Abstract: An arrangement for extracting extraction products in caving in which the extraction product is extracted downwards through an extraction funnel into an extraction path and from this is transferred onto an extraction conveyor arranged in a conveyor path, in which arrangement the extraction path extends transversely between the conveyor path and an auxiliary path parallel to this, a loading ramp is arranged in the extraction path which forms a ramp surface orientated transversely to the conveying direction of the extraction conveyor and inclined towards it. The extraction path is provided with a rail guidance attached to the bottom and extending in the area between the auxiliary path and the conveying path, on which the loading ramp is guided and along which it can be moved by a displacement drive (20) in the direction of the conveyor path and in the opposite direction.
Type:
Grant
Filed:
August 24, 2006
Date of Patent:
August 24, 2010
Assignees:
Bucyrus DBT Europe GmbH, Corporacion Nacional Del Cobre De Chile (Codelco)
Inventors:
Harry Martin, Juan Delgado, Victor Raúl Encina Montenegro, Pablo Antonio Letelier Parga, Jaime Hernán Carreño Valdés, Fernando Arturo Geister Bühlmann, Detlef Hahn, Jens Steinberg, Hans Peter Lanz, Frank Herrmann, Hans Tümpner, Reinhold Brüggemann, Ulrich Pasehedus, legal representative
Abstract: In the method according to the invention and the arrangement or according to the invention for extracting extraction products in underground mining operations using the caving method, the extraction products (20) collapsing in an upper gate area (10) are extracted via at least one extraction funnel (13) or the like into an extraction path (14) driven below the gate and are transported away therein by means of an extraction conveyor (15). According to the invention the extraction funnels (13) are arranged laterally beside the extraction conveyor (15) and lead at their lower end into a ramp surface (17) inclined towards the extraction conveyor, the extraction products extracted from the gate through the extraction funnels being transported slidingly over the inclined ramp surface to the extraction conveyor.
Type:
Grant
Filed:
June 18, 2004
Date of Patent:
April 1, 2008
Assignees:
DBT GmbH, Codelco
Inventors:
Reinhold Brüggemann, Detlef Hahn, Frank Fischer, Jochen Hammel, Jörg Wirtz, Norbert Katthöfer, Frank Herrmann, Hans Tümpner, Harry Martin, Juan Delgado, Victor Raul Encina Montenegro, Pablo Antonio Letelier Parga, Jaime Hernan Carreno Valdés, Fernando Arturo Geister Bühlmann
Abstract: A collector agent for use in froth flotation processes to recover metal values of sulphide ores is disclosed which agent comprises the reaction product resulting from mixing and reacting in the presence of visible light, heat, or both, a mixture of:(i) a mixture of hydrocarbons having from 5 to 10 (inclusive) carbon atoms,(ii) methyl isobutyl carbinol (MIBC),(iii) ethyl xanthyl ethylformic ester (EEF), and(iv) elemental sulphur (S).
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