Method for improving ore crushing efficiency of jaw crusher

Abstract

The invention discloses a method for improving the ore crushing efficiency of a jaw crusher. The method comprises the steps of evenly feeding raw material ore to a crushing chamber of the jaw crusherwith the ore feeding frequency ranging from 50 Hz to 70 Hz; obtaining the raw material ore by adopting millisecond blasting; setting the ore crushing wave form of the jaw crusher as the tooth form, setting the wave crest of the ore crushing wave form as R40 millimeters, setting the wave trough of the ore crushing wave form as R40 millimeters, setting the wave height of the ore crushing wave form as 80 millimeters, and setting the corrugation pitch of the ore crushing wave form as ranging from 260 millimeters to 300 millimeters; and during ore crushing operation with the jaw crusher, carrying out ore crushing on the raw material ore in the manner of using liner plate ore crushing with dynamic wave crests corresponding to a static wave trough. According to the method for improving the ore crushing efficiency of a jaw crusher, because setting and adjustment are carried out on the ore feeding frequency, the manner of obtaining the raw material ore, the ore crushing wave form and the linearplate ore crushing manner, the influence caused by the action force of pressing, crushing, bending and split on a machine body of the crusher can be reduced, the ore crushing, screening and circulation load of the crusher can be reduced, machine vibration can be reduced, the particle size of discharged materials can be decreased, the electric power consumption for ore crushing is reduced, the orecrushing torque of the crusher is increased, the ore crushing yield is increased, and the ore crushing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of mine crushing, in particular to a method for improving the crushing efficiency of a jaw crusher. Background technique [0002] Jaw crusher is the most commonly used ore crusher, and its main purpose is as a primary crusher and secondary crusher in mining, building materials and infrastructure operations. At present, jaw crushers can be divided into large, medium and small crushers according to the width of the feed opening. The width of the feed opening is greater than 600mm is a large crusher, and the width of the feed opening is within the range of 300mm to 600mm. The feed opening width is less than 300mm is a small crusher. [0003] The working mechanism of the jaw crusher includes a fixed jaw and a movable jaw. The fixed jaw includes a fixed jaw body and a fixed jaw liner. The fixed jaw liner is fixed and installed on the fixed jaw body through a fixed wedge iron and bolts; And the movable jaw linin...

AI Technical Summary

Problems solved by technology

[0005] When the jaw crusher is in use, there are problems such as low ore crushing efficiency, easy to fall off the liner, serious wear and tear of the liner, short service life and large ore discharge particle size.

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