A plasma crushing device and method for assisting underground gangue filling

Abstract

The invention belongs to the technical field of mineral processing, and discloses a plasma crushing device and method for assisting underground gangue filling. The gangue is pre-screened by the first inclined coarse screen, the smaller gangue is crushed by the crushing roller, and the larger gangue enters the plasma discharge vessel, and is processed under the action of the plasma and its shock wave generated by the pulse discharge. Crushing, after the crushed waste rock is screened by the second inclined fine screen, it is collected separately according to whether it meets the crushing requirements. Based on the use of crushing rollers, the present invention uses high-voltage electric pulse discharge technology to make up for the disadvantages of ordinary roller crushers that are limited to intermediate crushing and fine crushing, and the toothed rollers are easy to wear, and can crush better and more efficiently with higher hardness and larger gangue, assisting gangue to fill the goaf underground.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a plasma crushing device and method for assisting underground gangue filling. Background technique [0002] Coal is the main energy source in my country, and its demand remains high. With the increase of coal mine mining depth, the transportation cost and difficulty of lifting coal gangue are also increasing sharply. In addition, considering that coal gangue is easy to form surface solid waste to pollute the environment after it is lifted to the ground, the best way to deal with coal gangue is to crush it underground and use it for goaf filling. [0003] The crushing methods of coal rock mass can be divided into mechanical energy crushing and non-mechanical energy crushing. Among them, the new technology of rock crushing using high-voltage electric pulse discharge belongs to non-mechanical energy crushing. The use of high-voltage electric pulse discharge to crush ga...

AI Technical Summary

Problems solved by technology

Jaw crushers achieve crushing by periodically shaking the jaw plate to crush materials, but it is easy to cause uneven wear of the jaw plate due to uneven ore feeding, and the crushing efficiency is low

The cone crusher can use the inner cone to move eccentrically around the outer cone to crush the material between the two cones, but there are disadvantages such as complex structure, high cost, high fuselage, and difficult maintenance.

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