Thermal sorting

Details Thermal sorting Thermal sorting

B - Operations, Transporting

07

C

B07C 5/34 (2006.01) B03B 1/02 (2006.01) B03B 5/28 (2006.01) B03B 5/62 (2006.01) B03C 1/01 (2006.01) B07B 13/00 (2006.01) B07C 5/02 (2006.01)

Patent

CA 2102678

The invention is directed to the sorting of particles according to the thermal properties of the particles. The method comprises, as a first step, subjecting the particles to one ox more thermal treatment steps so that particles with different intrinsic thermal properties are brought to different temperatures. In the next step, conducted either during or after the thermal treatment steps, the particles are subjected to a further, non- thermal treatment. This treatment is chosen to give selected particles that are distinguished from other particles by a difference in temperature a certain feature which is not an intrinsic feature of the particles prior to the thermal treatment step. The particles can then be sorted into a fraction having the certain feature after a predetermined time period has elapsed since the further treatment step and a fraction not having the certain feature after that time lapse.

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