The sequence includes rhyolites, agglomerates and tuff. Conventional agitators can present a number of problems including agglomerates and longer processing times. The ash is removed dry or as heavy agglomerates that defluidize. In grate boilers, incombustible ash agglomerates as cinders through prolonged residential time. The volcano consists of agglomerates, flows and tuff. There are various differences between agglomerates and ordinary ash beds or tuffs. This rock unit contains andesitic breccias, flow, agglomerates and tuffs. Basaltic types of rocks (lavas, tuffs and agglomerates) predominate here. The 'Uriconian Volcanics' include rhyolites, tuffs and agglomerates. The gas-humidification process agglomerates fine particles, increasing the bulk, making collection easier. A final drying step is required to stabilize the agglomerates. The large agglomerates formed in the venturi are then removed by an inertial separator. As the agglomerates grow larger, they settle into a collector. Traditional pyrolysis often results in aggregates and agglomerates rather than single primary particles. Crystalline masses of a different kind occur in some numbers in certain agglomerates.