of copper concentrates in Chile increased from 23.8% Cu to 30.2% Cu with a recovery of 87.0%. The study separates the chalcopyrite from the pyrite and is carried out in a 20,000 Gaussian magnetic field. The Cu-Pb separation test in Canada and Mexico found that wet magnetic separation can effectively separate chalcopyrite from galena. Therefore, this method provides greater adaptability to preferential flotation work, with a Gaussian magnetic field as low as 8000 Can achieve the purpose of good separation. The method can be used for the copper removal of molybdenite concentrate from 0.8% to 0.5% and molybdenum recovery rate higher than 97% when the copper is removed from the molybdenum concentrate. Future research efforts will include semi-industrial and industrial tests of the above applications as well as testing of other mineral systems.