Gas flow classification Zigzag sifter to separate solid compounds Features - gas flow classification with a zigzag sifter - transparent duct to observe the separation process - practical experiments on a laboratory scale Learning objectives/experiments - learning the fundamental principle of wind sifting (gas flow classification) - sorting -- coarse material fraction -- fine material fraction - dependent on solid mass flow rate and volumetric air flow rate - classifying (with CE 264) -- fraction balance -- separation function -- separation size -- sharpness of separation - dependent on solid mass flow rate and volumetric air flow rate - pressure losses of -- sifter -- cyclone dependent on solid mass flow rate and volumetric air flow rate Specification [1] zigzag sifter to separate solid compounds [2] feed hopper with vibrating trough for feed of solid compound into sifter [3] dosage of feed material by way of distance of hopper outlet from vibrating trough and frequency of vibrating trough [4] separation of solid compound into coarse and fine material with air flow in 20-stage zigzag duct [5] air flow generation by fan; adjustment by valve [6] separation of fine material from air flow by gas cyclone with tangential inlet [7] 3 tanks for feed material and coarse and fine materials [8] recording of volumetric air flow rate and differential pressure through sifter and cyclone Technical data Vibrating trough - mass flow: max. 10kg/h - vibration frequency: max. 3000min-1 Zigzag sifter - height: approx. 1400mm - cross-sectional area: 34,5x50mm Cyclone - height: approx. 550mm - diameter: 150mm Fan - volumetric flow rate: max. 600m3/h - power consumption: approx. 3600W Tanks - feed hopper: 3L - coarse material: 2L - fine material: 2L Measuring ranges - differential pressure: 2x 0...100mbar - volumetric flow rate: 10...100m3/h 230V, 50Hz, 1 phase LxWxH: 1660x790x1930mm (trainer) Weight: approx. 180kg (trainer) LxWxH: 660x510x880mm (fan) Weight: approx. 30kg (fan)