Process for increasing the effectiveness of the comminution of bulk materials by oxidation
AssigneeSiemens Axiva GmbH & Co. KG
InventorsOlaf Mientkewitz, Elke Schweers, Ulrich Bauer, Helmut Gursky, Hubert Müller, Raimo Drögemeier
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Abstract
The invention relates to a process for the comminution of bulk materials comprising synthetic polymers which do not have an elastomeric behavior by mechanical, thermal or electromagnetic loading of the bulk materials, which comprises treating the bulk materials, before and/or during the loading, with oxidants which have a redox potential of greater than 1.5 V or subjecting them to corona, UV or plasma treatment without complete oxidation of the synthetic polymer taking place.
Claims27
A process for the comminution of bulk materials comprising synthetic polymers which do not have an elastomeric behavior, the process comprising the steps of:
- (a) treating a thin surface layer of the bulk materials with oxidants having a redox potential of greater than 1.5 V or subjecting them to corona, UV or plasma treating without complete oxidation of the synthetic polymers taking place;
- and
- (b) simultaneously or thereafter comminuting the bulk materials by mechanical, thermal, or electromagnetic loading.
A process for the comminution of bulk materials comprising comminuting synthetic polymers by mechanical, thermal or electromagnetic loading of the bulk materials, which comprises subjecting the bulk materials to corona treatment before and/or during the loading.
A process for the comminution of bulk materials comprising comminuting synthetic polymers by mechanical, thermal or electromagnetic loading of the bulk materials, which comprises subjecting the bulk materials to plasma treatment before and/or during the loading.
A process for the comminution of bulk materials comprising synthetic polymers which have an elastomeric behavior, the process comprising the steps of:
- (a) treating a thin surface layer of the bulk materials with oxidants selected from the group consisting of permanganic acid, hydrogen peroxide, silver salts, peroxydisulfuric acid, atomic oxygen and fluorine without complete oxidation of the synthetic polymers taking place;
- and
- (b) simultaneously or thereafter comminuting the bulk materials by mechanical, thermal, or electromagnetic loading.
Dependencies are inferred from the claim text.