Mike Bradley

Segregation in Powders and Bulk Solids:
An Industrial Overview of Causes, Effects, Consequences, Solutions and the Current State of Art in Material Characterisation and Problem Prediction

Synopsis
The Wolfson Centre team have spent the last 45 years solving and preventing bulk solids handling problems in industrial processing systems, yet segregation still remains one of the most common difficulties brought to us. Many companies suffer large losses in product quality, customer confidence and profitability due to the problem.
This presentation takes an industrial perspective on the practical experience and state of the art in:
• The causes and effects of segregation in industrial processes
• The kinds of processes and materials that are most at risk
• Current means to identify formulations, products and processes that are at risk
• Means for predicting and mitigating segregation at formulation and process planning stages
• Experience with the usefulness of different modelling techniques
• The many different solutions that can be applied to prevent or eliminate the problem
• Where research is needed to augment our available solutions
One of the main questions we will seek to explore is this; when this phenomenon has been so commonplace in manufacturing over so many decades, and so many different solutions are available and proven to be effective, why is it that so many equipment and product designers and process users are still being caught out by the problem? And what should we be doing in the community of particle technology, to prevent these avoidable losses in the wider world?

Bio Sketch:

Mike Bradley is Professor in Particle and Bulk Technology, Director of the Wolfson Centre for Bulk Solids Handling Technology and Head of the Greenwich Manufacturing Group at the University of Greenwich. He was awarded both his honours degree and PHD from Thames Polytechnic (now the University of Greenwich) and, as manager/director, provides technical leadership in all aspects of bulk solids handling. His particular areas of interest lie in pneumatic conveying, design of hoppers and silos, dust control, plant integration and maintenance of product quality. He is Chair of Solids Handling and Processing Association (SHAPA), and a member of Materials Handling Engineers Association (MHEA) and of the Institution of Mechanical Engineers Bulk Materials Handling Committee (IMechE). He was awarded a professorship in 2006 and the directorship in 2008.