US 2013/0277465 A1Published application

Method of active impact crushing of minerals and an active impact crusher

AssigneeRoof Corp.

InventorsAndrey Evarestovich KOMAROVSKY, Evarest Boleslavovich Komarovsky

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Abstract

A method of impact crushing of material includes the following steps: the material is fed to an actuator destructing the material and forwarding pieces of the material towards reflecting elements. Small material pieces are impacted by the first reflecting element and large material pieces are impacted by the second reflecting element. Impact surfaces of the reflecting elements are substantially normal to the movement directions of the pieces during the impacts. A time interval between the impacts made by the reflecting elements is defined with use of the expression Δt=(0.7 . . . 1.3)(R1/V1−R2/V2), where R1 and R2 are distances from a place of forwarding the pieces by the actuator to the places, where the first and second reflecting elements impact the pieces, correspondingly, V1 and V2 are average velocities of the pieces forwarded towards the first and second reflecting elements, correspondingly. An impact crusher is disclosed as well.

Claims17

Dependent claims

A method of an impact crushing of material with use of a crusher comprising a feed track, an actuator with one or more impact surfaces and two reflecting elements with impact surfaces, wherein the actuator and the reflecting elements are rotatable synchronously, the method includes the following steps;

the material is fed with use of the feed track to the actuator;
the material is destructed by the actuator to pieces of different sizes and is forwarded towards the reflecting elements;
the material pieces forwarded towards the reflecting elements are contrary impacted by the impact surfaces of the reflecting elements, wherein the material pieces forwarded towards the first reflecting element are impacted by the impact surface of the first reflecting element and the material pieces forwarded towards the second reflecting element are impacted by the impact surface of the second reflecting element,
characterized in that
an angle between the impact surface of the each reflecting element interacting with the material pieces forwarded towards it and movement directions of these material pieces has a value from approximately 76 to approximately 104 degrees at the moment of the impact,
wherein the material pieces are impacted by the reflecting elements with a time interval between impacts of the first and second reflecting elements defined with use of the expression
Δt=(0.7 . . . 1.3)(R1/V1−R2/V2),
where R1 is a distance from a place, where the most distant from the actuator rotation axis point of the impact surface of the actuator is at the minimum distance from the end of the feed track, to the place, where the first reflecting element impacts the material pieces,
R2 is a distance from the place, where the most distant from the actuator rotation axis point of the impact surface of the actuator is at the minimum distance from the end of the feed track, to the place, where the second reflecting element impacts the material pieces,
V1 is an average velocity of the material pieces forwarded towards the first reflecting element, and
V2 is an average velocity of the material pieces forwarded towards the second reflecting element.

8 more elements

An impact crusher comprising a body containing a feed track, an actuator with one or more impact surfaces and two reflecting elements with impact surfaces, wherein the actuator and the reflecting elements are rotatable synchronously, wherein the actuator is able to impact material fed by the feed track and forward material pieces towards the reflecting elements, wherein the reflecting elements are able to contrary impact the material pieces forwarded towards them by impact surfaces of the reflecting elements, characterized in that

the actuator and reflecting elements are rotatable in such a way that an angle between the impact surface of the each reflecting element interacting with the material pieces forwarded towards it and movement directions of these material pieces has a value from approximately 76 to approximately 104 degrees at the moment of the impact,
wherein the reflecting elements are rotatable in such a way that a value of a time interval between the impacts made by the impact surfaces of the first and second reflecting elements on the material pieces forwarded towards them is defined with use of the expression
Δt=(0.7 . . . 1.3)(R1/V1−R2/V2),
where R1 is a distance from a place, where the most distant from the actuator rotation axis point of the impact surface of the actuator is at the minimum distance from the end of the feed track, to the place, where the first reflecting element impacts the material pieces,
R2 is a distance from the place, where the most distant from the actuator rotation axis point of the impact surface of the actuator is at the minimum distance from the end of the feed track, to the place, where the second reflecting element impacts the material pieces,
V1 is an average velocity of the material pieces forwarded towards the first reflecting element, and
V2 is an average velocity of the material pieces forwarded towards the second reflecting element.

4 more elements

Dependencies are inferred from the claim text.