Patent ID: 7246761

Claim:
Process reactor for the electro-dynamic fragmentation of lumpy mineral materials by pulsed high voltage discharges, comprising: a reaction chamber ( 1 ) with a funnel-like bottom with a central outlet, a high-voltage electrode ( 3 ) which extends from the top into the reaction chamber ( 1 ) and to which a high voltage can be applied, the high-voltage electrode ( 3 ) being surrounded by an electric insulator ( 2 ), the high voltage electrode ( 3 ) being movable along the axis thereof so that its end is disposed opposite the central outlet where another electrode ( 9 ) which is at an electric reference potential is disposed at a variable distance from the high voltage electrode ( 3 ), the outlet at the funnel-like bottom converging into a tailback tube ( 9 ) below which a transport unit ( 10 ) is disposed for the removal of the processed fragmented material sinking down through the tailback tube ( 9 ), a material supply arrangement ( 5 ) extending to an opening in the wall of the reaction chamber ( 1 ) by way of which material to be fragmented is introduced into the reaction chamber ( 1 ), and a material flow blocking structure ( 7 ) disposed in the reaction chamber ( 1 ) in front of the material inlet opening for controlling the material admission and the fill level in the reaction container ( 1 ).