The study reported in this paper is the first in a series of two that investigated the influence of operating conditions on stratification in a batch jig. This paper focuses on an equilibrium study; the next on a kinetic study. Based on testwork and a detailed consideration of which operating conditions were relevant to the study, four factors were identified as being the primary operating variables influencing stratification in the test jig. These were the pulsion time, the pulsion hold-time; the amplitude of the jig cycle; and the depth of the particle bed in the jig. All other factors were found to be either dependent variables, or to exert no significant influence on stratification at equilibrium. Based on 32 equilibrium tests, it was found that the equilibrium stratification profile was essentially independent of operating conditions within a broad range of values. This finding has both theoretical and practical implications. The most significant of these is that the influence which operating variables have on jig performance appears to derive primarily from their influence on stratification kinetics and not from their influence on stratification at equilibrium.

本文报道的研究是研究操作条件对批量夹具分层影响的两个系列中的第一个。本文侧重于均衡研究；接下来进行动力学研究。基于测试工作和对哪些操作条件与研究相关的详细考虑，四个因素被确定为影响测试夹具分层的主要操作变量。这些是脉冲时间，脉冲保持时间；跳汰周期的幅度；以及夹具中颗粒床的深度。发现所有其他因素要么是因变量，要么对平衡时的分层没有显着影响。基于 32 个平衡测试，发现平衡分层曲线在很宽的数值范围内基本上与操作条件无关。这一发现具有理论和实践意义。其中最重要的是操作变量对夹具性能的影响似乎主要来自它们对分层动力学的影响，而不是它们对平衡分层的影响。