The fluidisation

Many methods operate through the fluidisation of materials, in dry or wet way, in order to cause a separation based on a difference in specific gravity. The main driving force used is gravity (the opposite of centrifugal techniques). This procedure is used in various ways:

By differential acceleration through jigs. CTP has equipment of different sizes up to pilot scale:

Equipment	Scale	Input	Solid flow
Jig	Laboratory	400 µm to 20 mm	4-6 kg/batch
Jig	Laboratory	400 µm to 20 mm	70-200 kg/batch
Jig	Pilot	500 µm to 50 mm	1-5 t/h

By film-flowing through spirals and shaking tables where the working particle sizes are limited to 75 µm to 2 mm:

Equipment	Application	Input	Solid flow
Coal spirals	Coal, mica	100 µm to 3 mm	3 t/h
Mineral spirals (HG, MG, LG)	Type W, Cr, Sn, Ti oxides, gold, heavy sand, earth, slag, etc.	75 µm to 1.5 mm	1-2 t/h
Shaking table	Laboratory	50 µm to 2 mm	<75 kg/h

By fluidisation in dry way under ascendant airflow or through pneumatic tables and zig-zag classifier:

Equipment	Scale	Input	Solid flow
Spread pneumatic table	Laboratory	<5 mm	20-100 kg/h
Opposing current densimetric table	Pilot	<20 mm	50-300 kg/h
ZZ aerolic separator	Pilot	<40 mm	100-1000 kg/h