Crushing and transportation method and crushing and transportation system of iron ore in deep mining mines

Abstract

The invention relates to a method and system for breaking and conveying iron ore in deep mining mine. The method comprises the following steps: performing coarse breaking and medium breaking on raw ore in a well, roughing through a permanent magnet magnetic roller at the head of a dry separation sealing-tape machine, finely breaking, performing high-pressure roller milling and breaking, and outputting through the sealing-tape machine. A breaking process in the separation process is established in the well, fine materials are continuously provided for a concentrating mill, the ore storage capacity of a ground ore storage bin in the concentrating mill can be buffered through a three-section upward sealing-tape machine, two ore storage welds and a high-pressure grinding ore supply well, the permanent magnet magnetic roller is adopted for performing drying separation and is mainly used for removing large barren rock in coarse broken or medium broken products, tail escaping is performed in advance, the grade of the separated raw ore is improved, the yield is increased, the energy is saved, and the cost is reduced. Moreover, the underground resources are fully utilized, the ground land resources are saved, the energy is saved, the energy consumption is reduced, the steel consumption is saved, and the investment is also saved.

Description

technical field [0001] The invention relates to the technical field of mining and dressing, in particular to a method for crushing and transporting iron ore in deep mining mines and a crushing and transporting system. Background technique [0002] At present, the underground ore is usually exported to the filter room of the dressing plant by using a coarse crusher with a skip hoist to lift it to the ground and then output it to the filtering room of the dressing plant. Mainly, after being crushed by the coarse crusher, the large ore in the underground enters the ore storage chute, and is sent to the metering bucket by a group of feeders and reloading belt conveyors under the ore storage chute, and is lifted to the ground mine by a skip hoist. The ore is fed into the ore storage bin before the intermediate crushing through a group of feeders under the ground mine bin, reloading belt conveyor and a group of belt conveyors, and the ore discharged from the ore storage bin before...

AI Technical Summary

Problems solved by technology

The coarse crusher is equipped with a skip hoist to lift it to the ground and then output to the filter room of the dressing plant. The main disadvantages are as follows: With the continuous increase of mining depth, the effective load of deep well hoisting will decrease significantly with the increase of depth, and the lifting cost A substantial increase

Therefore, one-stage lifting generally does not exceed 2000m. When the depth of the well reaches 2000-4000m, two-stage lifting is often required; the process is complicated and there are many links; the ball mill grinds ore, and the operating cost of the concentrator is high.

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