摘要:
The invention relates to a method and to an arrangement device for extracting extraction products in underground mines in caving. According to the invention, extraction products (20) breaking into an upper coal face (10) are extracted by means of at least one extraction funnel (13) or similar, into an extraction path (14) disposed practically underneath the coal face and are evacuated in said extraction path by means of an extraction conveyor (15). According to the invention, the extraction funnels (13) are arranged next to the extraction conveyor (15) and lead into a ramp surface (17), which is inclined, towards the extraction conveyor, with the lower end thereof. The extraction products extracted from the coal face by the extraction funnels are slidingly transported to the extraction conveyor via the inclined surfaces. The inclined sloped surface is, preferably, formed by a charge ramp (22) which is arranged in an extraction chamber (16) which branches off in a lateral manner from the extraction path, such that one of the high-lying ends (19) thereof is disposed below the extraction funnel and the other low-lying end thereof (23) forms an outlet (21) leading to the extraction conveyor.
摘要:
A cone crusher mantle armor for ore comminution, comprising: a. grooves laid out in the form of spires or helixes over the mantle, where such grooves are integral to said mantle thus forming the mantle armor, and b. such grooves and said mantle are manufactured in a single casting.
摘要:
The invention relates to a method and to an arrangement device for extracting extraction products in underground mines in caving. According to the invention, extraction products (20) breaking into an upper coal face (10) are extracted by means of at least one extraction funnel (13) or similar, into an extraction path (14) disposed practically underneath the coal face and are evacuated in said extraction path by means of an extraction conveyor (15). According to the invention, the extraction funnels (13) are arranged next to the extraction conveyor (15) and lead into a ramp surface (17), which is inclined, towards the extraction conveyor, with the lower end thereof. The extraction products extracted from the coal face by the extraction funnels are slidingly transported to the extraction conveyor via the inclined surfaces. The inclined sloped surface is, preferably, formed by a charge ramp (22) which is arranged in an extraction chamber (16) which branches off in a lateral manner from the extraction path, such that one of the high-lying ends (19) thereof is disposed below the extraction funnel and the other low-lying end thereof (23) forms an outlet (21) leading to the extraction conveyor.
摘要:
A method useful in the continuous ore extraction in underground works intended for the permanent production of extraction from draw points or trenches, comprising the construction of reduced size drifts (4) wherein through the center defined by a group of drifts crosses a drift (2) which is intended for ore haulage, such drift crosses successively all drift groups defined at the exploitation face,—such extraction points (11) are arranged to form a regular layout [m4] at certain distances which are compatible with an interactive gravitational flow; once such drifts, trenches and haulage drifts are constructed the pre-conditioning, caving and extraction stages are carried out.
摘要:
This invention leads to the creation of an apparatus for the maintenance of semiautogenous grinding mills used in the great mining field. Specifically the invention deals with an apparatus for cold cutting nuts which has a mobile cutting tool and a fixed cutting tool, in which such apparatus is driven by means of a hydraulic force, it is structured by a frontal body, a rear body and a hydraulic cylindrical chamber positioned between both bodies. Furthermore, this tool can be incorporated to a control manipulation or remote station for its easy operation.
摘要:
This invention leads to the creation of an apparatus for the maintenance of semiautogenous grinding mills used in the great mining field. Specifically the invention deals with an apparatus for cold cutting nuts which has a mobile cutting tool and a fixed cutting tool, in which such apparatus is driven by means of a hydraulic force, it is structured by a frontal body, a rear body and a hydraulic cylindrical chamber positioned between both bodies. Furthermore, this tool can be incorporated to a control manipulation or remote station for its easy operation.