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螺旋分级机、水力旋流器均按沉降规律进行物料分级,分级效率低。为了提高分级效率,东北工学院于1982年研制了GPS-400×960实验室小型高频振动细筛,在实验室中进行了连续模拟试验,建立了影响筛分效率和产量诸参数的数学模型,取得了良好的工艺试验指标(详见《金属矿山》1983年第五期31～36页)。在这个基础上,又研制了GPS-800×1680中型高频
Spiral classifier, hydrocyclone according to the law of sedimentation sub-material grading, classification, low efficiency. In order to improve the classification efficiency, Northeastern Institute of Technology in 1982 developed a GPS-400 × 960 laboratory small high-frequency vibrating fine sieve in the laboratory conducted a continuous simulation test to establish a mathematical model of the parameters that affect the screening efficiency and yield , Has achieved good technical test indicators (see “Metal Mines,” 1983 fifth period 31 ~ 36). On this basis, but also developed a GPS-800 × 1680 medium-sized high-frequency