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研制了一台供开梯度磁分离用的超导四极磁体。磁体由二个同轴反绕螺线管组成,螺线管可产生一个高磁场和一个能扩散相当大范围的梯度。低温恒温器外工作空间的最大场强为1.9T,最大梯度为39特斯拉/米。由于受磁力的作用,颗粒流按其本身的磁化率被分离成各种组份。报导了以空气为介质的干式和以水为介质的湿式磁分离试验。这些试验表明,开梯度磁分离有可能在选矿上和在含有铁磁性颗粒的工业废水的处理上得到应用。因为需要强磁力,故有必要应用超导磁体来产生强磁场。
A superconducting quadrupole magnet for magnetic separation with gradient was developed. The magnet consists of two coaxial rewind solenoids that generate a high magnetic field and a gradient that can diffuse over a wide range. The maximum field strength of the working space outside the cryostat is 1.9 T and the maximum gradient is 39 Tesla / meter. Due to the magnetic force, the particle flow is separated into various components according to its own susceptibility. Reported air-based dry and water-based wet magnetic separation tests. These tests show that open gradient magnetic separation is likely to find application in beneficiation and in the treatment of industrial wastewater containing ferromagnetic particles. Because of the strong magnetic force, it is necessary to use superconducting magnets to generate strong magnetic field.