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原料的综合加工和无废料生产的发展趋势要求矿物资源的各种选矿方法联合应用。磁选是无生态危害的一种选矿方法，是矿物原料粗选、精选和分级工艺过程中的一个工序。用液态氮冷却的超导磁系的磁选机是选矿实践中的一种新设备。当今，出现了利用超导效应的高梯度磁选机和开梯度磁选机。前者适用于选矿工艺回路的前端作业，因为它对处理位度为100μm或更大粒度的物料最为有效．此时，其主要任务是产出有用组分含量最少的合格尾矿。此方法可明显减少后续破碎和磨矿作业的费用，因为只是孩选精矿被送入后续处理．容积梯度磁选机在选矿过程的最终段用于处理最终产品比较有效。本文对弱磁性颗粒在开梯度超导磁选机和高梯度超导磁选机工作室内的运动情况进行了理论和试验研究。在平板型开梯度磁选机中，装备具有NbTi“跑道”形线因并由液态氮冷却的磁系．工作室被平行于磁系平面的隔板分割成几个区。研究发现，根据工作区数目和其深度不同，开梯度磁选的回收率函数有所变化以及由开梯度应选向高梯度磁选的转变是如何出现的．考察了2mm及小于该粒度的颗粒。对多成分弱磁性矿石，测定了其颗粒的回收率参数分布。试验表明，KD2是在开梯度磁选机中，颗粒在（ρ-ρ0）D2／18／η／g＜＜V条件下的回收率参数，。是颗?
The comprehensive processing of raw materials and the development trend of non-waste production require the joint application of various mineral processing methods. Magnetic separation is a non-ecological harm of a beneficiation method, mineral raw materials rougher, selection and grading process in a process. Superconducting magnetism magnetic separator cooled with liquid nitrogen is a new type of equipment used in mineral processing. Today, high gradient magnetic separators and gradient magnetic separators that utilize superconductivity appear. The former is suitable for the front-end operation of a beneficiation process loop because it is most effective for handling materials with a grain size of 100 μm or more. At this point, its main task is to produce acceptable tailings with the least amount of components. This method can significantly reduce the cost of subsequent crushing and grinding operations, because only the concentrates are sent to follow-up treatment. Volumetric Gradient Magnetic Separators are more effective at the final stage of the beneficiation process for the final product. In this paper, theoretical and experimental studies on the movement of weak magnetic particles in the working chamber of a gradient superconducting magnetic separator and a high gradient superconducting magnetic separator are carried out. In a slab-type open gradient magnetic separator, a magnetic system having a NbTi “runway” shape and cooled by liquid nitrogen is equipped. The studio is divided into several zones by a partition parallel to the plane of the magnetic system. The study found that depending on the number of workspaces and their depths, the recovery function of open gradient magnetic separation changes and how the transition from open gradient to high gradient magnetic separation should occur. Particles of 2 mm and smaller are examined. For the multi-component weak magnetic ore, the particle size distribution of the recovery parameter was measured. Experiments show that KD2 is the recovery parameter of particles in a gradient magnetic separator at (ρ-ρ0) D2 / 18 / η / g << V. Is it?