Abstract
The influence of dust loading and gas inlet/outlet dimensions on the performance of four industrial scale (0. 45 m diameter) cyclones has been investigated. All experiments were performed under ambient conditions at an inlet velocity of 15 m/s over a loading range of 0. 5 - 130g solid/m**3 air. Measurements of the pressure drop, gravimetric efficiency and grade-efficiency were made. Strong variations in both pressure drop and separation performance with geometry and solid loading were found. These variations are well described by existing predictive relations. The results are analysed to further elucidate the nature of the observed trends.