The analysis of the main regularities of distribution of the material in stages of the vertical cascade makes it possible to substantiate the optimality of some important parameters of separation. It is shown that the best efficiency of separation can be attained as a result of feeding of the source material into the central part of the cascade. In this case, the number of stages should be restricted because the efficiency of separation decreases as the number of stages increases. The proposed analysis also reveals some shortcomings of the generally accepted velocity-based hypothesis in the theory of gravitational processes, which occupies a central place in the analyzed theory until now.

对垂直级联阶段中材料分布的主要规律进行分析，有可能证实某些重要分离参数的最优性。结果表明，将原料进料到级联的中心部分可以达到最佳分离效果。在这种情况下，应该限制级数，因为分离效率随着级数的增加而降低。提出的分析还揭示了引力过程理论中普遍接受的基于速度的假设的一些缺点，该假说在分析的理论中一直占据着中心位置。