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An Example of Silo Design Using a Shear Cell

The following report is an example of the process of designing a silo, exclusively using the capabilities of the Anton Paar powder shear cell, applying the design principles spearheaded by Andrew Jenike. It will give an impression of the steps and measurements necessary to construct and maintain a mass flow silo. This process can also be done in reverse to make sure an existing silo is appropriate for different bulk solids.

Introduction

The design of a silo is widely considered one of the most challenging tasks in chemical engineering. Originally codified by Andrew Jenike (1), the method remains virtually unchanged to this day. Jenike also devised the accompanying measurement equipment, the translational shear cell, which, while accurate, is enormously difficult to use and very time consuming. Later innovations transposed the measurement principle into a ring form (2) which allows a continuous measurement procedure and an automation of the measurement process.

This work aims to illustrate how to apply these principles with modern equipment - the Anton Paar powder shear cell.

1. Jenike, Andrew W. "Storage and flow of solids, bulletin no. 123." Bulletin of the University of Utah 53.26 (1964).

2. Schulze, Dietmar. "Powders and bulk solids." Behaviour, Characterization, Storage and Flow. Springer (2008): 35-74. 

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